DTC C1203/59: ECM Communication Circuit Malfunction; DTC C1270/88: Initialization Incomplete (Test Mode DTC): Procedure
- CHECK PART NUMBER (ECM)
- Check that the part number of the installed ECM is correct.
OK
ECM installed in the vehicle has the correct part number.
NG → See step 5
OK: Go to next step
- Check that the part number of the installed ECM is correct.
- CLEAR AND STORE SYSTEM INFORMATION
- Clear the system information. Refer to CALIBRATION .
- Store the system information. Refer to CALIBRATION .
NEXT: Go to next step
- RECONFIRM DTC
- Clear the DTCs. Refer to DTC CHECK / CLEAR .
- Check if the same DTC is recorded. Refer to DTC CHECK / CLEAR
.
Result
Result Proceed to DTC (C1203/59) is not output A DTC (C1203/59) is output B
B → See step 6
A → See step 4
- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to DIAGNOSIS SYSTEM
- REPLACE ECM (for 2UR-GSE). Refer to REMOVAL
- REPLACE SKID CONTROL ECU. Refer to REMOVAL