Lexus ES: Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142,U0293)
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 hybrid vehicle control ECU | 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 |
| U0293 | Lost Communication With Hybrid Vehicle Control System | Lost communication with hybrid vehicle control ECU assembly | CAN communication system |
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | Lost communication with hybrid vehicle control ECU | 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 |
| U0293 | Lost Communication With Hybrid Vehicle Control System | Lost communication with hybrid vehicle control ECU assembly | 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 power switch off.
(b) Turn the power 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 |
|---|---|
| Blind Spot Monitor Master DTCs including DTC U0232 are output. | A |
| Blind Spot Monitor Master DTCs other than DTC U0232 are output. | B |
| No DTCs are output | C |
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 troubleshooting again, even though the DTC was not output when rechecking for DTCs.
Click here
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| A |  | GO TO DTC U0232 |
| B | | GO TO CAN COMMUNICATION SYSTEM |
| C | | 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 Detection Con
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 Detection Con
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 DT
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