DTC 0301

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





ON BOARD DIAGNOSIS LOGIC





DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
With Consult
(1) Turn ignition switch "ON".
(2) Select "DATA MONITOR" mode with CONSULT
(3) Start engine and run it for at least 2 seconds at idle speed.

OR

With GST
(1) Turn ignition switch "ON".
(2) Select "Mode 7" with GST.
(3) Start engine and run it for at least 2 seconds at idle speed.

OR

Without Scan Tools
(1) Turn ignition switch "ON".
(2) Start engine and run it for at least 2 seconds at idle speed.
(3) Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
(4) Perform "Diagnostic Test Mode II" (Self-diagnostic results) with ECM.





DIAGNOSTIC PROCEDURE