GSIC - Global Service Information Center

### AUDIO AND VISUAL SYSTEM > Radio Receiver Power Source Circuit

## for Preparation Click here

## DESCRIPTION

This circuit provides power to the radio receiver.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.INSPECT FUSE (DCC, RAD, ACC)

1. Remove the ACC fuse from the instrument panel junction block.

1. Remove the DCC and RAD fuses from the engine room relay block.

1. Measure the resistance of the fuses.

   Standard resistance:
     Below 1 Ω

| NG |

REPLACE FUSE

OK |

2.CHECK WIRE HARNESS (RADIO RECEIVER ASSEMBLY - BATTERY AND BODY GROUND)

1. Disconnect the R1 connector.

1. Measure the voltage and resistance of the wire harness side connector.

   Standard voltage:

     Tester Connection | Condition | Specified Condition
     R1-4 (B) - Body ground | Always | 10 to 14 V
     R1-3 (ACC) - Body ground | Ignition switch ACC | 10 to 14 V

   Standard resistance:

     Tester Connection | Condition | Specified Condition
     R1-7 (GND) - Body ground | Always | Below 1 Ω

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE CHART