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Home >> Honda >> 2014 >> Ridgeline RT >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> DTC Troubleshooting >> DTC P0351: No. 1 Cylinder Ignition Coil Circuit Malfunction; DTC P0352: No. 2 Cylinder Ignition Coil Circuit Malfunction; DTC P0353: No. 3 Cylinder Ignition Coil Circuit Malfunction; DTC P0354: No. 4 Cylinder Ignition Coil Circuit Malfunction; DTC P0355: No. 5 Cylinder Ignition Coil Circuit Malfunction; DTC P0356: No. 6 Cylinder Ignition Coil Circuit Malfunction

DTC P0351: No. 1 Cylinder Ignition Coil Circuit Malfunction; DTC P0352: No. 2 Cylinder Ignition Coil Circuit Malfunction; DTC P0353: No. 3 Cylinder Ignition Coil Circuit Malfunction; DTC P0354: No. 4 Cylinder Ignition Coil Circuit Malfunction; DTC P0355: No. 5 Cylinder Ignition Coil Circuit Malfunction; DTC P0356: No. 6 Cylinder Ignition Coil Circuit Malfunction

NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  • Information marked with an asterisk (*1) applies to '09-11 models.
  • Information marked with an asterisk (*2) applies to '12 model.
  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine.
  4. Check for Pending DTCs or Confirmed DTCs with the HDS.

    Is a DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? 

    YES  -Go to step 5.

    NO  -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the ignition coil and the PCM. ■

  5. Turn the ignition switch to LOCK (0).
  6. Exchange the ignition coil from the problem cylinder with one from another cylinder.
  7. Start the engine.
  8. Check for Pending DTCs or Confirmed DTCs with the HDS.

    Is an ignition coil DTC indicated at the exchanged cylinder? 

    YES  -Replace the faulty ignition coil (see IGNITION COIL REMOVAL/INSTALLATION ), then Go to step  27.

    NO  -Go to step 9.

  9. Turn the ignition switch to LOCK (0).
  10. Check the No. 2 IG COIL (15 A) fuse in the under-dash fuse/relay box.

    Is the fuse OK? 

    YES  -Go to step 11.

    NO  -Go to step  13.

  11. Remove the ignition coil relay (A) from the under-dash fuse/relay box.
    Fig 1: Identifying Ignition Coil Relay From Under-Dash Fuse/Relay Box
    G05964423Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. Do the ignition coil relay test (see POWER RELAY TEST ).

    Is the relay OK? 

    YES  -Go to step  16.

    NO  -Replace the ignition coil relay, then Go to step  26.

  13. Remove the ignition coil relay (A) from the under-dash fuse/relay box.
    Fig 2: Identifying Ignition Coil Relay From Under-Dash Fuse/Relay Box
    G05964424Courtesy of AMERICAN HONDA MOTOR CO., INC.
  14. Disconnect all ignition coil 3P connectors.
  15. Check for continuity between No. 1 ignition coil 3P connector terminal No. 3 and body ground.
    Fig 3: Checking Continuity Between No. 1 Ignition Coil 3P Connector Terminal No. 3 And Body Ground
    G05964425Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair short in the wire between the ignition coils and the ignition coil relay. Also replace the No. 2 IG COIL (15 A) fuse, then Go to step  26.

    NO  -Check the under-dash fuse/relay box, and replace it if needed (see REMOVAL AND INSTALLATION ), then Go to step  26.

  16. Reinstall the ignition coil relay.
  17. Disconnect the ignition coil 3P connector from the problem cylinder.
  18. Turn the ignition switch to ON (II).
  19. Measure the voltage between ignition coil 3P connector terminal No. 3 of the problem cylinder and body ground (see table).
    DTC PROBLEM CYLINDER REFERENCE CHART

    PROBLEM CYLINDER DTC
    No. 1 P0351
    No. 2 P0352
    No. 3 P0353
    No. 4 P0354
    No. 5 P0355
    No. 6 P0356
    Fig 4: Measuring Voltage Between Ignition Coil 3P Connector Terminal No. 3 Of Problem Cylinder And Body Ground
    G00512163Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step 20.

    NO  -Repair open in the wire between the ignition coil and the ignition coil relay, then Go to step  26.

  20. Turn the ignition switch to LOCK (0).
  21. Check for continuity between ignition coil 3P connector terminal No. 2 of the problem cylinder and body ground (see table).
    DTC PROBLEM CYLINDER REFERENCE CHART

    PROBLEM CYLINDER DTC
    No. 1 P0351
    No. 2 P0352
    No. 3 P0353
    No. 4 P0354
    No. 5 P0355
    No. 6 P0356
    Fig 5: Checking Continuity Between Ignition Coil 3P Connector Terminal No. 2 Of Problem Cylinder And Body Ground
    G05964427Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 22.

    NO  -Repair open in the wire between the ignition coil and G101, then Go to step  26.

  22. Jump the SCS line with the HDS.
  23. Disconnect PCM connector B (49P).
  24. Check for continuity between body ground and the PCM connector terminals (see table).
    TERMINAL REFERENCE CHART

    PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR
    No. 1 P0301 B29 YEL/GRN*1
    WHT*2
    No. 2 P0302 B30 BLU/RED*1
    PUR*2
    No. 3 P0303 B22 WHT/BLU*1
    BLU*2
    No. 4 P0304 B23 BRN*1
    LT BLU*2
    No. 5 P0305 B11 BLK/RED*1
    YEL*2
    No. 6 P0306 B12 BRN/WHT*1
    TAN*2
    Fig 6: Checking Continuity Between Body Ground And PCM Connector Terminals
    G05964428Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair short in the wire(s) between the PCM and the ignition coil(s), then Go to step  26.

    NO  -Go to step 25.

  25. Check for continuity between appropriate ignition coil 3P connector terminal No. 1 and the PCM connector terminal of the problem cylinder (see table).
    TERMINAL REFERENCE CHART

    PROBLEM CYLINDER DTC PCM TERMINAL WIRE COLOR
    No. 1 P0301 B29 YEL/GRN*1
    WHT*2
    No. 2 P0302 B30 BLU/RED*1
    PUR*2
    No. 3 P0303 B22 WHT/BLU*1
    BLU*2
    No. 4 P0304 B23 BRN*1
    LT BLU*2
    No. 5 P0305 B11 BLK/RED*1
    YEL*2
    No. 6 P0306 B12 BRN/WHT*1
    TAN*2
    Fig 7: Checking Continuity Between Appropriate Ignition Coil 3P Connector Terminal No. 1 And PCM Connector Terminal
    G05964429Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 8: Checking Continuity Between Appropriate Ignition Coil 3P Connector Terminal No. 1 And PCM Connector Terminal
    G05964430Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step  32.

    NO  -Repair open in the wire between the PCM and the ignition coil, then Go to step 26.

  26. Turn the ignition switch to LOCK (0).
  27. Reconnect all connectors.
  28. Turn the ignition switch to ON (II).
  29. Reset the PCM with the HDS.
  30. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
  31. Check for Pending DTCs or Confirmed DTCs with the HDS.

    Is DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? 

    YES  -Check for poor connections or loose terminals at the ignition coil(s) and the PCM, then Go to step  1.

    NO  -Troubleshooting is complete. If any other Pending DTCs or Confirmed DTCs are indicated, Go to the indicated DTC's troubleshooting. ■

  32. Reconnect all connectors.
  33. Update the PCM if it does not have the latest software (see PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
  34. Check for Pending DTCs or Confirmed DTCs with the HDS.

    Is DTC P0351, P0352, P0353, P0354, P0355, and/or P0356 indicated? 

    YES  -Check for poor connections or loose terminals at the ignition coil(s) and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, Go to step  1.

    NO  -If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see PCM REPLACEMENT ). If any other Pending DTCs or Confirmed DTCs are indicated, Go to the indicated DTC's troubleshooting. ■

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