Hi-Beam Headlight Does Not Illuminate

LIGHTING: LIGHTING SYSTEM: HI-beam Headlight does not Illuminate
- HI-beam Headlight does not Illuminate

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* Make sure that the headlight LO illumination is operating normally. If not operating normally, refer to the following procedures LO-Beam Headlight Does Not Illuminate.
* First perform the communication function inspections in HOW TO PROCEED WITH TROUBLESHOOTING to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (HEADLIGHT HI)

(a) Using the Techstream, perform the Active Test.

Body No. 5





OK:

Headlight HI condition is switched by Active Test.

NG -- CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK FRONT LIGHT ECU - HEADLIGHT)
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM (HEADLIGHT DIMMER SWITCH)

(a) Using the Techstream, read the Data List.

Combination Switch





OK:

Condition sign can be displayed.

NG -- REPLACE HEADLIGHT DIMMER SWITCH Removal
OK -- Continue to next step.

3. CHECK WINDSHIELD WIPER SWITCH (OPERATION)

(a) Temporarily replace the windshield wiper switch with a new or normally functioning one Removal.

(b) Check the HI-beam headlight operation.

OK:

HI-beam headlight operation is normal.

NG -- CHECK MULTIPLEX NETWORK FRONT LIGHT ECU (OPERATION)

OK -- END (REPLACE WINDSHIELD WIPER SWITCH) Removal

4. CHECK MULTIPLEX NETWORK FRONT LIGHT ECU (OPERATION)

(a) Temporarily replace the multiplex network front light ECU with a new or normally functioning one.

(b) Check the HI-beam headlight operation.

OK:

HI-beam headlight operation is normal.

NG -- REPLACE MAIN BODY ECU

OK -- END (REPLACE MULTIPLEX NETWORK FRONT LIGHT ECU)

5. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK FRONT LIGHT ECU - HEADLIGHT)





(a) Disconnect the B14 ECU connector.

(b) Disconnect the B1 or B11 light connector.

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

Standard resistance:

for LH
for RH










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. CHECK HEADLIGHT (OPERATION)

(a) Temporarily replace the headlight with a new or normally functioning one Removal.

(b) Check the HI-beam headlight operation.

OK:

HI-beam headlight operation is normal.

NG -- REPLACE MULTIPLEX NETWORK FRONT LIGHT ECU

OK -- END (REPLACE HEADLIGHT) Removal