DTC B243D: Left Low Beam Fan Malfunction; DTC B243E: Right Low Beam Fan Malfunction [10/2014 - 09/2017]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Turn the engine switch on (IG).
2. Turn on the headlights using the headlight dimmer switch.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Proceed to
   DTCs B243D or B243E are not output
   DTC B243D is output
   DTC B243E is output

Result: 

DTCs B243D or B243E are not output 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2014 - 09/2017] 

Result: 

DTC B243E is output 

See step  6

Result: 

DTC B243D is output 

See step  3

1. Temporarily replace the headlight unit LH with a new or normally functioning one.

   Refer to DISASSEMBLY [10/2014 - 09/2017]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

1. Turn the engine switch on (IG).
2. Inspect the light using the dimmer switch.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Proceed to
   DTC B243D output does not occur
   DTC B243D output occurs

Result: 

DTC B243D output does not occur 

END (HEADLIGHT UNIT LH WAS DEFECTIVE) 

Result: 

DTC B243D output occurs 

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [10/2014 - 09/2017] 

1. Temporarily replace the headlight unit RH with a new or normally functioning one.

   Refer to DISASSEMBLY [10/2014 - 09/2017]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Turn the engine switch on (IG).
2. Inspect the light using the dimmer switch.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2014 - 09/2017]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Proceed to
   DTC B243E output does not occur
   DTC B243E output occurs

Result: 

DTC B243E output does not occur 

END (HEADLIGHT UNIT RH WAS DEFECTIVE) 

Result: 

DTC B243E output occurs 

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [10/2014 - 09/2017]