Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Determines if this is the correct chart for the symptom.
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The door modules connectors C2 and the retained accessory power (RAP) relay share this same battery positive voltage circuit. Disconnecting the RAP relay in this step will isolate the battery positive voltage circuit to the door modules connectors C2, and eliminate the possibility of a RAP function causing the test lamp to illuminate, which could result in a possible false diagnosis of the circuit.
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This step isolates which door module, or which battery positive voltage circuit associated with connectors C2 is shorted to ground.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Control Module Schematics and Power Window Schematics Important: Each door module has its own battery supply circuit, associated with module connectors C2, but the circuits are all fed by the same PWR WDO circuit breaker located in the underhood fuse block. | |||
1 | Did you perform the Door Systems Diagnostic System Check? | Go to Step 2 | |
Does any window operate? | Go to Symptoms - Doors | Go to Step 3 | |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 10 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 5 | |
5 | Operate any one of the power window switches while observing the test lamp. Does the test lamp illuminate? | Go to Step 14 | Go to Step 7 |
Disconnect each door module one at a time, while observing the test lamp. Does the test lamp go out after any module is disconnected? | Go to Step 8 | Go to Step 11 | |
7 | Test the battery positive voltage circuit associated with door module connector C2 of all door modules for an open. Did you find and correct the condition? | Go to Step 15 | Go to Step 9 |
8 | Inspect for a poor connections at the harness connector of the suspect door module. 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 12 |
9 | Inspect for poor connections at the harness connector of the underhood fuse block. 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 |
10 | Repair the poor connection or an open in the PWR WDO circuit breaker battery supply circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
11 | Repair the short to ground in the battery positive voltage circuit associated with door module connector C2. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
12 | Replace the door module that is internally shorted to ground. Refer to Door Control Module Replacement - Front or Door Control Module Replacement - Rear . Did you complete the repair? | Go to Step 15 | -- |
13 | Replace the underhood fuse block. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
14 | Replace the PWR WDO circuit breaker. Did you complete the replacement? | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
