RM36D0EC _59 Vehicle Exterior _083096 LIGHTING (EXT) _0402622 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, AUTO position

Dimmer switch in High, Low or Flash (pass) position

Fog light switch in Rr or OFF position

WIRING DIAGRAM

0.313,4.635 0.625,4.833 0.313,0.198 10 false IC 1.188,1.708 1.646,1.906 0.458,0.198 10 false 5 V 2.719,0.323 3.333,0.521 0.615,0.198 10 false HEAD 3.24,0.448 3.698,0.646 0.458,0.198 10 false G68 3.313,0.24 3.469,0.438 0.156,0.198 10 false 7 4.906,0.344 5.219,0.542 0.313,0.198 10 false 26 5.656,0.156 5.969,0.354 0.313,0.198 10 false +B 5.146,0.344 5.76,0.542 0.615,0.198 10 false HEAD 2.896,3.417 3.208,3.615 0.313,0.198 10 false HU 4.458,3.417 4.771,3.615 0.313,0.198 10 false HU 5.865,2.021 6.177,2.219 0.313,0.198 10 false HU 6.229,2.021 6.542,2.219 0.313,0.198 10 false HF 2.917,4.073 3.229,4.271 0.313,0.198 10 false HF 4.458,4.073 4.771,4.271 0.313,0.198 10 false HF 6.583,2.021 6.896,2.219 0.313,0.198 10 false EL 3.281,6.479 3.594,6.677 0.313,0.198 10 false z1 3.271,3.531 3.583,3.729 0.313,0.198 10 false z1 3.281,4.188 3.594,4.385 0.313,0.198 10 false z1 3.271,5.823 3.583,6.021 0.313,0.198 10 false z1 3.302,3.333 3.458,3.531 0.156,0.198 10 false 6 3.313,3.979 3.469,4.177 0.156,0.198 10 false 7 4.156,3.323 4.313,3.521 0.156,0.198 10 false 1 4.167,3.979 4.323,4.177 0.156,0.198 10 false 6 4.135,6.49 4.458,6.719 0.323,0.229 10 false z8 4.135,3.531 4.635,4.031 0.5,0.5 10 false z8 4.125,4.188 4.438,4.479 0.313,0.292 10 false z8 4.115,5.823 4.427,6.188 0.313,0.365 10 false z8 2.771,5.708 3.542,5.906 0.771,0.198 10 false BFG 4.521,5.708 5.292,5.906 0.771,0.198 10 false BFG 4.552,6.375 5.01,6.573 0.458,0.198 10 false B 2.948,6.365 3.406,6.563 0.458,0.198 10 false B 3.271,5.625 3.583,5.823 0.313,0.198 10 false 11 3.271,6.281 3.583,6.479 0.313,0.198 10 false 12 4.156,5.604 4.313,5.833 0.156,0.229 10 false 4 4.125,6.281 4.438,6.479 0.313,0.198 10 false 13 5.833,4.76 6.292,4.958 0.458,0.198 10 false BFG 6.281,4.76 6.438,4.958 0.156,0.198 10 false B 6.594,4.76 6.906,4.958 0.313,0.198 10 false EL 5.26,2.208 6.635,2.406 1.375,0.198 10 false High 5.26,2.406 6.49,2.604 1.229,0.198 10 false Low 5.219,2.615 6.292,2.813 1.073,0.198 10 false Flash 4.74,2.813 6.729,3.01 1.99,0.198 10 false Dimmer Switch 5.292,4.958 5.75,5.156 0.458,0.198 10 false OFF 5.333,5.156 5.948,5.354 0.615,0.198 10 false Fr 5.229,5.354 6.302,5.552 1.073,0.198 10 false Fr&Rr 4.938,5.552 6.469,5.75 1.531,0.198 10 false Fog Light Switch 4.938,0.885 5.396,1.083 0.458,0.198 10 false G196 4.938,1.021 6.604,2.083 1.667,1.063 10 false Main Body ECU (Multiplex Network Body ECU) 1.25,7.542 3.542,7.74 2.292,0.198 10 false Steering Sensor 3.323,7.469 4.313,8.021 0.99,0.552 10 false Steering Wheel Switch Housing 5.26,7.531 6.844,7.927 1.583,0.396 10 false Turn Signal Switch

0.323,4.094 0.635,4.292 0.313,0.198 10 false IC 2.688,3.406 2.844,3.604 0.156,0.198 10 false A 4.281,3.396 4.438,3.594 0.156,0.198 10 false A 6.115,0.719 6.271,0.917 0.156,0.198 10 false T 2.667,4.281 2.823,4.479 0.156,0.198 10 false T 5.76,0.729 5.917,0.927 0.156,0.198 10 false A 6.406,0.729 6.563,0.927 0.156,0.198 10 false H 4.271,5.031 4.427,5.229 0.156,0.198 10 false H 2.656,5.052 2.813,5.25 0.156,0.198 10 false H 6.688,0.74 7,0.938 0.313,0.198 10 false EL 5.073,1.01 5.688,1.208 0.615,0.198 10 false AUTO 5.146,1.427 5.76,1.625 0.615,0.198 10 false TAIL 5.073,1.865 5.688,2.063 0.615,0.198 10 false HEAD 4.448,2.146 5.729,2.646 1.281,0.5 10 false Light Control Switch 3.813,3.542 4.156,3.875 0.344,0.333 10 false z8 3.813,4.406 4.125,4.75 0.313,0.344 10 false z8 3.813,5.177 4.073,5.448 0.26,0.271 10 false z8 3.813,7.094 4.083,7.365 0.271,0.271 10 false z8 2.958,7.083 3.271,7.281 0.313,0.198 10 false z1 2.948,3.542 3.26,3.74 0.313,0.198 10 false z1 2.958,4.406 3.271,4.604 0.313,0.198 10 false z1 2.958,5.167 3.271,5.365 0.313,0.198 10 false z1 4.25,6.969 4.563,7.167 0.313,0.198 10 false EL 2.604,6.979 2.917,7.177 0.313,0.198 10 false EL 2.979,3.333 3.135,3.531 0.156,0.198 10 false 5 3.823,3.344 4.135,3.542 0.313,0.198 10 false 10 3.802,4.219 4.115,4.417 0.313,0.198 10 false 14 3.844,4.979 4,5.177 0.156,0.198 10 false 5 3.802,6.875 4.115,7.073 0.313,0.198 10 false 12 2.958,6.875 3.271,7.073 0.313,0.198 10 false 13 3,4.969 3.156,5.167 0.156,0.198 10 false 4 3,4.208 3.156,4.406 0.156,0.198 10 false 3 1.042,7.688 3.333,7.885 2.292,0.198 10 false Steering Sensor 3,7.688 4,8.229 1,0.542 10 false Steering Wheel Switch Housing 5.031,7.677 6.5,7.958 1.469,0.281 10 false Turn Signal Switch 4.25,4.281 4.406,4.479 0.156,0.198 10 false T

CAUTION / NOTICE / HINT

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

PROCEDURE

1.READ VALUE USING GTS

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

Chassis > Steering Angle Sensor > Data List

Tester Display	Measurement Item	Range	Normal Condition	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 in neither TAIL nor HEAD position ON: Light control switch in TAIL or HEAD 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: Fog light switch in off position ON: Fog light switch in Fr position	-
Rear Fog Light/Bad Weather Switch	Rear fog light switch signal	OFF or ON	OFF: Fog light switch in off position ON: Fog light switch in Fr&Rr position	-

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 417 2,3,4,5,6,11,12

OK:: Normal conditions listed above are displayed.

Result:

Proceed to
OK
NG

2.READ VALUE USING GTS

7.INSPECT TURN SIGNAL SWITCH

2.READ VALUE USING GTS

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

Chassis > Steering Angle Sensor > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
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	-

Chassis > Steering Angle Sensor > Data List

Tester Display
Head Light Switch (Head)

50003 445 6

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	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:

Result	Proceed to
OK	A
NG ("Steering Angle Sensor" side abnormality)	B
NG ("Main Body" side abnormality)	C
NG ("Steering Angle Sensor" and "Main Body" are abnormality)	D

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>PROBLEM SYMPTOMS TABLE202409,999999,_59,_083096,_0402622,RM100000002NQ37,

REPLACE STEERING SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>STEERING ANGLE SENSOR>REMOVAL202409,999999,_54,_083077,_0403135,RM100000002NU6F,

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

4.INSPECT TURN SIGNAL SWITCH

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

Disconnect the G139 main body ECU (multiplex network body ECU) connector.

Disconnect the G68 steering sensor connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G68-7 (HEAD) - G139-26 (HEAD)	Always	Below 1 Ω

Result:

Proceed to
OK
NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202409,999999,_57,_083090,_0403094,RM100000002NG0W,

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.INSPECT TURN SIGNAL SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT DIMMER SWITCH>INSPECTION201910,999999,_59,_083096,_0402639,RM100000001JJX3,

Result:

Proceed to
OK
NG

5.INSPECT STEERING WHEEL SWITCH HOUSING

REPLACE TURN SIGNAL SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT DIMMER SWITCH>REMOVAL201910,999999,_59,_083096,_0402639,RM100000001JJX2,

5.INSPECT STEERING WHEEL SWITCH HOUSING

Click hereVehicle Exterior>LIGHTING (EXT)>SWITCH HOUSING>INSPECTION201910,999999,_59,_083096,_0402640,RM100000001JJX5,

Result:

Proceed to
OK
NG

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

REPLACE STEERING WHEEL SWITCH HOUSING

Click hereVehicle Exterior>LIGHTING (EXT)>SWITCH HOUSING>REMOVAL202409,999999,_59,_083096,_0402640,RM100000002NTEQ,

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

Disconnect the G139 main body ECU (multiplex network body ECU) connector.

Disconnect the G68 steering sensor connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G68-7 (HEAD) or G139-26 (HEAD) - Body ground	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE STEERING SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>STEERING ANGLE SENSOR>REMOVAL202409,999999,_54,_083077,_0403135,RM100000002NU6F,

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.INSPECT TURN SIGNAL SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT DIMMER SWITCH>INSPECTION201910,999999,_59,_083096,_0402639,RM100000001JJX3,

Result:

Proceed to
OK
NG

8.INSPECT STEERING WHEEL SWITCH HOUSING

REPLACE TURN SIGNAL SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT DIMMER SWITCH>REMOVAL201910,999999,_59,_083096,_0402639,RM100000001JJX2,

8.INSPECT STEERING WHEEL SWITCH HOUSING

Click hereVehicle Exterior>LIGHTING (EXT)>SWITCH HOUSING>INSPECTION201910,999999,_59,_083096,_0402640,RM100000001JJX5,

Result:

Proceed to
OK
NG

REPLACE STEERING SENSOR

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>STEERING ANGLE SENSOR>REMOVAL202409,999999,_54,_083077,_0403135,RM100000002NU6F,

REPLACE STEERING WHEEL SWITCH HOUSING

Click hereVehicle Exterior>LIGHTING (EXT)>SWITCH HOUSING>REMOVAL202409,999999,_59,_083096,_0402640,RM100000002NTEQ,