DTC Description

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
B24A1-16	A/C AUTO AMP. POWER SUPPLY (Air conditioning automatic amplifier power supply)	Diagnosis condition	When electric motor switch is ON
		Signal (Terminal)	Accessory power supply
		Threshold	Open or shorted to ground
		Diagnosis delay time	30 seconds or more

POSSIBLE CAUSE

A/C amp.
Harness or connector (accessory power supply circuits is open or shorted to ground)

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