Last Modified: 4-30-2014 6.6 C Doc ID: RM000001BBK000X
Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 -           ]
Title: STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C1522/22; Motor Circuit Malfunction; 2006 MY LX470 [05/2005 -        ]

DTC

C1522/22

Motor Circuit Malfunction

DESCRIPTION

The VGRS ECU drives the actuator based on the steering angle sensor signal and the vehicle speed signal.

If the VGRS ECU detects excessive current flowing into the actuator, or a malfunction inside the ECU, it turns on the warning light, records the DTC, and stops VGRS operation.

DTC No.

DTC Detection Condition

Trouble Area

C1522/22

The system detects a malfunction in the motor drive circuit.

  • VGRS actuator
  • VGRS ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

Since only the actuator can be checked in this procedure, if it is normal, the VGRS ECU is faulty.

PROCEDURE

1.

INSPECT VGRS ACTUATOR FOR AN OPEN CIRCUIT

(a) Turn the ignition switch OFF.

(b) Disconnect the V13 actuator connector from the VGRS ECU.

(c) Measure the resistance of the actuator connector.

Standard resistance:

Tester Connection

Specified Condition

1 (BMV) - 5 (BMU)

0.1to 1 Ω

5 (BMU) - 6 (BMW)

(d) Check the continuity of the actuator connector and body ground.

OK:

Tester Connection

Specified Condition

1 (BMV) - Body ground

No Continuity

5 (BMU) - Body ground

6 (BMW) - Body ground

OK

REPLACE VGRS ECU

NG

REPLACE VGRS ACTUATOR