If the power windows operate properly under RAP conditions and the Radio or VIU do not operate properly, the condition may exist in the class 2 circuit of the Radio, VIU or IPC, or one of the individual modules. Refer to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Retained Accessory Power (RAP) Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the RAP Diagnostic System Check? | Go to Step 2 | |
2 |
Do the power windows and power quarter vents operate for approximately 10 minutes? | Go to Step 3 | Go to Step 6 |
3 |
Do the radio and VIU operate for approximately 10 minutes? | System OK | Go to Step 4 |
4 | Test the RAP control circuit at the IPC for an open or intermittent condition. Refer to Circuit Testing , Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 5 |
5 |
Important: Perform the setup procedure for the IPC. Refer to Instrument Cluster Programming/Synchronization in Instrument Panel, Gages and Console. Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages and Console. Did you complete the replacement? | Go to Step 14 | -- |
6 |
Does the test lamp illuminate on both circuits? | Go to Step 7 | Go to Step 11 |
7 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 8 |
8 | Test the control circuit of the RAP relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 10 |
9 | Inspect for poor connections at the RAP relay. 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 14 | Go to Step 12 |
10 | Inspect for poor connections at the harness connector of the BCM. 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 14 | Go to Step 13 |
11 |
Did you complete the repair? | Go to Step 14 | -- |
12 | Replace the RAP relay. Did you complete the replacement? | Go to Step 14 | -- |
13 | Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 6 |