DTC Description

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
B24B4-02	A/C CONTROL COMM (Air conditioning control communication)	Diagnosis condition	When electric motor switch is ON
		Signal (Terminal)	LIN (A/C switch assembly) signal
		Threshold	Receive internal circuit error message via A/C switch assembly to LIN communication
		Diagnosis delay time	30 second or more

POSSIBLE CAUSE

A/C switch assembly (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