Exterior Lights Symptom Troubleshooting - LED headlight does not come on

LED headlight does not come on 

1. DTC check

   -1. Connect the HDS to the data link connector (DLC) .

   -2. Check for DTCs with the HDS.

   DTC Description	DTC
   B1085 Head Light Low Light Source Abnormality

   Is DTC B1085 indicated?

   YES 

   Go to body control module DTC B1085 troubleshooting .

   NO 

   Go to step 2.

2. Combination light switch HEADLIGHT position check

   -1. Turn the combination light switch ON.

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Headlight Switch (HEADLIGHT)	ON

   Is data list values correct?

   YES 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.

   NO 

   Go to step 3.

3. Combination light switch check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Do the combination light switch test .

   Is the switch OK?

   YES 

   Go to step 4.

   NO 

   Replace the combination light switch .

4. Open wire check (H/L ON SW line) 1

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) modeCombination light switch 12P connector: disconnected
   Test point 1	Combination light switch 12P connector (female terminals) No. 7:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there battery voltage?

   YES 

   Go to step 5.

   NO 

   Go to step 6.

5. Open wire check (COMBI SW GND(LT) line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) modeCombination light switch 12P connector: disconnected
   Test point 1	Combination light switch 12P connector (female terminals) No. 6:
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The COMBI SW GND(LT) wire is OK. Faulty combination light switch; do the combination light switch test .

   NO 

   Repair an open or high resistance in the wire.

6. Open wire check (H/L ON SW line) 2

   -1. Disconnect the following connector.

   Body control module connector C (28P)

   -2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) modeCombination light switch 12P connector: disconnected
   Test point 1	Body control module connector C (28P) No. 9
   Test point 2	Combination light switch 12P connector (female terminals) No. 7:

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The H/L ON SW wire is OK. Replace the body control module .

   NO 

   Repair an open or high resistance in the wire.