C15A6

STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C15A2/62, 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 predriver circuit, it will turn the master warning light on, store DTC C15A6/62, and stop VGRS operation.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT
The actuator only can be checked in this procedure. If it is normal, the steering control ECU is faulty.

PROCEDURE

1. CHECK WIRE HARNESS (POWER SOURCE CIRCUIT)

(a) Turn the engine switch off.

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

Resistance:

NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.

2. CHECK WIRE HARNESS

(a) Turn the engine switch off.

(b) Disconnect the connectors from the steering control ECU and the steering actuator.

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

Resistance:

NG -- REPAIR OR REPLACE WIRE HARNESS
OK -- Continue to next step.

3. CHECK STEERING ACTUATOR

(a) Connect the connector to the steering actuator.

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

Resistance:

NG -- REPLACE STEERING ACTUATOR
OK -- Continue to next step.

4. CHECK DTC

(a) Check for DTCs Variable Gear Ratio Steering System.

OK:

DTC C15A1/61 is not output.

NG -- REPLACE STEERING ACTUATOR

OK -- REPLACE STEERING CONTROL ECU