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Home >> Honda >> 2003 >> Pilot EX >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> DTC Troubleshooting >> DTC P1607: PCM Internal Circuit Malfunction
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DTC P1607: PCM Internal Circuit Malfunction

  1. Reset the PCM (see HOW TO RESET THE PCM ).
  2. Turn the ignition switch ON (II).
  3. Wait 30 seconds.

    Is DTC P1607 indicated? 

    1. YES  -Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING ). If the symptom/indication goes away, replace the original PCM.
    2. NO  -Go to step 4.
  4. Turn the ignition switch OFF.
  5. Turn the ignition switch ON (II).
  6. Wait 10 seconds.

    Is DTC P1607 indicated? 

    1. YES  -Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING ). If the symptom/indication goes away, replace the original PCM.
    2. NO  -Intermittent failure, system is OK at this time. A low battery can cause this problem. Ask the customer if the engine had to be jump-started recently.
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