DESCRIPTION
A DTC is stored when the headlight ECU sub-assembly receives a light source malfunction signal from its respective headlight unit. The headlight ECU sub-assembly LH stores DTC B2439 or B243A.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2439 |
Headlamp LH Circuit |
headlight ECU sub-assembly LH light source malfunction |
|
- |
B243A |
Headlamp RH Circuit |
headlight ECU sub-assembly RH light source malfunction |
|
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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
1. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
2. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Operate the light control switch to turn on the low beam headlights.
(c) Check for DTCs.
Click here
OK:
DTC B2439 and B243A are not output.
Result |
Proceed to |
---|---|
OK |
A |
NG (DTC B2439 is output) |
B |
NG (DTC B243A is output) |
C |
A | ![]() |
USE SIMULATION METHOD TO CHECK
|
C | ![]() |
GO TO STEP 6 |
|
3. |
REPLACE HEADLIGHT UNIT ASSEMBLY LH |
(a) Replace the headlight unit assembly LH with a new or known good one.
|
4. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
5. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Operate the light control switch to turn on the low beam headlights.
(c) Check for DTCs.
Click here
OK:
DTC B2439 is not output.
OK | ![]() |
END (HEADLIGHT UNIT ASSEMBLY LH WAS DEFECTIVE) |
NG | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH |
6. |
REPLACE HEADLIGHT UNIT ASSEMBLY RH |
(a) Replace the headlight unit assembly RH with a new or known good one.
|
7. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
8. |
CHECK FOR DTC |
(a) Turn the ignition switch to ON.
(b) Operate the light control switch to turn on the low beam headlights.
(c) Check for DTCs.
Click here
OK:
DTC B243A is not output.
OK | ![]() |
END (HEADLIGHT UNIT ASSEMBLY RH WAS DEFECTIVE) |
NG | ![]() |
REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH |
Toyota CH-R Service Manual > Immobiliser System(w/ Smart Key System): Theft Deterrent System Communication Line High Fixation (B279A)
DESCRIPTION
If the communication line (IMI - EFIO) between the ECM and ID code box (immobiliser
code ECU) is stuck high, the ECM will store this DTC.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
B279A
...
Toyota CH-R Service Manual > Rear Wiper Motor: Inspection
INSPECTION
PROCEDURE
1. INSPECT REAR WIPER MOTOR ASSEMBLY
*a
Component without harness connected
(Rear Wiper Motor Assembly)
(a) Check that the rear wiper motor assembly operates.
NOTICE:
Check that the body ground is connected.
(1) Apply battery voltage to ...