RM38T0EC
_58
Vehicle Interior
_112288
LIGHTING (INT)
_0510959
LIGHTING SYSTEM
J
LIGHTING (INT) LIGHTING SYSTEM 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
1.24,2.229 1.885,2.531
0.646,0.302
10
false
O32
1.24,0.917 1.552,1.115
0.313,0.198
10
false
O30
2.885,0.583 3.042,0.781
0.156,0.198
10
false
1
2.875,1.917 3.031,2.115
0.156,0.198
10
false
1
5.844,0.49 6.156,0.688
0.313,0.198
10
false
2
5.833,1.833 5.99,2.031
0.156,0.198
10
false
4
6.125,0.531 6.74,0.729
0.615,0.198
10
false
FLCY
6.125,1.875 6.74,2.073
0.615,0.198
10
false
FRCY
6.542,0.292 6.854,0.49
0.313,0.198
10
false
+B
6.531,1.646 6.844,1.844
0.313,0.198
10
false
+B
5.802,2.021 6.26,2.219
0.458,0.198
10
false
MB
1.24,1.083 5.063,1.281
3.823,0.198
10
false
Front Door Courtesy Light Switch Assembly (LH)
1.24,2.385 4.333,2.813
3.094,0.427
10
false
Front Door Courtesy Light Switch Assembly (RH)
5.5,3.01 7.135,3.604
1.635,0.594
10
false
Main Body ECU (Multiplex Network Body ECU)
5.813,0.677 6.271,0.875
0.458,0.198
10
false
MB
4.125,2.021 4.583,2.219
0.458,0.198
10
false
8C
4.125,0.698 4.583,0.896
0.458,0.198
10
false
8F
4.156,0.49 4.469,0.688
0.313,0.198
10
false
3
4.156,1.833 4.469,2.031
0.313,0.198
10
false
9
4.396,2.604 5.854,3.052
1.458,0.448
10
false
Power Distribution Box Assembly
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 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 ("FR Door Courtesy Switch Status" is not normal) B NG ("FL Door Courtesy Switch Status" is not normal) C
A
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
B
2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
C
5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
- Result:
Proceed to OK NG
OK
3.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - POWER DISTRIBUTION BOX ASSEMBLY)
NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH)
3.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (RH) - POWER DISTRIBUTION BOX ASSEMBLY)
a.
Disconnect the 8C 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 - 8C-9 Always Below 1 Ω O32-1 - Body ground Always 10 kΩ or higher 8C-9 - 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
1.24,0.198 1.563,0.438
0.323,0.24
4.792,0.375 5.115,0.615
0.323,0.24
4.51,1.177 4.385,0.917
true
0.198,0.146 0.51,0.344
0.313,0.198
10
false
*a
1.323,0.24 1.708,0.479
0.385,0.24
10
false
8C
4.854,0.417 5.25,0.646
0.396,0.229
10
false
MB
4.51,1.219 5.021,1.458
0.51,0.24
10
false
FRCY
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 8C-9 - MB-4 (FRCY) 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 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
- Result:
Proceed to OK NG
OK
6.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH)
6.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH) - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
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 O30-1 - 8F-3 Always Below 1 Ω O30-1 - Body ground Always 10 kΩ or higher 8F-3 - 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
4.167,0.875 4.052,1.24
true
0.26,0.104 0.5,0.302
0.24,0.198
10
false
*a
3.854,1.292 4.292,1.469
0.438,0.177
10
false
FLCY
1.667,0.271 2,0.438
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-3 - MB-2 (FLCY) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
NG
REPLACE POWER DISTRIBUTION BOX ASSEMBLY