Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - ALL DOORS FAILING TO LOCK AND UNLOCK FROM ANY SWITCH
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Lower the drivers window. Remove the ignition key. Unlock all doors. With the DRBIII®, actuate the Door Lock Relay. Do the doors lock during the actuation test? Yes --> Go To 2 No --> Go To 10 |
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| 2 | With the DRBIII, observe the Door Lock Switch Voltage. Is the voltage above 0.2 volts? Yes --> Refer to symptom DOOR LOCK SWITCH FAILURE . Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 3 |
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| 3 | With the DRBIII, observe the Door Lock Switch voltage Press and hold the Driver Door Lock Switch in the lock position and observe the DRB. Is the voltage above 2.2 volts with the switch pressed in the lock position? Yes --> Replace the Body Control Module - Control open. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 4 |
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| 4 | Turn the ignition off. Disconnect the Driver Door Lock Switch connector. Measure the voltage of the Fused B+ circuit. Is the voltage above 10.0 volts? Yes --> Go To 5 No --> Repair the open Fused B+ circuit. Perform BODY VERIFICATION TEST - VER 1 . |
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| 5 | Turn the ignition off. Disconnect the Driver Door Lock Switch connector. Disconnect the BCM "C4" harness connector. Measure the resistance of the Driver Door Switch MUX circuit to ground. Is the resistance below 1000.0 ohms? Yes --> Repair the Driver Door Switch MUX circuit to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 6 |
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| 6 | Turn the ignition off. Ensure the Driver Door Lock Switch is connected before proceeding Disconnect the BCM "C4" harness connector. Measure the resistance of the Driver Door Switch MUX circuit in the BCM C4 connector to ground. Is the resistance below 1000.0 ohms? Yes --> Replace the Driver Door Lock Switch. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 7 |
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| 7 | Turn the ignition off. Ensure the Passenger Door Lock Switch is connected before proceeding Disconnect the BCM "C4" harness connector. Measure the resistance of the Passenger Door Switch MUX circuit in the BCM C4 connector to ground. Is the resistance below 1000.0 ohms? Yes --> Replace the Passenger Door Lock Switch. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 8 |
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| 8 | Turn the ignition off. Disconnect the Passenger Door Lock Switch connector. Disconnect the BCM "C4" harness connector. Measure the resistance of the Passenger Door Switch MUX circuit to ground. Is the resistance below 1000.0 ohms? Yes --> Repair the Passenger Door Switch MUX circuit to ground. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 9 |
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| 9 | If there are no possible causes remaining, view repair. Repair Replace the Body Control Module. Perform BODY VERIFICATION TEST - VER 1 . |
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| 10 | Test both sides of fuse #9 for battery voltage. Is the fuse or circuit open? Yes --> Replace the fuse or repair the open circuit as necessary. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 11 |
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| 11 | Disconnect the Body Control Module C4 connector. Connect a jumper wire from the ground to the Passenger Unlock Relay Output circuit in the C4 connector. Momentarily connect the jumper wire from a fused B(+) supply to the Passenger Lock Output circuit in the C4 connector and observe the door locks. Reverse the jumper wires to drive the motor in the unlock position. Did the door lock and unlock? Yes --> Using the wiring diagram/schematic as a guide, repair the open Lock or Unlock Relay Output circuits as necessary. Perform BODY VERIFICATION TEST - VER 1 . No --> Go To 12 |
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| 12 | Turn the ignition off. Remove the Body Control Module from the Junction Block. Using a 12-volt test light connected to 12-volts, check the Ground circuit. Does the test light illuminate brightly? Yes --> Go To 13 No --> Repair the open Ground circuit through the junction block. Perform BODY VERIFICATION TEST - VER 1 . |
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| 13 | Turn the ignition off. Remove the Body Control Module from the Junction Block. Measure the voltage between the Fused B(+) circuit and ground. Is the voltage above 10.0 volts? Yes --> Go To 14 No --> Replace the Junction Block. Perform BODY VERIFICATION TEST - VER 1 . |
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| 14 | If there are no possible causes remaining, view repair Repair Replace the Body Control Module. Perform BODY VERIFICATION TEST - VER 1 . |
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