Parking Aid. Diagnosis and Testing

DTC Chart(s)

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

PAM Diagnostic Trouble Code Chart

Trouble Code	Description	Action
B129K:12	Left Front Side Sensor: Short to Battery	GO to Pinpoint Test A
B129C:14	Left Front Side Sensor: Short to Ground or Open Circuit	GO to Pinpoint Test B
B129K:96	Left Front Side Sensor: Internal Component Failure	GO to Pinpoint Test C
B129D:12	Right Front Side Sensor: Short to Battery	GO to Pinpoint Test A
B129D:14	Right Front Side Sensor: Short to Ground or Open	GO to Pinpoint Test B
B129D: 96	Right Front Side Sensor: Internal Component Failure	GO to Pinpoint Test C
B129E:11	Semi-Automatic Enhanced Parallel Park On/Off Switch: Short to Ground	GO to Pinpoint Test G
B13F3:12	Left Rear Side Sensor: Short to Battery	GO to Pinpoint Test D
B13F3:14	Left Rear Side Sensor: Short to Ground or Open Circuit	GO to Pinpoint Test E
B13F3:96	Left Rear Side Sensor: Internal Component Failure	GO to Pinpoint Test F
B13F4:12	Right Rear Side Sensor: Short to Battery	GO to Pinpoint Test D
B13F4:14	Right Rear Side Sensor: Short to Ground or Open Circuit	GO to Pinpoint Test E
B13F4:96	Right Rear Side Sensor: Internal Component Failure	GO to Pinpoint Test F
All other PAM diagnostic trouble codes (DTCs)	-	Refer to: Parking Aid (413-13A Parking Aid, Diagnosis and Testing).

Symptom Chart

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart: Active Park Assist System

Condition	Possible Causes	Action
Module does not communicate with the diagnostic scan tool	Fuse Wiring, Terminals or Connectors Module	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
Active Park Assist does not engage when the Active Park Assist switch is pressed	Refer to Pinpoint Test	GO to Pinpoint Test G
A message about Active Park Assist is displayed on the CenterStack information display and/or the IPC message center display.	Refer to Pinpoint Test	GO to Pinpoint Test H
The CenterStack information display shows a message that Active Park Assist is unavailable.	AdvanceTrac® was turned off when the system was activated. An ABS or AdvanceTrac® event occurred during system activation.	The active park assist system is unavailable if AdvanceTrac® is turned off or if an ABS or AdvanceTrac® event occurs while the driver activates the system.
	The battery was recently disconnected. The PSCM and/or ABS module was recently reprogrammed.	The active park assist system is unavailable immediately after the battery is disconnected or if the PSCM and/or ABS module was recently reprogrammed. PERFORM the following: drive the vehicle straight on a level/smooth road at a speed above 20 km/h with minimal steering wheel input for 30 seconds. Discontinue this step at any time to maintain safe driving and repeat the process if necessary. If performed correctly, active park assist will be available when the active park assist switch is pressed.
Active Park Assist does not correctly position the vehicle.	Active Park Assist sensor(s) incorrectly secured in the bumper	REMOVE and INSTALL the park assist sensor(s) correctly, if necessary. REFER TO: Front Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). REFER TO: Rear Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).
	Dirty or iced Park Assist sensor(s)	CLEAN the bumper covers and active park assist sensors with high-pressure water.
	The active park assist sensors react to rapid changes in ambient air temperature.	The ambient air temperature around the vehicle can change quickly, for example, when the vehicle enters or exits a garage or car wash. As a result, the air temperature displayed in the vehicle may not be close enough to the actual ambient air temperature. The active park assist system relies on an accurate ambient air temperature measurement to compensate the sensors. No action is required.
	Tires are not inflated to the correct pressure, tires are not the same size, or tires are not the OE (original equipment) size.	CHECK the tire condition, pressure and size. A significantly worn tire will pull the vehicle away from the curb. A larger tire will bring the vehicle closer to the curb. REPAIR or REPLACE the tire(s) as necessary.
	The driver allowed the vehicle to roll in the direction opposite to the transmission gear selected, for example, rolling forward when reverse is selected.	INFORM the customer not to allow the vehicle to roll in the opposite direction while operating the active park assist system. REFER TO Owner's Literature.
	An uneven curb is present along the parking space.	The system may not be able to align the vehicle to damaged, very low or debris-covered curbs. If this condition exists, the system aligns the vehicle to objects bordering the parking space.
	The vehicle or an object bordering the parking space is not aligned with the parking space.	The system aligns the vehicle to objects bordering the parking space when a curb is not detected.
	A raised object on one of the parked vehicles, such as a salt spreader or a moving truck platform, may not be detected by the sensors.	Overhanging attachments may not be detected by the system.
	The length of the parking space or the position of the parked objects has changed after the vehicle passed the parking space.	The system scans the parking space as the vehicle is driven past the available spaces. Therefore, the system cannot determine whether the position of the parked vehicle or objects has changed after the parking space was scanned. No action is required at this time.
	The driver did not wait for the steering wheel to finish rotating before moving the vehicle.	INFORM the customer to allow the steering wheel to complete its rotation before moving the vehicle after shifting gears.
Active Park Assist incorrectly positions the vehicle (continued)	Park Assist sensors are damaged or misaligned.	INSTALL new active Park Assist sensor(s). REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).
Active Park Assist does not offer available parking spaces.	The vehicle is too close to or too far from the adjacent vehicle and/or objects.	The vehicle must be more than 40 cm (16 in) and less than 152 cm (60 in) from the adjacent vehicle.
	Available parking space is too small	For parallel parking, Active Park Assist only allows available parking spaces that are more than 1.2 times the length of the vehicle. The system is operating correctly at this time. For perpendicular parking, Active Park Assist only allows available parking spaces that are wider than the vehicle width + 90 cm (3 ft). The system is operating correctly at this time.
	There may not be enough room to maneuver the vehicle into the available space.	There must be enough room on the opposite side of the vehicle for the front of the vehicle to swing out as the operator returns to the space.
	An obstruction may be covering the Active Park Assist sensor(s).	CHECK and CLEAN the Active Park Assist sensor(s). REMOVE any obstructions covering the sensor(s).
	The Active Park Assist sensor isolator ring is missing, damaged or misaligned.	INSTALL a new active Park Assist sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).
	The Outside Air Temperature (OAT) sensor does not show accurate temperature readings.	DRIVE the vehicle so that airflow over the Outside Air Temperature (OAT) sensor until the temperature reading on the center console information display reflects the actual outside ambient temperature.
The CenterStack information display shows POA UNAVAILABLE when the turn signal is used during parallel park assist.	The occupied parking space is too small.	Only Active Park Assist offers the parallel park assist function when the occupied parking space is at least 1.2 times the length of the vehicle. The system is operating correctly at this time.
	An obstruction may be covering the front Active Park Assist sensor(s).	INSPECT and CLEAN the front Active Park Assist sensor(s). REMOVE any obstructions covering the sensor(s).
	No object or vehicle is detected directly in front of or behind the occupied parking space.	The parallel park assist function is only available when an object or vehicle is detected within 2 m (7 ft) of either the front or rear bumper. The system is operating correctly at this time.
	Object or vehicle detected on the turn signal side	The parallel park assist exit function displays the POA NOT AVAILABLE message when objects or vehicles are detected within 110 cm (4 ft) in North and South America, or within 60 cm (2 ft) in the Asia-Pacific region, on the side of the turn signal activation. Passing vehicles, pedestrians or other objects may be detected. When the turn signal is activated, MAKE SURE the required side clearance is at least 110 cm (4 ft) in North and South America, or 60 cm (2 ft) in the Asia-Pacific region.
Active Park Assist does not offer the parallel park assist function.	The vehicle has traveled more than 2 m (7 ft) after the ignition was turned on or after parallel parking.	INFORM the customer that the parallel park assist exit function is only available immediately after a successful automatic parallel park or immediately after the ignition is turned on. Driving more than 2 m (7 ft) after either of these events makes the parallel park assist exit function unavailable for driver selection.

Pinpoint Test(s)

Diagnostic Trouble Code B129C:12, Diagnostic Trouble Code B129D:12

For wiring diagrams and connector information, refer to Cell 131 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B129K:12	Left Front Side Sensor: Short to Battery	Continuous On-Demand DTC that is set in the PAM when the front left Active Park Assist sensor signal circuit shorts to battery voltage.
B129D:12	Right Front Side Sensor: Short to Battery	Continuous On-Demand DTC that is set in the PAM when the front right Active Park Assist sensor signal circuit shorts to battery voltage.

Possible Causes

• Wiring, Terminals or Connectors
• Front Active Park Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART A: DTC B129C:12, DTC B129D:12

A1 CHECK THE PAM (PARKING AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE SELF-TEST

The ignition is on. Using the scan tool, perform the PAM self-test. Check the PAM diagnostic trouble codes (DTCs) from the self-test. Are DTCs recorded for multiple front Parking Aid sensors? Yes GO to A2 No • For DTC B129C:12 or DTC B129D:12, GO to A3. • For information on all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM. DTC Chart in this section.

A2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion. Is the front bumper wiring harness in good condition? Yes GO to A3 No REPAIR or INSTALL a new front bumper wiring harness.

A3 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF. Disconnect the suspect front Active Park Assist sensor(s) C1607 (DTC B129C:12) or C1608 (DTC B129D:12). Disconnect C2280C. The ignition is on. Action: Click to display the connectors Diagnostic Trouble Code B129C:12 Positive lead Measurement/Action Negative lead C1607-2 Ground Click to display the connectors Diagnostic Trouble Code B129D:12 Positive lead Measurement/Action Negative lead C1608-2 Ground Is there voltage present? Yes REPAIR the circuit. No GO to A4

A4 CHECK THE SENSOR SUPPLY VOLTAGE AND SIGNAL RETURN CIRCUITS FOR A SHORT TOGETHER

Ignition OFF. Action: Click to display the connectors Diagnostic Trouble Code B129C:12 Positive lead Measurement/Action Negative lead C1607-2 C1607-1 Click to display the connectors Diagnostic Trouble Code B129D:12 Positive lead Measurement/Action Negative lead C1608-2 C1608-1 Is the resistance greater than 10000 Ohms? Yes GO to A5 No REPAIR the damaged circuits.

A5 CHECK THE FRONT ACTIVE PARK ASSIST SENSOR

Connect C2280C. The ignition is on. Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test. Is DTC B129C:12 or DTC B129D:12 still present? Yes GO to A6 No INSTALL a new front Park Assist sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

A6 CHECK THE BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Diagnostic Trouble Code B129C:14, Diagnostic Trouble Code B129D:14

For wiring diagrams and connector information, refer to Cell 131 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B129C:14	Left Front Side Sensor: Short to Ground or Open Circuit	Continuous on-demand DTC that is stored in the PAM when any of the left front Park Assist sensor circuits is open or the sensor signal line is shorted to ground.
B129D:14	Right Front Side Sensor: Short to Ground or Open	Continuous on-demand DTC that is stored in the PAM when any of the right front Active Park Assist sensor circuits is open or the sensor signal line is shorted to ground.

Possible Causes

• Wiring, Terminals or Connectors
• Front Active Park Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART B: DTC B129C:14, DTC B129D:14

B1 CHECK THE PAM (PARKING AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE SELF-TEST

The ignition is on. Using the scan tool, perform the PAM self-test. Check the PAM diagnostic trouble codes (DTCs) from the self-test. Are DTCs recorded for multiple front Parking Aid sensors? Yes GO to B2 No • For DTC B129C:14 or DTC B129D:14, GO to B3. • For information on all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM. DTC Chart in this section.

B2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion. Is the front bumper wiring harness in good condition? Yes GO to B3 No REPAIR or INSTALL a new front bumper wiring harness.

B3 CHECK THE SENSOR CIRCUITS FOR AN OPEN CIRCUIT

Ignition OFF. Disconnect the suspect front Active Park Assist sensor(s) C1607 (DTC B129C:14) or C1608 (DTC B129D:14). Disconnect C2280C. Action: Click to display the connectors Diagnostic Trouble Code B129C:14 Positive lead Measurement/Action Negative lead C2280C-7 C1607-1 C2280C-11 C1607-2 C2280C-35 C1607-3 Click to display the connectors Diagnostic Trouble Code B129D:14 Positive lead Measurement/Action Negative lead C2280C-7 C1608-1 C2280C-1 C1608-2 C2280C-35 C1608-3 Is the resistance less than 3 ohms? Yes GO to B4 No REPAIR the faulty circuit(s).

B4 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO GROUND

Action: Click to display the connectors Diagnostic Trouble Code B129C:14 Positive lead Measurement/Action Negative lead C1607-2 Ground Click to display the connectors Diagnostic Trouble Code B129D:14 Positive lead Measurement/Action Negative lead C1608-2 Ground Is the resistance greater than 10000 Ohms? Yes GO to B5 No REPAIR the circuit.

B5 CHECK THE FRONT ACTIVE PARK ASSIST SENSOR

Connect C2280C. Install a known good front Park Assist sensor as the suspect sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). The ignition is on. Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs). Perform the PAM self-test. Is DTC B129C:14 or DTC B129D:14 still present? Yes GO to B6 No INSTALL a new front Park Assist sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

B6 CHECK THE BCM (BODY CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Diagnostic Trouble Code B129C:96, Diagnostic Trouble Code B129D:96

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B129K:96	Left Front Side Sensor: Internal Component Failure	Continuous on-demand DTC that is stored in the PAM when the left front Park Assist sensor has an internal fault or has an incorrect decay time.
B129D: 96	Right Front Side Sensor: Internal Component Failure	Continuous on-demand DTC that is stored in the PAM when the right front Park Assist sensor has an internal fault or has an incorrect decay time.

Possible Causes

• Front Active Park Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART C: DTC B129C:96, DTC B129D:96

C1 CHECK THE PAM (PARK ASSIST MODULE) CONTINUOUS AND ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on. Using the diagnostic scan tool, retrieve the PAM DTCs. Are there any DTCs other than DTC B129C:96 or DTC B129D:96? Yes First, CHECK all other PAM DTCs. REFER to the PAM DTC chart in this section. No GO to C2

C2 CHECK THE FRONT ACTIVE PARK ASSIST SENSOR OPERATION

Clean the front bumper and sensors with high-pressure water. Make sure the suspect front park aid sensor is flush with the fascia. Perform the Azimuth System Check. REFER to: Azimuth System Check (413-13B Park Assist - Vehicles With: Active Park Assist, General Procedures). Does the system pass the bearing check? Yes The system is currently operating correctly. The concern may have been caused by contamination, blockage or incorrect installation of the front active park aid sensor. No GO to C3

C3 INSTALL A KNOWN GOOD SENSOR

Ignition OFF. Install a known good sensor in place of the suspect front Park Assist sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). The ignition is on. Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test. Is DTC B129C:96 or DTC B129D:96 still present? Yes GO TO C4 No INSTALL a new Active Park Assist sensor in place of the suspect sensor. REFER to: Front Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

C4 CHECK THE BCM (BODY CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Diagnostic Trouble Code B13F3:12, Diagnostic Trouble Code B13F4:12

For wiring diagrams and connector information, refer to Cell 131 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B13F3:12	Left Rear Side Sensor: Short to Battery	Continuous on-demand DTC that is stored in the PAM when the left rear Active Park Assist sensor signal circuit is shorted to battery voltage.
B13F4:12	Right Rear Side Sensor: Short to Battery	Continuous on-demand DTC that is stored in the PAM when the right rear Active Park Assist sensor signal circuit is shorted to battery voltage.

Possible Causes

• Wiring, Terminals or Connectors
• Rear Active Parking Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART D: DTC B13F3:12, DTC B13F4:12

D1 CHECK THE PAM (PARK AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) SELF-TEST

Using the scan tool, perform the PAM self-test. Check the PAM diagnostic trouble codes (DTCs) from the self-test. Are DTCs recorded for multiple rear park assist sensors? Yes GO to D2 No • For DTC B13F3:12 or DTC B13F4:12, GO to D3. • For information on all other PAM Diagnostic Trouble Codes (DTCs), REFER to PAM. DTC Chart in this section.

D2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion. Is the rear bumper wiring harness in good condition? Yes GO to D3 No REPAIR or INSTALL a new rear bumper wiring harness.

D3 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF. Disconnect the suspect rear Active Park Assist sensor(s) C4420 (DTC B13F3:12) or C4421 (DTC B13F4:12). Disconnect the C2280E connector. The ignition is on. Action: Click to display the connectors Diagnostic Trouble Code B13F3:12 Positive lead Measurement/Action Negative lead C4420-2 Ground Click to display the connectors Diagnostic Trouble Code B13F4:12 Positive lead Measurement/Action Negative lead C4421-2 Ground Is there voltage present? Yes REPAIR the circuit. No GO to D4

D4 CHECK THE SENSOR SUPPLY VOLTAGE AND SIGNAL RETURN CIRCUITS FOR A SHORT TOGETHER

Ignition OFF. Action: Click to display the connectors Diagnostic Trouble Code B13F3:12 Positive lead Measurement/Action Negative lead C4420-2 C4420-1 Click to display the connectors Diagnostic Trouble Code B13F4:12 Positive lead Measurement/Action Negative lead C4421-2 C4421-1 Is the resistance greater than 10000 Ohms? Yes GO to D5 No REPAIR the damaged circuits.

D5 CHECK THE REAR ACTIVE PARK ASSIST SENSOR

Connect the C2280E. The ignition is on. Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test. Is DTC B13F3:12 or DTC B13F4:12 still present? Yes GO to D6 No INSTALL a new rear Active Park Assist sensor. REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

D6 CHECK BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Diagnostic Trouble Code B13F3:14, Diagnostic Trouble Code B13F4:14

For wiring diagrams and connector information, refer to Cell 131 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B13F3:14	Left Rear Side Sensor: Short to Ground or Open Circuit	Continuous on-demand DTC that is stored in the PAM when any of the left rear Active Park Assist sensor circuits is open or the sensor signal line is shorted to ground.
B13F4:14	Right Rear Side Sensor: Short to Ground or Open Circuit	Continuous DTC, on-demand, stored in the PAM when any of the circuits of the right rear active park assist sensor is open or the sensor signal line is shorted to ground.

Possible Causes

• Wiring, Terminals or Connectors
• Rear Active Parking Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART E: DTC B13F3:14, DTC B13F4:14

E1 CHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) SELF-TEST

The ignition is on. Using the scan tool, perform the PAM self-test. Check the PAM diagnostic trouble codes (DTCs) from the self-test. Are DTCs recorded for multiple rear park assist sensors? Yes GO to E2 No • For DTC B13F3:14 or DTC B13F4:14, GO to E3. • For information on all other PAM diagnostic trouble codes (DTCs), REFER to the DTC chart in this section.

E2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion. Is the rear bumper wiring harness in good condition? Yes GO to E3 No REPAIR or INSTALL a new rear bumper wiring harness.

E3 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF. Disconnect the suspect rear active park assist sensor(s) C4420 (DTC B13F3:14) or C4421 (DTC B13F4:14). Disconnect the C2280E connector. Action: Click to display the connectors Diagnostic Trouble Code B13F3:14 Positive lead Measurement/Action Negative lead C2280E-26 C4420-1 C2280E-25 C4420-2 C2280E-27 C4420-3 Click to display the connectors Diagnostic Trouble Code B13F4:14 Positive lead Measurement/Action Negative lead C2280E-26 C4421-1 C2280E-9 C4421-2 C2280E-27 C4421-3 Is the resistance less than 3 ohms? Yes GO to E4 No REPAIR the faulty circuit(s).

E4 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO GROUND

Action: Click to display the connectors Diagnostic Trouble Code B13F3:14 Positive lead Measurement/Action Negative lead C4420-2 Ground Click to display the connectors Diagnostic Trouble Code B13F4:14 Positive lead Measurement/Action Negative lead C4421-2 Ground Is the resistance greater than 10000 Ohms? Yes GO to E5 No REPAIR the circuit.

E5 CHECK THE REAR ACTIVE PARK ASSIST SENSOR

Connect the C2280E. Install a known good rear park assist sensor as the suspect sensor. REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). The ignition is on. Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs). Perform the PAM self-test. Is DTC B13F3:14 or DTC B13F4:14 still present? Yes GO to E6 No INSTALL a new rear active park assist sensor. REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

E6 CHECK THE BCM (BODY CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Diagnostic Trouble Code B13F3:96, Diagnostic Trouble Code B13F4:96

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B13F3:96	Left Rear Side Sensor: Internal Component Failure	Continuous DTC, on-demand, stored in the PAM when the left rear park assist sensor has an internal fault or has an incorrect decay time.
B13F4:96	Right Rear Side Sensor: Internal Component Failure	Continuous DTC, on-demand, stored in the PAM when the right rear active park assist sensor has an internal fault or has an incorrect decay time.

Possible Causes

• Rear Active Parking Aid Sensor
• PAM (integral part of the BCM)

DIAGNOSTIC CHART F: DTC B13F3:96, DTC B13F4:96

F1 CHECK PAM (PARK ASSIST MODULE) CONTINUOUS AND ON-DEMAND DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on. Using the diagnostic scan tool, retrieve the PAM DTCs. Are there any DTCs other than DTC B13F3:96 or DTC B13F4:96? Yes First, CHECK all other PAM DTCs. REFER to the PAM DTC chart in this section. No GO to F2

F2 CHECK THE REAR ACTIVE PARK ASSIST SENSOR OPERATION

Clean the rear bumper and sensors with high-pressure water. Make sure the suspect rear park assist sensor(s) is installed flush in the fascia. Perform the Azimuth System Check. REFER to: Azimuth System Check (413-13B Park Assist - Vehicles With: Active Park Assist, General Procedures). Does the system pass the bearing check? Yes The system is currently operating correctly. The concern may have been caused by contamination, a blockage or an incorrectly installed rear active park assist sensor. No GO to F3

F3 INSTALL A KNOWN GOOD SENSOR

Ignition OFF. Install a known good sensor for the suspect rear park assist sensor. REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation). The ignition is on. Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test. Is DTC B13F3:96 or DTC B13F4:96 still present? Yes GO to F4 No INSTALL a new rear active park assist sensor as the suspect sensor. REFER to: Rear Active Park Assist Sensors (413-13B Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).

F4 CHECK THE BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

Active Park Assist system does not activate when the Active Park Assist switch is pressed

Normal Operation and Fault Symptoms

The Active Park Assist system is enabled, the Active Park Assist system relies on several inputs and driver input through the Active Park Assist switch.
REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Conditions
B129E:11	Semi-Automatic Enhanced Parallel Park On/Off Switch: Short to Ground	Continuous DTC, on-demand, stored in the PAM when the Active Park Assist switch is stuck in the closed position or shorted to ground in the Active Park Assist switch input circuit.

Possible Causes

• Communication network concern
• Active Park Assist switch (also known as the instrument panel switch pack)
• PAM (integral part of the BCM)

DIAGNOSTIC CHART G: ACTIVE PARK ASSIST SYSTEM DOES NOT ENGAGE WHEN ACTIVE PARK ASSIST SWITCH IS PRESSED

G1 CONFIRM THE CUSTOMER CONCERN

The ignition is on. Check the Active Park Assist system operation. Does the Active Park Assist system operate correctly? Yes CLEAR the DTC. The system is currently operating correctly. The concern may have been caused by high network traffic or by driver perception of how the Active Park Assist system operates. REFER to the Owner's Guide. No GO to G2

G2 CHECK PAM (PARK ASSIST MODULE) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Using the scan tool, perform the PAM self-test. Are there any diagnostic trouble codes (DTCs) other than DTC B129E:11? Yes First, CHECK the other PAM diagnostic trouble codes (DTCs). REFER to the PAM DTC Chart in this section. No GO to G3

G3 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR A SHORT TO GROUND

Ignition OFF. Disconnect the Active Parking Aid switch C2489. Disconnect C2280G. Action: Click to display the connectors Positive lead Measurement/Action Negative lead C2489-2 Ground Is the resistance greater than 10000 Ohms? Yes GO to G4 No REPAIR the circuit.

G4 CHECK THE ACTIVE PARK ASSIST SWITCH CIRCUIT FOR AN OPEN

Action: Click to display the connectors Positive lead Measurement/Action Negative lead C2489-2 C2280G-17 Is the resistance less than 3 ohms? Yes GO to G5 No REPAIR the circuit.

G5 CHECK THE ACTIVE PARK ASSIST SWITCH GROUND CIRCUIT FOR AN OPEN

Action: Click to display the connectors Positive lead Measurement/Action Negative lead C2489-3 Ground Is the resistance less than 3 ohms? Yes GO to G6 No REPAIR the circuit.

G6 CHECK THE ACTIVE PARK ASSIST SYSTEM SWITCH OPERATION

Connect the Active Park Assist switch C2489. Measure while pressing and releasing the Active Park Assist switch: Click to display the connectors Positive lead Measurement/Action Negative lead C2280G-17 Ground Is the resistance less than 3 Ohms with the switch pressed and greater than 10,000 Ohms with the switch released? Yes GO to G7 No INSTALL a new park assist system switch.

G7 CHECK BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

The center console information and entertainment display and/or the IPC message center display shows an Active Park Assist system fault message.

For wiring diagrams and connector information, refer to Cell 131 of the Wiring Diagrams.

For wiring diagram and connector information, REFER TO Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

REFER to: Park Assist System - System Operation and Component Description (413-13B Park Assist System - Vehicles With: Active Park Assist, Description and Operation).

Possible Causes

• Communication network concern
• PSCM concern
• SCCM concern
• ABS concern
• PCM Concern
• RCM Concern
• TRM concern
• FCIM concern
• IPC Concern
• GWM concern
• APIM
• BCM
• PAM (integral part of the BCM)

DIAGNOSTIC CHART H: ACTIVE PARK ASSIST SYSTEM FAULT MESSAGE DISPLAYED ON THE CENTER INFORMATION AND ENTERTAINMENT DISPLAY AND/OR IN THE IPC (INSTRUMENT PANEL CLUSTER) MESSAGE CENTER DISPLAY

H1 PERFORM NETWORK TEST

The ignition is on. Using a scan tool, perform the network test. Do all modules pass the network test? Yes GO to H2 No REFER to the Symptom Chart: Communication Network. REFER to: Communication Network (418-00 Module Communications Network, Diagnosis and Testing).

H2 CHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the scan tool, perform the PAM self-test. Are any diagnostic trouble codes (DTCs) present? Yes REFER TO the PAM DTC Chart in this section. No GO to H3

H3 CHECK PSCM (POWER STEERING CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the PSCM self-test. Are any diagnostic trouble codes (DTCs) present? Yes REFER to the PSCM DTC Chart. REFER to: Power Steering (211-02 Power Steering, Diagnosis and Testing). No GO to H4

H4 CHECK SCCM (STEERING COLUMN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the SCCM self-test. Are any diagnostic trouble codes (DTCs) present? Yes REFER to the SCCM DTC Chart. REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing). No GO to H5

H5 CHECK ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform a self-test of the ABS module. Are any diagnostic trouble codes (DTCs) present? Yes REFER to the ABS Module DTC Chart. REFER to: Anti-Lock Brake System (ABS) and Traction Control System (206-09 Anti-Lock Brake System (ABS) and Traction Control System, Diagnosis and Testing). No GO to H6

H6 CHECK PCM (POWERTRAIN CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform a PCM self-test. Are any diagnostic trouble codes (DTCs) present? Yes REFER to Electronic Engine Controls, PCM DTC Chart. For the procedure, REFER to the appropriate group 303 section. No GO to H7

H7 CHECK RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, perform the RCM self-test. Are any diagnostic trouble codes (DTCs) present? Yes Refer to RCM DTC Chart. REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). No GO to H8

H8 CHECK IPC (INSTRUMENT PANEL CLUSTER) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the IPC self-test. Are any diagnostic trouble codes (DTCs) present? Yes Refer to IPC DTC Chart. REFER TO: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing). No GO to H9

H9 CHECK GWM (GATEWAY MODULE A) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs). Are any diagnostic trouble codes (DTCs) present? Yes REFER to GWM DTC Chart. REFER to: Communication Network (418-00 Communication Network, Diagnosis and Testing). No GO to H10

H10 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a scan tool, perform the BCM self-test. Are any diagnostic trouble codes (DTCs) present? Yes Refer to the BCM DTC Chart. REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing). No GO to H11

H11 CHECK APIM (SYNC MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the APIM self-test. Are any diagnostic trouble codes (DTCs) present? Yes Refer to APIM DTC Chart. For the procedure, refer to the appropriate section in Group 415. No GO to H12

H12 CHECK BCM (BODY CONTROL MODULE) PROGRAMMING OPERATION

Ignition OFF. Disconnect and inspect all BCM connectors and the corresponding inline connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins backed-out pins - install new pins as necessary Connect the BCM connectors and the corresponding inline connectors. Make sure they are installed and locked correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If the TSBs do not resolve the concern, Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.