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Idle Control System: Diagnosis Honda CR-V II рестайлинг

Testing & Diagnostics 10 illustrations ~2286 words

DTC Troubleshooting

DTCDescription
DTC P0506Idle Control System RPM Lower Than Expected
DTC P0507Idle Control System RPM Higher Than Expected

DTC INDEX

  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine, Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  4. Check for these condition in the DATA LIST with the HDS: Engine coolant temperature above 158 °F (70° C) Intake air temperature above 32 °F (0 °C) Vehicle speed is 0 mph (0 km/h) ST FUEL TRIM between 0.69 and 1.47 FSS is CLOSED
  5. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES - Go to step 6. NO - If the screen indicates PASSED, go to step 15 . If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to step 4 . and recheck.
  6. Remove the intake air duct from the throttle body.
  7. Check for dirt, carbon, or damage in the throttle bore. Is there dirt, carbon, or damage in the throttle bore? YES - If there is dirt or carbon, clean the throttle body (see «THROTTLE BODY TEST»(ref-219376-S21134135652006021400000) ), and also check for damage to the air cleaner element (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-219376-S07156876602006021400000) ), then go to step 9 . If there is damage in the throttle bore, go to step 8. NO - Check the A/C system or power steering system, then go to step 17 .
  8. Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-219376-S30644524212006021400000) ).
  9. Reset the ECM/PCM with the HDS.
  10. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-219374-S42320443812006021400000) ).
  11. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  12. Check for these condition in the DATA LIST with the HDS: Engine coolant temperature above 158 °F (70 °C) Intake air temperature above 32 °F (0 °C) Vehicle speed is 0 mph (0 km/h) ST FUEL TRIM between 0.69 and 1.47 FSS is CLOSED
  13. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs Indicated? YES - If DTC P0506 is indicated, go to step 1 . and recheck. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to step 14.
  14. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. NO - If the screen indicates FAILED, go to step 1 . and recheck. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to step 12 . and recheck.
  15. Remove the intake air duct from the throttle body.
  16. Check for dirt, carbon, or damage in the throttle bore. Is there dirt, carbon, or damage in the throttle bore? YES - If there is dirt or carbon, clean the throttle body (see «THROTTLE BODY TEST»(ref-219376-S21134135652006021400000) ), and also check for damage to the air cleaner element (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-219376-S07156876602006021400000) ), then go to step 9 . If there is damage in the throttle bore, go to step 8 . NO - Go to step 17.
  17. Recheck with different load conditions (turn on the headlights, blower motor, rear window defogger and/or A/C, changing the gear position, etc.)
  18. Monitor the OBD STATUS for DTC P0506 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Intermittent failure, system is OK at this time. NO - If the screen indicates FAILED, check the A/C system and/or power steering system, then go to step 1 . and recheck. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, go to step 17 . and recheck.
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  4. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES - Go to step 5. NO - If the screen indicates PASSED, intermittent failure, system is OK at this time. If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, recheck with different load conditions (electrical, A/C, gear position, etc.), then go to step 3 .
  5. Check for vacuum leaks at these parts: PCV valve PCV hose EVAP canister purge valve Intake manifold Throttle body Brake booster and hose Are there any leaks? YES - Repair or replace the leaking part(s), then go to step 6. NO - Go to step 6.
  6. Turn the ignition switch ON (II).
  7. Reset the ECM/PCM with the HDS.
  8. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-219374-S42320443812006021400000) ).
  9. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  10. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P0507 is indicated, check for poor connections or loose terminals at the throttle body, the throttle actuator control module, and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Go to step 11.
  11. Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body, the throttle actuator control module, and the ECM/PCM, then go to step 1 . If the screen indicates EXECUTING, let the engine idle until a result comes on. If the screen indicates OUT OF CONDITION, recheck with different load conditions (electrical, A/C, gear position, etc.), then go to step 9 .

Scheme 261

Scheme 261: A/C Signal Circuit Troubleshooting
Scheme 261: A/C Signal Circuit Troubleshooting
  1. Start the engine.
  2. Turn the blower switch on.
  3. Turn the A/C switch on.
  4. Check the A/C CLUTCH in the DATA LIST with the HDS. Does it indicate ON? YES - Go to step 5. NO - Go to the A/C pressure switch circuit troubleshooting (see «A/C PRESSURE SWITCH CIRCUIT TROUBLESHOOTING»(ref-219407-S26001199712006021400000) ).
  5. Check the A/C system. Does the A/C system operate? YES - The air conditioning system circuit is OK. NO - Go to step 6.
  6. Turn the ignition switch OFF.
  7. Turn the ignition switch ON (II).
  8. Activate the A/C CLUTCH in the INSPECTION MENU with the HDS. Is there a clicking noise from the A/C compressor clutch? YES - Do the A/C system test (see «A/C SYSTEM TEST»(ref-219407-S13517333862006021400000) ). NO - Go to step 9.
  9. Momentarily connect under-hood fuse/relay box 14P connector terminal No. 10 to body ground with a jumper wire several times. Is there clicking noise from the A/C compressor clutch? YES - Repair open in the wire between the ECM/PCM (E18) and the A/C clutch relay. 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»(ref-219370-S15199960282006021400000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-219371-S37179676622006021400000) ).

Scheme 262

Scheme 262: Alternator FR Signal Circuit Troubleshooting
Scheme 262: Alternator FR Signal Circuit Troubleshooting
  1. Start the engine, and let it idle.
  2. Monitor the ALTERNATOR in the DATA LIST with the HDS.
  3. Check if the indicated percentage varies when the headlight switch is turned on. Does the percentage vary? YES - The alternator signal circuit is OK. NO - Go to step 4.
  4. Turn the headlight switch and ignition switch OFF.
  5. Jump the SCS line with the HDS.
  6. Disconnect the alternator 4P connector.
  7. Disconnect ECM/PCM connector B (24P).
  8. Check for continuity between body ground and ECM/PCM connector terminal B13. Is there continuity? YES - Repair short in the wire between the ECM/PCM (B13) and the alternator. 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»(ref-219370-S15199960282006021400000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-219371-S37179676622006021400000) ).

Scheme 263

Scheme 263: PSP Switch Signal Circuit Troubleshooting
Scheme 263: PSP Switch Signal Circuit Troubleshooting

Scheme 264

Scheme 264
Scheme 264

Scheme 265

Scheme 265
Scheme 265

Scheme 266

Scheme 266
Scheme 266

Scheme 267

Scheme 267
Scheme 267
  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? YES - Go to step 4. 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? YES - The PSP switch signal circuit is OK. 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? YES - Replace the PSP switch. 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. Is there continuity? YES - Repair short in the wire between the ECM/PCM (E16) and the PSP switch. 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»(ref-219370-S15199960282006021400000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-219371-S37179676622006021400000) ).
  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.
  17. Check the PSPSW in the DATA LIST with the HDS. Does it change to ON? YES - Replace the PSP switch. 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.
  23. Check for continuity between body ground and ECM/PCM connector terminal E16. Is there continuity? YES - Go to step 24. 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. Is there continuity? 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»(ref-219370-S15199960282006021400000) ), then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(ref-219371-S37179676622006021400000) ). NO - Repair open in the wire between the PSP switch and G301.

Scheme 268

Scheme 268: Brake Pedal Position Switch Signal Circuit Troubleshooting
Scheme 268: Brake Pedal Position Switch Signal Circuit Troubleshooting

Scheme 269

Scheme 269
Scheme 269
  1. Turn the ignition switch ON (II).
  2. Check the BRAKE SWITCH in the DATA LIST with the HDS. Does it indicate OFF? YES - Go to step 3. NO - Inspect the brake pedal position switch (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(ref-219389-S22709159362006021400000) ).
  3. Press the brake pedal, and check the BRAKE SWITCH in the DATA LIST with the HDS. Does it change to ON? YES - The brake pedal position switch signal circuit (BKSW line) is OK. NO - Go to step 4.
  4. Turn the ignition switch OFF.
  5. Jump the SCS line with the HDS.
  6. Disconnect the brake pedal position switch 4P connector.
  7. Disconnect ECM/PCM connector E (31P).
  8. Check for continuity between ECM/PCM connector terminal E22 and body ground. Is there continuity? YES - Repair short in the wire between the ECM/PCM (E22) and the No. 7 HORN, STOP (15 A) fuse. Replace the No. 7 HORN, STOP (15 A) fuse. NO - Go to step 9.
  9. Check for continuity between ECM/PCM connector terminal E22 and brake pedal position switch 4P connector terminal No. 2. Is there continuity? YES - Repair open in the wire between the brake pedal position switch and the No. 7 HORN, STOP (15 A) fuse. Inspect the brake pedal position switch (see «BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT»(ref-219389-S22709159362006021400000) ). NO - Repair open in the wire between the ECM/PCM (E22) and the brake pedal position switch.

Idle Speed Inspection

Note. Before checking the idle speed, check these items: The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs. Ignition timing Spark plugs Air cleaner PCV system Apply the parking brake.

Scheme 270

Scheme 270: Idle Speed Inspection
Scheme 270: Idle Speed Inspection
  1. Disconnect the evaporative emission (EVAP) canister purge valve connector.
  2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
  3. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  4. Check the idle speed without load conditions: headlights, blower fan, radiator fan, and air conditioner off. Idle speed should be: IDLE SPEED SPECIFICATION (1 Of 2) M/T 650+/-50 rpm A/T 650+/-50 rpm (in Park or neutral)
  5. Let the engine idle for 1 minute with high electric load (A/C switch ON, temperature set to Max Cool, blower fan on High, rear window defogger ON, and headlights on high beam). Idle speed should be: IDLE SPEED SPECIFICATION (2 Of 2) M/T 700+/-50 rpm A/T 700+/-50 rpm (in Park or neutral) NOTE: If the idle speed is not within specification, do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-219374-S42320443812006021400000) ). If the idle is still out of specification, go to the symptom troubleshooting.
  6. Reconnect the EVAP canister purge valve connector.

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