Test Description
WARNING: This page is about a different car, the 2007 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 1: This step determines if the malfunction is present.
- 3: This step tests for an open in the vehicle speed signal circuit between the instrument cluster and the navigation radio. A short would cause the instrument cluster to malfunction as well as the navigation system.
DTC B0001
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Radio/Navigation System Schematics Connector End View Reference: Entertainment/Communication Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Verify the instrument cluster speedometer operation. Does the speedometer work on the instrument cluster? |
Go to Step 3 | Go to LINK |
| 3 | Test the vehicle speed signal circuit for an open between the instrument cluster and the navigation radio. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 6 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the navigation radio. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 6 | Go to Step 5 |
| 5 | Replace the navigation radio. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
Go to Step 6 | - |
| 6 |
|
Go to Step 2 | System OK |