Dtc C15C1/74 Steering Angle Sensor Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK DTC (CAN COMMUNICATION SYSTEM)
CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU +BI TERMINAL VOLTAGE)
CHECK STEERING CONTROL ECU (+BO TERMINAL VOLTAGE)
CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR)
CHECK STEERING ANGLE SENSOR
DTC C15C1/74 Steering Angle Sensor Malfunction
DTC C15C2/74 Steering Angle Sensor B+ 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.
| DTC Code | DTC Detection Condition | Trouble Area |
| C15C1/74 | The steering control ECU receives a steering angle sensor malfunction signal via CAN communication. | Steering angle sensor
Harness or connector
CAN communication system
Steering control ECU
|
| C15C2/74 | The steering control ECU receives a B+ open circuit signal from the steering angle sensor via CAN communication. | Steering angle sensor
Harness or connector
CAN communication system
Steering control ECU
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK DTC (CAN COMMUNICATION SYSTEM) |
Using the intelligent tester, check if the CAN communication system is functioning normally ( for LHD, for RHD).
Result| Result | Proceed to |
| DTC is not output | A |
| DTC is output (for LHD) | B |
| DTC is output (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) ()
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| | GO TO CAN COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) ()
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| 2.CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU +BI TERMINAL VOLTAGE) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| E77-10 (+BI) - Body ground | Always | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.CHECK STEERING CONTROL ECU (+BO TERMINAL VOLTAGE) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| E79-1 (+BO) - Body ground | Always | 11 to 14 V |
ResultResult
Result | Proceed to |
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| | REPLACE STEERING CONTROL ECU ()
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| | REPLACE STEERING CONTROL ECU ()
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| 4.CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR) |
Disconnect the E11 steering angle sensor connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| E11-1 (IG) - Body ground | Engine switch on (IG) | 11 to 14 V |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E11-2 (ESS) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 5.CHECK STEERING ANGLE SENSOR |
Disconnect the E11 steering angle sensor connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| E11-3 (BAT) - E11-2 (ESS) | Engine switch on (IG) | 11 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
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| REPLACE STEERING ANGLE SENSOR ()
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