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Toyota Tacoma (2015-2018) Service Manual: Sliding Roof does not Move by Operating Sliding Roof Control Switch

Toyota Tacoma (2015-2018) Service Manual / Sliding Roof / Sliding Roof System / Sliding Roof does not Move by Operating Sliding Roof Control Switch

DESCRIPTION

The sliding roof ECU (sliding roof drive gear sub-assembly) receives slide and tilt signals when the sliding roof switch is operated and drives its built-in motor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.
  • When the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear sub-assembly) must be initialized (See page The sliding roof system uses the LIN communication system. First, confirm ).
  • The sliding roof system uses the LIN communication system. First, confirm that there are no malfunctions in the LIN communication system. Refer to the How to Proceed with Troubleshooting procedure (See page When a sliding roof ECU (sliding roof drive gear sub-assembly) DTC is ).
  • When a sliding roof ECU (sliding roof drive gear sub-assembly) DTC is output, first perform troubleshooting for the sliding roof ECU (sliding roof drive gear sub-assembly) DTC.

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(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

OPEN switch signal/ON or OFF

ON: OPEN switch pressed

OFF: OPEN switch not pressed

-

Close Switch

CLOSE switch signal/ON or OFF

ON: CLOSE switch pressed

OFF: CLOSE switch not pressed

-

Up Switch

UP switch signal/ON or OFF

ON: UP switch pressed

OFF: UP switch not pressed

-

Down Switch

DOWN switch signal/ON or OFF

ON: DOWN switch pressed

OFF: DOWN switch not pressed

-

OK:

The Techstream display changes according to switch operation as shown in the table.

NG

GO TO STEP 3

OK

2.

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

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

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

S50-8 (B) - Body ground

Always

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S50-12 (E) - Body ground

Always

Below 1 Ω

OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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))

NG

REPLACE SLIDING ROOF SWITCH (ROOF CONSOLE BOX ASSEMBLY)

OK

4.

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

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

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

S50-5 (CLS) - R44-18 (CLS)

Always

Below 1 Ω

S50-5 (CLS) - Body ground

Always

10 kΩ or higher

S50-7 (OPN) - R44-19 (OPN)

Always

Below 1 Ω

S50-7 (OPN) - Body ground

Always

10 kΩ or higher

S50-6 (DWN) - R44-20 (DOWN)

Always

Below 1 Ω

S50-6 (DWN) - Body ground

Always

10 kΩ or higher

S50-4 (UP) - R44-17 (UP)

Always

Below 1 Ω

S50-4 (UP) - Body ground

Always

10 kΩ or higher

R44-12 (GND) - Body ground

Always

Below 1 Ω

S50-12 (E) - Body ground

Always

Below 1 Ω

OK

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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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