Lexus ES: Lost Communication with ECM / PCM "A" (U0100,U0126,U0140,U0163,U0233,U1110)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system connected to the rear television camera assembly.
HINT:
If CAN communication system DTCs are stored, they may also be stored in other systems.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | Lost Communication with ECM | CAN communication system |
| U0126 | Lost Communication with Steering Angle Sensor Module | Lost communication with steering sensor | CAN communication system |
| U0140 | Lost Communication with Body Control Module | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system |
| U0163 | Lost Communication with Navigation Control Module | Lost communication with radio receiver assembly | CAN communication system |
| U0233 | Lost Communication with Blind Spot Monitor Master Module | Lost communication with blind spot monitor sensor RH | CAN communication system |
| U1110 | Lost Communication with Intuitive Parking Assist Module | Lost communication with clearance warning ECU assembly | CAN communication system |
PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Clear the DTCs.
Chassis > Rear Camera > Clear DTCs(b) Recheck for DTCs and check that no DTCs are output.
Chassis > Rear Camera > Trouble CodesHINT:
- If CAN communication system DTCs are stored, they may also be stored in other systems.
- If the CAN communication system has been inspected and repaired in other systems, 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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| Result | Proceed to |
|---|---|
| DTCs are output | A |
| No DTCs are output | B |
| A |  | GO TO CAN COMMUNICATION SYSTEM |
| B | | USE SIMULATION METHOD TO CHECK |
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WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
When checking for DTCs, make sure that the blind spot monitor system is turned on.
Inspect the fuses for circuits related to this system before per
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