Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001D1M003X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: NAVIGATION: NAVIGATION SYSTEM: Only Sound of Radio, Cassette Tape or CD cannot be Heard from Speaker; 2007 MY LX470 [08/2006 -        ]

Only Sound of Radio, Cassette Tape or CD cannot be Heard from Speaker

INSPECTION PROCEDURE

PROCEDURE

1.

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

(a) Disconnect the R37 receiver connector.

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

Standard resistance:

Tester Connection

Specified Condition

R37 - 20 (GND) - Body ground

Below 1 Ω

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

Standard voltage:

Tester Connection

Condition

Specified Condition

R37-1 (+B) - Body ground

Always

10 to 14 V

R37-11 (ACC) - Body ground

Ignition switch ACC or ON

10 to 14 V

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE RADIO RECEIVER ASSEMBLY