DTC Description

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
B24A0-49	A/C AUTO AMP. (Air conditioning automatic amplifier)	Diagnosis condition	When electric motor switch is ON
		Signal (Terminal)	—
		Threshold	A malfunction is detected in A/C amp. internal EEPROM memory functions.
		Diagnosis delay time	2 second or more

POSSIBLE CAUSE

A/C amp.

FAIL-SAFE

—

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