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Diagnostic Tests: Notes

CAUTION: When substituting a known-good PCM, immobilizer code must be rewritten to replacement known-good PCM using a Honda PGM tester, or engine will not start.
NOTE: When substituting a known-good PCM, immobilizer code must be also be substituted to replacement PCM or engine will not start. See SUBSTITUTING PCM under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - INTRODUCTION article.
NOTE: Different Honda models are equipped with either an Engine Control Module (ECM) or a Powertrain Control Module (PCM). ECM will be referred to as a PCM.
NOTE: When there is no DTC stored, MIL will stay on if SCS Service Connector is connected to 2-pin service check connector and ignition is on. See Figure .

When directed by testing procedure to install test equipment, see TEST EQUIPMENT in SELF-DIAGNOSTICS - INTRODUCTION article.