Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the radio/audio system operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 | Verify that the radio is always or never muted. Does the radio operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Is voltage present in CKT 835 (DK GRN)? | 9-16 V | Go to Step 9 | Go to Step 4 |
4 | Disconnect the vehicle interface unit (VIU). Is voltage present in CKT 835 (DK GRN)? | -- | Go to Step 11 | Go to Step 5 |
5 |
Is a short to ground present in CKT 835 (DK GRN)? | -- | Go to Step 6 | Go to Step 7 |
6 | Repair the short to ground in CKT 835 (DK GRN). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 12 | -- |
7 | Test CKT 835 (DK GRN) for an open circuit. Is an open present in CKT 835 (DK GRN)? | -- | Go to Step 8 | Go to Step 10 |
8 | Repair the open in CKT 835 (DK GRN). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the repair complete | -- | Go to Step 12 | -- |
9 |
Important: Data transmission can be identified as a momentary change in frequency. Monitor the DMM while operating the phone.
Is data transmission observed? | 100-1000 HZ | Go to Step 10 | Go to Step 11 |
10 | Service the radio. Refer to Radio Replacement . Is service of the radio complete? | -- | Go to Step 12 | -- |
11 | Service the vehicle interface unit (VIU). Is service of the VIU complete? | -- | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
