Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VIQA
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1297; Steering Angle Sensor; 2016 MY Sienna [12/2015 - 08/2016]

DTC

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.

DTC No.

DTC Detection Condition

Trouble Area

C1297

When voltage of 4WD control ECU IG terminal is 9.5 V or more, and steering angle sensor malfunction signal is received.
  • Steering angle sensor
  • CAN communication
  • 4WD control ECU
  • Wire harness and connector

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

Check the condition of each related circuit connector before troubleshooting (See page 2016 - 2020 MY Sienna [12/2015 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTC (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: DTC CHECK / CLEAR ).

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON again and check that no CAN communication system DTC(s) is output (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: DIAGNOSTIC TROUBLE CODE CHART ).

(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 (See page 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM ).

Result

Result

Proceed to

Neither CAN communication system DTC nor brake control system DTC is output

A

CAN communication system DTC is output

B

Brake control system (steering angle sensor) DTC (C1432, C1433 or C1434) is output

C

HINT:

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

B

REPAIR CIRCUIT INDICATOR OUTPUT CODE (CAN COMMUNICATION SYSTEM)

C

REPAIR OR REPLACE CIRCUIT INDICATOR OUTPUT CODE (STEERING ANGLE SENSOR CIRCUIT)

A

2.

CHECK HARNESS AND CONNECTOR (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:

Tester Connection

Switch Condition

Specified Condition

D22-5 (IG) - Body ground

Ignition switch ON

11 to 14 V

D22-6 (BAT) - Body ground

Always

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Steering Angle Sensor)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BODY GROUND)

(a) Turn the ignition switch off.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D22-2 (ESS) - Body ground

Always

Below 1 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Steering Angle Sensor)
OK

REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR