DTC B242E: Open in IG Circuit [11/2021 - 12/2023]: Procedure

1. Clear the DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Clear DTCs 

   Body Electrical > HL AutoLeveling (Sub) > Clear DTCs 

   for Stereo Camera Type:

   Body Electrical > AFS > Clear DTCs 

   Body Electrical > AFS (Sub) > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

1. Check for DTCs.

   for Mono Camera Type:

   Body Electrical > HL AutoLeveling > Trouble Codes 

   Body Electrical > HL AutoLeveling (Sub) > Trouble Codes 

   for Stereo Camera Type:

   Body Electrical > AFS > Trouble Codes 

   Body Electrical > AFS (Sub) > Trouble Codes 

   Result

   Result	Proceed to
   B242E is not output	A
   Only B242E for headlight ECU sub-assembly LH is output	B
   Only B242E for headlight ECU sub-assembly RH is output	C

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

C 

See step  4

Result: 

B 

See step  3

Pre-procedure1

• Disconnect the A96 headlight ECU sub-assembly LH connector.

• Measure the voltage and resistance according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Switch Condition	Specified Condition
  A96-4 (IG) - Body ground	Ignition switch ON	11 to 14 V

  Standard Resistance

  Tester Connection	Condition	Specified Condition
  A96-12 (GND) - Body ground	Always	Below 1 Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Pre-procedure1

• Disconnect the A97 headlight ECU sub-assembly RH connector.

• Measure the voltage and resistance according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Switch Condition	Specified Condition
  A97-4 (IG) - Body ground	Ignition switch ON	11 to 14 V

  Standard Resistance

  Tester Connection	Condition	Specified Condition
  A97-12 (GND) - Body ground	Always	Below 1 Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None

Result: 

OK 

REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [11/2021 - 12/2022]  , or refer to  REMOVAL [12/2022 - 12/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR