Last Modified: 4-30-2014 6.6 J Doc ID: RM000001AM9001X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: NAVIGATION: NAVIGATION SYSTEM: Multi-display Power Source Circuit; 2006 MY LX470 [05/2005 -        ]

Multi-display Power Source Circuit

DESCRIPTION

This circuit is the power source circuit to operate the multi-display assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSE (ACC, ECU-B1, ECU-IG)

(a) Remove the ACC, ECU-B1, ECU-IG fuses from the cowl side junction block LH.

(b) Measure the resistance of the fuses.

Standard resistance:

Below 1 Ω

NG

REPLACE FUSE

OK

2.

CHECK WIRE HARNESS (MULTI-DISPLAY - BATTERY AND BODY GROUND)

(a) Disconnect the M5 display connector.

(b) Measure the resistance of the wire harness side connector.

Standard resistance:

Tester Connection

Specified Condition

M5-3 (GND1) - Body ground

Below 1 Ω

(c) Measure the voltage of the wire harness side connector.

Standard voltage:

Tester Connection

Condition

Specified Condition

M5-11 (ACC) - M5-3 (GND1)

Ignition switch ACC

10 to 14 V

M5-10 (IG) - M5-3 (GND1)

Ignition switch ON

10 to 14 V

M5-12 (B1) - M5-3 (GND1)

Always

10 to 14 V
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE