RM3660EC _95 ADAS / AD _139716 ADVANCED DRIVER ASSISTANCE SYSTEM _0584195 AUTOMATIC HIGH BEAM SYSTEM(except NR Series Engine) J

ADVANCED DRIVER ASSISTANCE SYSTEM  AUTOMATIC HIGH BEAM SYSTEM(except NR Series Engine)  Automatic High Beam Switch Circuit  


DESCRIPTION

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

WIRING DIAGRAM

E444786E10
1.5,0.979 1.854,1.188 0.354,0.208 10 false 2 1.698,0.979 2.052,1.188 0.354,0.208 10 false E 2.865,0.979 3.219,1.188 0.354,0.208 10 false +B 3.156,0.979 3.51,1.188 0.354,0.208 10 false 5 1.667,1.563 2.021,1.771 0.354,0.208 10 false I52 1.667,1.729 3.479,2.115 1.813,0.385 10 false Auto High Beam Switch 4.979,1.906 5.594,2.125 0.615,0.219 10 false I85 4.99,2.073 6.635,2.5 1.646,0.427 10 false Main body ECU (multiplex network body ECU) 5.333,0.99 5.688,1.198 0.354,0.208 10 false AHBI 5.979,0.656 6.333,0.865 0.354,0.208 10 false +B 5.042,0.979 5.396,1.188 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.*

*: w/ Smart Entry and Start System



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 Automatic high beam switch signal OFF or ON OFF: Automatic high beam switch not pressed
ON: Automatic 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 (except NR Series Engine)>PROBLEM SYMPTOMS TABLE


NG

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

Click hereADAS / AD>ADVANCED DRIVER ASSISTANCE SYSTEM>AUTOMATIC HIGH BEAM MAIN SWITCH (except NR Series Engine)>INSPECTION

Result:
Proceed to
OK
NG



OK

3.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 hereADAS / AD>ADVANCED DRIVER ASSISTANCE SYSTEM>AUTOMATIC HIGH BEAM MAIN SWITCH (except NR Series Engine)>REMOVAL


3.CHECK HARNESS AND CONNECTOR (AUTO HIGH BEAM SWITCH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)
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
I52-5 (+B) - I85-14 (AHBI) Always Below 1 Ω
I52-5 (+B) or I85-14 (AHBI) - 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)

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

for RHD: Click here


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR