Toyota Venza manuals

Toyota Venza: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY

(a) Disconnect the T10 and T11 position control ECU and switch assembly connectors.


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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

T10-1 (GND) - Body ground

W - Body ground

Ground

Always

Below 1 Ω

T11-4 (DBCL) - T10-1 (GND)

L - W

Driver seat belt buckle switch signal

Driver seat belt fastened

Below 1 Ω

T11-4 (DBCL) - T10-1 (GND)

L - W

Driver seat belt buckle switch signal

Driver seat belt unfastened

10 kΩ or higher

T10-6 (+B) - T10-1 (GND)

L - W

Power source

Always

11 to 14 V

T11-12 (SYSB) - T10-1 (GND)

W - W

System power source

Always

11 to 14 V

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

(c) Reconnect the T10 and T11 position control ECU and switch assembly connectors.

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

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

T10-2 (SLD+) - T10-1 (GND)

Y - W

Sliding motor signal (forward)

Slide switch off

Below 1 V

Slide switch on (Forward)

11 to 14 V

T10-4 (SLD-) - T10-1 (GND)

G - W

Sliding motor signal (rearward)

Slide switch off

Below 1 V

Slide switch on (Rearward)

11 to 14 V

T10-7 (FRV+) - T10-1 (GND)

GR - W

Front vertical motor signal (upward)

Front vertical switch off

Below 1 V

Front vertical switch on (Upward)

11 to 14 V

T10-5 (FRV-) - T10-1 (GND)

LG - W

Front vertical motor signal (downward)

Front vertical switch off

Below 1 V

Front vertical switch on (Downward)

11 to 14 V

T10-8 (LFT+) - T10-1 (GND)

SB - W

Lifter motor signal (upward)

Lifter switch off

Below 1 V

Lifter switch on (Upward)

11 to 14 V

T10-11 (LFT-) - T10-1 (GND)

P - W

Lifter motor signal (downward)

Lifter switch off

Below 1 V

Lifter switch on (Downward)

11 to 14 V

T10-9 (RCL+) - T10-1 (GND)

L - W

Reclining motor signal (forward)

Reclining switch off

Below 1 V

Reclining switch on (Forward)

11 to 14 V

T10-12 (RCL-) - T10-1 (GND)

R - W

Reclining motor signal (rearward)

Reclining switch off

Below 1 V

Reclining switch on (Rearward)

11 to 14 V

If the result is not as specified, the position control ECU and switch assembly may have a malfunction.

2. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY LH

(a) Disconnect the I13 outer mirror control ECU assembly LH connector.


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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

I13-7 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

I13-14 (BDR) - I13-7 (GND)

V - W-B

Power source

Always

11 to 14 V

I13-5 (SIG) - I13-7 (GND)

L - W-B

Power source (IG)

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

I13-6 (CPUB) - I13-7 (GND)

LG - W-B

Power source

Always

11 to 14 V

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

(c) Reconnect the I13 outer mirror control ECU assembly LH connector.

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

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

I13-3 (M2) - I13-13 (MSWE)

V - Y

M2 switch signal for seat memory switch

M2 switch on

Below 1 V

M2 switch off

11 to 14 V

I13-2 (M1) - I13-13 (MSWE)

B - Y

M1 switch signal for seat memory switch

M1 switch on

Below 1 V

M1 switch off

11 to 14 V

I13-1 (MM) - I13-13 (MSWE)

GR - Y

SET switch signal for seat memory switch

SET switch on

Below 1 V

SET switch off

11 to 14 V

If the result is not as specified, the outer mirror control ECU assembly LH may have a malfunction.

3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the main body ECU (driver side junction block assembly) connectors.


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

HINT:

Measure values on the wire harness side with the connectors disconnected.

Tester Connection

Wiring Color

Terminal Description

Condition

Specified Condition

D50-24 (DCTY) - Body ground

V - Body ground

Driver side door courtesy light switch input

Driver side door closed (OFF) → open (ON)

10 kΩ or higher → Below 1 Ω

2A-1 (ACC) - Body ground

B - Body ground

Ignition power supply (ACC signal)

Ignition switch ACC → OFF

11 to 14 V → Below 1 V

2A-1 (IG) - Body ground

B - Body ground

Ignition power supply (IG signal)

Ignition switch ON → OFF

11 to 14 V → Below 1 V

2C-30 (ALTB) - Body ground

BR - Body ground

+B (power system alternator system) power supply

Always

11 to 14 V

2F-16 (GND1) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

2C-24 (BECU) - 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 in the wire harness.

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