Last Modified: 11-20-2023 |
6.11:8.1.0 |
Doc ID: RM100000001KY85 |
Model Year Start: 2020 |
Model: Camry HV |
Prod Date Range: [09/2019 -
] |
Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): B242E; Open in IG Circuit; 2020 - 2024 MY Camry HV [09/2019 - ] |
DTC
|
B242E
|
Open in IG Circuit
|
DESCRIPTION
The headlight ECU sub-assembly operates using the power source voltage input from the IG terminal and ECUB terminal.
The IG terminal power source voltage is supplied by turning the IG1-NO. 1 relay to ON.
The headlight ECU sub-assembly receives power switch on (IG) signals from the main body ECU (multiplex network body ECU) via CAN communication, compares the power switch on (IG) signal and the power source voltage supply condition of the IG terminal and monitors the result.
AFS
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
DTC Output from
|
B242E
|
Open in IG Circuit
|
Detection condition:
-
The power switch is on (IG).
Malfunction status:
-
When the IG terminal power source voltage is 0 V (power switch off), IG ON signals from the main body ECU (multiplex network body ECU) via CAN communication are continuously received
|
-
Headlight ECU sub-assembly LH
-
Harness or connector
|
AFS
|
AFS (Sub)
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
DTC Output from
|
B242E
|
Open in IG Circuit
|
Detection condition:
-
The power switch is on (IG).
Malfunction status:
-
When the IG terminal power source voltage is 0 V (power switch off), IG ON signals from the main body ECU (multiplex network body ECU) via CAN communication are continuously received
|
-
Headlight ECU sub-assembly RH
-
Harness or connector
|
AFS (Sub)
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Inspect the fuses for circuits related to this system before performing the following procedure.
-
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
Click here
PROCEDURE
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / AFS or AFS (Sub) / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > AFS > Clear DTCs
Body Electrical > AFS (Sub) > Clear DTCs
NEXT
|
|
|
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Wait 10 seconds or more.
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / AFS or AFS (Sub) / Trouble Codes.
(f) Check for DTCs.
Body Electrical > AFS > Trouble Codes
Body Electrical > AFS (Sub) > Trouble Codes
OK:
DTC B242E is not output.
Result
|
Proceed to
|
OK
|
A
|
NG (DTC output from headlight ECU sub-assembly LH)
|
B
|
NG (DTC output from headlight ECU sub-assembly RH)
|
C
|
B
|
|
|
3.
|
INSPECT HEADLIGHT ECU SUB-ASSEMBLY LH (IG TERMINAL VOLTAGE)
|
*a
|
Front view of wire harness connector
(to Headlight ECU Sub-assembly LH)
|
(a) Disconnect the A79 headlight ECU sub-assembly LH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A79-4 (IG) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - BODY GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A79-12 (GND) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
5.
|
INSPECT HEADLIGHT ECU SUB-ASSEMBLY RH (IG TERMINAL VOLTAGE)
|
*a
|
Front view of wire harness connector
(to Headlight ECU Sub-assembly RH)
|
(a) Disconnect the A80 headlight ECU sub-assembly RH connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A80-4 (IG) - Body ground
|
Power switch on (IG)
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY RH - BODY GROUND)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A80-12 (GND) - Body ground
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|