Test Description
WARNING: This page is about a different car, the 2005 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 2: This step checks that the VCIM is sending out the proper supply voltage.
DTC B2476: CELLULAR PHONE SELECT SERVICE SWITCH
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ONSTAR SCHEMATICS Connector End View Reference: CELLULAR COMMUNICATION CONNECTOR END VIEWS |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to DIAGNOSTIC SYSTEM CHECK - VEHICLE in Vehicle DTC Information |
| 2 |
|
9 V | Go to Step 4 | Go to Step 3 |
| 3 | Test the keypad supply voltage circuit for an open or short to ground. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 8 |
| 4 | Test the keypad supply voltage circuit for a short to voltage. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 5 |
| 5 | Test the keypad ground circuit for an open. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 6 |
| 6 | Test the keypad signal circuit for a short to voltage. Refer to CIRCUIT TESTING
and WIRING REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 7 |
| 7 | Inspect for poor connections at the harness connector of the rearview mirror. Refer to TESTING FOR INTERMITTENT CONDITIONS & POOR CONNECTIONS
and CONNECTOR REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 9 |
| 8 | Inspect for poor connections at the harness connector of the Vehicle Communication Interface Module (VCIM). Refer to TESTING FOR INTERMITTENT CONDITIONS & POOR CONNECTIONS
and CONNECTOR REPAIRS
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 11 | Go to Step 10 |
| 9 | Replace the rearview mirror. Refer to REARVIEW MIRROR REPLACEMENT (EXCEPT DD8)
or REARVIEW MIRROR REPLACEMENT (DD8)
in Stationary Windows. Did you complete the replacement? |
- | Go to Step 11 | - |
| 10 | Replace the VCIM. Refer to CONTROL MODULE REFERENCES
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 11 | - |
| 11 |
|
- | Go to Step 2 | System OK |