Diagnostic Procedure

DTC C0051:25, C0051:62, C0051:64, C0051:67, C0051:84, C0051:85 OR C0051:86 (DSC HU/CM) DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY WHETHER MALFUNCTION IS PAST OR PRESENT Switch the ignition ON (engine off or on). Is the TCS/DSC indicator light illuminated?	Yes	Go to the next step.
1		No	Clear the DTC from the memory and go to the repair completion verification 2. (See CLEARING DTC .)
2	INSPECT EPS CONTROL MODULE FOR MALFUNCTION Perform the DTC inspection for EPS control module. (See DTC INSPECTION .) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [ELECTRIC POWER STEERING (EPS) (US)] .)
2		No	Go to the next step.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Clear the DTC recorded in the memory. (See CLEARING DTC .) Start the engine and drive the vehicle at 20 km/h {12 mph} or more. Gradually slow down and stop vehicle. Perform the DTC inspection for the DSC HU/CM. (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION [L.H.D. (US)] .)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED Perform the DTC inspection. (See DTC INSPECTION .) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.