Terminals Of Ecu [12/2012 - 08/2016]

WARNING: This page is about a different variant/trim than selected.

CHECK 4WD ECU ASSEMBLY

Fig 1: 4WD ECU Assembly Connector End View

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the voltage and resistance of the connector.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
G86-10 (4WDS) - G86-4 (GND)	R - W-B	AWD lock switch signal	Ignition switch ON AWD lock switch OFF → ON	11 to 14 V → Below 1 V
G86-6 (CANH) - G86-5 (CANL)	L - W	HIGH-level CAN bus wire - LOW-level CAN bus wire	Cable disconnected from negative (-) battery terminal	54 to 69 Ω
G86-4 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
G86-3 (IG1) - G86-4 (GND)	V - W-B	Power source voltage	Ignition switch ON	11 to 14 V
G86-2 (SLC+) - G86-1 (SLC-)	W - B	4WD linear solenoid signal	D position, Idling	Pulse generation (See waveform 1)

If the result is not as specified, the 4WD ECU assembly may have a malfunction.

Using an oscilloscope, check the waveform 1.

WAVEFORM 1 (REFERENCE)