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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting - Testing & Troubleshooting (Except Hybrid) >> Symptom Troubleshooting >> Exterior Lights Symptom Troubleshooting - LED headlight does not come on

Exterior Lights Symptom Troubleshooting - LED headlight does not come on

LED headlight does not come on 

  1. DTC check 1

    -1. Clear the DTCs with the HDS.

    -2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

    -3. Wait for at least 10 seconds.

    -4. Check for Relay Control Module DTCs with the HDS.

    DTC (Relay Control Module)

    DTC Description DTC
       

    Are any DTCs indicated?

    YES 

    Go to the indicated DTC's troubleshooting .

    NO 

    Go to step 2.

  2. DTC check 2

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

    -2. Check for Body Control Module DTCs with the HDS.

    DTC Description DTC
       

    Are any DTCs indicated?

    YES 

    Go to the indicated DTC's troubleshooting .

    NO 

    Go to step 3.

  3. 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 4.

  4. 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 5.

    NO 

    Replace the combination light switch .

  5. 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
    GHH427592Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Go to step 6.

    NO 

    Go to step  7.

  6. 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
    GHH427594Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

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

    NO 

    Repair an open or high resistance in the wire.

  7. 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: disconnectedBody control module connector C (28P): disconnected
    Test point 1 Combination light switch 12P connector (female terminals) No. 7:
    Test point 2 Body control module connector C (28P) No. 9
    GHH427596Courtesy 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.