RM38T0EC _59 Vehicle Exterior _112294 LIGHTING (EXT) _0510962 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 high flash (pass) position

·

Fog light switch in front*1, Rear or off position

*1: w/ Fog Light



WIRING DIAGRAM

E406759E16
0.313,4.417 0.625,4.615 0.313,0.198 10 false IC 1.188,1.708 1.646,1.906 0.458,0.198 10 false 5 V 2.698,0.323 3.313,0.521 0.615,0.198 10 false HEAD 3.24,0.448 3.698,0.646 0.458,0.198 10 false I229 3.313,0.24 3.469,0.438 0.156,0.198 10 false 7 5.031,0.333 5.344,0.531 0.313,0.198 10 false 26 5.646,0.146 5.958,0.344 0.313,0.198 10 false +B 5.292,0.333 5.906,0.531 0.615,0.198 10 false HEAD 2.885,3.427 3.198,3.625 0.313,0.198 10 false HU 4.51,3.427 4.823,3.625 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 2.896,4.094 3.208,4.292 0.313,0.198 10 false HF 4.521,4.083 4.833,4.281 0.313,0.198 10 false HF 6.583,2.021 6.896,2.219 0.313,0.198 10 false EL 3.24,3.542 3.552,3.74 0.313,0.198 10 false z15 3.313,3.344 3.469,3.542 0.156,0.198 10 false 6 3.313,3.99 3.469,4.188 0.156,0.198 10 false 7 4.104,3.542 4.354,3.802 0.25,0.26 10 false z17 2.74,5.729 3.51,5.927 0.771,0.198 10 false BFG*1 4.563,5.74 5.333,5.938 0.771,0.198 10 false BFG*1 3.271,5.625 3.583,5.823 0.313,0.198 10 false 11 5.833,4.771 6.292,4.969 0.458,0.198 10 false BFG 6.604,4.771 6.917,4.969 0.313,0.198 10 false EL 5.24,2.208 6.615,2.406 1.375,0.198 10 false High 5.25,2.406 6.479,2.604 1.229,0.198 10 false Low 5.219,2.615 6.292,2.813 1.073,0.198 10 false Flash 4.813,2.854 6.292,3.292 1.479,0.438 10 false Dimmer Switch 5.323,4.969 5.781,5.167 0.458,0.198 10 false Off 5.208,5.156 5.823,5.354 0.615,0.198 10 false Front*1 4.927,5.563 6.458,5.76 1.531,0.198 10 false Fog Light Switch 4.927,0.844 5.385,1.042 0.458,0.198 10 false I85 4.938,0.99 6.604,2.052 1.667,1.063 10 false Main Body ECU (Multiplex Network Body ECU) 1.115,7.5 2.563,8 1.448,0.5 10 false Steering Sensor 3.323,7.479 4.458,8.115 1.135,0.635 10 false Steering Wheel Switch Housing 5.26,7.531 6.844,7.927 1.583,0.396 10 false Turn Signal Switch 4.104,4.198 4.354,4.458 0.25,0.26 10 false z17 4.104,6.49 4.354,6.75 0.25,0.26 10 false z17 3.25,4.188 3.563,4.385 0.313,0.198 10 false z15 3.25,6.49 3.563,6.688 0.313,0.198 10 false z15 5.219,5.354 5.833,5.552 0.615,0.198 10 false Rear 6.271,4.771 6.885,4.969 0.615,0.198 10 false B 3.25,5.823 3.563,6.021 0.313,0.198 10 false z15 4.104,5.823 4.354,6.083 0.25,0.26 10 false z17 3.271,6.292 3.521,6.583 0.25,0.292 10 false 12 2.979,6.385 3.594,6.583 0.615,0.198 10 false B 4.573,6.396 5.188,6.594 0.615,0.198 10 false B 4.146,3.323 4.656,3.75 0.51,0.427 10 false 1 0.615,8.302 2.229,8.552 1.615,0.25 10 false *1: w/ Fog Light 4.146,3.99 4.656,4.417 0.51,0.427 10 false 6 4.167,5.625 4.677,6.052 0.51,0.427 10 false 4 4.125,6.292 4.635,6.719 0.51,0.427 10 false 13

E445668E04
0.323,3.25 0.635,3.448 0.313,0.198 10 false IC 2.667,4.302 3.104,4.646 0.438,0.344 10 false A 4.26,4.313 4.792,4.604 0.531,0.292 10 false A 6.083,1.427 6.24,1.625 0.156,0.198 10 false T 2.667,5.063 2.823,5.26 0.156,0.198 10 false T 4.271,5.063 4.427,5.26 0.156,0.198 10 false T 5.719,1.417 5.875,1.615 0.156,0.198 10 false A 6.406,1.417 6.563,1.615 0.156,0.198 10 false H 4.26,5.823 4.417,6.021 0.156,0.198 10 false H 2.646,5.823 2.802,6.021 0.156,0.198 10 false H 6.698,1.417 7.01,1.615 0.313,0.198 10 false EL 5.083,1.656 5.698,1.854 0.615,0.198 10 false AUTO 5.156,2.135 5.771,2.333 0.615,0.198 10 false Tail 5.094,2.604 5.708,2.802 0.615,0.198 10 false Head 4.448,2.875 5.854,3.354 1.406,0.479 10 false Light Control Switch 4.25,6.99 4.563,7.188 0.313,0.198 10 false EL 2.594,6.979 2.906,7.177 0.313,0.198 10 false EL 3.01,4.208 3.167,4.406 0.156,0.198 10 false 5 2.958,6.896 3.271,7.094 0.313,0.198 10 false 13 3,5.729 3.156,5.927 0.156,0.198 10 false 4 3,4.979 3.156,5.177 0.156,0.198 10 false 3 0.99,7.708 2.635,8.042 1.646,0.333 10 false Steering Sensor 3,7.719 4,8.26 1,0.542 10 false Steering Wheel Switch Housing 5.031,7.698 6.5,7.979 1.469,0.281 10 false Turn Signal Switch 2.927,4.406 3.198,4.646 0.271,0.24 10 false z15 2.927,5.177 3.198,5.417 0.271,0.24 10 false z15 2.927,5.938 3.198,6.177 0.271,0.24 10 false z15 2.917,7.094 3.188,7.333 0.271,0.24 10 false z15 3.781,4.406 4.094,4.604 0.313,0.198 10 false z17 3.781,5.177 4.094,5.375 0.313,0.198 10 false z17 3.781,5.938 4.094,6.135 0.313,0.198 10 false z17 3.781,7.083 4.094,7.281 0.313,0.198 10 false z17 3.802,4.208 4.115,4.406 0.313,0.198 10 false 10 3.813,4.979 4.125,5.177 0.313,0.198 10 false 14 3.854,5.74 4.167,5.938 0.313,0.198 10 false 5 3.802,6.875 4.115,7.073 0.313,0.198 10 false 12

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.

Enter the following menus: Chassis / Steering Angle Sensor / Data List.


b.

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: Front fog light switch off
ON: Front fog light switch on 		w/ Fog Light
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.

Enter the following menus: Body Electrical / Main Body / Data List.


b.

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

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Diagnostic Note
Light Control Switch (HEAD) Light control switch head position signal 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
E367361C34
1.229,0.583 1.729,0.833 0.5,0.25 4.615,0.771 5.115,1.021 0.5,0.25 1.563,2.167 1.625,1.75 true 5.698,1.99 5.885,1.479 true 0.281,0.292 0.594,0.49 0.313,0.198 10 false *a 1.354,0.604 1.667,0.802 0.313,0.198 10 false I229 4.76,0.802 5.073,1 0.313,0.198 10 false z15 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
I229-7 (HEAD) - z15-4 (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 I85 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
I229-7 (HEAD) - I85-26 (HEAD) Always Below 1 Ω
I229-7 (HEAD) - Body ground Always 10 kΩ or higher
I85-26 (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