RM36D0EC _58 Vehicle Interior _083095 LIGHTING (INT) _0400584 LIGHTING SYSTEM J

LIGHTING (INT)  LIGHTING SYSTEM  Back Door Courtesy Switch Circuit  


DESCRIPTION

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

WIRING DIAGRAM

w/ Power Back Door System:
E442536E12
5.667,2.052 6.281,2.25 0.615,0.198 10 false BCTY 6.073,1.5 6.385,1.698 0.313,0.198 10 false +B 5.375,2.813 7.021,3.188 1.646,0.375 10 false Main Body ECU (Multiplex Network Body ECU) 5.417,2.646 5.573,2.844 0.156,0.198 10 false A 4.073,2.802 5.229,3.188 1.156,0.385 10 false Power Distribution Box Assembly 4.094,2.635 4.885,2.854 0.792,0.219 10 false 6F 1.146,2.656 1.604,2.854 0.458,0.198 10 false R14 1.156,2.813 3.073,3.219 1.917,0.406 10 false Back Door Lock with Courtesy Light Switch Assembly 1.219,2.063 3.75,2.542 2.531,0.479 10 false Back Door Courtesy Light Switch 3.104,1.802 3.563,2 0.458,0.198 10 false CTY 1.177,1.802 1.333,2 0.156,0.198 10 false E 4.198,1.792 4.51,1.99 0.313,0.198 10 false 2 3.531,1.802 3.688,2 0.156,0.198 10 false 4 5.375,1.771 5.688,1.99 0.313,0.219 10 false 19 0.927,1.802 1.083,2 0.156,0.198 10 false 1 2.354,0.552 2.813,0.75 0.458,0.198 10 false FUL 1.385,0.99 1.844,1.188 0.458,0.198 10 false R28 1.385,1.146 3.375,1.5 1.99,0.354 10 false Multiplex Network Door ECU 2.781,0.406 3.094,0.604 0.313,0.198 10 false 3

w/o Power Back Door System:
E442537E11
5.677,1.781 6.292,1.979 0.615,0.198 10 false BCTY 5.427,2.375 6.042,2.573 0.615,0.198 10 false A 5.417,2.573 7.104,3.198 1.688,0.625 10 false Main Body ECU (Multiplex Network Body ECU) 4.135,2.542 5.26,2.958 1.125,0.417 10 false Power Distribution Box Assembly 4.115,2.385 5.375,2.906 1.26,0.521 10 false 6F 4.167,1.5 5.156,2.021 0.99,0.521 10 false 2 5.385,1.49 6.375,2.01 0.99,0.521 10 false 19 3.531,1.521 4.521,2.042 0.99,0.521 10 false 3 0.875,1.51 1.865,2.031 0.99,0.521 10 false 2 1.177,2.344 3.594,2.604 2.417,0.26 10 false R11 1.167,2.51 3.375,2.844 2.208,0.333 10 false Back Door Lock with Courtesy Light Switch Assembly 1.26,1.75 3.385,2.115 2.125,0.365 10 false Back Door Courtesy Light Switch 1.177,1.51 2.167,2.031 0.99,0.521 10 false ACT- 3.177,1.51 4.167,2.031 0.99,0.521 10 false D+ 6.052,1.135 6.667,1.333 0.615,0.198 10 false +B

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
Back Door Courtesy Switch Status Back door courtesy light switch signal Close or Open Close: Back door closed
Open: Back door open 		-
Body Electrical > Main Body > Data List
Tester Display
Back Door Courtesy Switch Status
50003 449 34
OK:

Normal conditions listed above are displayed.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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


NG

2.INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY
2.INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

Click hereVehicle Interior>DOOR LOCK>BACK DOOR LOCK>INSPECTION

Result:
Result Proceed to
OK (w/ Power Back Door System) A
OK (w/o Power Back Door System) B
NG C



A

3.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

B

5.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

C

REPLACE BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY

Click hereVehicle Interior>DOOR LOCK>BACK DOOR LOCK>REMOVAL


3.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the R14 back door lock with courtesy light switch assembly connector.


b.

Disconnect the 6F power distribution box assembly connector.


c.

Disconnect the R28 multiplex network door ECU connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
R14-4 (CTY) - 6F-2 Always Below 1 Ω
R14-4 (CTY) or 6F-2 - Body ground Always 10 kΩ or higher
R14-1 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

4.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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

E546217C05
4.969,0.417 5.51,0.625 0.542,0.208 1.448,0.219 1.99,0.427 0.542,0.208 6.365,1.292 6.208,1.292 6.208,1.292 5.958,0.896 true 0.115,0.063 0.427,0.219 0.313,0.156 10 false *a 5.188,0.438 5.531,0.667 0.344,0.229 10 false A 6.427,1.229 6.823,1.458 0.396,0.229 10 false BCTY 1.646,0.25 1.99,0.479 0.344,0.229 10 false 6F
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



b.

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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
6F-2 - A-19 (BCTY) 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.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the R11 back door lock with courtesy light switch assembly connector.


b.

Disconnect the 6F power distribution box assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
R11-3 (D+) - 6F-2 Always Below 1 Ω
R11-3 (D+) or 6F-2 - Body ground Always 10 kΩ or higher
R11-2 (ACT-) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

6.CHECK POWER DISTRIBUTION BOX ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK POWER DISTRIBUTION BOX ASSEMBLY
a.

Remove the power distribution box assembly.

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

E546217C04
4.969,0.417 5.51,0.625 0.542,0.208 1.448,0.219 1.99,0.427 0.542,0.208 6.365,1.292 6.208,1.292 6.208,1.292 5.958,0.896 true 0.115,0.063 0.427,0.219 0.313,0.156 10 false *a 5.188,0.438 5.531,0.667 0.344,0.229 10 false A 6.427,1.229 6.823,1.458 0.396,0.229 10 false BCTY 1.646,0.25 1.99,0.479 0.344,0.229 10 false 6F
*a Component without harness connected
(Power Distribution Box Assembly) 		- -



b.

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


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
6F-2 - A-19 (BCTY) 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