C15A6

VARIABLE GEAR RATIO STEERING: VARIABLE GEAR RATIO STEERING SYSTEM: C15A2/62: Actuator Malfunction

DTC C15A2/62 - Actuator Malfunction

DTC C15A6/62 - Actuator Malfunction

DESCRIPTION

The steering control ECU drives the actuator based on steering angle sensor signals and vehicle speed signals.
If the steering control ECU detects excessive current flowing into the steering actuator, or an internal malfunction, it will turn on the master warning light, store DTC C15A2/62, and stop VGRS operation.
If the steering control ECU detects a malfunction in the motor drive circuit, it will turn the master warning light on, store DTC C15A6/62, and stop VGRS operation.

WIRING DIAGRAM

INSPECTION PROCEDURE
HINT: Only the actuator can be checked in this procedure. If it is normal, the steering control ECU is faulty.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR) Service and Repair

(a) Disconnect the E83 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:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK STEERING ACTUATOR Steering Actuator

(a) Disconnect the E83 steering control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
HINT: The resistance must be measured with the steering actuator connector connected.

Standard Resistance:

NG -- REPLACE STEERING ACTUATOR ASSEMBLY
OK -- Continue to next step.
4. CHECK DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result

B -- REPLACE STEERING CONTROL ECU
A -- REPLACE STEERING ACTUATOR ASSEMBLY