DTC B243D: Left Low Beam Fan Malfunction; DTC B243E: Right Low Beam Fan Malfunction [06/2015 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

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

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Result	Proceed to
   DTCs B243D or B243E are not output	A
   DTC B243D is output	B
   DTC B243E is output	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

Result: 

C 

See step  6

Result: 

B 

See step  3

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

   Refer to DISASSEMBLY [06/2015 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  5

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

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Result	Proceed to
   DTC B243D output does not occur	A
   DTC B243D output occurs	B

Result: 

A 

END (HEADLIGHT FAN LH WAS DEFECTIVE) 

Result: 

B 

REPLACE HEADLAMP LIGHT CONTROL ECU SUB-ASSEMBLY LH. Refer to  DISASSEMBLY [06/2015 - ] 

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

   Refer to DISASSEMBLY [06/2015 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

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

   Refer to DTC CHECK / CLEAR [06/2015 - 11/2018] , or refer to DTC CHECK / CLEAR [11/2018 - ]

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Result

   Result	Proceed to
   DTC B243E output does not occur	A
   DTC B243E output occurs	B

Result: 

A 

END (HEADLIGHT FAN RH WAS DEFECTIVE) 

Result: 

B 

REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH. Refer to  DISASSEMBLY [06/2015 - ]