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DTC P0135: A/F Sensor (Sensor 1) Heater Circuit Malfunction Honda Element YH2 рестайлинг 2

Testing & Diagnostics 9 illustrations ~1019 words

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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Scheme 386: DTC P0135: A/F Sensor (Sensor 1) Heater Circuit Malfunction
Scheme 386: DTC P0135: A/F Sensor (Sensor 1) Heater Circuit Malfunction

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  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. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0135 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 A/F sensor (Sensor 1), the A/F sensor relay (LAF), and the ECM/PCM.
  5. Turn the ignition switch to LOCK (0).
  6. Check these fuses: No. 14 OP1 (40 A) fuse in the under-hood fuse/relay box. No. 15 LAF HEATER (20 A) fuse in the under-dash fuse/relay box. Are either of the fuses blown? YES -Repair short in the wire between the A/F sensor relay (LAF) and the fuses. Also replace the blown fuses, then go to step 24 . NO -Go to step 7.
  7. Disconnect the A/F sensor (Sensor 1) 4P connector.
  8. At the sensor side, measure the resistance between A/F sensor (Sensor 1) 4P connector terminals No. 3 and No. 4. Is there 2.1-2.9 ohms at room temperature? YES -Go to step 9. NO -Go to step 23 .
  9. At the sensor side, check for continuity between A/F sensor (Sensor 1) 4P connector terminals No. 2 and No. 3, and No. 2 and No. 4 individually. Is there continuity? YES -Go to step 23 . NO -Go to step 10.
  10. Jump the SCS line with the HDS.
  11. Disconnect ECM/PCM connector A (31P).
  12. Check for continuity between ECM/PCM connector terminal A10 and body ground. Is there continuity? YES -Repair short in the wire between the ECM/PCM (A10) and the A/F sensor (Sensor 1), then go to step 24 . NO -Go to step 13.
  13. Connect A/F sensor (Sensor 1) 4P connector terminal No. 4 to body ground with a jumper wire.
  14. Check for continuity between ECM/PCM connector terminal A10 and body ground. Is there continuity? YES -Go to step 15. NO -Repair open in the wire between the ECM/PCM (A10) and the A/F sensor (Sensor 1), then go to step 24 .
  15. Remove the glove box (see «GLOVE BOX REMOVAL/INSTALLATION»(ref-290806-S13331020522008072200000) ).
  16. Remove the A/F sensor relay (LAF) (A).
  17. Connect A/F sensor (Sensor 1) 4P connector terminal No. 3 to body ground with a jumper wire.
  18. Check for continuity between A/F sensor relay (LAF) 4P connector terminal No. 1 and body ground. Is there continuity? YES -Go to step 19. NO -Repair open in the wire between the A/F sensor (Sensor 1) and the A/F sensor relay (LAF), then go to step 24 .
  19. Disconnect ECM/PCM connector E (31P).
  20. Check for continuity between ECM/PCM connector terminal E8 and body ground. Is there continuity? YES -Repair short in the wire between the ECM/PCM (E8) and the A/F sensor relay (LAF), then go to step 24 . NO -Go to step 21.
  21. Check for continuity between ECM/PCM connector terminal E8 and A/F sensor relay (LAF) 4P connector terminal No. 3. Is there continuity? YES -Go to step 22. NO -Repair open in the wire between the ECM/PCM (E8) and the A/F sensor relay (LAF), then go to step 24 .
  22. Check the A/F sensor relay (LAF) (see «POWER RELAY TEST»(ref-290831-S29773354882008072200000) ). Is the A/F sensor relay (LAF) OK? YES -Go to step 30 . NO -Replace the A/F sensor relay (LAF), then go to step 24 .
  23. Replace the A/F sensor (Sensor 1) (see «A/F SENSOR REPLACEMENT»(ref-355245-S09534232052010012100000) ).
  24. Reconnect all connectors.
  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. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0135 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 29.
  29. Monitor the OBD STATUS for DTC P0135 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 28, 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 NOT COMPLETED, keep idling until a result comes on.
  30. Reconnect all connectors.
  31. 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) ).
  32. Start the engine, and let it idle.
  33. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0135 indicated? YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the A/F sensor relay (LAF), 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 32 . If the ECM/PCM was substituted, go to step 1 . NO -Go to step 34.
  34. Monitor the OBD STATUS for DTC P0135 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 32 , 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), the A/F sensor relay (LAF), 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 32 . If the ECM/PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

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