Schematic Reference: Theft Deterrent System Schematics

Connector End View Reference: Theft Deterrent System Connector End Views

1

Did you perform the Theft Deterrent Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Theft Deterrent

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe each door cylinder switch parameter in the driver door module (DDM) Inputs data list.

Does the scan tool display IDLE?

Go to Step 3

Go to Step 7

3

1. With the scan tool, observe each door cylinder switch parameter.
2. Insert and rotate a key to the unlock position in each door key cylinder.

Does each door cylinder switch parameter display UNLOCK as the key is rotated to the unlock position?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 4

Inspect the suspect door key cylinder for mechanical malfunction - disconnected, binding or bent lock rod, obstructions, etc.

Did you find and correct the condition?

Go to Step 15

Go to Step 5

1. Turn OFF the ignition.
2. Disconnect the suspect door cylinder switch connector from the door lock actuator.
3. Connect a 3 amp fused jumper wire between the suspect door lock actuator door cylinder switch harness connector signal circuit to the suspect door lock actuator door cylinder switch harness connector ground circuit.
4. Turn ON the ignition, with the engine OFF.
5. With a scan tool, observe the suspect door cylinder switch parameter in the DDM inputs data list.

Does the scan tool display UNLOCK?

Go to Step 11

Go to Step 6

1. Turn OFF the ignition.
2. Disconnect the suspect door cylinder switch connector from the door lock actuator.
3. Connect a 3 amp fused jumper wire between the suspect door lock actuator door cylinder switch harness connector signal circuit and a good ground.
4. Turn ON the ignition, with the engine OFF.
5. With a scan tool, observe the suspect door cylinder switch parameter in the DDM inputs data list.

Does the scan tool display UNLOCK?

Go to Step 9

Go to Step 8

1. Turn OFF the ignition.
2. Disconnect the suspect door lock actuator door cylinder switch circuit connector.
3. Turn ON the ignition, with the engine OFF.
4. With a scan tool, observe the suspect door cylinder switch parameter in the DDM inputs data list.

Does the scan tool display IDLE?

Go to Step 11

Go to Step 10

Test the suspect door lock actuator door cylinder switch signal circuit for an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 12

Test the suspect door lock actuator door cylinder switch ground circuit for a short to voltage or an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 12

Test the suspect door lock actuator door key cylinder switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 12

Inspect for poor connections at the harness connector of the suspect door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 13

Inspect for poor connections at the harness connector of the DDM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 14

Replace the suspect door lock actuator. Refer to Front Side Door Latch Replacement in Doors.

Did you complete the replacement?

Go to Step 15

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Replace the DDM. Refer to Door Control Module Replacement in Doors.

Did you complete the replacement?

Go to Step 15

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Operate the system to verify the repair.

Did you correct the condition?

System OK

Go to Step 2