Radio Inoperative

*RADIO INOPERATIVE









For a complete Audio System Circuit Diagram, Schematics and Diagrams.

Diagnostic Test
MEASURE RADIO FUSED IGNITION SWITCH OUTPUT CIRCUIT VOLTAGE
NOTE: Inspect Fuse 5 and Fuse 8 located in the Underhood Accessory Fuse Block. If either fuse is open, repair the cause of the open fuse before continuing.





Turn the ignition off.
Disconnect the Radio harness connector.

NOTE: Check connector - Clean/repair as necessary.

Turn the ignition on.
Measure the voltage of the Fused Ignition Switch Output circuit at the Radio harness connector cavity 7 (connector A).
Is the voltage above 10 volts?

Yes

- Go to

No

- Repair the Radio Fused Ignition Switch Output circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

MEASURE RADIO FUSED B(+) CIRCUIT VOLTAGE




With the ignition on.
Measure the voltage of the Fused B(+) circuit at the Radio harness connector cavity 4 (connector A).
Is the voltage above 10 volts?

Yes

- Go to

No

- Repair the Radio Fused B(+) circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

MEASURE RADIO GROUND CIRCUIT RESISTANCE




Turn the ignition off.
Measure the resistance between ground and the Ground circuit at cavity 8 (connector A) of the Radio harness connector.
Is the resistance below 5.0 ohms?

Yes

- Replace the Radio. Removal.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Repair the Ground circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test