Terminals Of Ecu

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

Fig 1: Identifying Air Conditioning Amplifier Assembly ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance of each terminal of the connectors.

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Symbols (Terminal No)	Wire Color	Terminal Description	Condition	Specified Condition
A8-8 (FDEF) - A8-6 (GND)	B - W-B	Front Deicer Signal	Engine switch on (IG) Front deicer switch ON	Below 1 V
A8-8 (FDEF) - A8-6 (GND)	B - W-B	Front Deicer Signal	Engine switch on (IG) Front deicer switch OFF	10 to 14 V
A8-19 (DFG) - A8-6 (GND)	G - W-B	Rear Defogger Signal	Engine switch on (IG) Rear defogger switch OFF	10 to 14 V
A8-19 (DFG) - A8-6 (GND)	G - W-B	Rear Defogger Signal	Engine switch on (IG) Rear defogger switch ON	Below 1 V
A8-6 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω