RM38T0EC _95 ADAS / AD _112293 ADVANCED DRIVER ASSISTANCE SYSTEM _0510961 AUTOMATIC HIGH BEAM SYSTEM J

ADVANCED DRIVER ASSISTANCE SYSTEM  AUTOMATIC HIGH BEAM SYSTEM  Automatic High Beam Switch Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) detects the ON/OFF signal of the automatic high beam switch (turn signal switch).

WIRING DIAGRAM

E400733E18
1.5,0.948 1.854,1.156 0.354,0.208 10 false 2 1.698,0.958 2.052,1.167 0.354,0.208 10 false E 2.865,0.948 3.219,1.156 0.354,0.208 10 false +B 3.156,0.948 3.51,1.156 0.354,0.208 10 false 5 1.667,1.573 2.021,1.781 0.354,0.208 10 false I52 1.656,1.74 3.385,2.198 1.729,0.458 10 false Auto High Beam Switch 4.99,1.844 5.604,2.063 0.615,0.219 10 false I85 4.979,2.021 6.635,2.448 1.656,0.427 10 false Main Body ECU (Multiplex Network Body ECU) 5.313,0.938 5.667,1.146 0.354,0.208 10 false AHBI 5.948,0.646 6.302,0.854 0.354,0.208 10 false +B 5.063,0.938 5.417,1.146 0.354,0.208 10 false 14

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.

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 449 107
OK:

Normal conditions listed above are displayed.



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereADAS / AD>ADVANCED DRIVER ASSISTANCE SYSTEM>AUTOMATIC HIGH BEAM SYSTEM>PROBLEM SYMPTOMS TABLE


NG

2.INSPECT AUTO HIGH BEAM SWITCH
2.INSPECT AUTO HIGH BEAM SWITCH

Click hereVehicle Exterior>LIGHTING (EXT)>HEADLIGHT DIMMER SWITCH>INSPECTION

Result:
Proceed to
OK
NG



OK

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

NG

REPLACE AUTO HIGH BEAM SWITCH

Click hereADAS / AD>ADVANCED DRIVER ASSISTANCE SYSTEM>AUTOMATIC HIGH BEAM MAIN SWITCH>REMOVAL


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

Disconnect the F8 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
I52-5 (+B) - I85-14 (AHBI) Always Below 1 Ω
I52-5 (+B) - Body ground Always 10 kΩ or higher
I52-2 (E) - Body ground Always Below 1 Ω



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