Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / U660e Automatic Transmission / Transaxle / Automatic Transaxle System / Terminals Of Ecu

TERMINALS OF ECU

1. TCM

HINT:

Each TCM terminal standard voltage is shown in the table below.

In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition".

Use the illustration above as a reference for the TCM terminals.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
B40-15 (R) - B40-8 (E1)	G - B	R shift position switch signal	Ignition switch ON and shift lever in R	11 to 14 V
B40-15 (R) - B40-8 (E1)	G - B	R shift position switch signal	Ignition switch ON and shift lever in any position except R	Below 1 V
B40-16 (D) - B40-8 (E1)	LG - B	D shift position switch signal	Ignition switch ON and shift lever in D and S	11 to 14 V
B40-16 (D) - B40-8 (E1)	LG - B	D shift position switch signal	Ignition switch ON and shift lever in any position except D and S	Below 1 V
B40-12 (STP) - B40-8 (E1)	P - B	Stop light switch signal	Brake pedal is depressed	7.5 to 14 V
B40-12 (STP) - B40-8 (E1)	P - B	Stop light switch signal	Brake pedal is released	Below 1.5 V
B40-11 (NSW) - B40-8 (E1)	GR - B	Park/neutral switch signal	Ignition switch ON and shift lever in P or N	Below 2 V
B40-11 (NSW) - B40-8 (E1)	GR - B	Park/neutral switch signal	Ignition switch ON and shift lever in any position except P or N	11 to 14 V
B40-10 (STA) - B40-8 (E1)	V - B	Starter signal	Cranking (shift lever in P or N, engine switch START)	11 to 14 V
B40-10 (STA) - B40-8 (E1)	V - B	Starter signal	Ignition switch ON and shift lever in any position except P or N	Below 2 V
B40-3 (SPD) - B40-8 (E1)	L - B	Speed signal from combination meter	Vehicle speed 20 km/h (12 mph)	Pulse generation (see waveform 1)
B40-1 (BATT) - B40-8 (E1)	W-L - B	Battery (for measuring battery voltage and for TCM memory)	Always	9 to 14 V
B40-13 (IGSW) - B40-8 (E1)	Y - B	Ignition switch	Ignition switch ON	9 to 14 V
B40-18 (+B) - B40-8 (E1)	Y - B	Power source of TCM	Ignition switch ON	9 to 14 V
B40-6 (CAN+) - B40-8 (E1)	R - B	CAN communication line	Ignition switch ON	Pulse generation (see waveform 2)
B40-7 (CAN-) - B40-8 (E1)	W - B	CAN communication line	Ignition switch ON	Pulse generation (see waveform 3)

(a) Waveform 1

Reference

Terminal	SPD - E1
Tool setting	2 V/DIV., 20 ms./DIV.
Vehicle condition	Vehicle speed 20 km/h (12 mph)

(b) Waveform 2

Reference

Terminal	CAN+ - E1
Tool setting	1 V/DIV., 10 ms./DIV.
Vehicle condition	Engine is stopped, ignition switch ON

Reference

Terminal	CAN- - E1
Tool setting	1 V/DIV., 10 ms./DIV.
Vehicle condition	Engine is stopped, ignition switch ON

2. ECM

HINT:

Each ECM terminal standard voltage is shown in the table below.

Use the illustration below as a reference for the ECM terminals.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A41-25 (S) - B39-81 (E1)	BE - W	S shift position switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A41-25 (S) - B39-81 (E1)	BE - W	S shift position switch signal	Ignition switch ON and shift lever in any position except S	Below 1 V
A41-38 (SFTU) - B39-81 (E1)	R - W	Up shift switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A41-38 (SFTU) - B39-81 (E1)	R - W	Up shift switch signal	Ignition switch ON and shift lever in "+" (Up shift)	Below 1 V
A41-27 (SFTD) - B39-81 (E1)	LG - W	Down shift switch signal	Ignition switch ON and shift lever in S	11 to 14 V
A41-27 (SFTD) - B39-81 (E1)	LG - W	Down shift switch signal	Ignition switch ON and shift lever in "-" (Down shift)	Below 1 V

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