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Honda Fit/Jazz - DTC Troubleshooting: P0603 (0), P0604 (0), P0605 (0) (With ETCS)
Online Honda Fit/Jazz 2002-2005 Workshop repair manual used by professionals.
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Snip from the Manual
DTC Troubleshooting: P0603 (0), P0604 (0), P0605 (0)
DTC P0603: ECM Internal Control Module Keep Alive Memory (KAM) ErrorDTC P0605: ECM Internal Control Module Read Only Memory (ROM) Error
1.Turn the ignition switch ON (II).
2.Do the DTC CLEAR in the CLEAR MENU with the HDS.
3.Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.
Is DTC P0603, P0604 and/or P0605 indicated?
YES - Substitute a known-good ECM and recheck. If symptom/indication goes away, replace the original ECM.n
NO - Intermittent failure, system is OK at this time.n
time. n