Perimeter Anti-Theft Alarm Diagnosis and Testing

DTC 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).

DTC Chart

DDM Diagnostic Trouble Code 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).

DDM Diagnostic Trouble Code Chart

Symptom Chart

Symptom Chart: Anti-Theft - Perimeter

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

Pinpoint Tests

Alarm does not activate when unauthorized entry through the hood is attempted

For circuit and connector information, refer to Wiring Diagrams Cell 117.

Normal Operation and Fault Symptoms

Refer to: Perimeter Anti-Theft Alarm (419-01 Perimeter Anti-Theft Alarm).

Possible Sources

• Wiring, Terminals or Connectors
• Hood Latch
• BCM

Visual Inspection and Preliminary Diagnosis

• Inspect the hood latch for damage.

A1 CHECK THE BCM (BODY CONTROL MODULE) HOOD AJAR SWITCH (HOOD_SW) PID (PARAMETER IDENTIFICATION)

The ignition is on. Using the diagnostic scan tool, view the BCM parameter identification (PID) data. Using a diagnostic scan tool, monitor the BCM HOOD_SW PID. Hood Ajar Switch C127. Does the HOOD_SW PID show AJAR when the switch is disconnected? Yes INSTALL a new hood latch. REFER TO: Hood Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation). No GO to A2

A2 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND

Ignition OFF. Disconnect C2280C. Action: Click to display the connectors Positive lead Measurement/Action Negative lead C127-2 Ground Is the resistance greater than 10000 Ohms? Yes Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No REPAIR the circuit.

Alarm system does not arm or turn signal indicators do not flash CONFIRMATION

Normal Operation and Fault Symptoms

Refer to: Perimeter Anti-Theft Alarm (419-01 Perimeter Anti-Theft Alarm).

Possible Sources

• Door ajar input
• Hood switch input
• Liftgate ajar entry
• Turn Signal Output
• Keyless entry keypad concern
• RKE transmitter concern
• BCM

B1 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE)

The ignition is on. Using a scan tool, perform the BCM self-test. Is DTC B1305:01 present? Yes GO to Pinpoint Test C No GO to B2

B2 CHECK DOOR AJAR SWITCH INPUT

Close all doors. Observe the PMI. Does the IPC indicate that a door is ajar? Yes CHECK that the interior lamps illuminate continuously. Refer to: Interior Lighting (417-02 Interior Lighting). No GO to B3

B3 MONITOR LIFTGATE AJAR SWITCH INPUT

Close the liftgate. Observe the PMI. Does the IPC indicate that the liftgate is ajar? Yes CHECK for incorrect liftgate ajar indication. Refer to: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warning Chimes). No GO to B4

B4 CHECK MAGNETIC HAZARD LAMP OPERATION

Ignition OFF. Activate the hazard warning function and observe the turn signal lamps. Do all turn signal lamps flash and then turn off? Yes GO to B5 No CHECK the turn signal lamps for malfunction. REFER TO: Turn Signal and Hazard Lamp Switch (417-01 Exterior Lighting).

B5 CHECK RKE (REMOTE KEYLESS ENTRY) TRANSMITTER FUNCTION

Using the RKE transmitter, lock and unlock the doors. Do the doors lock and unlock? Yes GO to B6 No CHECK the RKE transmitter for malfunction. REFER TO: Locks, Latches and Entry Systems (501-14 Door Handles, Locks, Latches and Entry Systems).

B6 PASSIVE ENTRY KEYPAD FUNCTION CHECK

Using the keyless entry keypad, lock the doors (simultaneously press 7/8 and 9/0). Do the doors lock? Yes Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No CHECK the keyless entry keypad. REFER TO: Locks, Latches and Entry Systems (501-14 Door Handles, Locks, Latches and Entry Systems).

B1305:01

For circuit and connector information, refer to Wiring Diagrams Cell 117.

Normal Operation and Fault Symptoms

Refer to: Perimeter Anti-Theft Alarm (419-01 Perimeter Anti-Theft Alarm).

DTC Fault Trigger Conditions

Possible Sources

• Wiring, Terminals or Connectors
• Hood Latch
• BCM

Visual Inspection and Preliminary Diagnosis

• Inspect the hood latch for damage.

C1 CHECK THE HOOD AJAR SWITCH

Hood Ajar Switch C127. The ignition is on. Connect: Click to display connectors Positive lead Measurement/Action Negative lead C127-1 C127-2 Using a scan tool, perform the BCM self-test. Is DTC B1305:01 still present? Yes REMOVE the fusible link. GO to C2. No REMOVE the fusible link. INSTALL a new hood latch.

C2 CHECK THE HOOD AJAR SWITCH GROUND CIRCUIT FOR AN OPEN

Connect a fused jumper wire: Click to display connectors Positive lead Measurement/Action Negative lead C127-2 Ground Using a scan tool, perform the BCM self-test. Is DTC B1305:01 still present? Yes REMOVE the fusible link. GO to C3 No REMOVE the fusible link. REPAIR the hood ajar switch ground circuit.

C3 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR AN OPEN

Ignition OFF. Disconnect C2280C. Action: Click to display the connectors Positive lead Measurement/Action Negative lead C127-2 C2280C-14 Is the resistance less than 3 ohms? Yes Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test. No REPAIR the circuit.