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

Diagnosis System

DIAGNOSIS SYSTEM 1. DESCRIPTION (a) When troubleshooting On-Board Diagnostic (OBD II) vehicles, the vehicle must be connected to the OBD II scan tool (complying with SAE J1987). Various data outpu ...

Dtc Check / Clear

DTC CHECK / CLEAR NOTICE: When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are cleared. Before changing m ...

Other materials about Toyota Venza:

Starter Signal Circuit
DESCRIPTION 1. w/o Smart Key System While the engine is being cranked, current flows from terminal ST1 of the ignition switch assembly to the park/neutral position switch assembly and also flows to terminal STA of the ECM (STA Signal). 2. w/ Smart Key S ...

Body
General Maintenance GENERAL MAINTENANCE PROCEDURE 1. TIGHTEN BOLTS AND NUTS ON CHASSIS AND BODY (a) If necessary, tighten the bolts and nuts on the chassis parts listed below. Front axle and suspension Drivetrain Rear axle and suspension ...

Installation
INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. INSTALL FRONT AIRBAG SENSOR (a) Check that the ignition switch is off. (b) Check ...