Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AIR CONDITIONING AMPLIFIER (A/C ECU)

Fig 1: Identifying Air Conditioning Amplifier Connector Terminals (A/C ECU)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance according to the value(s) in the table below.

HINT:

Check from the rear of the connector while it is connected to the air conditioning amplifier.

CONDITIONING AMPLIFIER (A/C ECU) RESISTANCE AND VOLTAGE SPECIFICATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
J19-1 (IG+) - J19-14 (GND)	P - W-B	Ignition power supply	Ignition switch ON	11 to 14 V
J19-1 (IG+) - J19-14 (GND)	P - W-B	Ignition power supply	Ignition switch OFF	Below 1 V
J19-21 (B) - J19-14 (GND)	R - W-B	Battery power source	Always	11 to 14 V
J19-14 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, the ECU may have a malfunction.

CHECK INTEGRATION CONTROL AND PANEL

Disconnect the J37 integration control and panel connector.

Fig 2: Identifying J37 Integration Control And Panel Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance according to the value(s) in the table below.

INTEGRATION CONTROL AND PANEL RESISTANCE AND VOLTAGE SPECIFICATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
J37-16 (IG+) - J37-1 (GND)	P - W-B	Ignition power supply	Ignition switch ON	11 to 14 V
J37-16 (IG+) - J37-1 (GND)	P - W-B	Ignition power supply	Ignition switch OFF	Below 1 V
J37-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK)

Disconnect the DA and DD ECU connectors.

Fig 3: Identifying DA And DD ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance according to the value(s) in the table below.

MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) RESISTANCE AND VOLTAGE SPECIFICATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
DA-1 (ACC) - Body ground	B - Body ground	ACC power supply	Ignition switch OFF	Below 1 V
DA-1 (ACC) - Body ground	B - Body ground	ACC power supply	Ignition switch ACC	11 to 14 V
DA-1 (IG) - Body ground	B - Body ground	IG power supply	Ignition switch OFF	Below 1 V
DA-1 (IG) - Body ground	B - Body ground	IG power supply	Ignition switch ON	11 to 14 V
DD-62 (GND1)-Body ground	W-B - Body ground	Body ground	Always	Below 1 Ω
DD-62 (GND2) - Body ground	W-B - Body ground	Body ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)

Disconnect the W3 ECU connector.

Fig 4: Identifying W3 ECU Connector

Measure the voltage and resistance according to the value(s) in the table below.

SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) RESISTANCE AND VOLTAGE SPECIFICATION

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
W3-8 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
W3-9 (IG) - Body ground	SB - Body ground	IG power supply	Ignition switch ON	11 to 14 V
W3-9 (IG) - Body ground	SB - Body ground	IG power supply	Ignition switch OFF	Below 1 V
W3-10 (B) - Body ground	L - Body ground	+B power supply	Always	11 to 14 V

If the result is not as specified, there may be a malfunction on the wire harness side.