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

LIGHTING (EXT)  LIGHTING SYSTEM  Headlight Dimmer Switch Circuit  


DESCRIPTION

The steering sensor receives the following switch information:

·

Light control switch in tail, head or AUTO position

·

Dimmer switch in high, low or high flash (pass) position

·

Fog light switch in front, rear or off position


WIRING DIAGRAM

E442827E14
5.302,0.333 5.917,0.531 0.615,0.198 10 false HEAD 5.635,0.177 5.917,0.375 0.281,0.198 10 false +B 4.823,0.729 5.104,0.927 0.281,0.198 10 false E37 4.833,0.885 6.469,1.344 1.635,0.458 10 false Main Body ECU (Multiplex Network Body ECU) 5.042,0.333 5.656,0.531 0.615,0.198 10 false 26 3.24,2.01 3.521,2.208 0.281,0.198 10 false E60 3.302,1.792 3.5,1.958 0.198,0.167 10 false 7 2.698,1.875 3.313,2.073 0.615,0.198 10 false HEAD 1.302,1.948 1.573,2.198 0.271,0.25 10 false 5 V 0.323,4.198 0.531,4.438 0.208,0.24 10 false IC 4.833,3.125 5.948,3.385 1.115,0.26 10 false Dimmer Switch 5.104,2.5 6.021,2.75 0.917,0.25 10 false PASSING 5.26,2.698 6.177,2.948 0.917,0.25 10 false OFF 5.146,2.896 6.063,3.146 0.917,0.25 10 false HI BEAM 5.896,2.302 6.125,2.531 0.229,0.229 10 false HF 6.24,2.302 6.469,2.531 0.229,0.229 10 false HU 6.594,2.302 6.823,2.531 0.229,0.229 10 false EL 4.469,3.708 4.698,3.938 0.229,0.229 10 false HF 3.24,3.813 3.531,4.063 0.292,0.25 10 false z13 4.104,3.813 4.417,4.021 0.313,0.208 10 false z14 2.906,3.708 3.135,3.938 0.229,0.229 10 false HF 4.479,4.365 4.708,4.594 0.229,0.229 10 false HU 2.906,4.354 3.135,4.583 0.229,0.229 10 false HU 4.802,5.865 5.927,6.135 1.125,0.271 10 false Fog Light Switch 4.563,7.021 4.792,7.25 0.229,0.229 10 false B 2.99,7.031 3.219,7.26 0.229,0.229 10 false B 4.552,6.25 5.031,6.469 0.479,0.219 10 false BFG 2.813,6.24 3.188,6.469 0.375,0.229 10 false BFG 4.104,4.469 4.49,4.688 0.385,0.219 10 false z14 4.094,6.385 4.427,6.667 0.333,0.281 10 false z14 4.094,7.135 4.51,7.427 0.417,0.292 10 false z14 5.313,5.24 5.656,5.427 0.344,0.188 10 false OFF 5.385,5.427 5.729,5.615 0.344,0.188 10 false Fr 5.25,5.635 5.708,5.823 0.458,0.188 10 false Fr&Rr 6.292,5.042 6.521,5.271 0.229,0.229 10 false B 5.833,5.042 6.208,5.271 0.375,0.229 10 false BFG 6.583,5.042 6.813,5.271 0.229,0.229 10 false EL 1.24,8.323 2.531,8.521 1.292,0.198 10 false Steering Sensor 3.344,8.25 4.323,8.667 0.979,0.417 10 false Steering Wheel Switch Housing 5.198,8.292 6.646,8.51 1.448,0.219 10 false Turn Signal Switch 3.271,6.927 3.5,7.156 0.229,0.229 10 false 12 3.25,6.177 3.479,6.406 0.229,0.229 10 false 11 3.313,4.271 3.542,4.5 0.229,0.229 10 false 6 3.313,3.594 3.542,3.823 0.229,0.229 10 false 7 4.156,3.604 4.385,3.833 0.229,0.229 10 false 6 4.167,4.271 4.396,4.5 0.229,0.229 10 false 1 4.167,6.188 4.396,6.417 0.229,0.229 10 false 4 4.125,6.927 4.354,7.156 0.229,0.229 10 false 13 3.25,4.479 3.656,4.75 0.406,0.271 10 false z13 3.24,6.375 3.646,6.646 0.406,0.271 10 false z13 3.25,7.135 3.656,7.406 0.406,0.271 10 false z13

E442828E12
2.938,3.635 3.25,3.833 0.313,0.198 10 false z13 2.948,4.375 3.26,4.573 0.313,0.198 10 false z13 2.948,5.146 3.26,5.344 0.313,0.198 10 false z13 2.938,5.927 3.25,6.125 0.313,0.198 10 false z13 0.344,3 0.656,3.198 0.313,0.198 10 false IC 2.688,3.479 3.24,3.677 0.552,0.198 10 false A 2.677,4.281 3.229,4.479 0.552,0.198 10 false T 2.677,5.031 3.229,5.229 0.552,0.198 10 false H 2.635,5.844 3.188,6.042 0.552,0.198 10 false EL 3.01,3.448 3.563,3.646 0.552,0.198 10 false 5 3.01,4.188 3.563,4.385 0.552,0.198 10 false 3 3,4.958 3.552,5.156 0.552,0.198 10 false 4 2.969,5.74 3.521,5.938 0.552,0.198 10 false 13 3.792,3.625 4.104,3.823 0.313,0.198 10 false z14 3.781,4.375 4.094,4.573 0.313,0.198 10 false z14 3.781,5.135 4.094,5.333 0.313,0.198 10 false z14 3.792,5.927 4.104,6.125 0.313,0.198 10 false z14 4.458,2.323 5.26,2.719 0.802,0.396 10 false Light Control Switch 4.24,3.49 4.792,3.688 0.552,0.198 10 false A 4.25,4.281 4.802,4.479 0.552,0.198 10 false T 4.24,5.042 4.792,5.24 0.552,0.198 10 false H 4.25,5.844 4.802,6.042 0.552,0.198 10 false EL 5.385,1.5 5.938,1.698 0.552,0.198 10 false A 6.198,1.5 6.75,1.698 0.552,0.198 10 false H 6.51,1.5 6.792,1.708 0.281,0.208 10 false EL 4.635,1.677 5.188,1.875 0.552,0.198 10 false AUTO 4.646,2.104 5.198,2.302 0.552,0.198 10 false HEAD 3.833,3.448 4.385,3.646 0.552,0.198 10 false 10 3.823,4.188 4.375,4.385 0.552,0.198 10 false 14 3.854,4.958 4.406,5.156 0.552,0.198 10 false 5 3.823,5.74 4.375,5.938 0.552,0.198 10 false 12 1.031,6.531 2.313,6.844 1.281,0.313 10 false Steering Sensor 3.031,6.531 4,6.979 0.969,0.448 10 false Steering Wheel Switch Housing 4.979,6.542 6.542,6.813 1.563,0.271 10 false Turn Signal Switch 5.854,1.5 6.406,1.698 0.552,0.198 10 false T 4.688,1.885 5.24,2.083 0.552,0.198 10 false TAIL

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.

Chassis > Steering Angle Sensor > Data List
Tester Display Measurement Item Normal Condition Reference Value Diagnostic Note
Auto Light Switch Light control switch AUTO position signal OFF or ON OFF: Light control switch not in AUTO position
ON: Light control switch in AUTO position 		-
Head Light Switch (Tail) Light control switch tail position signal OFF or ON OFF: Light control switch not in tail position
ON: Light control switch in tail position 		-
Head Light Switch (Head) Light control switch head position signal OFF or ON OFF: Light control switch not in head position
ON: Light control switch in head position 		-
High Beam Main Switch Dimmer switch high position signal OFF or ON OFF: Dimmer switch not in high position
ON: Dimmer switch in high position 		-
Passing Light Switch Dimmer switch high flash position (pass) signal OFF or ON OFF: Dimmer switch not in high flash position
ON: Dimmer switch in high flash position 		-
Front Fog Light Switch Front fog light switch signal OFF or ON OFF: Front fog light switch off
ON: Front fog light switch on 		-
Rear Fog Light/Bad Weather Switch Rear fog light switch signal OFF or ON OFF: Rear fog light switch off
ON: Rear fog light switch on 		-
Chassis > Steering Angle Sensor > Data List
Tester Display
Auto Light Switch
Head Light Switch (Tail)
Head Light Switch (Head)
High Beam Main Switch
Passing Light Switch
Front Fog Light Switch
Rear Fog Light/Bad Weather Switch
50003 445 4,5,6,7,8,13,14
OK:

Normal conditions listed above are displayed.



Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS

NG

5.INSPECT TURN SIGNAL SWITCH
2.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 Normal Condition Reference Value Diagnostic Note
Light Control Switch (HEAD) Light control switch head position signal OFF or ON OFF: Light control switch not in head position
ON: Light control switch in head position 		-
Body Electrical > Main Body > Data List
Tester Display
Light Control Switch (HEAD)
50003 449 108
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 Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE


NG

3.INSPECT STEERING SENSOR
3.INSPECT STEERING SENSOR
E367361C26
1.313,0.646 1.667,0.896 0.354,0.25 4.677,0.771 5.031,1.021 0.354,0.25 1.563,2.167 1.625,1.75 false 5.698,1.99 5.885,1.479 false 0.281,0.292 0.594,0.49 0.313,0.198 10 false *a 1.375,0.688 1.688,0.885 0.313,0.198 10 false E60 4.74,0.802 5.052,1 0.313,0.198 10 false z13 1.396,2.198 1.896,2.438 0.5,0.24 10 false HEAD 5.625,2.01 5.875,2.24 0.25,0.229 10 false H
*a Component without harness connected
(Steering Sensor) 		- -


a.

Remove the steering sensor.

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>STEERING ANGLE SENSOR>REMOVAL


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(E60,z13)Location & Routing

Click Connector(E60)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Steering Sensor

Click Connector(z13)Instrument Panel>Other>Steering Wheel Switch Housing, Steering Sensor

E60-7 (HEAD) - z13-4 (H) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (STEERING SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

NG

REPLACE STEERING SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>STEERING ANGLE SENSOR>REMOVAL


4.CHECK HARNESS AND CONNECTOR (STEERING SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
a.

Disconnect the E37 main body ECU (multiplex network body ECU) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(E60,E37)Location & Routing

Click Connector(E60)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Steering Sensor

Click Connector(E37)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Multiplex Network Body ECU

E60-7 (HEAD) - E37-26 (HEAD) Always Below 1 Ω
E60-7 (HEAD) or E37-26 (HEAD) - Body ground Always 10 kΩ or higher



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

REPAIR OR REPLACE HARNESS OR CONNECTOR