DTC C1201: Engine Control System Malfunction: Procedure
- CHECK ENGINE CONTROL SYSTEM
- Check if any engine control system DTC is output. Refer to DTC CHECK / CLEAR
for 2AZ-FE or refer to DTC CHECK / CLEAR
for 2ZR-FE).
Result
Result Proceed to DTC is not output (for 2AZ-FE) A DTC is not output (for 2ZR-FE) B DTC is output (for 2AZ-FE) C DTC is output (for 2ZR-FE) D
D → See step 5
C → See step 4
B → See step 3
A → See step 2
- Check if any engine control system DTC is output. Refer to DTC CHECK / CLEAR
for 2AZ-FE or refer to DTC CHECK / CLEAR
for 2ZR-FE).
- REPLACE ECM (for 2AZ-FE). Refer to REMOVAL
- REPLACE ECM (for 2ZR-FE). Refer to REMOVAL
- INSPECT ENGINE CONTROL SYSTEM (for 2AZ-FE). Refer to DIAGNOSTIC TROUBLE CODE CHART
- INSPECT ENGINE CONTROL SYSTEM (for 2ZR-FE). Refer to DIAGNOSTIC TROUBLE CODE CHART