Code 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.

OR

With Generic Scan Tool
(1) Turn ignition switch "ON".
(2) Select "Mode 7" with GST.
(3) Start engine and wait at least 30 seconds.

OR

Without Scan Tool
(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.