Last Modified: 4-30-2014 6.6 J Doc ID: RM0000017CD003X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: Reverse Signal Circuit; 2006 MY LX470 [05/2005 -        ]

Reverse Signal Circuit

DESCRIPTION

  • The television camera ECU receives the reverse signal from the park/neutral position switch.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - PARK / NEUTRAL POSITION SWITCH)

(a) Disconnect the T31 ECU connector.

(b) Disconnect the P1 switch connector.

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

Standard resistance:

Tester Connection

Specified Condition

T31-27 (REV) - P1-1

Below 1 Ω

T31-27 (REV) - Body ground

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

2.

CHECK WIRE HARNESS (TELEVISION CAMERA ECU - BODY GROUND)

(a) Disconnect the T32 ECU connector.

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

Standard resistance:

Tester Connection

Specified Condition

T32-8 (GND1) - Body ground

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

3.

INSPECT PARK / NEUTRAL POSITION SWITCH (REV VOLTAGE)

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

Standard voltage:

Tester Connection

Condition

Specified Condition

T31-27 (REV) - Body ground

Ignition switch ON, shift lever R position

10 to 14 V
NG

INSPECT PARK / NEUTRAL POSITION SWITCH

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE