- Steering angle sensor
- CAN communication
- 4WD control ECU
- Wire harness and connector
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM10000000103R5 |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - ] |
| Title: MF1A (TRANSFER / 4WD / AWD): ACTIVE TORQUE CONTROL 4WD SYSTEM: C1297; Steering Angle Sensor; 2017 - 2020 MY Sienna [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. |
|
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](/t3Portal/stylegraphics/info.gif)
).
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Clear the DTC (See page
).
(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
).
(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
).
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) (See page
|
| C |
|
REPAIR OR REPLACE CIRCUIT INDICATOR OUTPUT CODE (STEERING ANGLE SENSOR CIRCUIT) (See page
|
|
|
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 |
|
|
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 |
|
|