Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Rear Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the rear door courtesy light switch assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*1

for HEV Model: Click here

for Gasoline Model: Click here

  • *1: w/ Smart Key System

PROCEDURE

1.

READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

RR Door Courtesy Switch Status

Rear door courtesy light switch assembly (RH) signal

CLOSE or OPEN

CLOSE: Rear door RH closed

OPEN: Rear door RH open

-

RL Door Courtesy Switch Status

Rear door courtesy light switch assembly (LH) signal

CLOSE or OPEN

CLOSE: Rear door LH closed

OPEN: Rear door LH open

-

Body Electrical > Main Body > Data List

Tester Display

RR Door Courtesy Switch Status

RL Door Courtesy Switch Status

OK:

Normal conditions listed above are displayed.

Result

Proceed to

OK

A

NG ("RL Door Courtesy Switch Status" is not normal)

B

NG ("RR Door Courtesy Switch Status" is not normal)

C

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

C

GO TO STEP 5

B

2.

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)

Click here

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

OK

3.

CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH) - POWER DISTRIBUTION BOX ASSEMBLY)

(a) Disconnect the 8F power distribution box assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

O31-1 - 8F-28

Always

Below 1 Ω

O31-1 - Body ground

Always

10 kΩ or higher

8F-28 - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT POWER DISTRIBUTION BOX ASSEMBLY

*a

Component without harness connected

(Power Distribution Box Assembly)

-

-

(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

8F-28 - MB-6 (LCTY)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

5.

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)

Click here

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)

OK

6.

CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - POWER DISTRIBUTION BOX ASSEMBLY)

(a) Disconnect the 8F power distribution box assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

O34-1 - 8F-1

Always

Below 1 Ω

O34-1 - Body ground

Always

10 kΩ or higher

8F-1 - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

INSPECT POWER DISTRIBUTION BOX ASSEMBLY

*a

Component without harness connected

(Power Distribution Box Assembly)

-

-

(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

8F-1 - MB-1 (RCTY)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

    READ NEXT:

     Back Door Courtesy Switch Circuit

    DESCRIPTION The main body ECU (multiplex network body ECU) receives a back door open/closed signal from the back door courtesy light switch (back door lock assembly). WIRING DIAGRAM CAUTION / NOTIC

     Interior Light Circuit

    DESCRIPTION The main body ECU (multiplex network body ECU) controls the operation of the following lights: Map Light Assembly Room Light Assembly WIRING DIAGRAM CAUTION / NOTICE / HINT

     Interior Light Auto Cut Circuit

    DESCRIPTION The main body ECU (multiplex network body ECU) controls operation of the DOME CUT relay in order to supply power to the interior lights. When the battery saving function operates while the

    SEE MORE:

     Inspection

    INSPECTION PROCEDURE 1. INSPECT FRONT NO. 2 SPEAKER ASSEMBLY LH (w/o Stereo Component Amplifier) (a) With the front No. 2 speaker assembly LH installed, check that there is no looseness or other abnormalities. (b) Check that there is no foreign matter in the front No. 2 speaker assembly LH,

     Second Row Right Side Airbag Deployment Control Circuit Resistance Below Threshold (B00381A)

    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode B00381A Second Row Right Side Airbag Deployment Control Circuit Resistance Below Threshold One of the following conditions is met: The airbag

    © 2020-2024 Copyright www.tcorollacross.com