Toyota Tundra Service Manual: Position Initialization Incomplete (B2343)

Toyota Tundra Service Manual / Vehicle Interior / Sliding Roof / Sliding Roof System / Position Initialization Incomplete (B2343)

DESCRIPTION

This DTC is output when the sliding roof drive gear (sliding roof ECU) has not been initialized.

DTC Code

DTC Detection Condition

Trouble Area

B2343

Sliding roof drive gear (sliding roof ECU) has not been initialized

  • Sliding roof switch
  • Roof console box
  • Harness and connector
  • Sliding roof drive gear (sliding roof ECU)

WIRING DIAGRAM

PROCEDURE

1.

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

(a) Check that the sliding roof drive gear can be initialized (see page ).

OK:

Sliding roof drive gear can be initialized.

NG

GO TO STEP 3

OK

2.

CHECK FOR DTC

(a) Clear the DTCs (see page ).

(b) Check for DTCs (see page ).

Result

Result

Proceed to

No DTC is output

A

DTC B2343 is output

B

A

END

B

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

3.

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

(a) Disconnect the W3 ECU connector.

(b) Disconnect the W7 roof console box 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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

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

5.

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

OK

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY

NG

REPLACE ROOF CONSOLE BOX ASSEMBLY

    Switch Failure (B2342)

    Customize Parameters

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