DTC B1439:86 [ADAPTIVE LED HEADLIGHTS CONTROL MODULE]
id1502c1001000
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Description |
Communication error with front combination light (RH) |
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Detection condition
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• The adaptive LED headlight control module received error signals from the front combination light (RH) for 5 s or more with the ignition switched ON (engine off or on).
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Fail-safe
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• When the setting is on using the personalization feature, the headlights HI turn on. (When setting is off using personalization feature, headlight HI illumination on/off depends on control by front body control module (FBCM))
• The headlight leveling actuator is stopped at the position when the malfunction is determined.
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Possible cause
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• Front combination light (RH) malfunction
• Adaptive LED headlights control module malfunction
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System wiring diagram
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Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY IF MALFUNCTIONING LOCATION IS FRONT COMBINATION LIGHT (RH) DEPENDING ON REPEATABILITY
• Clear the adaptive LED headlights control module DTCs using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Retrieve the adaptive LED headlights control module DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the front combination light (RH), then go to the next step.
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No
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Go to Step 3.
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2
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the adaptive LED headlights control module DTCs using the M-MDS.
• Switch the ignition ON (engine off or on) and wait for 5 s or more.
• Retrieve the adaptive LED headlights control module DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the adaptive LED headlights control module, then go to the next step.
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No
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Go to the next step.
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3
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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