Terminals Of Ecu

WARNING: This page is about a different car, the 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

DRIVER DOOR ECU

Fig 1: Identifying Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the driver door ECU connector.

Standard:

STD VOLTAGE

Symbols (Terminal No.)	Wiring Color	Condition	STD Voltage
D19-1 <=> Body ground (GND o Body ground)	W-B <=> Body ground	Constant	Continuity
D19-4 <=> D 19-1 (CPUB <=> GND)	L-0 <=> W-B	Constant	10 - 14 V
D19-5 <=> D19-1 (SIG <=> GND)	V-W <=> W-B	Ignition switch OFF --> ON	10 - 14 V
D17-27 <=> D 16-1 (CTY <=> GND)	R-W <=> W-B	Constant	10 - 14 V

THEFT WARNING ECU

Fig 2: Identifying Theft Warning ECU Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the theft warning ECU connector.

Standard:

CONDITION

Symbols (Terminal No.)	Wiring Color	Condition	Standard
T7-20 <=> Body ground (GND <=> Body ground)	W-B <=> Body ground	Constant	Continuity
T7-21 <=> T7-20 (+B2 <=> GND)	B-0 <=> W-B	Constant	10 - 14 V
T7-24 <=> T7-20 (IG <=> GND)	V-W <=> W-B	Ignition switch OFF --> ON	0 V --> 10 - 14 V
T7-1 <=> T7-20 (+B <=> GND)	L-0 <=> W-B	Constant	10-14 V

TRANSPONDER KEY ECU

Fig 3: Identifying Transponder Key ECU Terminals

Disconnect the theft transponder key ECU connector.

Standard:

CONDITION

Symbols (Terminal No.)	Wiring Color	Condition	Standard
T13-14 <=> Body ground (GND <=> Body ground)	W-B <=> Body ground	Constant	Continuity
T13-1 <=> T13-14 (CPUB <=> GND)	L-O <=> W-B	Constant	10 - 14 V
T13-2 <=> T13-14 (IG2 <=> GND)	G-B <=> W-B	Ignition switch OFF --> ON	0 V --> 10 - 14 V
T13-3 <=> T13-14 (KSW <=> GND)	LG-B <=> W-B	No key in the ignition key cylinder --> With key	No continuity --> Continuity