For circuit and connector information, refer to Wiring Diagrams Cell 46.
Normal Operation and Fault Symptoms
The RCM monitors the passenger front door and left rear pillar side impact sensors and circuits for the following faults:
Open circuit
Short to voltage
Short to Ground
Passenger front door side impact sensor malfunction
Faulty left rear pillar side impact sensor
When a fault is detected, the RCM stores DTC B1415:11, B1415:93, B1418:11 or B1418:93 in memory and sends a message to the IPC to turn on the airbag indicator.
The RCM communicates with each crash sensor. If the RCM cannot communicate with the sensor, the DTC is stored in memory. A continuous memory diagnostic trouble code (CMDTC) no operation (failure type: 93) may be set by a short to voltage in the crash sensor return circuit.
DTC Fault Trigger Conditions
Trouble Code
Description
Fault Trigger Conditions
B1415:11
Driver Side Supplemental Restraint System Sensor 2: Short to Ground
The fault is indicated when the RCM detects a short to ground on the passenger door side impact sensor, a short to ground on the left second row side impact sensor, a short to ground on the passenger front door impact sensor power supply circuit, or a short to ground on the left second row side impact sensor power supply circuit.
B1415:93
Driver Side Restraint Sensor 2: Inoperative
The fault is indicated when the RCM detects a faulty left second row side impact sensor, a short to voltage on the supply or return circuit of the left second row side impact sensor, a short to voltage on the supply or return circuit of the passenger front door side impact sensor, or an open supply or return circuit of the passenger front door side impact sensor.
B1418:11
Passenger Side Secondary Restraint Sensor 1: Short to Ground
The fault is indicated when the RCM detects a short to ground on the passenger front door side impact sensor, a short to ground on the left second row side impact sensor, a short to ground on the passenger front door impact sensor power supply circuit, or a short to ground on the left second row side impact sensor power supply circuit.
B1418:93
Passenger Side Air Bag Sensor 1: Inoperative
The fault is indicated when the RCM detects a faulty passenger front door side impact sensor, a short to voltage on the supply or return circuit of the passenger front door side impact sensor, a short to voltage on the supply or return circuit of the left second row side impact sensor, or an open supply or return circuit of the passenger front door side impact sensor.
Possible Causes
Wiring, Terminals or Connectors
Passenger Front Door Side Impact Sensor
Left Rear Pillar Side Impact Sensor
RCM
Visual Inspection and Preliminary Diagnosis
Inspect the wiring harness for damage.
PINPOINT TEST A: B1415:11, B1415:93, B1418:11 AND B1418:93
NOTE: Most concerns are related to connector and/or wiring issues. Perform a thorough inspection and check before proceeding to the Pinpoint Test.
NOTE: SRS components must be disabled or reconnected only when directed to do so in a pinpoint test step. Failure to follow this instruction may result in an incorrect SRS diagnosis.
NOTE: Always verify the correct SRS component is installed. Parts released for other vehicles may be incompatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to confirm the correct component is installed. If an incorrect SRS component is installed, diagnostic trouble codes (DTCs) may be set.
NOTE: Before returning the vehicle to the customer, the SRS must be fully functional and operating correctly.
NOTE: Do not probe the impact sensor. The impact sensor cannot be tested with a multimeter.
A1 REMOVE RCM (RESTRAINTS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
WARNING: Before starting any service procedure in this section, refer to the Safety Warnings in Section 100-00 General Information. Failure to follow this instruction may result in serious personal injury. REFER TO: Pyrotechnic Device Handling Precautions (100-00 General Information, Description and Operation).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Were any diagnostic trouble codes (DTCs) retrieved on demand during the self-test?
Yes
The fault(s) cannot be cleared until it is repaired and the DTCs are no longer retrieved on demand during the self-test. For DTC B1415:11 AND B1418:11, GO to A2 For DTC B1415:93 AND B1418:93, GO to A6 For DTC B1415:93 ONLY , GO to A8 For DTC B1418:93 ONLY , GO to A11 For any other DTCs REFER TO: Supplemental Restraint System (SRS) (501-20 Supplemental Restraint System).
No
The fault is intermittent if it is present only as a continuous memory diagnostic trouble code (CMDTC). GO to A15.
A2 CHECK DRIVER SIDE IMPACT SENSOR 2 DTC FOR CHANGE IN FAULT STATUS (SHORT TO GROUND INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: Left Rear Pillar Side Impact Sensor C3209.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Did the on-demand DTCs change from B1415:11 and B1418:11 to B1415:93?
Yes
INSTALL a new left rear pillar side impact sensor. REFER TO: Rear Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation). GO to A16
No
GO to A3
A3 CHECK PASSENGER SIDE IMPACT SENSOR 1 DTC FOR CHANGE IN FAULT STATUS (SHORT TO GROUND INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Connect: Left Rear Pillar Side Impact Sensor C3209.
Disconnect the Passenger Front Door Side Impact Sensor C644.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Did the on-demand DTC change from B1415:11 and B1418:11 to B1418:93?
Yes
INSTALL a new passenger door side impact sensor. REFER TO: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation). GO to A16
No
GO to A4
A4 CHECK THE LEFT (DRIVER SIDE) SIDE IMPACT SENSOR POWER SUPPLY CIRCUIT IN THE B-PILLARS FOR A SHORT TO GROUND AND BETWEEN THE SENSOR CIRCUITS
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: Left Rear Pillar Side Impact Sensor C3209.
Disconnect: RCM C310A and C310B.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C3209-1
C3209-2
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C3209-1
Ground
Is the resistance greater than 10000 ohms?
Yes
GO to A5
No
REPAIR the faulty circuit(s). For schematics and connector information, refer to Wiring Diagrams Cell 5. GO to A16.
A5 CHECK THE PASSENGER DOOR FRONT SIDE IMPACT SENSOR POWER SUPPLY CIRCUIT FOR A SHORT TO GROUND AND BETWEEN THE SENSOR CIRCUITS
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C644-1
C644-2
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C644-1
Ground
Is the resistance greater than 10000 ohms?
Yes
GO to A14
No
REPAIR the faulty circuit(s). For schematics and connector information, refer to Wiring Diagrams Cell 5. GO to A16.
A6 CHECK THE LEFT (DRIVER SIDE) SIDE IMPACT SENSOR POWER SUPPLY CIRCUIT IN THE C-PILLARS FOR A SHORT TO VOLTAGE (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: RCM C310A and C310B.
Disconnect: Left Rear Pillar Side Impact Sensor C3209.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C3209-1
Ground
C3209-2
Ground
Is there voltage present?
Yes
REPAIR the circuits. For wiring diagrams and connectors, refer to the Wiring Diagrams section, cell 5. GO to A16
No
GO to A7
A7 CHECK THE PASSENGER DOOR FRONT SIDE IMPACT SENSOR POWER SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect the Passenger Front Door Side Impact Sensor C644.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C644-1
Ground
C644-2
Ground
Is there voltage present?
Yes
REPAIR the damaged circuits. For schematics and connector information, refer to Wiring Diagrams Cell 5. GO to A16.
No
GO to A14
A8 CHECK THE LEFT (DRIVER SIDE) SIDE IMPACT SENSOR IN THE C-PILLARS AND THE RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Access the left rear pillar side impact sensor and inspect C3209 to make sure it is fully seated and locked. Install and lock the connector as required. REFER TO: Rear Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
Access the RCM and inspect C310A and C310B to make sure they are fully seated and locked. Seat and lock the connector(s) as necessary. REFER TO: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Was DTC B1415:93 retrieved on demand during the self-test?
Yes
GO to A9
No
The fault is repaired. GO to A16.
A9 CHECK THE LEFT (DRIVER SIDE) SIDE IMPACT SENSOR CIRCUITS IN THE C-PILLARS FOR AN OPEN (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: RCM C310A and C310B.
Disconnect: Left Rear Pillar Side Impact Sensor C3209.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C310B-33
C3209-1
C310B-34
C3209-2
Is the resistance less than 0.5 Ohms?
Yes
GO to A10
No
REPAIR the faulty circuit. For schematics and connector information, refer to Wiring Diagrams Cell 5. GO to A16.
A10 CHECK THE DRIVER SIDE SECONDARY SIDE IMPACT SENSOR 2 DTC (DIAGNOSTIC TROUBLE CODE) FOR A CHANGE IN FAULT STATUS (OPERATION NOT INDICATED)
Connect: RCM C310A and C310B.
Connect a fused jumper wire: Click to display connectors
Lead 1
Measurement/Action
Lead 2
C3209-1
C3209-2
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Did the DTC change from B1415:93 to B1415:11 and B1418:11?
Yes
REMOVE the jumper and INSTALL a new left rear pillar side impact sensor. REFER TO: Rear Pillar Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation). GO to A16
No
REMOVE the fuse link and GO to A14.
A11 CHECK THE PASSENGER DOOR SIDE IMPACT SENSOR AND RCM (RESTRAINTS CONTROL MODULE) CONNECTIONS (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Access the passenger front door side impact sensor and inspect C644 to make sure it is fully seated and locked. Sit and lock the connector as required. REFER TO: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation).
Access the RCM and inspect C310A and C310B to make sure they are fully seated and locked. Seat and lock the connector(s) as necessary. REFER TO: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Was DTC B1418:93 retrieved on demand during the self-test?
Yes
GO to A12
No
Fault repaired. GO to A16
A12 CHECK THE PASSENGER DOOR SIDE IMPACT SENSOR CIRCUITS FOR AN OPEN (OPERATION NOT INDICATED)
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: RCM C310A and C310B.
Disconnect the Passenger Front Door Side Impact Sensor C644.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C310B-45
C644-1
C310B-46
C644-2
Is the resistance less than 0.5 Ohms?
Yes
GO to A13
No
REPAIR the faulty circuit. For schematics and connector information, refer to Wiring Diagrams Cell 5. GO to A16.
A13 CHECK THE PASSENGER SIDE SECONDARY SIDE IMPACT SENSOR 1 DTC (DIAGNOSTIC TROUBLE CODE) FOR A CHANGE IN FAULT STATUS (OPERATION NOT INDICATED)
Connect: RCM C310A and C310B.
Connect a fused jumper wire: Click to display connectors
Lead 1
Measurement/Action
Lead 2
C644-1
C644-2
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Did the DTC change from B1418:93 to B1415:11 and B1418:11?
Yes
REMOVE the fuse jumper and INSTALL a new passenger door side impact sensor. REFER TO: Front Door Side Impact Sensor (501-20B Supplemental Restraint System, Removal and Installation). GO to A16
No
REMOVE the fuse link and GO to A14.
A14 CONFIRM THE RCM (RESTRAINTS CONTROL MODULE) IS THE CAUSE
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Before reconnecting any previously disconnected SRS component:
inspect the connector(s) (including any integral connectors) for pushed-out, loose or spread terminals, and loose or chafed wire connections at the terminals.
Inspect the wiring harness for damage, pinching, cuts or punctures in the wires.
check the RCM C310A and C310B connector position assurance (CPA) lever/latch for proper operation.
repair any problems found. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
Connect: Left rear pillar side impact sensor C3209 (if previously disconnected).
Connect: Passenger door front side impact sensor C644 (if previously disconnected).
Connect: RCM C310A and C310B.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Was the original DTC retrieved on demand during the self-test?
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 no TSB applies to this concern, INSTALL a new RCM. REFER TO: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation). GO to A16
No
During diagnosis, the condition has become intermittent. Do not install new SRS components at this time. Install SRS components only if directed by a pinpoint test. GO to A15
A15 CHECK FOR INTERMITTENT CONCERN
Ignition OFF.
De-power the SRS. REFER to: Supplemental Restraint System (SRS) Disabling and Re-enabling (501-20B Supplemental Restraint System, General Procedures).
Disconnect: Left Rear Pillar Side Impact Sensor C3209.
Disconnect the Passenger Front Door Side Impact Sensor C644.
Disconnect: RCM C310A and C310B.
Inspect:
harness and component connectors for loose or spread terminals and loose or corroded wire connections at the terminals.
wiring harness for damage, pinching, cuts or punctures in the wires.
RCM C310A and C310B connector position assurance (CPA) lock for proper operation.
repair any problems found. Refer to Wiring Diagrams Cell 5 for schematic and connector information.
Connect: Left Rear Pillar Side Impact Sensor C3209.
Connect: Passenger door front side impact sensor C644.
Connect: RCM C310A and C310B.
Reset the SRS. Do not check the SRS at this time. REFER TO: Supplemental Restraint System (SRS) Disarming and Rearming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
Using the diagnostic scanner, perform the RCM self-test.
Was DTC B1415:11, B1415:93, B1418:11 or B1418:93 retrieved on demand during the self-test?
Yes
The fault(s) cannot be repaired until it is repaired and the DTC is no longer retrieved on demand during the self-test. For DTC B1415:11 AND B1418:11, GO to A2 For DTC B1415:93 AND B1418:93, GO to A6 For DTC B1415:93 ONLY , GO to A8 For DTC B1418:93 ONLY , GO to A11
No
The fault is not present and cannot be duplicated at this time. Do not install any new SRS components at this time. Install SRS components only when directed by the pinpoint test. GO to A16
Reconnect all SRS components (if previously disconnected).
If previously instructed to disable the SRS, re-enable the SRS. Do not check the SRS at this time. Refer to: Supplemental Restraint System (SRS) Disabling and Arming (501-20B Supplemental Restraint System, General Procedures).
The ignition is on.
NOTE: When selecting Restraints in the Self-Test menu, Diagnostic Trouble Codes (DTCs) are retrieved from the RCM and OCSM. Using the diagnostic scan tool, perform the Restraints Self-Test.
Are any RCM and/or OCSM Diagnostic Trouble Codes (DTCs) retrieved on demand during the self-test?
Yes
Do not clear any Diagnostic Trouble Codes (DTCs) until all DTCs have been resolved. DIAGNOSE and REPAIR the RCM and/or OCSM DTCs. Refer to: Supplemental Restraint System (SRS) (501-20B).
No
CLEAR all RCM and OCSM continuous memory diagnostic trouble codes (CMDTCs). VERIFY SRS. Repair is complete. RETURN the vehicle to the customer.
?
Test yourself
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WARNING: Before starting any service procedure in this section, refer to the Safety Warnings in Section 100-00 General Information. Failure to follow this instruction may result in serious personal injury. 
