DTC C0051:95 [START STOP UNIT]

id0902p6027700

System malfunction location

Steering angle sensor assembly malfunction

Detection condition

•  The start stop unit receives the following signals with the ignition switched ON (engine off or on).

―  Steering angle sensor assembly malfunction from EPS control module for 1 s or more

―  Improper assembly of steering angle sensor at 360°

―  Steering wheel angle of 720° or more for 0.048 s or more

Fail-safe

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Possible cause

•  DTCs are stored in the EPS control module.

•  Improper assembly of steering angle sensor

•  Start stop unit malfunction

System wiring diagram

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System malfunction location	Steering angle sensor assembly malfunction
Detection condition	• The start stop unit receives the following signals with the ignition switched ON (engine off or on). ― Steering angle sensor assembly malfunction from EPS control module for 1 s or more ― Improper assembly of steering angle sensor at 360° ― Steering wheel angle of 720° or more for 0.048 s or more
Fail-safe	—
Possible cause	• DTCs are stored in the EPS control module. • Improper assembly of steering angle sensor • Start stop unit malfunction
System wiring diagram	—

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY EPS CONTROL MODULE DTCs • Perform the DTC inspection for the EPS control module using the M-MDS. (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.) • Is the DTC displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)
1		No	Go to the next step.
2	VERIFY STEERING ANGLE SENSOR INSTALLATION CONDITION • Verify the steering angle sensor installation condition. (See CLOCK SPRING REMOVAL/INSTALLATION.) • Is the steering angle sensor installed correctly?	Yes	Go to the next step.
2		No	Install the steering angle sensor correctly, then go to the next step. (See CLOCK SPRING REMOVAL/INSTALLATION.)
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Clear DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) • Switch the ignition ON (engine off or on) and wait for 1 s or more. • Perform the DTC inspection for the start stop unit using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) • Is DTC C0051:95 displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION.)
3		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [START STOP UNIT].)
4		No	DTC troubleshooting completed.