Radio Receiver Power Source Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM (for CrewMax): Radio Receiver Power Source Circuit

Radio Receiver Power Source Circuit

DESCRIPTION

This circuit provides power to the radio receiver.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (RAD NO. 1, ACC)
(a) Disconnect the RAD NO. 1 fuse from the engine room junction block.
(b) Disconnect the ACC fuse from the main body ECU.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (RECEIVER - BATTERY AND BODY GROUND)




(a) Disconnect the K1*1, K4*2 and K9*2 receiver connectors.
HINT: *1: for Built-in Type Amplifier System
*2: for Separate Type Amplifier System
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for Built-in Type Amplifier System






for Separate Type Amplifier System






(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
for Built-in Type Amplifier System






for Separate Type Amplifier System






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE