RM3660EC _58 Vehicle Interior _080785 LIGHTING (INT) _0600097 LIGHTING SYSTEM(except NR Series Engine) J

LIGHTING (INT)  LIGHTING SYSTEM(except NR Series Engine)  Front Door Courtesy Switch Circuit  


DESCRIPTION

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

WIRING DIAGRAM

E500335E07
1,2.135 1.313,2.333 0.313,0.198 10 false O32 1,0.969 1.313,1.167 0.313,0.198 10 false O30 2.885,0.583 3.042,0.781 0.156,0.198 10 false 1 2.885,1.708 3.042,1.906 0.156,0.198 10 false 1 5.833,0.594 6.146,0.792 0.313,0.198 10 false 2 5.833,1.698 5.99,1.896 0.156,0.198 10 false 4 6.063,0.688 6.677,0.885 0.615,0.198 10 false FLCY 6.052,1.833 6.667,2.031 0.615,0.198 10 false FRCY 5.417,2.917 5.875,3.115 0.458,0.198 10 false MB 1.01,1.135 4.833,1.333 3.823,0.198 10 false Front Door Courtesy Light Switch Assembly LH 1,2.333 4.823,2.531 3.823,0.198 10 false Front Door Courtesy Light Switch Assembly RH 5.417,3.083 7.063,3.708 1.646,0.625 10 false Main Body ECU (Multiplex Network Body ECU) 4.167,0.698 4.552,0.938 0.385,0.24 10 false 10G 4.208,0.479 4.521,0.677 0.313,0.198 10 false 23 4.167,1.823 4.521,2.031 0.354,0.208 10 false 10G 4.208,1.625 4.521,1.823 0.313,0.198 10 false 22 4.51,2.208 5.938,2.625 1.427,0.417 10 false Power Distribution Box Assembly

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.


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
FR Door Courtesy Switch Status Front door courtesy light switch assembly RH signal Close or Open Close: Front door RH closed
Open: Front door RH open 		-
FL Door Courtesy Switch Status Front door courtesy light switch assembly LH signal Close or Open Close: Front door LH closed
Open: Front door LH open 		-
Body Electrical > Main Body > Data List
Tester Display
FR Door Courtesy Switch Status
FL Door Courtesy Switch Status
50003 449 30,31
OK:

Normal conditions listed above are displayed.



Result:
Result Proceed to
OK A
NG ("FL Door Courtesy Switch Status" is not normal) B
NG ("FR Door Courtesy Switch Status" is not normal) C



A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM (except NR Series Engine)>PROBLEM SYMPTOMS TABLE


B

2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

C

5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH
2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH
a.

Inspect the front door courtesy light switch assembly LH.

Click hereVehicle Interior>LIGHTING (INT)>FRONT DOOR COURTESY SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

Click hereVehicle Interior>LIGHTING (INT)>FRONT DOOR COURTESY SWITCH>REMOVAL


3.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 10G 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
O30-1 - 10G-23 Always Below 1 Ω
O30-1 or 10G-23 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
a.

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
10G-23 - MB-2 (FLCY) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH
a.

Inspect the front door courtesy light switch assembly RH.

Click hereVehicle Interior>LIGHTING (INT)>FRONT DOOR COURTESY SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

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

NG

REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

Click hereVehicle Interior>LIGHTING (INT)>FRONT DOOR COURTESY SWITCH>REMOVAL


6.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 10G 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
O32-1 - 10G-22 Always Below 1 Ω
O32-1 or 10G-22 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.INSPECT POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT POWER DISTRIBUTION BOX ASSEMBLY
a.

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
10G-22 - MB-4 (FRCY) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL