Home Steering Steering Column VARIABLE GEAR RATIO STEERING: VARIABLE GEAR RATIO STEERING SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Steering Section: Steering Column
Model Year: 2008 Model: LX570 Doc ID: RM000000YU800IX
Title: VARIABLE GEAR RATIO STEERING: VARIABLE GEAR RATIO STEERING SYSTEM: DESCRIPTION (2008 LX570)

DTC

C15A5/65

Actuator Malfunction

DESCRIPTION

If the steering control ECU detects a malfunction in the lock mechanism, it will turn the master warning light on, store DTC C15A5/65, and stop VGRS operation.

DTC Code

DTC Detection Condition

Trouble Area

C15A5/65

The steering control ECU detects that the LG terminal voltage is abnormal.

  • Harness or connector
  • Steering actuator
  • Steering control ECU

WIRING DIAGRAM



INSPECTION PROCEDURE

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)



(a) Disconnect the E84 steering control ECU connector.

(b) Disconnect the E85 steering actuator connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E84-3 (LV) - E85-7 (LV+)

Always

Below 1 Ω

E84-12 (LG) - E85-16 (LG+)

E84-3 (LV) - Body ground

Always

10 kΩ or higher

E84-12 (LG) - Body ground

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

E84-3 (LV) - Body ground

Engine switch on (IG)

Below 1 V

E84-12 (LG) - Body ground

OK

2.

CHECK STEERING ACTUATOR (STEERING CONTROL ECU - STEERING ACTUATOR)

(a) Disconnect the E84 steering control ECU connector.

(b) Reconnect the E85 steering actuator connector.



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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E84-3 (LV) - E84-12 (LG)

Always

10 to 100 Ω

E84-3 (LV) - Body ground

Always

10 kΩ or higher

E84-12 (LG) - Body ground

OK