RM38N0EC _59 Vehicle Exterior _111834 LIGHTING (EXT) _0499887 LIGHTING SYSTEM J

LIGHTING (EXT)  LIGHTING SYSTEM  Rear Fog Light Circuit  


DESCRIPTION

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

WIRING DIAGRAM

E480230E01
5.458,3.969 7.094,4.375 1.635,0.406 10 false Main Body ECU (Multiplex Network Body ECU) 4.042,2.365 6.146,2.563 2.104,0.198 10 false Power Distribution Box Assembly 6.25,0.99 6.917,1.698 0.667,0.708 10 false CXP1 5.969,0.833 6.635,1.542 0.667,0.708 10 false 22 5.583,0.948 6.25,1.656 0.667,0.708 10 false IC 4.531,1.458 5.198,2.167 0.667,0.708 10 false RR FOG 3.677,0.813 4.344,1.521 0.667,0.708 10 false 4G 3.698,0.604 4.365,1.313 0.667,0.708 10 false 1 3.677,1.792 4.344,2.5 0.667,0.708 10 false 4E 3.667,1.583 4.333,2.292 0.667,0.708 10 false 30 0.208,0.802 2.125,1.646 1.917,0.844 10 false from Auxiliary Battery 2.25,0.958 3.427,1.302 1.177,0.344 10 false INP STD NO. 1-1 1.365,1.99 2.188,2.521 0.823,0.531 10 false Fog Light 0.885,2.406 3.313,2.729 2.427,0.323 10 false Rear Turn Signal Light Assembly LH 0.854,2.208 1.677,2.74 0.823,0.531 10 false S13 0.99,1.667 1.323,1.938 0.333,0.271 10 false 1 1.208,1.677 1.458,1.979 0.25,0.302 10 false E 2.052,1.667 2.302,1.969 0.25,0.302 10 false B 2.271,1.677 2.521,1.979 0.25,0.302 10 false 2 0.896,4.406 2.979,4.646 2.083,0.24 10 false : CXPI Communication Line 5.448,3.792 5.833,4.031 0.385,0.24 10 false MB 0.844,3.479 1.667,4.01 0.823,0.531 10 false S9 2.073,2.948 2.323,3.25 0.25,0.302 10 false B 2.26,2.938 2.51,3.24 0.25,0.302 10 false 2 1.188,2.969 1.438,3.271 0.25,0.302 10 false E 1.031,2.969 1.365,3.24 0.333,0.271 10 false 1 0.865,3.698 3.333,4.063 2.469,0.365 10 false Rear Turn Signal Light Assembly RH 1.365,3.25 2.188,3.781 0.823,0.531 10 false Fog Light

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.

·

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CXPI communication malfunctions before troubleshooting this symptom.

Click herePower Source / Network>NETWORKING>CXPI COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING



PROCEDURE

1.READ VALUE USING GTS
a.

Turn the light control switch to the tail position.


b.

Turn the rear fog light switch on.


c.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse shut off status OFF or ON OFF: Fuse has no shut off history
ON: Fuse has shut off history 		-
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

6.READ VALUE USING GTS
2.READ VALUE USING GTS
a.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
Rear Fog Light Input Signal Rear fog light input OFF or ON OFF: Rear fog lights off
ON: Rear fog lights 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.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


3.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 4G power distribution box assembly connector.


b.

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

Standard Voltage:
Tester Connection Condition Specified Condition
4G-1 - Body ground Ignition switch off*1
Always*2 		11 to 14 V


*1: for HV Model

*2: for Gasoline Model



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the S13 rear turn signal light assembly LH connector.


b.

Disconnect the S9 rear turn signal light assembly RH connector.


c.

Disconnect the 4E power distribution box assembly connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(S13,S9)Location & Routing

Click Connector(S13)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LH

Click Connector(S9)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RH

S13-2 (B) - 4E-30 Always Below 1 Ω
S9-2 (B) - 4E-30 Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - BODY GROUND)
a.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(S9,S13)Location & Routing

Click Connector(S9)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RH

Click Connector(S13)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LH

S9-1 (E) - Body ground Always Below 1 Ω
S13-1 (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.READ VALUE USING GTS
a.

Disconnect the S13 rear turn signal light assembly LH connector.


b.

Turn the light control switch to the tail position.


c.

Turn the rear fog light switch on.


d.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse shut off status OFF or ON OFF: Fuse has no shut off history
ON: Fuse has shut off history 		-
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 TURN SIGNAL LIGHT ASSEMBLY LH

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


NG

7.READ VALUE USING GTS
7.READ VALUE USING GTS
a.

Disconnect the S9 rear turn signal light assembly RH connector.


b.

Turn the light control switch to the tail position.


c.

Turn the rear fog light switch on.


d.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List
Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
Rear Fog Light Fuse Shut Off Status Rear fog light fuse shut off status OFF or ON OFF: Fuse has no shut off history
ON: Fuse has shut off history 		-
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 TURN SIGNAL LIGHT ASSEMBLY RH

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


NG

8.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
8.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)
a.

Disconnect the 4E 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

Click Location & Routing(S9,S13)Location & Routing

Click Connector(S9)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RH

Click Connector(S13)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LH

S9-2 (B) or 4E-30 - Body ground Always 10 kΩ or higher
S13-2 (B) or 4E-30 - 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