Toyota Camry (XV70): Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may also be stored for other systems.
Blind Spot Monitor Master|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U0100 | Lost Communication with ECM / PCM "A" |
Lost communication with ECM |
CAN communication system |
|
U0125 | Lost Communication with Yaw Rate Sensor Module |
Lost communication with airbag sensor assembly |
CAN communication system |
|
U0126 | Lost Communication with Steering Angle Sensor Module |
Lost communication with steering sensor |
CAN communication system |
|
U0129 | Lost Communication with Brake System Control Module |
Lost communication with brake system |
CAN communication system |
|
U0142 | Lost Communication with Body Control Module "B" |
Lost communication with main body ECU |
CAN communication system |
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U0100 | Lost Communication with ECM / PCM "A" |
Lost communication with ECM |
CAN communication system |
|
U0125 | Lost Communication with Yaw Rate Sensor Module |
Lost communication with airbag sensor assembly |
CAN communication system |
|
U0126 | Lost Communication with Steering Angle Sensor Module |
Lost communication with steering sensor |
CAN communication system |
|
U0129 | Lost Communication with Brake System Control Module |
Lost communication with brake system |
CAN communication system |
|
U0142 | Lost Communication with Body Control Module "B" |
Lost communication with main body ECU |
CAN communication system |
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
PROCEDURE
| 1. |
CHECK DTC |
(a) Turn the engine switch off.
(b) Turn the engine switch on (IG).
(c) Recheck for DTCs and check if the same DTC is output again.
Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTCs are output | A |
|
No DTCs are output | B |
HINT:
- If CAN communication system DTCs are stored, they may also be stored for other systems.
- If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
- If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.
Click here
.gif)
| A | .gif) | GO TO CAN COMMUNICATION SYSTEM |
| B |
| USE SIMULATION METHOD TO CHECK
|
READ NEXT:
Lost Communication with Blind Spot Monitor Slave Module (U0232)
DESCRIPTION This DTC is stored when the blind spot monitor sensor RH judges that there is a communication problem with the blind spot monitor sensor LH.
DTC No. Detection Item
DTC Detecti
Lost Communication with Blind Spot Monitor Master Module (U0233)
DESCRIPTION This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH.
DTC No. Detection Item
DTC Detecti
Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors. Blind Spot Monitor Master
SEE MORE:
If a warning light turns
on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warnin
VSC does not Operate or VSC does not Operate Correctly
DESCRIPTION When TRAC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred.
When a communication malfunction with the ECM is detected, TRAC and VSC are disabled. Also, TRAC and VSC are disabled when a DTC is
