RM36D0EC _59 Vehicle Exterior _083096 LIGHTING (EXT) _0402622 LIGHTING SYSTEM J

LIGHTING (EXT)  LIGHTING SYSTEM  Rear Fog Light Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the rear fog light.

WIRING DIAGRAM

for SFTM Made


E549765E02
4.625,1.74 5.083,1.938 0.458,0.198 10 false I/F 5.219,1.51 5.677,1.708 0.458,0.198 10 false CPU 3.875,3.583 5.979,3.813 2.104,0.229 10 false 6F 3.865,3.74 5.969,3.969 2.104,0.229 10 false Power Distribution Box Assembly 4.01,1.635 4.635,2.115 0.625,0.479 10 false 7 4.615,1.323 5.24,1.802 0.625,0.479 10 false +B 5.365,4.219 7.073,4.583 1.708,0.365 10 false Main Body ECU (Multiplex Network Body ECU) 0.802,4.146 2.906,4.375 2.104,0.229 10 false : CXPI Communication Line 1.063,2.219 3.833,2.438 2.771,0.219 10 false Q21 1.063,2.385 3.833,2.604 2.771,0.219 10 false Rear Fog Light Assembly LH 2.344,1.656 3.26,2.083 0.917,0.427 10 false B 1.146,1.625 2.063,2.052 0.917,0.427 10 false E 0.917,1.635 1.229,1.833 0.313,0.198 10 false 1 2.625,1.615 3.01,1.833 0.385,0.219 10 false 2 1.51,1.927 2.427,2.354 0.917,0.427 10 false Rear Fog 1.083,3.771 3.854,3.99 2.771,0.219 10 false Rear Fog Light Assembly RH 1.042,3.625 3.813,3.844 2.771,0.219 10 false Q20 2.385,3 3.302,3.427 0.917,0.427 10 false B 1.167,3 2.083,3.427 0.917,0.427 10 false E 0.917,3.01 1.229,3.208 0.313,0.198 10 false 1 2.646,2.99 3.031,3.208 0.385,0.219 10 false 2


for GTMC Made


E463163E11
4.625,1.74 5.083,1.938 0.458,0.198 10 false I/F 5.219,1.51 5.677,1.708 0.458,0.198 10 false CPU 3.875,3.583 5.979,3.813 2.104,0.229 10 false 6F 3.865,3.74 5.969,3.969 2.104,0.229 10 false Power Distribution Box Assembly 4.01,1.635 4.635,2.115 0.625,0.479 10 false 7 4.615,1.323 5.24,1.802 0.625,0.479 10 false +B 5.365,4.219 7.073,4.583 1.708,0.365 10 false Main Body ECU (Multiplex Network Body ECU) 0.802,4.146 2.906,4.375 2.104,0.229 10 false : CXPI Communication Line 1.063,2.25 3.833,2.469 2.771,0.219 10 false Q22 1.063,2.427 3.833,2.646 2.771,0.219 10 false Rear Fog Light Assembly 2.344,1.656 3.26,2.083 0.917,0.427 10 false B 1.146,1.625 2.063,2.052 0.917,0.427 10 false E 0.917,1.635 1.229,1.833 0.313,0.198 10 false 1 2.625,1.615 3.01,1.833 0.385,0.219 10 false 2 1.51,1.927 2.427,2.354 0.917,0.427 10 false Rear Fog


CAUTION / NOTICE / HINT

NOTICE:
·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

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



PROCEDURE

1.READ VALUE USING GTS
a.

Turn the rear fog light switch on.


b.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse OFF or ON OFF: Fuse not shut off
ON: Fuse shut off 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Fuse Shut Off Status
50003 475 1313
OK:

The Data List value displays "OFF".



Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS

NG

7.CONFIRM MODEL
2.READ VALUE USING GTS
a.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Input Signal Rear fog light switch input signal OFF or ON OFF: Rear fog light switch off
ON: Rear fog light switch on 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Input Signal
50003 475 1310
OK:

Display changes according to the rear fog light switch operation.



Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE


3.READ VALUE USING GTS
a.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Output Signal Rear fog light output condition OFF or ON OFF: Rear fog light not illuminated
ON: Rear fog light illuminated 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Output Signal
50003 475 1311
OK:

Display changes according to the rear fog light switch operation.



Result:
Proceed to
OK
NG



OK

4.CONFIRM MODEL

NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


4.CONFIRM MODEL
a.

Choose the model to be inspected.


Result:
Result Proceed to
for SFTM Made A
for GTMC Made B



A

5.CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)

B

6.CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
5.CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the 6F power distribution box assembly connector.


b.

Disconnect the Q20 rear fog light assembly RH connector.


c.

Disconnect the Q21 rear fog light assembly LH connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Q20-2 (B) - 6F-7 Always Below 1 Ω
Q20-1 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY AND BODY GROUND)
a.

Disconnect the 6F power distribution box assembly connector.


b.

Disconnect the Q22 rear fog light assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Q22-2 (B) - 6F-7 Always Below 1 Ω
Q22-1 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CONFIRM MODEL
a.

Choose the model to be inspected.


Result:
Result Proceed to
for SFTM Made A
for GTMC Made B



A

8.CHECK REAR FOG LIGHT ASSEMBLY RH

B

11.CHECK REAR FOG LIGHT ASSEMBLY
8.CHECK REAR FOG LIGHT ASSEMBLY RH
a.

Disconnect the Q20 rear fog light assembly RH connector.


b.

Turn the rear fog light switch on.


c.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse OFF or ON OFF: Fuse not shut off
ON: Fuse shut off 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Fuse Shut Off Status
50003 475 1313
OK:

The Data List value displays "OFF".



Result:
Proceed to
OK
NG



OK

REPLACE REAR FOG LIGHT ASSEMBLY RH

Click hereVehicle Exterior>LIGHTING (EXT)>REAR FOG LIGHT ASSEMBLY>REMOVAL


NG

9.CHECK REAR FOG LIGHT ASSEMBLY LH
9.CHECK REAR FOG LIGHT ASSEMBLY LH
a.

Disconnect the Q21 rear fog light assembly LH connector.


b.

Turn the rear fog light switch on.


c.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse OFF or ON OFF: Fuse not shut off
ON: Fuse shut off 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Fuse Shut Off Status
50003 475 1313
OK:

The Data List value displays "OFF".



Result:
Proceed to
OK
NG



OK

REPLACE REAR FOG LIGHT ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>REAR FOG LIGHT ASSEMBLY>REMOVAL


NG

10.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - REAR FOG LIGHT ASSEMBLY)
10.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - REAR FOG LIGHT ASSEMBLY)
a.

Disconnect the 6F 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
6F-7 or Q20-2 (B) - Body ground Always 10 kΩ or higher
6F-7 or Q21-2 (B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK REAR FOG LIGHT ASSEMBLY
a.

Disconnect the Q22 rear fog light assembly connector.


b.

Turn the rear fog light switch on.


c.

Using the GTS, read the Data List.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse OFF or ON OFF: Fuse not shut off
ON: Fuse shut off 		-
Body Electrical > Power Distribution Box > Data List
Tester Display
Rear Fog Light Fuse Shut Off Status
50003 475 1313
OK:

The Data List value displays "OFF".



Result:
Proceed to
OK
NG



OK

REPLACE REAR FOG LIGHT ASSEMBLY

Click hereVehicle Exterior>LIGHTING (EXT)>REAR FOG LIGHT ASSEMBLY>REMOVAL


NG

12.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - REAR FOG LIGHT ASSEMBLY)
12.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - REAR FOG LIGHT ASSEMBLY)
a.

Disconnect the 6F 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
6F-7 or Q22-2 (B) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR