Toyota CH-R Service Manual: Rear Power Window LH does not Operate with Rear Power Window Switch LH

Toyota CH-R Service Manual / Window / Glass / Power Window Control System / Rear Power Window LH does not Operate with Rear Power Window Switch LH

DESCRIPTION

When the ignition switch is ON, the power window regulator motor assembly (for rear LH door) is operated by the rear power window regulator switch assembly (for LH door). The power window regulator motor assembly (for rear LH door) has motor, regulator, and ECU functions.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The power window control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly.

    Click here

  • If the power window regulator motor assembly (for rear LH door) has been replaced with a new one, initialize the power window control system.

    Click here

  • Check that the window lock switch is off before performing the following procedure.
  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.*1

    Click here

    • *1: w/ Smart Key System

PROCEDURE

1.

READ VALUE USING TECHSTREAM (MAIN BODY)

(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 / Main Body / Data List.

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

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Communication RL-Door Motor

Connection status between power window regulator motor assembly (for rear LH door) and main body ECU (multiplex network body ECU)

STOP or OK

STOP: Communication stopped

OK: Normal communication

-

Body Electrical > Main Body > Data List

Tester Display

Communication RL-Door Motor

OK:

OK is displayed for each Data List item above.

NG

GO TO LIN COMMUNICATION SYSTEM (Proceed to How to Proceed with Troubleshooting)

OK

2.

READ VALUE USING TECHSTREAM (RL-DOOR MOTOR)

(a) Enter the following menus: Body Electrical / RL-Door Motor / Data List.

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

Body Electrical > RL-Door Motor > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RL Door P/W Up SW

Rear LH door power window manual up switch signal

OFF or ON

OFF: Rear LH door power window manual up switch not being operated

ON: Rear LH door power window manual up switch being operated

-

RL Door P/W Down SW

Rear LH door power window manual down switch signal

OFF or ON

OFF: Rear LH door power window manual down switch not being operated

ON: Rear LH door power window manual down switch being operated

-

Body Electrical > RL-Door Motor > Data List

Tester Display

RL Door P/W Up SW

RL Door P/W Down SW

OK:

On the Techstream screen, ON or OFF is displayed accordingly.

NG

GO TO STEP 4

OK

3.

PERFORM ACTIVE TEST USING TECHSTREAM (RL-DOOR MOTOR)

(a) Enter the following menus: Body Electrical / RL-Door Motor / Active Test.

(b) Perform the Active Test according to the display on the Techstream.

CAUTION:

Be careful to avoid injuries as this test causes vehicle parts to move. During the Active Test, the jam protection function will not operate.

Body Electrical > RL-Door Motor > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Power Window

Power window

OFF / DOWN / UP

-

Body Electrical > RL-Door Motor > Active Test

Tester Display

Power Window

OK:

Rear LH door power window operates normally.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR REAR LH DOOR)

4.

INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR)

(a) Remove the rear power window regulator switch assembly (for LH door).

Click here

(b) Inspect the rear power window regulator switch assembly (for LH door).

Click here

NG

REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR)

OK

5.

CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH (FOR LH DOOR) - POWER WINDOW REGULATOR MOTOR (FOR REAR LH DOOR) AND BODY GROUND)

(a) Disconnect the L2 power window regulator motor assembly (for rear LH door) connector.

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

Standard Resistance

Tester Connection

Condition

Specified Condition

L3-5 (UP) - L2-10 (UP)

Always

Below 1 Ω

L3-5 (UP) or L2-10 (UP) - Body ground

Always

10 kΩ or higher

L3-4 (DOWN) - L2-7 (DOWN)

Always

Below 1 Ω

L3-4 (DOWN) or L2-7 (DOWN) - Body ground

Always

10 kΩ or higher

L3-7 (GND) - Body ground

Always

Below 1 Ω

OK

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR REAR LH DOOR)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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