RM38T0EC
_58
Vehicle Interior
_112288
LIGHTING (INT)
_0510959
LIGHTING SYSTEM
J
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
2.917,0.594 3.073,0.792
0.156,0.198
10
false
1
2.917,1.885 3.073,2.083
0.156,0.198
10
false
1
5.854,0.51 6.146,0.719
0.292,0.208
10
false
6
4.125,0.49 4.438,0.688
0.313,0.198
10
false
28
4.156,1.823 4.469,2.021
0.313,0.198
10
false
1
4.125,0.708 4.438,0.906
0.313,0.198
10
false
8F
4.135,2.042 4.448,2.24
0.313,0.198
10
false
8F
5.854,1.813 6.042,1.99
0.188,0.177
10
false
1
6.135,0.531 6.75,0.729
0.615,0.198
10
false
LCTY
6.156,1.854 6.771,2.052
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
0.958,2.292 1.271,2.49
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 1.469,1.167
0.458,0.302
10
false
O31
4.333,2.625 5.781,3
1.448,0.375
10
false
Power Distribution Box Assembly
5.448,3.052 7.094,3.615
1.646,0.563
10
false
Main Body ECU (Multiplex Network Body ECU)
0.969,2.458 4.49,2.656
3.521,0.198
10
false
Rear Door Courtesy Light Switch Assembly (RH)
5.802,2.042 6.115,2.24
0.313,0.198
10
false
MB
5.792,0.698 6.104,0.896
0.313,0.198
10
false
MB
CAUTION / NOTICE / HINT
- NOTICE:
-
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.*1
*1: w/ Smart Entry and Start 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 - 50003 449 32,33
- OK:
Normal conditions listed above are displayed.
- Result:
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
B
2.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
C
5.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
2.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
- Result:
Proceed to OK NG
OK
3.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH) - POWER DISTRIBUTION BOX ASSEMBLY)
NG
REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
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
- 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
1.563,0.208 1.938,0.438
0.375,0.229
4.635,0.271 5.01,0.5
0.375,0.229
4.594,0.896 4.458,1.313
true
0.26,0.104 0.5,0.302
0.24,0.198
10
false
*a
4.25,1.354 4.688,1.531
0.438,0.177
10
false
LCTY
1.667,0.24 2,0.406
0.333,0.167
10
false
8F
4.74,0.313 5.073,0.479
0.333,0.167
10
false
MB
| *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.
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
- Result:
Proceed to OK NG
OK
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
NG
REPLACE POWER DISTRIBUTION BOX ASSEMBLY
5.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
- Result:
Proceed to OK NG
OK
6.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - POWER DISTRIBUTION BOX ASSEMBLY)
NG
REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
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
- 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
1.563,0.208 1.938,0.438
0.375,0.229
4.635,0.271 5.01,0.5
0.375,0.229
4.052,0.896 3.917,1.313
true
0.26,0.104 0.5,0.302
0.24,0.198
10
false
*a
3.688,1.344 4.125,1.521
0.438,0.177
10
false
RCTY
1.656,0.24 1.99,0.406
0.333,0.167
10
false
8F
4.74,0.313 5.073,0.479
0.333,0.167
10
false
MB
| *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.
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
- Result:
Proceed to OK NG
OK
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
NG
REPLACE POWER DISTRIBUTION BOX ASSEMBLY