DTC Description

DTC DETECTION LOGIC

DTC No.		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
C10B9	77	Parking brake system (Parking brake system)	Diagnosis condition	When parking brake is apply or release
			Signal (terminal)	—
			Threshold	When a electric parking brake system is malfunctioning.
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

note	Confirm if DTC is Stored DTC or Active DTC. If DTC is Active DTC, proceed with Diagnosis Procedure. If DTC is Stored DTC, clear DTC. Do not replace the ABS actuator and electric unit (control unit) for a Stored DTC DTC.

Stored DTC DTC	Active DTC DTC
Harness or connector Parking brake actuator Rear brake caliper assembly	Harness or connector Parking brake actuator Rear brake caliper assembly ABS actuator and electric unit (control unit)

FAIL-SAFE

The following functions are suspended.

Electric parking brake function
hill start assist function

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE" has been previously conducted, always electric motor switch OFF (Auto ACC function OFF) before conducting the next test.

2.CHECK DTC DETECTION

With M.U.T.-III SE

Electric motor switch OFF (Auto ACC function OFF) to ON.
Push the parking brake switch.
caution
Set the electric shift selector in the P position.
Depress the brake pedal.
Pull the parking brake switch.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C10B9-77" detected?

-1“Active DTC" is displayed: Refer to Diagnosis Procedure

-2“Stored DTC" is displayed: INSPECTION END (Erase the memory of Diagnostic Trouble Code results.)

-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident

-2Confirmation after repair: INSPECTION END