2006 Honda CR-V EX, 2.4 RD6FACTORY OEM SERVICE PROCEDURE

PSP Switch Signal Circuit Troubleshooting

  1. Start the engine, and let it idle.
  2. Align the steering wheel straight ahead.
  3. Check the PSP SWITCH in the DATA LIST with the HDS.

    Does it indicate ON? 

    1. YES -  Go to step 4.
    2. NO -  Go to step  14.
  4. Turn the steering wheel to the full lock position.
  5. Check the PSPSW in the DATA LIST with the HDS.

    Does it change to OFF? 

    1. YES -  The PSP switch signal circuit is OK.
    2. NO -  Go to step 6.
  6. Turn the ignition switch OFF.
  7. Disconnect the PSP switch 2P connector.
  8. Start the engine.
  9. Check the PSPSW in the DATA LIST with the HDS.

    Does it change to OFF? 

    1. YES -  Replace the PSP switch.
    2. NO -  Go to step 10.
  10. Turn the ignition switch OFF.
  11. Jump the SCS line with the HDS.
  12. Disconnect ECM/PCM connector E (31P).
  13. Check for continuity between PSP switch 2P connector terminal No. 1 and body ground.
    Fig 1: Checking Continuity Between PSP Switch 2P Connector Terminal No. 1 And Body Ground
    G03674214Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES -  Repair short in the wire between the ECM/PCM (E16) and the PSP switch.
    2. NO -  Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ).
  14. Turn the ignition switch OFF.
  15. Disconnect the PSP switch 2P connector.
  16. Connect PSP switch 2P connector terminals No. 1 and No. 2 with a jumper wire, then start the engine.
    Fig 2: Connecting PSP Switch 2P Connector Terminals No. 1 And No. 2 With Jumper Wire
    G03674215Courtesy of AMERICAN HONDA MOTOR CO., INC.
  17. Check the PSPSW in the DATA LIST with the HDS.

    Does it change to ON? 

    1. YES -  Replace the PSP switch.
    2. NO -  Go to step 18.
  18. Turn the ignition switch OFF.
  19. Remove the jumper wire from the PSP switch 2P connector.
  20. Jump the SCS line with the HDS.
  21. Disconnect ECM/PCM connector E (31P).
  22. Connect PSP switch 2P connector terminal No. 1 to body ground with a jumper wire.
    Fig 3: Connecting PSP Switch 2P Connector Terminal No. 1 To Body Ground With Jumper Wire
    G03674216Courtesy of AMERICAN HONDA MOTOR CO., INC.
  23. Check for continuity between body ground and ECM/PCM connector terminal E16.
    Fig 4: Checking Continuity Between Body Ground And ECM/PCM Connector Terminal E16
    G03674217Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES -  Go to step 24.
    2. NO -  Repair open in the wire between the PSP switch and the ECM/PCM (E16).
  24. Check for continuity between PSP switch 2P connector terminal No. 2 and body ground.
    Fig 5: Checking Continuity Between PSP Switch 2P Connector Terminal No. 2 And Body Ground
    G03674218Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES -  Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ).
    2. NO -  Repair open in the wire between the PSP switch and G301.
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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.

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