DTC Description

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
U1CB1-02	A/C control 2 communication (Air conditioning control 2 communication)	Diagnosis condition	When electric motor switch is ON
		Signal (Terminal)	LIN (rear air control) signal
		Threshold	Receive internal circuit error message via rear air control to LIN communication
		Diagnosis delay time	2 second or more

POSSIBLE CAUSE

Rear air control (internal circuit malfunction)

FAIL-SAFE

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DTC CONFIRMATION PROCEDURE

1.PERFORM DIAGNOSTIC TROUBLE CODE

With M.U.T.-III SE

Change the power supply mode of the electric motor switch to ON (READY indicator: ON).
Select “Diagnostic Trouble Code” mode of “HVAC” using M.U.T.-III SE.
Check DTC.

Is DTC detected?

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

-2Confirmation after repair: INSPECTION END