DTC Description

DTC DETECTION LOGIC

DTC No.	M.U.T.-III SE screen items (Trouble diagnosis content)	DTC Detection Condition
U1CA8-02	Rear right seat heater communication (Rear seat heater RH communication)	Diagnosis condition	READY indicator: ON
		Signal (terminal)	LIN (heated seat) signal (terminal #45)
		Threshold	A/C amp. is not transmitting or receiving LIN communication with second seat heater RH
		Diagnosis delay time	2 seconds or more.

POSSIBLE CAUSE

Fuse
Harness or connectors (Second seat heater RH circuit is open or short to ground)
Second seat cushion heater RH
A/C amp.

FAIL-SAFE

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DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

With M.U.T.-III SE

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

Is DTC detected?

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

-2Confirmation after repair: INSPECTION END