Diagnostic Trouble Code Tests: Notes

CAUTION: Ensure ignition is off before disconnecting harness connector from any component or control module. If ECM replacement is instructed in following testing, always ensure ECM connectors and ground circuits are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction.

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION in SELF-DIAGNOSTICS - INTRODUCTION - MIATA, MILLENIA, MPV & PROTEGE article. For wiring diagram, see appropriate WIRING DIAGRAMS article. Always perform appropriate drive cycle test after repair is performed to verify DTC does not reset. See DRIVE CYCLE PROCEDURES in SELF-DIAGNOSTICS - INTRODUCTION - MIATA, MILLENIA, MPV & PROTEGE article.

NOTE: For following tests, manufacturer recommends use of New Generation Star (NGS) tester. NGS tester is referred to as scan tool. For more information, see SELF-DIAGNOSTICS - INTRODUCTION - MIATA, MILLENIA, MPV & PROTEGE article.