Step
| Action
| Value(s)
| Yes
| No
|
1
| Was the Radio/Audio System Diagnostic System Check performed?
| --
|
Go to Step 2
| Go to
Diagnostic System Check - Radio/Audio System
.
|
2
|
- Turn the ignition switch to the ON position.
- Turn the radio ON.
Does the radio display operate properly?
| --
|
Go to Step 7
|
Go to Step
3
|
3
|
- Disconnect the radio connector.
- Use the DMM to measure the voltage between terminal F1 of the
radio connector and a known good ground.
Is the measured voltage within the specified value?
| B+
|
Go to Step 5
|
Go to Step
4
|
4
|
- Locate an open or a high resistance in circuit A52.
- Repair the open or the high resistance in circuit A52.
Is the repair complete?
| --
|
Go to Step
8
| --
|
5
|
- Use the DMM to measure the resistance between terminal E16 and
a known good ground.
- Use the DMM to measure the resistance between terminal F5 and
a known good ground.
Is the measured resistance for both measurements within the specified
value?
| Less than 5 ohms
|
Go to Step 7
|
Go to Step 6
|
6
|
- Locate an open or a high resistance in circuits F49 and/or F40.
- Repair the open or the high resistance in circuits F49 and/or
F40.
Is the repair complete?
| --
|
Go to Step
8
| --
|
7
| Replace the radio. Refer to
Radio Replacement
in Entertainment.
Is the replacement complete?
| --
|
Go to Step
8
| --
|
8
|
- Connect all connectors and components that were disconnected.
- Verify that the radio controls operate properly.
Do the radio controls operate properly?
| --
| System OK
|
Go to Step 1
|
