Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Switch Failure (B2342)

DESCRIPTION

This DTC is stored when the sliding roof ECU (sliding roof drive gear sub-assembly) detects that the sliding roof switch is stuck for 30 seconds or more.

DTC No.

DTC Detection Condition

Trouble Area

B2342

Sliding roof ECU (sliding roof drive gear sub-assembly) detects sliding roof switch is stuck for 30 seconds or more.

  • Sliding roof ECU (Sliding roof drive gear sub-assembly)
  • Sliding roof switch (Roof console box assembly)
  • Wire harness or connector

WIRING DIAGRAM

Refer to DTC B2341 (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

NOTICE:

When the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, it requires initialization (See page PROCEDURE ).

PROCEDURE

1.

READ VALUE USING TECHSTREAM (SLIDING ROOF SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Sliding Roof / Data List.

(e) Read the Data List according to the display on the Techstream.

Sliding Roof

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Open Switch Failure(Past)

Open switch failure signal (Past)/ON or OFF

ON: Sliding roof open switch failure signal (Past)

OFF: No sliding roof open switch failure signal (Past)

-

Close Switch Failure(Past)

Close switch failure signal (Past)/ON or OFF

ON: Sliding roof close switch failure signal (Past)

OFF: No sliding roof close switch failure signal (Past)

-

Up Switch Failure(Past)

Up switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt up switch failure signal (Past)

OFF: No sliding roof tilt up switch failure signal (Past)

-

Down Switch Failure(Past)

Down switch failure signal (Past)/ON or OFF

ON: Sliding roof tilt down switch failure signal (Past)

OFF: No sliding roof tilt down switch failure signal (Past)

-

Open Switch Failure(Current)

Open switch failure signal (Current)/ON or OFF

ON: Sliding roof open switch failure signal (Current)

OFF: No sliding roof open switch failure signal (Current)

-

Close Switch Failure(Current)

Close switch failure signal (Current)/ON or OFF

ON: Sliding roof close switch failure signal (Current)

OFF: No sliding roof close switch failure signal (Current)

-

Up Switch Failure(Current)

Up switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt up switch failure signal (Current)

OFF: No sliding roof tilt up switch failure signal (Current)

-

Down Switch Failure(Current)

Down switch failure signal (Current)/ON or OFF

ON: Sliding roof tilt down switch failure signal (Current)

OFF: No sliding roof tilt down switch failure signal (Current)

-

OK:

"OFF" appears on the Techstream screen.

OK

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

NG

2.

CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - BODY GROUND)

(a) Disconnect the S50 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

(b) Disconnect the R44 sliding roof switch (roof console box assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S50-7 (OPN) - Body ground

Always

10 kΩ or higher

S50-6 (DWN) - Body ground

Always

10 kΩ or higher

S50-5 (CLS) - Body ground

Always

10 kΩ or higher

S50-4 (UP) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

(a) Remove the sliding roof switch (roof console box assembly) (See page ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

17 (UP) - 12 (GND)

UP switch is pressed

Below 1 Ω

17 (UP) - 12 (GND)

UP switch is not pressed

10 kΩ or higher

20 (DOWN) - 12 (GND)

DOWN switch is pressed

Below 1 Ω

20 (DOWN) - 12 (GND)

DOWN switch is not pressed

10 kΩ or higher

19 (OPN) - 12 (GND)

OPEN switch is pressed

Below 1 Ω

19 (OPN) - 12 (GND)

OPEN switch is not pressed

10 kΩ or higher

18 (CLS) - 12 (GND)

CLOSE switch is pressed

Below 1 Ω

18 (CLS) - 12 (GND)

CLOSE switch is not pressed

10 kΩ or higher

Text in Illustration

*a

Component without harness connected

(Sliding Roof Switch (Roof Console Box Assembly))

OK

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

NG

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

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