Up to 08/2009

MF1A TRANSFER / 4WD / AWD: ACTIVE TORQUE CONTROL 4WD SYSTEM: C1297: Steering Angle Sensor
C1297 - Steering Angle Sensor

DESCRIPTION

- The 4WD control ECU determines that the vehicle is turning based on the signals sent from the steering angle sensor.

- The steering angle sensor signal is sent to the 4WD control ECU via the CAN communication system.

- The 4WD control ECU detects the amount of steering wheel movement and performs "slip control at vehicle start up", according to the amount of movement, and "slip control" to secure high turning performance.





WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Check the condition of each related circuit connector before troubleshooting Electronic Circuit Inspection Procedure.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Turn the engine switch off.

(c) Turn the engine switch on (IG) again and check that no CAN communication system DTC(s) is output Diagnosis System.

(d) Start the engine.

(e) Drive the vehicle and turn the steering wheel to the right and left at a speed of 35 km/h (24 mph) and check that no brake control system (steering angle sensor) DTC (C1432,C1433 or C1434) is output Vehicle Stability Control System.

Result:





HINT
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

C -- REPAIR OR REPLACE CIRCUIT INDICATOR OUTPUT CODE (STEERING ANGLE SENSOR CIRCUIT) Vehicle Stability Control System

B -- REPAIR CIRCUIT INDICATOR OUTPUT CODE (CAN COMMUNICATION SYSTEM) CAN Communication System
A -- Continue to next step.

2. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BATTERY)

(a) Remove the steering wheel and the column cover lower.





(b) Make sure that there is no looseness at the locking part and the connecting part of the connectors.

(c) Disconnect the steering angle sensor connector.

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

Standard Voltage:





Text in Illustration





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

3. CHECK WIRE HARNESS (STEERING ANGLE SENSOR - BODY GROUND)

(a) Turn the engine switch off.





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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE SPIRAL CABLE (STEERING ANGLE SENSOR) Removal