Toyota Tundra Service Manual: Switch Failure (B2342)

DESCRIPTION

This DTC is output when the sliding roof drive gear (sliding roof ECU) detects that the SLIDE or TILT switch in the roof console box (sliding roof switch) is stuck for 30 seconds or more.

DTC Code

DTC Detection Condition

Trouble Area

B2342

Sliding roof drive gear (sliding roof ECU) detects that SLIDE or TILT switch in roof console box is stuck for 30 seconds or more

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

WIRING DIAGRAM

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs (see page ).

(b) Check for DTCs (see page ).

Result

Result

Proceed to

DTC B2342 is output

A

No DTC is output

B

B

USE SIMULATION METHOD TO CHECK

A

2.

READ VALUE USING TECHSTREAM (SWITCH STATUS)

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

Sliding Roof

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Down Switch Failure (Current)

Down switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt down signal failure (Current)

OFF: Sliding roof tilt down signal not fail (Current)

-

Up Switch Failure (Current)

Up switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt up signal failure (Current)

OFF: Sliding roof tilt up signal not fail (Current)

-

Close Switch Failure (Current)

Close switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt close signal failure (Current)

OFF: Sliding roof tilt close signal not fail (Current)

-

Open Switch Failure (Current)

Open switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt open signal failure (Current)

OFF: Sliding roof tilt open signal not fail (Current)

-

Down Switch Failure (Past)

Down switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt down signal failure (Past)

OFF: Sliding roof tilt down signal not fail (Past)

-

Up Switch Failure (Past)

Up switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt up signal failure (Past)

OFF: Sliding roof tilt up signal not fail (Past)

-

Close Switch Failure (Past)

Close switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt close signal failure (Current)

OFF: Sliding roof tilt close signal not fail (Current)

-

Open Switch Failure (Past)

Open switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt open signal failure (Current)

OFF: Sliding roof tilt open signal not fail (Current)

-

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 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

OK

REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Sensor (Motor) Failure (B2341,B2344)

    Position Initialization Incomplete (B2343)

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