Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the OnStar® Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does "Connecting to OnStar" play through the audio system? | -- | Go to Step 7 | Go to Step 3 |
3 | Test the Mono audio signal circuit for short, an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the problem? | -- | Go to Step 7 | Go to Step 4 |
4 | Test the Mono audio common circuit for short to ground, an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the problem? | -- | Go to Step 7 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the VIU. 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 7 | Go to Step 6 |
6 | Replace the vehicle interface unit (VIU). Refer to OnStar Vehicle Interface Unit Replacement in Cellular Communications. Did you complete the repair? | -- | Go to Step 7 | -- |
7 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK | -- |
