RM3660EC _58 Vehicle Interior _080785 LIGHTING (INT) _0600096 LIGHTING SYSTEM(for NR Series Engine) J

LIGHTING (INT)  LIGHTING SYSTEM(for NR Series Engine)  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

E369877E12
2.917,0.594 3.073,0.792 0.156,0.198 10 false 1 2.917,1.708 3.073,1.906 0.156,0.198 10 false 1 5.781,0.583 6.073,0.792 0.292,0.208 10 false 13 4.198,0.49 4.51,0.688 0.313,0.198 10 false 24 4.208,1.625 4.521,1.823 0.313,0.198 10 false 31 4.198,0.698 4.51,0.896 0.313,0.198 10 false 4A 4.188,1.823 4.5,2.021 0.313,0.198 10 false 4E 5.844,1.698 6.031,1.875 0.188,0.177 10 false 2 5.354,2.896 5.667,3.094 0.313,0.198 10 false MB 6.063,0.583 6.677,0.781 0.615,0.198 10 false LCTY 6.063,1.698 6.677,1.896 0.615,0.198 10 false RCTY 6.563,1.427 6.875,1.625 0.313,0.198 10 false +B 6.563,0.313 6.875,0.51 0.313,0.198 10 false +B 0.969,2.01 1.281,2.208 0.313,0.198 10 false O34 1.021,1.021 4.542,1.219 3.521,0.198 10 false Rear Door Courtesy Light Switch Assembly LH 1.01,0.865 1.323,1.063 0.313,0.198 10 false O31 4.323,2.198 5.948,2.646 1.625,0.448 10 false Driver Side Junction Block Assembly 5.354,3.063 7,3.625 1.646,0.563 10 false Main Body ECU (Multiplex Network Body ECU) 0.969,2.167 4.49,2.365 3.521,0.198 10 false Rear Door Courtesy Light Switch Assembly RH

CAUTION / NOTICE / HINT

NOTICE:

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

*: w/ Smart Entry and Start System



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 OFF or ON OFF: Rear door RH closed
ON: Rear door RH open 		-
RL Door Courtesy SW Rear door courtesy light switch assembly LH signal OFF or ON OFF: Rear door LH closed
ON: Rear door LH open 		-
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
NG ("RL Door Courtesy SW" is not normal) B
NG ("RR 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 (for NR Series Engine)>PROBLEM SYMPTOMS TABLE


B

2.INSPECT REAR DOOR COURTESY LAMP SWITCH ASSEMBLY

C

5.INSPECT REAR DOOR COURTESY LAMP SWITCH ASSEMBLY
2.INSPECT REAR DOOR COURTESY LAMP SWITCH ASSEMBLY
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

3.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

NG

REPLACE REAR DOOR COURTESY LAMP SWITCH ASSEMBLY

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


3.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
a.

Disconnect the 4A driver side junction block assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O31-1 - 4A-24 Always Below 1 Ω
O31-1 or 4A-24 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY
E173023C53
1.208,0.271 1.583,0.5 0.375,0.229 4.635,0.271 5.01,0.5 0.375,0.229 4.427,1.031 4.292,1.448 false 0.26,0.104 0.5,0.302 0.24,0.198 10 false *a 4.094,1.469 4.531,1.646 0.438,0.177 10 false LCTY 1.313,0.313 1.646,0.479 0.333,0.167 10 false 4A 4.74,0.313 5.073,0.479 0.333,0.167 10 false MB
*a Component without harness connected
(Driver Side Junction Block Assembly) 		- -


a.

Remove the main body ECU (multiplex network body ECU) from the driver side junction block 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
4A-24 - MB-13 (LCTY) 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 DRIVER SIDE JUNCTION BLOCK ASSEMBLY

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


5.INSPECT REAR DOOR COURTESY LAMP SWITCH ASSEMBLY
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

6.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

NG

REPLACE REAR DOOR COURTESY LAMP SWITCH ASSEMBLY

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


6.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
a.

Disconnect the 4E driver side junction block assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O34-1 - 4E-31 Always Below 1 Ω
O34-1 or 4E-31 - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

7.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY
E365380C16
1.24,0.198 1.563,0.438 0.323,0.24 4.792,0.375 5.115,0.615 0.323,0.24 3.375,1.354 3.396,1.073 false 0.198,0.146 0.51,0.344 0.313,0.198 10 false *a 1.313,0.24 1.698,0.479 0.385,0.24 10 false 4E 4.844,0.417 5.24,0.646 0.396,0.229 10 false MB 3.219,1.385 3.729,1.625 0.51,0.24 10 false RCTY
*a Component without harness connected
(Driver Side Junction Block Assembly) 		- -


a.

Remove the main body ECU (multiplex network body ECU) from the driver side junction block 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
4E-31 - MB-2 (RCTY) 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 DRIVER SIDE JUNCTION BLOCK ASSEMBLY

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