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

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 5 seconds.
(4) Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.






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






DIAGNOSTIC PROCEDURE