Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001BBQ001X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C1552/52; PIG Power Source Circuit; 2007 MY LX470 [08/2006 -        ]

DTC

C1552/52

PIG Power Source Circuit

DESCRIPTION

The VGRS ECU monitors PIG (motor power source voltage). If the ECU detects a malfunction, it turns on the warning light, records the DTC and stops VGRS operation.

DTC No.

DTC Detection Condition

Trouble Area

C1552/52

The system checks that the IG voltage is 9 to 16 V, and the PIG terminal voltage is less than 6 V for 2.4 sec.
  • VGRS fuse
  • Power source circuit
  • VGRS ECU

WIRING DIAGRAM

PROCEDURE

1.

CHECK MOTOR POWER SOURCE VOLTAGE (PIG)

(a) Record and clear VGRS DTCs.

(b) Start the engine and measure the voltage between terminals V10-1 (PIG) and V10-2 (PGND) of the VGRS ECU.

Result

Result

Proceed to

9 to 16 V

A

Below 9 V

B

Above 16 V

C
B

CHECK OR REPAIR HARNESS AND VGRS FUSE

C

CHECK AND REPAIR CHARGING SYSTEM

A

2.

CHECK VGRS FOR DTC C1552/52

(a) Is DTC C1552/52 present?

NOTICE:

Fault may be intermittent. Check harness and connectors carefully and retest.

YES

REPLACE VGRS ECU

NO

NO FAULT DETECTED