DESCRIPTION
INSPECTION PROCEDURE
CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)
DTC C1203/53 ECM Communication Circuit Malfunction
DESCRIPTION
The circuit is used to send TRC and VSC control information from the skid control ECU to the ECM, and engine control information from the ECM to the skid control ECU.
| DTC No. | DTC Detection Condition | Trouble Area |
| C1203/53 | Engine, drive source and destination variations that are sent from the ECM do not match the ones of the skid control ECU. | ECM |
INSPECTION PROCEDURE
| 1.CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY) |
Check that the proper ECM and brake actuator assembly (skid control ECU) are installed.
- OK:
- Proper ECUs are installed.
| | REPLACE ECUS WITH PROPER ONES |
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LEXUS IS250, IS220d / GSE20 ALE20