Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM0000019ZN006X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: Position Sensor Power Source Circuit; 2007 MY LX470 [08/2006 -        ]

Position Sensor Power Source Circuit

DESCRIPTION

Power to the position sensor is output from the ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK TILT AND TELESCOPIC ECU (S5V1, S5V2 VOLTAGE)

(a) Remove the ECU with the connectors still connected.

(b) Measure the voltage between terminals S5V1 and SG1, or S5V2 and SG2 of the T9 ECU connector.

Standard voltage:

4.5 to 5.5 V
NG

GO TO STEP 3

OK

2.

CHECK WIRE HARNESS (MOTOR - ECU)

(a) Check for open circuit in the harness and connector between terminals S5V1 and SG1, or S5V2 and SG2 of the ECU connector.

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE MOTOR

3.

CHECK WIRE HARNESS (MOTOR - ECU)

(a) Check for short circuit in the harness between terminals S5V1 and SG1, or S5V2 and SG2 of the ECU connector.

NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE