DTC C1203/53 ECM Communication Circuit Malfunction: Description
WARNING: This page is about a different car, the 2009 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
A new skid control ECU is supplied without engine variation data. Until it is recognized by the ECU, DTC C1203/53 remains stored. By entering test mode, recognition of engine variation data is automatically conducted, and DTC C1203/53 is cleared automatically.
DTC DETECTION CONDITION CHART
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1203/53 | When all of following conditions detected:
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