C15C1

STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C15C1/74,C15C2/74: Steering Angle Sensor Malfunction

DESCRIPTION

The steering control ECU detects a steering angle sensor malfunction by receiving an error signal from the steering angle sensor via CAN communication. If the steering control ECU detects this error signal, it will turn the master warning light on, store these DTCs, and stop VGRS operation.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs in the CAN communication system Diagnosis System.

Result

B -- GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) CAN Communication System
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU +B1 TERMINAL VOLTAGE)

(a) 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.

3. CHECK STEERING CONTROL ECU (+B0 TERMINAL VOLTAGE)

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

Standard voltage:

NG -- REPLACE STEERING CONTROL ECU Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR)

(a) Disconnect the L21 steering angle sensor connector.

(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.

5. CHECK STEERING ANGLE SENSOR

(a) Disconnect the L21 steering angle sensor connector.

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

Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE STEERING ANGLE SENSOR Removal