Toyota Tundra Service Manual: Sliding Roof Control Switch Circuit

DESCRIPTION

If either the sliding function or tilt function does not operate, there may be a malfunction in the sliding roof switch circuit.

WIRING DIAGRAM

PROCEDURE

1.

PERFORM ACTIVE TEST USING TECHSTREAM (SLIDING ROOF OPERATION)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that the sliding roof operates (see page ).

Sliding Roof

Tester Display

Test Part

Control Range

Diagnostic Note

Slide Roof

Operate sliding roof SLIDE CLOSE/TILT UP or SLIDE OPEN/TILT DOWN

Clos/Up: Sliding roof SLIDE CLOSE or TILT UP operation occurs

Opn/Dwn: Sliding roof SLIDE OPEN or TILT DOWN operation occurs

OFF: Sliding roof is not operating

-

OK:

Sliding roof operates normally.

NG

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)

OK

2.

READ VALUE USING TECHSTREAM (SLIDING ROOF SWITCH)

(a) Use the Data List to check if the sliding roof switch is functioning properly (see page ).

Sliding Roof

Tester Display

Test Part

Control Range

Diagnostic Note

Open Switch

Sliding roof open switch signal/ON or OFF

ON: SLIDE switch is pressed to open

OFF: SLIDE switch is not pressed to open

-

Close Switch

Sliding roof close switch signal/ON or OFF

ON: SLIDE switch is pressed to close

OFF: SLIDE switch is not pressed to close

-

Up Switch

Sliding roof up switch signal/ON or OFF

ON: TILT switch is pressed to up

OFF: TILT switch is not pressed to up

-

Down Switch

Sliding roof down switch signal/ON or OFF

ON: TILT switch is pressed to down

OFF: TILT switch is not pressed to down

-

OK:

The Techstream displays as shown in the table according to the operation of each switch.

OK

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)

NG

3.

INSPECT SLIDING ROOF SWITCH

(a) Remove the sliding roof switch (see page ).

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

Standard resistance:

Tester Connection

Switch Condition

Specified Condition

1 (UP) - 5 (E)

TILT switch is pressed to up

Below 1 Ω

1 (UP) - 5 (E)

TILT switch is not pressed to up

10 kΩ or higher

2 (DWN) - 5 (E)

TILT switch is pressed to down

Below 1 Ω

2 (DWN) - 5 (E)

TILT switch is not pressed to down

10 kΩ or higher

4 (OPN) - 5 (E)

SLIDE switch is pressed to open

Below 1 Ω

4 (OPN) - 5 (E)

SLIDE switch is not pressed to open

10 kΩ or higher

3 (CLS) - 5 (E)

SLIDE switch is pressed to close

Below 1 Ω

3 (CLS) - 5 (E)

SLIDE switch is not pressed to close

10 kΩ or higher

NG

REPLACE SLIDING ROOF SWITCH

OK

4.

INSPECT ROOF CONSOLE BOX ASSEMBLY

(a) Remove the roof console box with sliding roof switch (see page ).

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

Standard resistance:

Tester Connection

Switch Condition

Specified Condition

6 (UP) - 7 (E)

TILT switch is pressed to up

Below 1 Ω

6 (UP) - 7 (E)

TILT switch is not pressed to up

10 kΩ or higher

5 (DOWN) - 7 (E)

TILT switch is pressed to down

Below 1 Ω

5 (DOWN) - 7 (E)

TILT switch is not pressed to down

10 kΩ or higher

4 (OPN) - 7 (E)

SLIDE switch is pressed to open

Below 1 Ω

4 (OPN) - 7 (E)

SLIDE switch is not pressed to open

10 kΩ or higher

3 (CLS) - 7 (E)

SLIDE switch is pressed to close

Below 1 Ω

3 (CLS) - 7 (E)

SLIDE switch is not pressed to close

10 kΩ or higher

NG

REPLACE ROOF CONSOLE BOX ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - ROOF CONSOLE BOX)

(a) Disconnect the W3 ECU connector.

(b) Disconnect the W7 switch connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:

Tester Connection

Condition

Specified Condition

W3-1 (UP) - W7-6 (UP)

Always

Below 1 Ω

W3-2 (DWN) - W7-5 (DOWN)

Always

Below 1 Ω

W3-6 (OPN) - W7-4 (OPN)

Always

Below 1 Ω

W3-7 (CLS) - W7-3 (CLS)

Always

Below 1 Ω

W7-6 (UP) - Body ground

Always

10 kΩ or higher

W7-5 (DOWN) - Body ground

Always

10 kΩ or higher

W7-3 (CLS) - Body ground

Always

10 kΩ or higher

W7-4 (OPN) - Body ground

Always

10 kΩ or higher

W7-7 (E) - Body ground

Always

Below 1 Ω

OK

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Problem Symptoms Table

    Sliding Roof ECU Power Source Circuit

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