LIGHTING (INT)  LIGHTING SYSTEM  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

E258634E04
1.427,0.833 1.74,1.031 0.313,0.198 10 false L2 1.417,1 4.594,1.427 3.177,0.427 10 false Rear Door Courtesy Light Switch Assembly LH 1.427,2.052 4.625,2.458 3.198,0.406 10 false Rear Door Courtesy Light Switch Assembly RH 1.438,1.885 1.75,2.083 0.313,0.198 10 false L37 3.073,0.521 3.385,0.719 0.313,0.198 10 false 1 3.073,1.479 3.385,1.677 0.313,0.198 10 false 1 5.677,0.51 5.99,0.708 0.313,0.198 10 false 24 5.74,1.469 6.052,1.667 0.313,0.198 10 false 6 5.927,0.615 6.479,0.823 0.552,0.208 10 false LCTY 5.938,1.573 6.49,1.781 0.552,0.208 10 false RCTY 5.354,1.99 7.052,2.458 1.698,0.469 10 false Main Body ECU (Multiplex Network Body ECU) 5.354,1.813 5.865,2.042 0.51,0.229 10 false E31

PROCEDURE

1.READ VALUE USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Main Body / Data List.


e.

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 SW Rear door courtesy light switch assembly RH signal ON or OFF ON: Rear door RH open
OFF: Rear door RH closed 		-
RL Door Courtesy SW Rear door courtesy light switch assembly LH signal ON or OFF ON: Rear door LH open
OFF: Rear door LH closed 		-
Body Electrical > Main Body > Data List
Tester Display
RR Door Courtesy SW
RL Door Courtesy SW
50003 123 24,25
OK:

Normal conditions listed above are displayed.



Result:
Result Proceed to
OK A
"RR Door Courtesy SW" is not normal B
"RL Door Courtesy SW" is not normal C



A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>LIGHTING (INT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE


B

2.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

C

4.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH
2.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH
a.

Remove the rear door courtesy light switch assembly RH.

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


b.

Inspect the rear door courtesy light switch assembly RH.

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


Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

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


3.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
a.

Disconnect the E31 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
L37-1 - E31-6 (RCTY) Always Below 1 Ω
L37-1 or E31-6 (RCTY) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH
a.

Remove the rear door courtesy light switch assembly LH.

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


b.

Inspect the rear door courtesy light switch assembly LH.

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


Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

NG

REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

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


5.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
a.

Disconnect the E31 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
L2-1 - E31-24 (LCTY) Always Below 1 Ω
L2-1 or E31-24 (LCTY) - Body ground Always 10 kΩ or higher



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

REPAIR OR REPLACE HARNESS OR CONNECTOR