Test Procedure

HD1: CHECK FOR DTCS
- Are DTCs P0300, P0301, P0302, P0303, P0304, P0315, or P0316 present?
- Yes: For DTCs P0300, P0301, P0302, P0303, P0304 or P0316, GO to HD2.
  For DTC P0315, GO to HD13.
- No: For all others, GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
HD2: DTCS P0300 THROUGH P0304 AND P0316: VIEW THE PCM MISFIRE FREEZE FRAME DATA
NOTE: The misfire freeze frame data may be used to determine the operating conditions when the misfire DTC was set.
- Retrieve and record any available misfire freeze frame data PID values from the PCM.
- Compare recorded freeze frame data PID values to the typical REFERENCE VALUES .
- Are any values out of range?
- Yes: REFER to the table in Z: INTERMITTENT to find corresponding circuit, and PROCEED with the intermittent diagnosis.
  GO to PINPOINT TEST Z .
- No: GO to HD3.
HD3: CHECK FOR OTHER NON-MISFIRE CONTINUOUS MEMORY DTCS
- Retrieve all continuous memory DTCs.
- Are there any non-misfire continuous memory DTCs present?
- Yes: DISREGARD the current diagnostic trouble code (DTC) at this time.
  DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
- No: GO to HD4.
HD4: CHECK FOR ANY KEY ON ENGINE OFF (KOEO) SELF-TEST DTCS
- Carry out the KOEO self-test.
- Are any KOEO DTCs present?
- Yes: DISREGARD the current diagnostic trouble code (DTC) at this time.
  DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
- No: GO to HD5.
HD5: CHECK FOR ANY KEY ON ENGINE RUNNING (KOER) DTCS
- Carry out the KOER self-test.
- Are any KOER DTCs present?
- Yes: DISREGARD the current diagnostic trouble code (DTC) at this time.
  DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
- No: GO to HD6.
HD6: CHECK THE IGNITION SYSTEM FOR CONCERNS
- GO to PINPOINT TEST JB and follow the pinpoint test direction.
- Is an ignition related concern present?
- Yes: REPAIR as necessary.
  CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD7.
HD7: CHECK THE FUEL SYSTEM FOR CONCERNS
- GO to PINPOINT TEST HC and follow the pinpoint test direction.
- Is a fuel system related concern present?
- Yes: REPAIR as necessary.
  CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD8.
HD8: CHECK THE VACUUM SYSTEM
NOTE: Some vacuum leaks can be heard.
- Visually inspect the vacuum hoses for signs of damage or deterioration. A collapsed vacuum hose may cause a blockage to one of the various actuators or sensors. If a blockage is found remove the blockage or install new parts as necessary.
- Is the vehicle vacuum system OK?
- Yes: GO to HD9.
- No: REPAIR the vacuum system.
  CLEAR the DTCs. REPEAT the self-test.
HD9: MONITOR THE ELECTRIC EXHAUST GAS RECIRCULATION (EEGR) SYSTEM RELATED PIDS
- Key ON, engine running.
- Bring the engine to normal operating temperature.
- Access the PCM and monitor the EGRMC1, EGRMC2, EGRMC3, EGRMC4 and MAP PIDs.
- Record the PID values with the engine idling.
- Key ON, engine OFF.
- Record the PID values with the engine off.
- Compare the recorded PID values to the typical REFERENCE VALUES .
- Are any values out of range?
- Yes: GO to PINPOINT TEST KD and diagnose the EGR system.
- No: GO to HD10.
HD10: RECREATE THE MISFIRE SYMPTOM WITH EEGR SYSTEM DISABLED
NOTE: The PCM may store EGR system related DTCs during this procedure.

NOTE: To recreate the original conditions that set the DTC or caused the symptom, the vehicle may require driving.
- Key in OFF position.
- EEGR Assembly connector disconnected.
- Access the misfire freeze frame data (if available) and record the operating conditions.
- Obtain information from the customer information worksheet or any other available data from the customer.
- Recreate the misfire symptom using the freeze frame and customer information.
- Can the symptom be recreated?
- Yes: GO to HD11.
- No: REMOVE and INSPECT the EEGR for signs of contamination, unusual wear, carbon deposits, binding or other damage. REFER to the ENGINE EMISSION CONTROL -- HYBRID for more EGR system information. REPAIR as necessary.
  CLEAR the DTCs. REPEAT the self-test.
HD11: CHECK FOR BASE ENGINE CONCERNS
NOTE: The engine temperature may affect the results.
- This step determines if there are any base engine concerns that may have caused the misfire DTC or drive concern.
- Carry out the following tests in order to evaluate base engine integrity:
  - Carry out engine compression and leakdown tests. Refer to the MECHANICAL - HYBRID
  - Carry out valve train analysis. Refer to the MECHANICAL - HYBRID
  - Check the positive crankcase ventilation (PCV) system. Refer to the MECHANICAL - HYBRID
  - Check for possible leakage points. Refer to the MECHANICAL - HYBRID
- Is a concern present?
- Yes: REPAIR as necessary. REFER to the MECHANICAL - HYBRID .
  CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD12.
HD12: CHECK THE CRANKSHAFT POSITION (CKP) HARNESS FOR INTERMITTENT CONCERNS
NOTE: Chafed CKP wires or other physical damage to the harness may cause an intermittent short in the CKP circuit.
- Key in OFF position.
- Visually check for chafed CKP wires or other physical damage to the CKP harness.
- Is a concern present?
- Yes: REPAIR as necessary.
  CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD13.
HD13: DTC P0315: CHECK THE PHYSICAL CONDITION OF THE CRANKSHAFT PULSE WHEEL
NOTE: DTC P0315 is set when the PCM is unable to learn and correct for the mechanical variations in the crankshaft pulse wheel tooth spacing (the allowable correction tolerances are exceeded).
- Inspect the crankshaft pulse wheel for damaged teeth.
- Inspect the crankshaft pulse wheel for wobble.
- Check for a loose crankshaft pulse wheel.
- Check the CKP sensor for damage.
- Are the CKP sensor and crankshaft pulse wheel OK?
- Yes: If the CKP is installed properly, GO to HD14.
- No: REPAIR as necessary. REFER to the MECHANICAL - HYBRID to check for correct CKP sensor installation. RESET the keep alive memory (KAM). REFER to RESETTING THE KEEP ALIVE MEMORY (KAM) .
HD14: CHECK THE DAMPER AND PULLEY ASSEMBLY
- Observe the crank pulley for wobble.
- Examine the electronic ignition (El) pulse ring fastened to the harmonic dampener.
- Does the crank pulley wobble or is the pulse ring loose or damaged?
- Yes: DISCONNECT the negative battery terminal for 5 minutes to allow the PCM to learn the new profile. REFER to the BATTERY AND CABLES . INSTALL a new pulley or damper assembly.
  CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD15.
HD15: CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Visually inspect for:
  - pushed out pins
  - corrosion
- Connect all the PCM connectors and make sure they seat correctly.
- Carry out the PCM self-test and verify the concern is still present.
- Is the concern still present?
- Yes: INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
- No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.