DTC C1297: Steering Angle Sensor [08/2020 - ]: Procedure

1. Clear the DTC.

   Chassis > Four Wheel Drive > Clear DTCs 

2. Turn the engine switch off.
3. Turn the engine switch on (IG) again and check that no CAN communication system DTC(s) is output.

   Refer to DIAGNOSIS SYSTEM [08/2020 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - 09/2022] , or refer to DIAGNOSIS SYSTEM [09/2022 - ]

4. Start the engine.
5. Drive the vehicle at a speed of 35 km/h (24 mph), turn the steering wheel to the right and left and check that no electronically controlled brake system DTC (steering sensor) is output.

   Chassis > Brake/EPB > Trouble Codes 

   Result

   Result	Proceed to
   Neither CAN communication system DTC nor electronically controlled brake system DTC is output	A
   CAN communication system DTC is output	B
   Electronically controlled brake system DTC (steering sensor) is output	C

   HINT: 

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

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

Result: 

C 

REPAIR CIRCUIT INDICATED BY OUTPUT CODE (ELECTRONICALLY CONTROLLED BRAKE SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - ] 

Result: 

A 

See step  2

1. Remove the steering wheel assembly and the lower steering column cover sub-assembly.
2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.
3. Disconnect the G62 steering sensor connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Steering Sensor)

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G62-4 (BAT) - Body ground	Always	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Turn the engine switch on (IG).
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Steering Sensor)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G62-9 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 

Result: 

OK 

See step  4

1. Turn the engine switch off.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G62-6 (ESS) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Chassis / Four Wheel Drive / Data List.
5. Read the value displayed on the Techstream.

   Chassis > Four Wheel Drive > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Steering Angle Value	Steering angle value	Min.: -3276.8° Max.: 3276.7°	Increase: Left turn Decrease: Right turn	Changes in proportion with the amount of steering wheel rotation during steering operation.

   Chassis > Four Wheel Drive > Data List 

   Tester Display
   Steering Angle Value

   OK

   The steering sensor value changes in accordance with the steering wheel movement.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE 4WD ECU ASSEMBLY. Refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

Result: 

NG 

REPLACE STEERING SENSOR. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ]