PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: Reverse Signal Circuit; 2007 MY LX470 [08/2006

Last Modified: 7-3-2017	6.8:8.0.40	Doc ID: RM0000017CD005X
Model Year Start: 2007	Model: LX470	Prod Date Range: [08/2006 - ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM: Reverse Signal Circuit; 2007 MY LX470 [08/2006 - ]

Reverse Signal Circuit

DESCRIPTION

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

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

(a) Disconnect the T31 ECU connector.

(b) Disconnect the P1 switch connector.

Standard resistance:

Tester Connection	Specified Condition
T31-27 (REV) - P1-1	Below 1 Ω
T31-27 (REV) - Body ground	10 kΩ or higher

REPAIR OR REPLACE HARNESS AND CONNECTOR

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

REPAIR OR REPLACE HARNESS AND CONNECTOR

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

INSPECT PARK / NEUTRAL POSITION SWITCH

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE