DTC 0301

The ECM consists of a microcomputer, a diagnostic test mode selector, and connectors for signal input and output and for power supply. The unit controls the engine.




DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT
3. Start engine and wait at least 30 seconds.
4. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

With Generic Scan Tools
1. Turn ignition switch "ON".
2. Start engine and wait at least 30 seconds.
3. Select "Mode 7" with GST.
4. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

Without Scan Tools
1. Turn ignition switch "ON".
2. Start engine and wait at least 30 seconds.
3. Turn ignition switch "OFF" and wait at least 10 seconds.
4. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
5. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".




FAIL-SAFE MODE
When the ECM enters the fail-safe mode, the MIL illuminates.




DIAGNOSTIC PROCEDURE