RM35X0E _59 Vehicle Exterior _079256 LIGHTING (EXT) _0396321 LIGHTING SYSTEM(w/ Headlight ECU) J

LIGHTING (EXT)  LIGHTING SYSTEM(w/ Headlight ECU)  Automatic High Beam System does not Operate or Operation Indicator does not Illuminate  


DESCRIPTION

The main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera.

WIRING DIAGRAM

E367859E20
1.083,5.354 3,5.583 1.917,0.229 10 false : CAN Communication Line 0.385,4.104 2.302,4.333 1.917,0.229 10 false Forward Recognition Camera 0.375,2.74 2.292,2.969 1.917,0.229 10 false Combination Meter Assembly 2.333,1.677 4.25,1.906 1.917,0.229 10 false Auto High Beam Switch 2.344,1.531 2.781,1.802 0.438,0.271 10 false N49 2,1.031 2.438,1.302 0.438,0.271 10 false 2 2.167,1.031 2.604,1.302 0.438,0.271 10 false E 3.781,1.042 4.219,1.313 0.438,0.271 10 false +B 4.063,1.031 4.5,1.302 0.438,0.271 10 false 5 5.188,1.021 5.625,1.292 0.438,0.271 10 false 26 5.427,1.021 5.865,1.292 0.438,0.271 10 false AHBI 5.979,0.708 6.302,0.938 0.323,0.229 10 false +B 5.135,4.115 5.573,4.385 0.438,0.271 10 false N19 5.135,4.26 6.771,4.729 1.635,0.469 10 false Main Body ECU (Multiplex Network Body ECU)

CAUTION / NOTICE / HINT

NOTICE:
·

First, confirm that there is no malfunction in the front radar sensor system.

Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT RADAR SENSOR SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING

·

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

·

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

·

Before troubleshooting, make sure that the low beam headlights and high beam headlights operate normally.

·

If the windshield glass is dirty, fogged up or has an oily film, the forward recognition camera may not operate properly, affecting the operation of systems that use the forward recognition camera.

·

When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

·

If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

for Sequential Recognition: Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA>ADJUSTMENT (SEQUENTIAL RECOGNITION)

for One Time Recognition: Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA>ADJUSTMENT (ONE TIME RECOGNITION)



PROCEDURE

1.CHECK AUTOMATIC HIGH BEAM INDICATOR
a.

Check the operation of the automatic high beam indicator.

i.

Turn the engine switch on (IG).


ii.

Turn the light control switch to the AUTO or HEAD position.


iii.

Cover the automatic light control sensor to turn the low beam headlights on.


iv.

Move the dimmer switch to the High position.


v.

Press the auto high beam switch.



Result:
Result Proceed to
OK (The automatic high beam indicator and the auto high beam switch indicator illuminate) A
NG (Automatic high beam indicator does not illuminate) B
NG (Auto high beam switch indicator does not illuminate) C
NG (Automatic high beam indicator and auto high beam switch indicator do not operate) D



A

2.READ VALUE USING GTS

B

4.READ VALUE USING GTS

C

GO TO OTHER PROBLEM (Proceed to Automatic High Beam Switch Indicator does not Come ON)

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (w/ Headlight ECU)>Automatic High Beam Switch Indicator does not Come ON


D

6.READ VALUE USING GTS
2.READ VALUE USING GTS
E367861C01
0.427,0.74 0.625,0.74 0.625,0.74 0.927,0.906 true 2.167,1.281 2.5,1.833 2.5,1.833 2.74,1.833 true 0.25,0.667 0.563,0.865 0.313,0.198 10 false *2 2.792,1.74 3.104,1.938 0.313,0.198 10 false *1 1.49,1.198 1.802,1.396 0.313,0.198 10 false *a
*1 Forward Recognition Camera
(Automatic High Beam Sensor)
*2 Work Light or Equivalent
*a 100 mm (3.94 in.) or less


a.

Shine a light on the automatic high beam sensor.

HINT:

If troubleshooting is being performed in a bright area, such as outside on a sunny day, it will not be necessary to perform this step.



b.

Connect the GTS to the DLC3.


c.

Turn the engine switch on (IG).


d.

Turn the GTS on.


e.

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


f.

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

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -
Body Electrical > Main Body > Data List
Tester Display
Auto H Beam STS0
50003 123 169
OK:

"Daytime" is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS

NG

REPLACE FORWARD RECOGNITION CAMERA

Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA>REMOVAL


3.READ VALUE USING GTS
E367862C01
1.667,1.229 1.917,1.771 1.917,1.771 2.094,1.771 true 1,0.854 1.313,1.052 0.313,0.198 10 false *a 0.969,1.51 1.281,1.708 0.313,0.198 10 false *a 2.365,0.875 2.677,1.073 0.313,0.198 10 false *b 2.146,1.688 2.458,1.885 0.313,0.198 10 false *1
*1 Cardboard or Equivalent Object
*a 150 mm (5.91 in.) or more
*b 3 mm (0.118 in.) or more


a.

Cover the automatic high beam sensor with an opaque object, such as cardboard.

NOTICE:
·

Make sure that there is no clearance between the cardboard or equivalent object and the area of the windshield glass in front of the automatic high beam sensor.

·

If there is any clearance, light may shine on the automatic high beam sensor and the value of the Data List will not change.




b.

Connect the GTS to the DLC3.


c.

Turn the engine switch on (IG).


d.

Turn the GTS on.


e.

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


f.

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

HINT:

As it may take time for the values in the Data List to change, wait at least 10 seconds before reading the Data List.


Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -
Body Electrical > Main Body > Data List
Tester Display
Auto H Beam STS0
50003 123 169
OK:

"Speed" is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE FORWARD RECOGNITION CAMERA

Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA>REMOVAL


4.READ VALUE USING GTS
a.

Using the GTS, read the Data List.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM (w/ Headlight ECU)>DATA LIST / ACTIVE TEST

Chassis > Front Recognition Camera > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Front Recognition Camera High Temperature 2 Whether high temperature malfunction of forward recognition camera exists or not Not High Temperature or High Temperature Not High Temperature: Approximately 65°C (149°F) or less
High Temperature: Approximately 65°C (149°F) or higher 		If this item is "High Temperature", the automatic high beam system will be temporarily unavailable. If this does not improve even if the inside of the vehicle is left cooled for at least 10 minutes, the forward recognition camera may be malfunctioning.
HINT:

In summertime, the windshield glass may reach 100°C (212°F) or higher


Chassis > Front Recognition Camera > Data List
Tester Display
Front Recognition Camera High Temperature 2
50003 430 13
OK:

Normal condition listed above is displayed.


HINT:

When "High Temperature" is displayed, move the vehicle to a cool area and turn the engine switch off to allow the temperature of the front recognition camera to decrease.



Result:
Proceed to
OK
NG



OK

5.PERFORM ACTIVE TEST USING GTS

NG

END (THE SYSTEM STOPPED OPERATING DUE TO HIGH TEMPERATURES)

5.PERFORM ACTIVE TEST USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Combination Meter / Active Test.


e.

Perform the Active Test according to the display on the GTS.

Body Electrical > Combination Meter > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Automatic High Beam Indicator (Green) Automatic high beam indicator OFF or ON -
Body Electrical > Combination Meter > Active Test
Tester Display
Automatic High Beam Indicator (Green)
50004 409 35
OK:

The automatic high beam indicator illuminates and turns off.



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPLACE COMBINATION METER ASSEMBLY

Click hereVehicle Interior>METER / GAUGE / DISPLAY>COMBINATION METER>REMOVAL


6.READ VALUE USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

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


e.

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

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Auto High Beam Main Switch Auto high beam switch signal OFF or ON OFF: Auto high beam switch not pressed
ON: Auto high beam switch pressed 		-
Body Electrical > Main Body > Data List
Tester Display
Auto High Beam Main Switch
50003 123 274
OK:

Normal conditions listed above are displayed.



Result:
Proceed to
OK
NG



OK

7.READ VALUE USING GTS

NG

8.INSPECT AUTO HIGH BEAM SWITCH
7.READ VALUE USING GTS
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

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


e.

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

Body Electrical > Main Body > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Auto H Beam STS0 Automatic high beam sensor current state Undetec, CAM NA, No sens, Hlight, Taillgt, Speed, Daytime, Village, Malfunc, Delay, Aim Lmt, SAE Mod, Undefin or LIN Err Condition can be displayed -
Body Electrical > Main Body > Data List
Tester Display
Auto H Beam STS0
50003 123 169
OK:

"Daytime" or "Speed" is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPLACE FORWARD RECOGNITION CAMERA

Click hereEngine / Hybrid System>CRUISE CONTROL>FRONT CAMERA>REMOVAL


8.INSPECT AUTO HIGH BEAM SWITCH
a.

Remove the auto high beam switch.

Click here


b.

Inspect the auto high beam switch.

Click hereVehicle Exterior>LIGHTING (EXT)>AUTOMATIC HIGH BEAM MAIN SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (AUTO HIGH BEAM SWITCH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

NG

REPLACE AUTO HIGH BEAM SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>AUTOMATIC HIGH BEAM MAIN SWITCH>REMOVAL


9.CHECK HARNESS AND CONNECTOR (AUTO HIGH BEAM SWITCH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
a.

Disconnect the N49 auto high beam switch connector.


b.

Disconnect the N19 main body ECU (multiplex network body ECU) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N49-5 (+B) - N19-26 (AHBI) Always Below 1 Ω
N49-5 (+B) or N19-26 (AHBI) - Body ground Always 10 kΩ or higher
N49-2 (E) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR