2000 Honda Odyssey CargoFACTORY OEM SERVICE PROCEDURE

'01 Model

  1. Turn the ignition switch ON (II).
  2. Measure voltage between PCM connector terminals A26 and E20.
    Fig 1: Measuring Voltage Between PCM Connector Terminals A26 & E20
    G01511690Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 1.0 V? 

    1. YES:  Go to step 3.
    2. NO:  Go to step  6.
  3. Start the engine.
  4. Turn the steering wheel to the full lock position.
  5. Measure voltage between PCM connector terminals A26 and E20.

    Is there battery voltage? 

    1. YES:  The PSP switch signal is OK.
    2. NO:  Go to step  13.
  6. Turn the ignition switch OFF.
  7. Disconnect the PSP switch 2P connector.
  8. Turn the ignition switch ON (II).
  9. At the harness side, connect PSP switch 2P connector terminals No. 1 and No. 2 with a jumper wire.
    Fig 2: Connecting PSP Switch 2P Connector Terminals No. 1 & No. 2 With A Jumper Wire
    G01511691Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Measure voltage between PCM connector terminals A26 and E20.

    Is there less than 1.0 V? 

    1. YES:  Replace the PSP switch.
    2. NO:  Go to step 11.
  11. Turn the ignition switch OFF.
  12. Check for continuity between PSP switch 2P connector No. 2 terminal and body ground.
    Fig 3: Checking For Continuity Between PSP Switch 2P Connector No. 2 Terminal & Body Ground
    G01511692Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES:  Repair open in the wire between the PSP switch and PCM (E20).
    2. NO:  Repair open in the wire between the PSP switch and G201.
  13. Turn the ignition switch OFF.
  14. Disconnect the PSP switch 2P connector.
  15. Turn the ignition switch ON (II).
  16. Measure voltage between PCM connector terminals A26 and E20.
    Fig 4: Measuring Voltage Between PCM Connector Terminals A26 & E20
    G01511693Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    1. YES:  Replace the PSP switch.
    2. NO:  Go to step 17.
  17. Turn the ignition switch OFF.
  18. Disconnect PCM connector E (31P).
  19. Check for continuity between body ground and PCM connector terminal E20.
    Fig 5: Checking For Continuity Between Body Ground & PCM Connector Terminal E20
    G01511694Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES:  Repair short in the wire between the PCM (E20) and the PSP switch.
    2. NO:  Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING PURPOSE ). If voltage is normal, replace the original PCM.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.