Toyota Tundra Service Manual: Terminals Of Ecu

TERMINALS OF ECU

1. SLIDING ROOF DRIVE GEAR (SLIDING ROOF ECU)

(a) Disconnect the W3 ECU connector.

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

Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specified Condition

W3-1 (UP) - Body ground

BR - Body ground

Sliding roof switch signal

TILT switch is pressed to up

Below 1 Ω

W3-1 (UP) - Body ground

BR - Body ground

Sliding roof switch signal

TILT switch is not pressed to up

10 kΩ or higher

W3-2 (DWN) - Body ground

W - Body ground

Sliding roof switch signal

TILT switch is pressed to down

Below 1 Ω

W3-2 (DWN) - Body ground

W - Body ground

Sliding roof switch signal

TILT switch is not pressed to down

10 kΩ or higher

W3-6 (OPN) - Body ground

BE - Body ground

Sliding roof switch signal

SLIDE switch is pressed to open

Below 1 Ω

W3-6 (OPN) - Body ground

BE - Body ground

Sliding roof switch signal

SLIDE switch is not pressed to open

10 kΩ or higher

W3-7 (CLS) - Body ground

V - Body ground

Sliding roof switch signal

SLIDE switch is pressed to close

Below 1 Ω

W3-7 (CLS) - Body ground

V - Body ground

Sliding roof switch signal

SLIDE switch is not pressed to close

10 kΩ or higher

W3-8 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

W3-9 (IG) - Body ground

SB - Body ground

IG power supply

Ignition switch ON

11 to 14 V

W3-9 (IG) - Body ground

SB - Body ground

IG power supply

Ignition switch off

Below 1 V

W3-10 (B) - 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 on the wire harness side.

    System Diagram

    Supplemental Restraint Systems

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