| 1. | Connect a scan tool/Honda PGM Tester. |
| 2. | Turn the ignition switch ON (II) and read the scan tool/Honda PGM Tester. Does the scan tool/Honda PGM Tester communicate with the ECM/PCM? YES - Go to 3. NO - Go to troubleshooting ‘‘DLC circuit''. |
| 3. | Check the scan tool/Honda PGM Tester for DTCs. Are any DTCs indicated? YES - Go to the DTC Troubleshooting Index. NO - Go to 4. |
| 4. | Turn the ignition switch OFF. |
| 5. | Turn the ignition switch ON (II) and watch the Malfunction Indicator Lamp (MIL). Does the MIL come on and stay on? YES - If the MIL always come on and stays on, go to 81. But if the MIL sometimes works normally, first check for these problems.
NO - If the MIL is always off, go to 6*1 (go to 13). But if the MIL sometimes works normally, first check for these problems.
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| 6. | Turn the ignition switch OFF. |
| 7. | Press the inertia switch button. |
| 8. | Turn the ignition switch ON(II). Does the MIL come on for 2 seconds after the ignition switch is turned ON (II)? YES - Intermittent failure system is OK at this time.n NO - Go to 9. |
| 9. | Turn the ignition switch OFF. |
| 10. | Disconnect the inertia switch 3P connector. |
| 11. | Connect the intertia switch 3P connector terminals No. 1 and No. 3 with a jumper wire.
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| 12. | Turn the ignition switch ON(II). Does the MIL come on for 2 seconds after the ignition switch is turned ON (II)? YES - Replace the inertia switch.n NO - Go to 13. |
| 13. | Turn the ignition switch OFF. |
| 14. | Turn the ignition switch ON(II). Is the low oil pressure light on? YES - Go to 17. NO - Go to 15. |
| 15. | Inspect the No. 16 (7.5A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 16. NO - Repair short in the wire between No. 16 (7.5A) fuse and the gauge assembly. Also replace the No. 16 (7.5A) fuse.n |
| 16. | Inspect the No. 3 (50A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Repair open in the wire between the No. 3 (50A) fuse and the gauge assembly. If the wires are OK, test the ignition switch.n NO - Repair short in the wire between the No. 3 (50A) fuse and the under-hood fuse/relay box. Also replace the No. 3 (50A) fuse.n |
| 17. | Try to start the engine. Does the engine start? YES - Go to 18. NO - Go to 21. |
| 18. | Turn the ignition switch OFF. |
| 19. | Connect ECM/PCM connector terminal E31 and body ground with a jumper wire.
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| 20. | Turn the ignition switch ON (II). Is the MIL on? YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/ PCM.n NO - Check for an open in the wires between the ECM/PCM (E31) and the gauge assembly. Also check for a blown MIL bulb. If the wires and the bulb are OK, replace the gauge assembly.n |
| 21. | Turn the ignition switch OFF. |
| 22. | Inspect the No. 20 (15A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 30. NO - Go to 23. |
| 23. | Remove the blown No. 20 (15A) fuse in the under-dash fuse/relay box. |
| 24. | Remove the driver's side under cover. |
| 25. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 1 (brown) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box.
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| 26. | Check for continuity between body ground and PGM-FI main relay 1 4P connector terminals No. 2 and No. 3 individually.
Is there continuity? YES - Repair short in the wire between the No. 20 (15A) fuse and the PGM-FI main relay 1. Also replace the No. 20 (15A) fuse.n NO - Go to 27. |
| 27. | Disconnect each of the component or the connector sensors below, one at a time, and check for continuity between the PGM-FI main relay 1 4P connector terminal No. 1 and body ground.
Is there continuity? YES - Go to 28. NO - Replace the item that made continuity to body ground go away when disconnected. If the item is the ECM/PCM, substitute a known-good ECM/PCM and recheck. |
| 28. | Disconnected the connectors of all following items.
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| 29. | Check for continuity between PGM-FI main relay 1 4P connector terminals No. 1 and body ground.
Is there continuity? YES - Repair short in the wire between PGM-FI main relay 1 and each item. Also replace the No. 20 (15A) fuse.n NO - Replace the PGM-FI main relay 1. Also replace the No. 20 (15A) fuse.n |
| 30. | Inspect the No. 11 (15A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 43. NO - Go to 31. |
| 31. | Remove the blown No. 11 (15A) fuse in the under-dash fuse/relay box. |
| 32. | Disconnect the negative cable from the battery. |
| 33. | Disconnect ECM/PCM connector E (31P). |
| 34. | Check for continuity between ECM/PCM connector terminal E9 and body ground.
Is there continuity? YES - Go to 35. NO - Replace the No. 11 (15A) fuse, and substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/ PCM.n |
| 35. | Remove the driver's side under cover. |
| 36. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 2, (blue) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box.
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| 37. | Check for continuity between ECM/PCM connector terminal E9 and body ground.
Is there continuity? YES - Repair short in the wire between the No. 11 (15A) fuse and the ECM/PCM (E9), or the No. 11 (15A) fuse and the PGM-FI main relay 2. Also replace the No. 11 (15A) fuse.n NO - Go to 38. |
| 38. | Disconnect the fuel pump 5P connector. |
| 39. | Check for continuity between fuel pump 5P connector terminal No. 5 and body ground.
Is there continuity? YES - Repair short in the wire between the fuel pump and the PGM-FI main relay 2. Also replace the No. 11 (15A) fuse.n NO - Go to 40. |
| 40. | Reinstall PGM-FI main relay 2 (A).
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| 41. | Check for continuity between fuel pump 5P connector terminal No. 5 and body ground.
Is there continuity? YES - Replace PGM-FI main relay 2. Also replace the No. 11 (15A) fuse.n NO - Check the fuel pump, and replace it if necessary. Also replace the No. 11 (15A) fuse.n |
| 42. | Disconnect the negative cable from the battery. |
| 43. | Disconnect ECM/PCM connector E (31P). |
| 44. | Reconnect the negative cable from the battery. |
| 45. | Turn the ignition switch ON (II). |
| 46. | Measure voltage between ECM/PCM connector terminals E9 and body ground.
Is there battery voltage? YES - Go to 47. NO - Repair open in the wire between the No. 11 (15A) fuse and the ECM/PCM (E9).n |
| 47. | Turn the ignition switch OFF. |
| 48. | Measure voltage between ECM/PCM connector terminal E7 and body ground.
Is there battery voltage? YES - Go to 53. NO - Go to 49. |
| 49. | Remove the driver's side under cover. |
| 50. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 1 (blown) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box.
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| 51. | Measure voltage between PGM-FI main relay 1 4P connector terminal No. 3 and body ground.
Is there battery voltage? YES - Go to 52. NO - Repair open in the wire between the No. 20 (15A) fuse and PGM-FI main relay 1.n |
| 52. | Check for continuity between PGM-FI main relay 1 4P connector terminal No. 4 and ECM/PCM connector terminal E7.
Is there continuity? YES - Test PGM-FI main relay 1. If the relay is OK, substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/ PCM.n NO - Repair open in the wire between PGM-FI main relay 1 and the ECM/PCM (E7).n |
| 53. | Reconnect ECM/PCM connector E (31P). |
| 54. | Reconnect the negative cable from the battery. |
| 55. | Turn the ignition switch ON (II). |
| 56. | Measure voltage between body ground and ECM/PCM connector terminals A2 and A3 individually.
Is there battery voltage? YES - Go to 64. NO - Go to 57. |
| 57. | Turn the ignition switch OFF. |
| 58. | Remove the driver's side under cover. |
| 59. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 1 (brown) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box.
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| 60. | Turn the ignition switch ON (II). |
| 61. | Measure voltage between PGM-FI main relay 1 4P connector terminal No. 2 and body ground.
Is there battery voltage? YES - Go to 62. NO - Repair open in the wire between the No. 20 (15A) fuse and PGM-FI main relay 1.n |
| 62. | Turn the ignition switch OFF. |
| 63. | Check for continuity between PGM-FI main relay 1 4P connector terminal No. 1 and ECM/PCM connector terminals A2 and A3 individually.
Is there continuity? YES - Replace the PGM-FI main relay 1.n NO - Repair open in the wire between PGM-FI main relay 1 and the ECM/PCM (A2, A3).n |
| 64. | Measure voltage between body ground and ECM/PCM connector terminals A4, A5, A23 and A24 individually.
Is there less than 0.2 V? YES - Repair open in the wire(s) that had more than 0.2 V between G101 and ECM/PCM (A4, A5, A23, A24).n NO - Go to 65. |
| 65. | Measure voltage between body ground and ECM/PCM connector terminals A21.
Is there about 5 V? YES - Go to 73. NO - Go to 66. |
| 66. | Turn the ignition switch OFF. |
| 67. | Disconnect the 3P connector from each of these sensors, one at a time, and measure voltage between body ground and ECM/PCM connector terminal A21 with the ignition switch ON (II).
Is there about 5 V? YES - Replace the sensor that restored 5 V when disconnected.n NO - Go to 68. |
| 68. | Turn the ignition switch OFF. |
| 69. | Disconnect the 3P connectors from the following sensors.
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| 70. | Disconnect the negative cable from the battery. |
| 71. | Disconnect ECM/PCM connector A (31P). |
| 72. | Check for continuity between ECM/PCM connector terminal A21 and body ground.
Is there continuity? YES - Repair short in the wire between ECM/PCM (A21) and the MAP sensor, CVT driven pulley speed sensor (A/T) or CVT speed sensor (A/T).n NO - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/PCM.n |
| 73. | Measure voltage between body ground and ECM/PCM connector terminals A20.
Is there about 5 V? YES - Substitute a known-good ECM/PCM and recheck. If the symptom/indication goes away, replace the original ECM/ PCM.n NO - Go to 74. |
| 74. | Turn the ignition switch OFF. |
| 75. | Disconnect the 3P connector from each of these sensors, one at a time, and measure voltage between body ground and ECM/PCM connector terminal A20 with the ignition switch ON (II).
Is there about 5 V? YES - Replace the sensor that restored 5 V when disconnected.n NO - Go to 76. |
| 76. | Turn the ignition switch OFF. |
| 77. | Disconnect the 3P connector from the following sensors.
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| 78. | Disconnect the negative cable from the battery. |
| 79. | Disconnect ECM/PCM connector A (31P). |
| 80. | Check for continuity between ECM/PCM connector terminal A20 and body ground.
Is there continuity? YES - Repair short in the wire between the ECM/PCM (A20) and the TP sensor, EGR valve position sensor or CVT drive pulley speed sensor (A/T).n NO - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/ PCM.n |
| 81. | Turn the ignition switch OFF. |
| 82. | Turn the ignition switch ON (II). |
| 83. | Measure voltage between ECM/PCM connector terminal E29 and body ground.
Is there about 5 V (or battery voltage)? YES - Go to 88. NO - Go to 84. |
| 84. | Turn the ignition switch OFF. |
| 85. | Disconnect the negative cable from the battery. |
| 86. | Disconnect the ECM/PCM connector E (31P). |
| 87. | Check for continuity between ECM/PCM connector terminal E29 and body ground.
Is there continuity? YES - Repair short in the wire between the data link connector (or the service check connector) and the ECM/PCM (E29).n NO - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/ PCM.n |
| 88. | Turn the ignition switch OFF. |
| 89. | Disconnect the negative cable from the battery. |
| 90. | Disconnect the ECM/PCM connector E (31P). |
| 91. | Reconnect the negative cable from the battery. |
| 92. | Turn the ignition ON (II). Is the MIL ON? YES - Repair short in the wire between the gauge assembly and the ECM/PCM (E31). If the wires are OK, replace the gauge assembly.n NO - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/ PCM.n |