With CONSULT

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.







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






DIAGNOSTIC PROCEDURE