Toyota Venza manuals

Toyota Venza: 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

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

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

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

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

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

(c) Waveform 3

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.

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 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

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

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

Ignition switch ON and shift lever in "-" (Down shift)

Below 1 V

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