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NAVIGATION SYSTEM (for HDD) > Stereo Component Amplifier Power Source Circuit

for Preparation Click here


DESCRIPTION

This is the power source circuit to operate the stereo component amplifier assembly.

WIRING DIAGRAM


E187100E01


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY


    E187121E02

  1. Disconnect the L108 stereo component amplifier assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L108-10 (GND) - Body ground
    		Always
    		Below 1 Ω

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L108-5 (+B) - L108-10 (GND)
    		Power switch off
    		11 to 14 V
    L108-12 (ACC) - L108-10 (GND)
    		Power switch on (ACC)
    		11 to 14 V

Text in Illustration 
*1
Front view of wire harness connector
(to Stereo Component Amplifier Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY


    E187121E03

  1. Disconnect the L108 stereo component amplifier assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    L108-9 (AMP+) - L108-10 (GND)
    		Power switch on (IG)
    Audio system playing
    		8 V or higher

Text in Illustration 
*1
Front view of wire harness connector
(to Stereo Component Amplifier Assembly)


NG
Go to step 3
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)  

3.CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - NAVIGATION RECEIVER ASSEMBLY)


    E187121E04

  1. Disconnect the L108 stereo component amplifier assembly connector.



    E187119E04

  1. Disconnect the L120 navigation receiver assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L108-9 (AMP+) - L120-9 (AMP)
    		Always
    		Below 1 Ω
    L108-9 (AMP+) - Body ground
    		Always
    		10 kΩ or higher

Text in Illustration 
*1
Front view of wire harness connector
(to Stereo Component Amplifier Assembly)
*2
Front view of wire harness connector
(to Navigation Receiver Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE NAVIGATION RECEIVER ASSEMBLY (Click here)