Toyota Tundra. Manual — part 898

DTC B2341 SENSOR (MOTOR) FAILURE; DTC B2344 POSITION FAILURE

DESCRIPTION

When the sliding roof drive gear (sliding roof ECU) detects malfunctions in the motor, and the sliding roof
operation is stopped, DTC B2341 is output.

When the sliding roof drive gear (sliding roof ECU) detects malfunctions in the gear, and the sliding roof
operation is stopped, DTC B2344 is output.

DTC B2341 SENSOR AND DTC B2344 POSITION FAILURE DETECTION CONDITION CHART

INSPECTION PROCEDURE

1. CHECK FOR DTC

a. Clear the DTCs (see DTC CHECK/CLEAR ).

b. Check for DTCs (see DTC CHECK/CLEAR ).

Result

DTC B2341 SENSOR AND DTC B2344 POSITION FAILURE RESULT CHART

B: GO TO B2343

C: USE SIMULATION METHOD TO CHECK (See ELECTRONIC CIRCUIT INSPECTION
PROCEDURE )

A: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) (see
DISASSEMBLY )

DTC B2342 SWITCH FAILURE

DESCRIPTION



Sliding roof drive gear
(Sliding roof ECU)

B2344

Position Failure



Sliding roof drive gear
(Sliding roof ECU)

DTC Code

DTC Detection Condition

Trouble Area

B2341

Sensor (Motor) Failure

Sliding roof drive gear (sliding roof ECU)

B2344

Position Failure

Sliding roof drive gear (sliding roof ECU)

Result

Proceed to

DTC B2341 or B2344 is output

A

DTC B2343 is output

B

No DTC is output

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Sliding Roof - Tundra

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 B2342 SWITCH FAILURE DETECTION CONDITION CHART

WIRING DIAGRAM

Fig. 6: Sliding Roof Switch - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK FOR DTC

a. Clear the DTCs (see DTC CHECK/CLEAR ).

b. Check for DTCs (see DTC CHECK/CLEAR ).

Result

B2342 SWITCH FAILURE RESULT CHART

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)

Result

Proceed to

DTC B2342 is output

A

No DTC is output

B

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Sliding Roof - Tundra

B: USE SIMULATION METHOD TO CHECK (See ELECTRONIC CIRCUIT INSPECTION
PROCEDURE )

A: Go to Next Step

2. READ VALUE USING TECHSTREAM (SWITCH STATUS)

a. Use the Data List to check if the sliding roof switch is functioning properly (see DATA LIST /

ACTIVE TEST ).

Sliding Roof

SLIDING ROOF VALUE USING TECHSTREAM (SWITCH STATUS) - ACTIVE TEST
LIST

Tester Display

Measurement Item/Range

Normal Condition

Down Switch Failure (Current)

Down switch failure signal
(Current)/Fail or Not Fail

Fail: Sliding roof tilt down
signal failure (Current)
Not Fail: Sliding roof tilt down
signal not fail (Current)

Up Switch Failure (Current)

Up switch failure signal
(Current)/ Fail or Not Fail

Fail: Sliding roof tilt up signal
failure (Current)
Not Fail: Sliding roof tilt up
signal not fail (Current)

Close Switch Failure (Current)

Close switch failure signal
(Current)/Fail or Not Fail

Fail: Sliding roof tilt close
signal failure (Current)
Not Fail: Sliding roof tilt close
signal not fail (Current)

Open Switch Failure (Current)

Open switch failure signal
(Current)/Fail or Not Fail

Fail: Sliding roof tilt open
signal failure (Current)
Not Fail: Sliding roof tilt open
signal not fail (Current)

Down Switch Failure (Past)

Down switch failure signal
(Past)/ Fail or Not Fail

Fail: Sliding roof tilt down
signal failure (Past)
Not Fail: Sliding roof tilt down
signal not fail (Past)

Up Switch Failure (Past)

Up switch failure signal (Past)/
Fail or Not Fail

Fail: Sliding roof tilt up signal
failure (Past)
Not Fail: Sliding roof tilt up
signal not fail (Past)

Close Switch Failure (Past)

Close switch failure signal
(Past)/ Fail or Not Fail

Fail: Sliding roof tilt close
signal failure (Current)
Not Fail: Sliding roof tilt close
signal not fail (Current)

Open Switch Failure (Past)

Open switch failure signal (Past)/
Fail or Not Fail

Fail: Sliding roof tilt open
signal failure (Current)
Not Fail: Sliding roof tilt open
signal not fail (Current)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Sliding Roof - Tundra

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

NG: Go to step 3

OK: REPLACE SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) (see
DISASSEMBLY )

3. INSPECT SLIDING ROOF SWITCH

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

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

Standard resistance

SLIDING ROOF SWITCH RESISTANCE SPECIFICATION

Fig. 7: Identifying Sliding Roof Switch Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE SLIDING ROOF SWITCH (see REMOVAL )

Tester Connection

Condition

Specified Condition

1 (UP) - 5 (E)

TILT switch is pressed to up

Below 1 ohms

1(UP) - 5(E)

TILT switch is not pressed to up

10 kohms or higher

2 (DWN) - 5 (E) TILT switch is pressed to down

Below 1 ohms

2 (DWN) - 5 (E) TILT switch is not pressed to down

10 kohms or higher

4 (OPN) - 5 (E)

SLIDE switch is pressed to open

Below 1 ohms

4 (OPN) - 5 (E)

SLIDE switch is not pressed to open 10 kohms or higher

3 (CLS) - 5 (E)

SLIDE switch is pressed to close

Below 1 ohms

3 (CLS) - 5 (E)

SLIDE switch is not pressed to close 10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Sliding Roof - Tundra