Pgm-Fi System: Diagnosis Honda Element YH2 рестайлинг 2

DTC P050A: Cold Start Idle Air Control System Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs other than P050A indicated? YES -Go to the indicated DTCs troubleshooting. NO -Go to step 3.
3. Check for poor connections or a blockage at the intake air duct. Is it OK? YES -Go to step 4. NO -Reconnect or repair the intake air duct, then go to step 20 .
4. Check for damage to the air cleaner housing. Is it OK? YES -Go to step 5. NO -Replace the air cleaner housing (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-290823-S09685521252008072200000) ), then go to step 20 .
5. Check for dirt or debris in the air cleaner element. Is it dirty? YES -Replace the air cleaner element or remove the debris (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-290823-S09685521252008072200000) ), then go to step 20 . NO -Go to step 6.
6. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
7. Clear the DTC with the HDS.
8. Start the engine, and let it idle for 10 seconds or more.
9. Monitor the OBD STATUS for DTC P050A in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 10. NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the ECM/PCM. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 and recheck.
10. Do the ETCS TEST in the INSPECTION MENU with the HDS. Is the THROTTLE ACTUATOR CONTROL VALVE normal? YES -Go to step 11. NO -Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-290823-S31565991452008072200000) ), then go to step 20 .
11. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
12. Monitor the ENGINE SPEED in the DATA LIST with the HDS, and hold the engine speed at 2,500 rpm for at least 30 seconds.
13. While holding the engine speed at 2,500 rpm, check the MAF SENSOR in the DATA LIST with the HDS. Is there about 6.4- 9.2 gm/s? YES -Go to step 14. NO -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-355245-S33598592802010012100000) ), then go to step 20 .
14. Turn the ignition switch to LOCK (0).
15. Allow the engine to cool to the ambient temperature.
16. Note the ambient temperature.
17. Turn the ignition switch to ON (II).
18. Note the value of IAT SENSOR quickly in the DATA LIST with the HDS.
19. Compare the value of the IAT SENSOR and the ambient temperature. Does the value of the IAT SENSOR differ 5.4°F (3°C) or more from the ambient temperature? YES -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-355245-S33598592802010012100000) ), then go to step 20. NO -Check for dirt, carbon, or damage in the throttle bore. If there is dirt or carbon, clean the throttle body (see «THROTTLE BODY CLEANING»(ref-290823-S19534659422008072200000) ), then go to step 20. If there is damage in the throttle bore, replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-290823-S31565991452008072200000) ), then go to step 20.
20. Turn the ignition switch to ON (II).
21. Reset the ECM/PCM with the HDS.
22. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
23. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
24. Start the engine, and let it idle for 10 seconds or more.
25. Check for Temporary DTCs or DTCs with the HDS. Is DTC P050A indicated? YES -Check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the ECM/PCM, then go to step 1 . NO -Go to step 26.
26. Monitor the OBD STATUS for DTC P050A in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 25 , go to the indicated DTCs troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body, the MAF sensor/IAT sensor, and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 23 .

DTC P050B: Cold Start Ignition Timing Control System Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs other than P050B indicated? YES -Go to the indicated DTCs troubleshooting. NO -Go to step 3.
3. Check for poor connections or a blockage at the intake air duct. Is it OK? YES -Go to step 4. NO -Reconnect or repair the intake air duct, then go to step 25 .
4. Check for damage at the air cleaner housing. Is it OK? YES -Go to step 5. NO -Replace the air cleaner housing (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-290823-S09685521252008072200000) ), then go to step 25 .
5. Check for dirt or debris in the air cleaner element. Is it dirty? YES -Replace the air cleaner element or remove the debris (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-290823-S09685521252008072200000) ), then go to step 25 . NO -Go to step 6.
6. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
7. Clear the DTC with the HDS.
8. Start the engine, and let it idle for 10 seconds or more.
9. Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 10. NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the ECM/PCM. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to step 6 and recheck.
10. Check the ignition timing (see «IGNITION TIMING INSPECTION»(ref-290826-S15240868122008072200000) ). Is the ignition timing OK? YES -Go to step 12 . NO -Go to step 11.
11. Check for damage at the CKP sensor (see «CKP SENSOR REPLACEMENT»(ref-355245-S37403578082010012100000) ) and the CKP sensor pulser plate (see «CKP PULSE PLATE REPLACEMENT»(ref-290827-S20457298242008072200000) ). Is the CKP sensor and/or the CKP sensor pulser plate damaged? YES -Replace the CKP sensor (see «CKP SENSOR REPLACEMENT»(ref-355245-S37403578082010012100000) ) and/or the CKP sensor pulser plate (see «CKP PULSE PLATE REPLACEMENT»(ref-290827-S20457298242008072200000) ), then go to step 6 . NO -Go to step 32 .
12. Do the ETCS TEST in the INSPECTION MENU with the HDS. Is the THROTTLE ACTUATOR CONTROL VALVE normal? YES -Go to step 13. NO -Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-290823-S31565991452008072200000) ), then go to step 25 .
13. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
14. Monitor the ENGINE SPEED in the DATA LIST with the HDS, and hold the engine speed at 2,500 rpm for at least 30 seconds.
15. While holding the engine speed at 2,500 rpm, check the MAF SENSOR in the DATA LIST with the HDS. Is there about 6.4- 9.2 gm/s? YES -Go to step 16. NO -Replace the MAF sensor/IAT sensor (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-355245-S33598592802010012100000) ), then go to step 25 .
16. Turn the ignition switch to LOCK (0).
17. Drain the coolant (see «COOLANT CHECK»(ref-290817-S27864475492008072200000) ).
18. Remove ECT sensor 1 (see «ECT SENSOR 1 REPLACEMENT»(ref-355245-S32795880472010012100000) ), and ECT sensor 2 (see «ECT SENSOR 2 REPLACEMENT»(ref-355245-S14920613822010012100000) ).
19. Allow the sensors to cool to the ambient temperature.
20. Note the ambient temperature.
21. Connect ECT sensor 1 and ECT sensor 2 to their 2P connectors, but do not install them.
22. Turn the ignition switch to ON (II).
23. Note the value of ECT SENSOR 1 and ECT SENSOR 2 quickly in the DATA LIST with the HDS.
24. Compare the value of ECT SENSOR 1 and the ambient temperature, and the value of ECT SENSOR 2 and the ambient temperature individually. Does either sensor differ more than 5.4°F (3°C) from the ambient temperature? YES -Replace the sensor that differed more than 5.4°F (3°C) from the ambient temperature, then go to step 25. NO -Check and repair any problems with the following items. Repair or replace parts as needed, then go to step 25. If all of the items are OK, go to step 32 . Engine compression and cylinder leakdown VTEC system Engine oil A/C system Power steering
25. Turn the ignition switch to ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
28. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
29. Start the engine, and let it idle for 10 seconds or more.
30. Check for Temporary DTCs or DTCs with the HDS. Is DTC P050B indicated? YES -Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the ECM/PCM, then go to step 1 . NO -Go to step 31.
31. Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 29 , go to the indicated DTCs troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 28 .
32. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ).
33. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
34. Let the engine cool until the value of ECT SENSOR 1 is 122°F (50°C) or less.
35. Start the engine, and let it idle for 10 seconds or more.
36. Check for Temporary DTCs or DTCs with the HDS. Is DTC P050B indicated? YES -Check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then go to step 34 . If the ECM/PCM was substituted, go to step 1 . NO -Go to step 37.
37. Monitor the OBD STATUS for DTC P050B in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). If any other Temporary DTCs or DTCs were indicated in step 36 , go to the indicated DTCs troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the CKP sensor, the throttle body, the MAF sensor/IAT sensor, ECT sensor 1, ECT sensor 2, and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then go to step 34 . If the ECM/PCM was substituted, go to step 1 . If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 34 .

DTC P062F: ECM/PCM Internal Control Module Keep Alive Memory (KAM) Error

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Check for Temporary DTCs or DTCs with the HDS. Is DTC P062F indicated? YES -Go to step 4 . NO -Intermittent failure, the system is OK at this time.
4. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ).
5. Check for Temporary DTCs or DTCs with the HDS. Is DTC P062F indicated? YES -If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the ECM/PCM was substituted, go to step 1 . NO -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.

DTC P16BB: Alternator B Terminal Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine.
4. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam
5. Hold the engine speed at 2,000 rpm (A/T in P or N, M/T in neutral) for 1 minute.
6. Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BB indicated? YES -Go to step 7. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, and check the battery performance (see «BATTERY TEST»(ref-290830-S21099645942008072200000) ).
7. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box (+B line). Are the connections and the terminals OK? YES -Go to step 8. NO -Repair the connections or the terminals, then go to step 9 .
8. Check for an open in the wire (+B line) between the alternator and the under-hood fuse/relay box. Is the harness OK? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(ref-290825-S27008973802008072200000) ), then go to step 9. NO -Repair open in the wire between the alternator and the under-hood fuse/relay box, then go to step 9.
9. Turn the ignition switch to ON (II).
10. Reset the ECM/PCM with the HDS.
11. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
12. Start the engine.
13. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam
14. Hold the engine speed at 2,000 rpm (A/T in P or N, M/T in neutral) for 1 minute.
15. Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BB indicated? YES -Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, then go to step 1 . NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.

DTC P16BC: Alternator FR Terminal Circuit/IGP Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

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1. Check for poor connections or loose terminals at the alternator 4P connector. Are the connections and the terminals OK? YES -Go to step 2. NO -Repair the connections or the terminals, then go to step 20 .
2. Check the alternator mounting surfaces for corrosion. Are the mounting surfaces corroded? YES -Remove the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(ref-290825-S27008973802008072200000) ). Clean all mounting surfaces, then reinstall the alternator, and go to step 20 . NO -Go to step 3.
3. Turn the ignition switch to ON (II).
4. Clear the DTC with the HDS.
5. Start the engine.
6. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam
7. Hold the engine speed at 2,000 rpm (A/T in P or N, M/T in neutral) for 1 minute.
8. Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BC indicated? YES -Go to step 9. NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator.
9. Turn the ignition switch to LOCK (0).
10. Disconnect the alternator 4P connector.
11. Turn the ignition switch to ON (II).
12. Measure the voltage between alternator 4P connector terminal No. 1 and body ground. Is there battery voltage? YES -Go to step 13. NO -Repair open in the wire between the alternator (IG1 line) and the No. 4 ACG (10 A) fuse in the under-dash fuse/relay box, then go to step 19 .
13. Measure the voltage between alternator 4P connector terminal No. 4 and body ground. Is there about 5 V? YES -Replace the alternator (see «ALTERNATOR REMOVAL AND INSTALLATION»(ref-290825-S27008973802008072200000) ), then go to step 19 . NO -Go to step 14.
14. Turn the ignition switch to LOCK (0).
15. Jump the SCS line with the HDS.
16. Disconnect ECM/PCM connector B (24P)
17. Connect alternator 4P connector terminal No. 4 to body ground with a jumper wire.
18. Check for continuity between ECM/PCM connector terminal B13 and body ground. Is there continuity? YES -Go to step 28 . NO -Repair open in the wire between the ECM/PCM (B13) and the alternator, then go to step 20 .
19. Turn the ignition switch to LOCK (0).
20. Reconnect all connectors.
21. Turn the ignition switch to ON (II).
22. Reset the ECM/PCM with the HDS.
23. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
24. Start the engine.
25. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam
26. Hold the engine speed at 2,000 rpm (A/T in P or N, M/T in neutral) for 1 minute.
27. Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BC indicated? YES -Check for poor connections or loose terminals at the alternator and the ECM/PCM, then go to step 1 . NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.
28. Reconnect all connectors.
29. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ).
30. Start the engine.
31. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam
32. Hold the engine speed at 2,000 rpm (A/T in P or N, M/T in neutral) for 1 minute.
33. Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BC indicated? YES -Check for poor connections or loose terminals at the alternator and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then go to step 31 . If the ECM/PCM was substituted, go to step 1 . NO -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.

DTC P2A00: A/F Sensor (Sensor 1) Circuit Range/Performance Problem

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
4. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) A/T in D, M/T in 3rd Vehicle speed between 25-55 mph (40-88 km/h) for 5 minutes Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 5 seconds
5. Monitor the OBD STATUS for DTC P2A00 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Go to step 6. NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM. If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 3 and recheck.
6. Turn the ignition switch to LOCK (0).
7. Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(ref-355245-S09534232052010012100000) ).
8. Turn the ignition switch to ON (II).
9. Reset the ECM/PCM with the HDS.
10. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-290807-S02808252682008072200000) ).
11. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
12. Test-drive under these conditions: Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) A/T in D, M/T in 3rd Vehicle speed between 25-55 mph (40 - 88 km/h) for 5 minutes Drive at a steady speed between 55-75 mph (88-120 km/h) for 10 seconds, then decelerate (with the throttle fully closed) for 5 seconds
13. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2A00 indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1 . NO -Go to step 14.
14. Monitor the OBD STATUS for DTC P2A00 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 13 , go to the indicated DTCs troubleshooting. NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to step 11 .

DLC Circuit Troubleshooting

Note. Make sure the HDS and the HDS DLC cable are not defective.

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1. Turn the ignition switch to LOCK (0).
2. Connect the HDS to the DLC (see «HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)»(ref-290833-S38113548712008072200000) ).
3. Turn the ignition switch to ON (II), and read the HDS. Does the HDS identify the vehicle? YES -Go to step 4. NO -Go to step 22 .
4. Check for Temporary DTCs or DTCs in the PGM-FI system with the HDS. Are any Temporary DTCs or DTCs indicated? YES -Go to the indicated DTCs troubleshooting. NO -Go to step 5.
5. Turn the ignition switch to LOCK (0).
6. Turn the ignition switch to ON (II), and watch the SRS indicator. Does the SRS indicator stay on? YES -Go to the SRS general troubleshooting information (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-355246-S14403626162010012100000) ). NO -Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Start the engine, and watch the TPMS indicator. Does the TPMS indicator stay on? YES -Go to the TPMS general troubleshooting information (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-290851-S29321957792008072200000) ). NO -Go to step 9.
9. Turn the ignition switch to LOCK (0).
10. Turn the ignition switch to ON (II), and watch the VSA indicator. Does the VSA indicator stay on? YES -Go to the VSA system's general troubleshooting information (see «GENERAL TROUBLESHOOTING INFORMATION»(ref-290850-S22194746752008072200000) ). NO -Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Turn the ignition switch to ON (II), and watch the immobilizer indicator. Does the immobilizer indicator stay on or flash? YES -Go to the immobilizer system's troubleshooting (see «SYMPTOM TROUBLESHOOTING INFORMATION»(ref-290852-S27440692382008072200000) ). NO -Go to step 13.
13. Do the gauge self-diagnostic function without the HDS (see «SELF-DIAGNOSTIC FUNCTION»(ref-290836-S32015115272008072200000) ). Are any indicators flashing? YES -Go to step 14. NO -Troubleshoot the gauge control module (see «SELF-DIAGNOSTIC FUNCTION»(ref-290836-S32015115272008072200000) ).
14. Turn the ignition switch to LOCK (0).
15. Disconnect the HDS from the DLC.
16. Check for continuity between body ground and DLC terminals No. 1 and No. 7 individually. Is there continuity? YES -Go to step 17. NO -Go to step 18 .
17. Continue to check for continuity between DLC terminals No. 1 and No. 7 and body ground individually, while disconnecting these connectors, one at a time: Gauge control module 36P connector SRS unit connector A (28P) VSA modulator-control unit 47P connector Immobilizer control unit 7P connector TPMS control unit connector B (20P) Navigation unit connector A (24P) Does continuity go away when one of the above parts is disconnected? YES -Replace the part that caused an open when it was disconnected. NO -Repair short in the wire between DLC No. 7 (K-line) and the VSA modulator-control unit, the SRS unit, the navigation unit, the TPMS control unit, or the gauge control module, or DLC No. 1 (DIAG-H line) and the immobilizer control unit.
18. Connect DLC terminals No. 1 and No. 7 to body ground with a jumper wire.
19. Check for continuity between body ground and these connector terminals: TERMINAL REFERENCE CHART Connector Unit Terminal DLC Terminal Gauge control module 36P No. 9 (LT BLU) No. 7 (LT BLU) VSA modulator-control unit 47P No. 2 (LT BLU) No. 7 (LT BLU) SRS unit A 28 P No. 24 (LT BLU) No. 7 (LT BLU) TPMS control unit B 20P No. 9 (LT BLU) No. 7 (LT BLU) Navigation unit 24P (with navigation system) No. 3 (LT BLU) No. 7 (LT BLU) Immobilizer control unit 7P No. 3 (GRY) No. 1 (GRY) Is there continuity between body ground and each of the terminals in the chart? YES -Replace the part that does not communicate with the HDS. NO -Repair open in the wire between the DLC (K-line or DIAG-H line) and the appropriate connector.
20. Do the gauge self-diagnostic function (see «SELF-DIAGNOSTIC FUNCTION»(ref-290836-S32015115272008072200000) ).
21. Check the odometer/tripmeter for an "Error 1" message. Is Error 1 displayed? YES -Go to step 35 . NO -Go to step 22.
22. Turn the ignition switch to LOCK (0).
23. Disconnect the HDS from the DLC.
24. Measure the voltage between DLC terminal No. 16 and body ground. Is there battery voltage? YES -Go to step 25. NO -Repair open in the wire between DLC terminal No. 16 and the No. 9 BACK UP (10 A) fuse in the under-hood fuse/relay box.
25. Measure the voltage between DLC terminals No. 4 and No. 16. Is there battery voltage? YES -Go to step 26. NO -Repair open in the wire between DLC terminal No. 4 and G451.
26. Connect the HDS to the DLC (see «HOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)»(ref-290833-S38113548712008072200000) ).
27. Jump the SCS line with the HDS.
28. Disconnect ECM/PCM connector E (31P).
29. Disconnect the HDS from the DLC.
30. Connect DLC terminal No. 6 to body ground with a jumper wire.
31. Check for continuity between ECM/PCM connector terminal E11 and body ground. Is there continuity? YES -Go to step 32. NO -Repair open in the wire between the ECM/PCM (E11) and DLC terminal No. 6.M
32. Disconnect the jumper wire.
33. Connect DLC terminal No. 14 to body ground with a jumper wire.
34. Check for continuity between ECM/PCM connector terminal E24 and body ground. Is there continuity? YES -Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). NO -Repair open in the wire between the ECM/PCM (E24) and DLC terminal No. 14.
35. Try to start the engine. Does the engine start and idle smoothly? YES -Go to the F-CAN circuit troubleshooting (see «F-CAN CIRCUIT TROUBLESHOOTING»(ref-355245-S25515950202010012100000) ). NO -Go to step 36.
36. Turn the ignition switch to LOCK (0).
37. Check the No. 20 IG1 (50 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Repair open in the wire between the No. 20 IG1 (50 A) fuse and the ignition switch. If the wire is OK, go to step 38. NO -Repair short in the wire between the No. 20 IG1 (50 A) fuse and the ignition switch. Also replace the No. 20 IG1 (50A)fuse.
38. Inspect the No. 6 Fl ECU (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES -Go to step 45 . NO -Go to step 39.
39. Remove the blown No. 6 Fl ECU (15 A) fuse from the under-hood fuse/relay box.
40. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(ref-290806-S13331020522008072200000) ), then remove PGM-FI main relay 1 (Fl MAIN) (A).
41. Check for continuity between body ground and PGM-FI main relay 1 (Fl MAIN) 4P connector terminals No. 2 and No. 4 individually. Is there continuity? YES -Repair short in the wire between the No. 6 Fl ECU (15 A) fuse and PGM-FI main relay 1 (Fl MAIN). Also replace the No. 6 Fl ECU (15 A) fuse. NO -Go to step 42.
42. Disconnect each of the parts or connectors below, one at a time, while checking for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 1 and body ground: PGM-FI main relay 2 (FUEL PUMP) ECM/PCM connector A (31P) Each injector 2P connector Camshaft position (CMP) sensor B 3P connector Crankshaft position (CKP) sensor 3P connector Throttle actuator control module relay Does continuity go away when one of the above parts is disconnected? YES -Replace the parts that made the short to body ground go away when disconnected. Reconnect all connectors, then update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). Also replace the No. 6 Fl ECU (15 A) fuse. NO -Go to step 43.
43. Disconnect the connectors from these parts: PGM-FI main relay 2 (FUEL PUMP) ECM/PCM connector A (31P) Injectors Camshaft position (CMP) B sensor Crankshaft position (CKP) sensor Throttle actuator control module relay
44. Check for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 1 and body ground. Is there continuity? YES -Repair short in the wire between PGM-FI main relay 1 (Fl MAIN) and each part. Also replace the No. 6 Fl ECU (15 A) fuse. NO -Replace PGM-FI main relay 1 (Fl MAIN). Also replace the No. 6 Fl ECU (15 A) fuse.
45. Inspect the No. 17 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES -Go to step 57 . NO -Go to step 46.
46. Remove the blown No. 17 FUEL PUMP (15 A) fuse from the under-dash fuse/relay box.
47. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(ref-290806-S13331020522008072200000) ), then remove PGM-FI main relay 2 (FUEL PUMP) (A).
48. Test PGM-FI main relay 2 (FUEL PUMP) (see «POWER RELAY TEST»(ref-290831-S29773354882008072200000) ). Is the relay OK? YES -Go to step 49. NO -Replace the PGM-FI main relay 2 (FUEL PUMP). Also replace the No. 17 FUEL PUMP (15 A) fuse.
49. Check for continuity between PGM-FI main relay 2 (FUEL PUMP) 4P connector terminal No. 2 and body ground. Is there continuity? YES -Go to step 50. NO -Go to step 53 .
50. Jump the SCS line with the HDS.
51. Disconnect ECM/PCM connector E (31P).
52. Check for continuity between ECM/PCM connector terminal E9 and body ground. Is there continuity? YES -Repair short in the wire between the No. 17 FUEL PUMP (15 A) fuse and the ECM/PCM NO -Replace the No. 17 FUEL PUMP (15 A) fuse, and update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ).
53. Remove the center console (see «CENTER CONSOLE REMOVAL/INSTALLATION»(ref-290853-S34235352102008072200000) ).
54. Remove the access panel from the floor (see «FUEL TANK UNIT REMOVAL/INSTALLATION»(ref-290822-S24543871492008072200000) ).
55. Disconnect the fuel pump 5P connector.
56. 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 PGM-FI main relay 2 (FUEL PUMP). Also replace the No. 17 FUEL PUMP (15 A) fuse. NO -Check the fuel pump, and replace it if needed. Also replace the No. 17 FUEL PUMP (15 A) fuse.
57. Jump the SCS line with the HDS.
58. Disconnect ECM/PCM connector E (31P).
59. Turn the ignition switch to ON (II).
60. Measure the voltage between ECM/PCM connector terminal E9 and body ground. Is there battery voltage? YES -Go to step 61. NO -Repair open in the wire between the No. 17 FUEL PUMP (15 A) fuse and the ECM/PCM (E9).
61. Measure the voltage between ECM/PCM connector terminal E7 and body ground. Is there battery voltage? YES -Go to step 66 . NO -Go to step 62.
62. Turn the ignition switch to LOCK (0).
63. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(ref-290806-S13331020522008072200000) ), then remove PGM-FI main relay 1 (Fl MAIN) (A).
64. Measure the voltage between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 4 and body ground. Is there battery voltage? YES -Go to step 65. NO -Repair open in the wire between the No. 6 Fl ECU (15 A) fuse and PGM-FI main relay 1 (Fl MAIN).
65. Check for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 3 and ECM/PCM connector terminal E7. Is there continuity? YES -Test PGM-FI main relay 1 (Fl MAIN) (see «POWER RELAY TEST»(ref-290831-S29773354882008072200000) ). If the relay is faulty, replace it. If the relay is OK, update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). NO -Repair open in the wire between the ECM/PCM (E7) and PGM-FI main relay 1 (Fl MAIN).
66. Reconnect ECM/PCM connector E (31P).
67. Turn the ignition switch to ON (II).
68. Measure the voltage between body ground and ECM/PCM connector terminals A2 and A3 individually. Is there battery voltage? YES -Go to step 73 . NO -Go to step 69.
69. Turn the ignition switch to LOCK (0).
70. Remove PGM-FI main relay 1 (Fl MAIN) (A).
71. Measure the voltage between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 2 and body ground. Is there battery voltage? YES -Go to step 72. NO -Repair open in the wire between the No. 6 Fl ECU (15 A) fuse and PGM-FI main relay 1 (Fl MAIN).
72. Check for continuity between PGM-FI main relay 1 (Fl MAIN) 4P connector terminal No. 1 and ECM/PCM connector terminals A2 and A3 individually. Is there continuity? YES -Test PGM-FI main relay 1 (Fl MAIN) (see «POWER RELAY TEST»(ref-290831-S29773354882008072200000) ). If the relay is faulty, replace it. If the relay is OK, update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). NO -Repair open in the wire between PGM-FI main relay 1 (Fl MAIN) and the ECM/PCM (A2, A3).
73. Measure the voltage between body ground and ECM/PCM connector terminals A4, A5, A8, A9, and E3 individually. Is there less than 1.0 V? YES -Go to step 74. NO -Repair open in the wire(s) that had more than 1.0 V between G101 and the ECM/PCM (A4, A5, A8, A9, E3).
74. Turn the ignition switch to ON (II).
75. Measure the voltage between body ground and ECM/PCM connector terminal A21. Is there about 5 V? YES -Go to step 80 . NO -Go to step 76.
76. Disconnect the connector from each of the following sensors, one at a time, while measuring the voltage between body ground and ECM/PCM connector terminal A21 with the ignition switch in ON (II): MAP sensor Output shaft (countershaft) speed sensor APP sensor Is there about 5 V? YES -Replace the sensor that restored 5 V when it was disconnected. NO -Go to step 77.
77. Turn the ignition switch to LOCK (0).
78. Disconnect ECM/PCM connector A (31P).
79. Check for continuity between ECM/PCM connector terminal A21 and body ground. Is there continuity? YES -Repair short in the wire between the ECM/PCM (A21) and the MAP sensor, the output shaft (countershaft) speed sensor, or the APP sensor. NO -Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ).
80. Measure the voltage between body ground and ECM/PCM connector terminal A20. Is there about 5 V? YES -Go to step 86 . NO -Go to step 81.
81. Turn the ignition switch to LOCK (0).
82. Disconnect the connector from each of the following sensors, one at a time, while measuring the voltage between body ground and ECM/PCM connector terminal A20 with the ignition switch in ON (II): APP sensor A/T model: Input shaft (mainshaft) speed sensor Is there about 5 V? YES -Replace the sensor that restored 5 V when it was disconnected. NO -Go to step 83.
83. Turn the ignition switch to LOCK (0).
84. Disconnect ECM/PCM connector A (31P).
85. 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 APP sensor or the input shaft (mainshaft) speed sensor. NO -Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ).
86. Measure the voltage between body ground and ECM/PCM connector terminal E5. Is there about 5 V? YES -Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ). NO -Go to step 87.
87. Turn the ignition switch to LOCK (0).
88. Disconnect the FTP sensor 3P connector, then measure the voltage between body ground and ECM/PCM connector terminal E5 with the ignition switch ON (II). Is there about 5 V? YES -Replace the FTP sensor (see «FTP SENSOR REPLACEMENT»(ref-290849-S28805979572008072200000) ), NO -Go to step 89.
89. Turn the ignition switch to LOCK (0).
90. Disconnect ECM/PCM connector E (31P).
91. Check for continuity between ECM/PCM connector terminal E5 and body ground. Is there continuity? YES -Repair short in the wire between the ECM/PCM (E5) and FTP sensor. NO -Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(ref-355245-S27182940282010012100000) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(ref-290833-S34742010492008072200000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-355245-S09328189752010012100000) ).

Scheme 469

Scheme 470

1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(ref-290822-S08193520882008072200000) ).
2. Remove the engine cover (see «REMOVAL»(ref-290821-S41603061832008072200000) ).
3. Disconnect the connectors (A) from the injectors.
4. Remove the ground cable bolt (G101) (B).
5. Disconnect the quick-connect fittings (C).
6. Remove the fuel rail mounting nuts (D) from the fuel rail (E).
7. Remove the injector clips (F) from the injectors.
8. Remove the injectors from the fuel rail.
9. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).
10. Install the injector clips (D).
11. Coat the injector O-rings (E) with clean engine oil.
12. Install the injectors in the injector base (F).
13. Install the fuel rail mounting nuts (G) and the ground cable bolt (G101).
14. Connect the injector connectors.
15. Connect the quick-connect fitting (see «FUEL LINE/QUICK-CONNECT FITTING INSTALLATION»(ref-290822-S29701361102008072200000) ).
16. Turn the ignition switch to ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail will be pressurized. Repeat this two or three times, then check for fuel leakage.
17. Install the engine cover .

Scheme 471

1. Disconnect the MAP sensor connector (A).
2. Remove the MAP sensor (B).
3. Install the parts in the reverse order of removal with a new O-ring (C) coated with clean engine oil.

Scheme 472

1. Disconnect the MAF sensor/IAT sensor connector (A).
2. Remove the bolts (B).
3. Remove the MAF sensor/IAT sensor (C).
4. Install the parts in the reverse order of removal with a new O-ring (D) coated with clean engine oil.

Scheme 473

1. Remove the air cleaner (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-290823-S09685521252008072200000) ).
2. Remove the EVAP canister purge valve (see «EVAP CANISTER PURGE VALVE REPLACEMENT»(ref-290849-S23134099152008072200000) ).
3. Remove the under-hood fuse/relay box bolt, and move the assembly aside.
4. Drain the engine coolant (see «COOLANT CHECK»(ref-290817-S27864475492008072200000) ).
5. Disconnect the ECT sensor 1 connector (A).
6. Remove ECT sensor 1 (B).
7. Install the parts in the reverse order of removal with a new O-ring (C) coated with clean engine oil, then refill the radiator with engine coolant (see «COOLANT CHECK»(ref-290817-S27864475492008072200000) ).

Scheme 474

1. Drain the engine coolant (see «COOLANT CHECK»(ref-290817-S27864475492008072200000) ).
2. Remove the splash shield.
3. Disconnect the ECT sensor 2 connector (A).
4. Remove ECT sensor 2 (B).
5. Install the parts in the reverse order of removal with a new O-ring (C) coated with clean engine oil, then refill the radiator with engine coolant (see «COOLANT CHECK»(ref-290817-S27864475492008072200000) ).