Radio Receiver Power Source Circuit: Procedure

INSPECT RADIO RECEIVER ASSEMBLY

Disconnect the F1 radio receiver assembly connector.

Fig 1: Identifying F1 Radio Receiver Connector
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Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
F1-20 (GND) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
F1-1 (B) - F1-20 (GND)	Always	11 to 14 V
F1-11 (ACC) - F1-20 (GND)	Engine switch on (ACC)	11 to 14 V

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to Radio Receiver Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 2

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE