DTC Description

DTC DETECTION LOGIC

DTC No.		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
C1056	16	Battery power supply (Battery power supply)	Diagnosis condition	When electric motor switch ON.
			Signal (terminal)	Ignition power supply
			Threshold	When ignition power supply voltage is 10 V or less.
			Diagnosis delay time	1 seconds 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 Charge system ABS actuator and electric unit (control unit) power supply system Fuse Fusible link 12V battery	Harness or connector Charge system ABS actuator and electric unit (control unit) ABS actuator and electric unit (control unit) power supply system Fuse Fusible link 12V battery

FAIL-SAFE

The following functions are suspended.

ASC function
TCS function
ABS function
EBD function
Brake limited slip differential (BLSD) function
Brake assist function
Brake force distribution function
hill start assist function
Electric parking brake function
Hill Descent Control funciton

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).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1056-16" 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