Engine Control System (Diagnostic Codes (P300-P1423) (Hybrid): Diagnosis Toyota Highlander II рестайлинг

INSPECTION PROCEDURE

HINT

1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the ECM as freeze frame data.
4. If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors is considered to be a possible cause of the problem: There was insufficient fuel volume in the tank. Improper fuel is used. The spark plugs have been contaminated.
5. After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to Cylinder #6 Misfire Count).
6. Be sure to confirm that no misfiring cylinder DTCs are set again by conducting the confirmation driving pattern after finishing repairs.
7. For 6 cylinder engine, the ECM intentionally does not set the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P0300 is set. In the event of DTC P0300 being present, perform the following operations: Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not set.
8. When one of Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-20%, the air fuel ratio may be Rich (-20% or less) or Lean (+20% or more).
9. When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfires have occurred only while the engine is being warmed up.
10. An extremely unbalanced drive wheel which causes body vibration may cause misfire DTCs detection.

Scheme 1009

Scheme 1010

Scheme 1011

Scheme 1012

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE CODES) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 are output A DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 are output, troubleshoot those DTCs first. B --> See step 44 A: Go to next step
2. CHECK PCV HOSE (HOSE CONNECTIONS) Check the PCV hose connections, refer to «ON-VEHICLE INSPECTION»(ref-426783-S32827628272011101200000) . OK PCV hose is connected correctly and is not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
4. READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. Result Data List Techstream Display Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure that the vehicle is stopped and either idling or being revved within 2500 RPM. NEXT: Go to next step
6. READ VALUE USING TECHSTREAM (MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on (Step "A"). Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Enter the following menus: Powertrain / Engine and ECT / Data List / Cylinder #1 (to #6) Misfire Count (Step "B"). Read each value for Cylinder #1 (to #6) Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform the following procedure: Start the engine and let it idle. Move the shift lever to D. Check the Cylinder #1 (to #6) Misfire Count. If misfire counts are still not displayed, perform steps ("A") and ("B"). Drive the vehicle while satisfying the Misfire RPM and Misfire Load values noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedure above. Read Cylinder #1 (to #6) Misfire Count or the DTCs displayed on the Techstream. Result Misfire Count Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If the Coolant Temp value of the freeze frame data is below 75°C (167°F), the misfire may be detected only when the engine is cold. If Engine Run Time value of the freeze frame data is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 20 A: Go to next step
7. CHECK SPARK PLUG Inspect the spark plug, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-426772-S22666911242011101200000) . NG --> See step 45 OK: Go to next step
8. CHECK FOR SPARK AND IGNITION Perform a spark test, refer to «ON-VEHICLE INSPECTION»(ref-426772-S15542630702011101200000) . WARNING: During the test, disconnect all fuel injector assembly connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 38 OK: Go to next step
9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 10»(ref-426765-S34632952792011101200000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
10. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector assembly connectors. Turn the ignition switch ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B65-2 - Body ground Ignition switch ON 11 to 14 V B66-2 - Body ground Ignition switch ON 11 to 14 V B67-2 - Body ground Ignition switch ON 11 to 14 V B68-2 - Body ground Ignition switch ON 11 to 14 V B69-2 - Body ground Ignition switch ON 11 to 14 V B70-2 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) Reconnect the fuel injector assembly connectors. NG --> See step 46 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B65-1 - B57-19 (#10) Always Below 1 ohms B66-1 - B57-20 (#20) Always Below 1 ohms B67-1 - B57-53 (#30) Always Below 1 ohms B68-1 - B57-49 (#40) Always Below 1 ohms B69-1 - B57-21 (#50) Always Below 1 ohms B70-1 - B57-52 (#60) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B65-1 or B57-19 (#10) - Body ground Always 10 kohms or higher B66-1 or B57-20 (#20) - Body ground Always 10 kohms or higher B67-1 or B57-53 (#30) - Body ground Always 10 kohms or higher B68-1 or B57-49 (#40) - Body ground Always 10 kohms or higher B69-1 or B57-21 (#50) - Body ground Always 10 kohms or higher B70-1 or B57-52 (#60) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) *b Front view of wire harness connector (to ECM) Reconnect the fuel injector assembly connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK: Go to next step
12. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor), refer to «INSPECTION»(ref-426781-S11577686352011101200000) . NG --> See step 47 OK: Go to next step
13. INSPECT INTAKE SYSTEM Check the intake system for vacuum leaks, refer to «ON-VEHICLE INSPECTION»(ref-426782-S19577763962011101200000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
14. CHECK FUEL PRESSURE Check the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-426786-S07299980892011101200000) . NG --> See step 42 OK: Go to next step
15. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient temperature. With warm engine Between 75°C and 95°C (167°F and 203°F). NG --> See step 48 OK: Go to next step
16. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 2500 RPM. Standard Between 6 gm/s and 17 gm/s (shift lever: P). HINT: when the vehicle is stopped, the engine is being raced with the accelerator pedal depressed 60% or more NG --> See step 33 OK: Go to next step
17. CHECK VALVE TIMING HINT: Check the valve timing, refer to «PROCEDURE - Step 5»(ref-426784-S37226468072011101200000) . NG --> See step 49 OK: Go to next step
18. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position. Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when Active Test is completed. OK MAP and idling condition change in response to EGR step position as follows. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stall MAP (Data List) 20 to 40 kPa (150 to 300 mmHg) (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in EGR valve. OK --> See step 33 NG --> See step 19
19. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly, refer to «REMOVAL»(ref-426771-S16321691292011101200000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. Reinstall the EGR valve assembly, refer to «INSTALLATION»(ref-426771-S21548001202011101200000) . OK --> See step 33 NG --> See step 50
20. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-426782-S32913494442011101200000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
21. CHECK FUEL PRESSURE Check the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-426786-S07299980892011101200000) . NG --> See step 42 OK: Go to next step
22. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient air temperature. With warm engine Between 75°C and 95°C (167°F and 203°F). NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
23. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 2500 RPM. Standard Between 6 gm/s and 17 gm/s (shift lever: P). HINT: when the vehicle is stopped, the engine is being raced with the accelerator pedal depressed 60% or more NG --> See step 33 OK: Go to next step
24. CHECK VALVE TIMING HINT: Check the valve timing, refer to «PROCEDURE - Step 5»(ref-426784-S37226468072011101200000) . NG --> ADJUST VALVE TIMING OK: Go to next step
25. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position. Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when Active Test is completed. OK MAP and idling condition change in response to EGR step position as follows. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stall MAP (Data List) 20 to 40 kPa (150 to 300 mmHg) (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in EGR valve. OK --> See step 27 NG --> See step 26
26. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly, refer to «REMOVAL»(ref-426771-S16321691292011101200000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. Reinstall the EGR valve assembly, refer to «INSTALLATION»(ref-426771-S21548001202011101200000) . NG --> See step 51 OK: Go to next step
27. CHECK SPARK PLUG Inspect the spark plug, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-426772-S22666911242011101200000) . NG --> See step 52 OK: Go to next step
28. CHECK FOR SPARK AND IGNITION (SPARK TEST) Perform a spark test, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-426772-S22666911242011101200000) . WARNING: During the test, disconnect all fuel injector assembly connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 38 OK: Go to next step
29. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 10»(ref-426765-S34632952792011101200000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
30. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector assembly connectors. Turn the ignition switch ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B65-2 - Body ground Ignition switch ON 11 to 14 V B66-2 - Body ground Ignition switch ON 11 to 14 V B67-2 - Body ground Ignition switch ON 11 to 14 V B68-2 - Body ground Ignition switch ON 11 to 14 V B69-2 - Body ground Ignition switch ON 11 to 14 V B70-2 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) Reconnect the fuel injector assembly connectors. NG --> See step 53 OK: Go to next step
31. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B65-1 - B57-19 (#10) Always Below 1 ohms B66-1 - B57-20 (#20) Always Below 1 ohms B67-1 - B57-53 (#30) Always Below 1 ohms B68-1 - B57-49 (#40) Always Below 1 ohms B69-1 - B57-21 (#50) Always Below 1 ohms B70-1 - B57-52 (#60) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B65-1 or B57-19 (#10) - Body ground Always 10 kohms or higher B66-1 or B57-20 (#20) - Body ground Always 10 kohms or higher B67-1 or B57-53 (#30) - Body ground Always 10 kohms or higher B68-1 or B57-49 (#40) - Body ground Always 10 kohms or higher B69-1 or B57-21 (#50) - Body ground Always 10 kohms or higher B70-1 or B57-52 (#60) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) *b Front view of wire harness connector (to ECM) Reconnect the fuel injector assembly connectors. Reconnect the ECM connector. NG --> REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK: Go to next step
32. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor), refer to «INSPECTION»(ref-426781-S11577686352011101200000) . NG --> See step 54 OK: Go to next step
33. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM, refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-426649-S19284667942011101200000) . HINT: Repair any problems. NEXT: Go to next step
34. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Turn the ignition switch off and wait for 30 seconds. Turn the ignition switch ON and turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305 or P0306. Check the DTC judgment result. RESULT Display (DTC Output) Proceed to ABNORMAL (P0300, P0301, P0302, P0303, P0304, P0305 or P0306 output) A NORMAL (No DTC output) B B --> END A: Go to next step
35. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B62-5 (VG) - B57-121 (VG) Always Below 1 ohms B62-4 (E2G) - B57-120 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-5 (VG) or B57-121 (VG) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) *b Front view of wire harness connector (to ECM) Reconnect the mass air flow meter sub-assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) OK: Go to next step
36. REPLACE INTAKE MASS AIR FLOW METER SUB-ASSEMBLY Replace the mass air flow meter sub-assembly, refer to «REMOVAL»(ref-426780-S31143574432011101200000) . HINT: If the results of the inspections performed in steps 16 and 23 indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly. NEXT: Go to next step
37. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Turn the ignition switch off and wait for 30 seconds. Turn the ignition switch ON and turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305 or P0306. Check the DTC judgment result. RESULT Display (DTC Output) Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303, P0304, P0305 or P0306 output) B B --> See step 55 A --> END
38. CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER Change the installed spark plug to a known good spark plug. Perform a spark test, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-426772-S22666911242011101200000) . WARNING: During the test, disconnect all fuel injector assembly connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 40 OK --> See step 39
39. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-426787-S18760883532011101200000)
40. CHANGE TO NORMAL IGNITION COIL ASSEMBLY AND CHECK SPARK OF MISFIRING CYLINDER Change the installed ignition coil assembly to a known good ignition coil assembly. Perform a spark test, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-426772-S22666911242011101200000) . WARNING: During the test, disconnect all fuel injector assembly connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 56 OK --> See step 41
41. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-426787-S18760883532011101200000)
42. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 43
43. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-426781-S29046169732011101200000)
44. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-426655-S36857909882011101200000)
45. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-426787-S18760883532011101200000)
46. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-426777-S11372944682011101200000)
47. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-426781-S31021276762011101200000)
48. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-426780-S33883923852011101200000)
49. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-426765-S27287182982011101200000)
50. REPLACE EGR VALVE ASSEMBLY. Refer to «REMOVAL»(ref-426771-S16321691292011101200000)
51. REPLACE EGR VALVE ASSEMBLY. Refer to «REMOVAL»(ref-426771-S16321691292011101200000)
52. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-426787-S18760883532011101200000)
53. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-426777-S11372944682011101200000)
54. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-426781-S31021276762011101200000)
55. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)
56. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

HINT

1. DTCs P0327 and P0328 are for the bank 1 knock control sensor circuit.
2. DTCs P0332 and P0333 are for the bank 2 knock control sensor circuit.
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
4. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
5. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 1013

Scheme 1014

Scheme 1015

1. INSPECT ECM (KNK1, KNK2 VOLTAGE) Disconnect the knock control sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition d2-1 - d2-2 Ignition switch ON 4.5 to 5.5 V d1-1 - d1-2 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to Knock Control Sensor) Reconnect the knock control sensor connector. NG --> See step 3 OK: Go to next step
2. INSPECT KNOCK CONTROL SENSOR Remove the knock control sensor. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 120 to 280 kohms TEXT IN ILLUSTRATION *1 Ohmmeter *a Component without harness connected (Knock Control Sensor) Reinstall the knock control sensor. NG --> See step 4 OK --> See step 5
3. CHECK HARNESS AND CONNECTOR (KNOCK CONTROL SENSOR - ECM) Disconnect the knock control sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition d2-2 - B57-116 (KNK1) Always Below 1 ohms d2-1 - B57-117 (EKNK) Always Below 1 ohms d1-2 - B57-83 (KNK2) Always Below 1 ohms d1-1 - B57-84 (EKN2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition d2-2 or B57-116 (KNK1) - Body ground Always 10 kohms or higher d2-1 or B57-117 (EKNK) - Body ground Always 10 kohms or higher d1-2 or B57-83 (KNK2) - Body ground Always 10 kohms or higher d1-1 or B57-84 (EKN2) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to Knock Control Sensor) *b Front view of wire harness connector (to ECM) Reconnect the knock control sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (KNOCK CONTROL SENSOR - ECM) OK --> See step 5
4. REPLACE KNOCK CONTROL SENSOR. Refer to «REMOVAL»(ref-426780-S16249416122011101200000)
5. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

HINT

1. After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor. Installation condition of the camshaft position sensor Installation condition of the camshaft Connection of the camshaft position sensor connector
2. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
3. Check the engine speed. The engine speed can be checked using the Techstream. Follow the procedure below: Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. The engine speed may be indicated as zero despite the engine rotating normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
4. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 1016

Scheme 1017

Scheme 1018

1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. Standard Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the crankshaft position sensor circuit. NG --> See step 2 OK --> See step 6
2. INSPECT CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 Cold 1630 to 2740 ohms 1 - 2 Hot 2065 to 3225 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Crankshaft Position Sensor) NOTE: Terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°C (14 to 122°F). "Hot" means approximately 50 to 100°C (122 to 212°F). Reconnect the crankshaft position sensor connector. NG --> See step 7 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B73-1 - B57-76 (NE+) Always Below 1 ohms B73-2 - B57-77 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B73-1 or B57-76 (NE+) - Body ground Always 10 kohms or higher B73-2 or B57-77 (NE-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Crankshaft Position Sensor) *b Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) OK: Go to next step
4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation condition. OK Sensor is installed correctly. NG --> See step 8 OK: Go to next step
5. CHECK CRANKSHAFT (TEETH OF CRANK ANGLE SENSOR PLATE) Check the teeth of the crank angle sensor plate. OK Crank angle sensor plate does not have any cracks or deformation. NG --> See step 9 OK --> See step 10
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-426655-S18110562592011101200000)
7. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-426780-S29198761862011101200000)
8. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-426780-S00019606752011101200000)
9. REPLACE CRANKSHAFT. Refer to «REMOVAL»(ref-426780-S29198761862011101200000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 1019

Scheme 1020

Scheme 1021

Scheme 1022

1. CHECK VVT SENSOR (SENSOR POWER SOURCE) Disconnect the VVT sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B74-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V B75-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to VVT Sensor) Reconnect the VVT sensor connector. NG --> See step 7 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM) Disconnect the VVT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B74-1 (VVR+) - B57-109 (VV1+) Always Below 1 ohms B74-2 (VVR-) - B57-110 (VV1-) Always Below 1 ohms B75-1 (VVL+) - B57-112 (VV2+) Always Below 1 ohms B75-2 (VVL-) - B57-111 (VV2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B74-1 (VVR+) or B57-109 (VV1+) - Body ground Always 10 kohms or higher B74-2 (VVR-) or B57-110 (VV1-) - Body ground Always 10 kohms or higher B75-1 (VVL+) or B57-112 (VV2+) - Body ground Always 10 kohms or higher B75-2 (VVL-) or B57-111 (VV2-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to VVT Sensor) *b Front view of wire harness connector (to ECM) Reconnect the VVT sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR - ECM) OK: Go to next step
3. CHECK SENSOR INSTALLATION (VVT SENSOR) Check the VVT sensor installation. OK Sensor is installed correctly. NG --> See step 8 OK: Go to next step
4. CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF PLATE) Check the teeth of the signal plate. OK Sensor plate teeth do not have any cracks or deformation. NG --> See step 9 OK: Go to next step
5. REPLACE VVT SENSOR Replace the VVT sensor, refer to «REMOVAL»(ref-426780-S05381036062011101200000) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 AND/OR P0348) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Enter the following menus: Powertrain / Engine and ECT / DTC. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0340, P0342, P0343, P0345, P0347, or P0348 is output B HINT: If the engine does not start, replace the ECM. B --> See step 10 A --> END
7. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM) Disconnect the VVT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B74-3 (VC) - B57-78 (VCV1) Always Below 1 ohms B75-3 (VC) - B57-79 (VCV2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B74-3 (VC) or B57-78 (VCV1) - Body ground Always 10 kohms or higher B75-3 (VC) or B57-79 (VCV2) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to VVT Sensor) *b Front view of wire harness connector (to ECM) Reconnect the VVT sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR - ECM) OK --> See step 10
8. SECURELY REINSTALL VVT SENSOR. Refer to «INSTALLATION»(ref-426780-S26125976352011101200000)
9. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to «REMOVAL»(ref-426765-S23975534152011101200000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 1023

Scheme 1024

Scheme 1025

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to One of DTCs P0351, P0352, P0353, P0354, P0355, P0356 is output. A Some of DTCs P0351, P0352, P0353, P0354, P0355, P0356 are output. B B --> See step 5 A: Go to next step
2. PERFORM SIMULATION TEST Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Change the arrangement of the ignition coil assemblies. NOTE: Do not change the location of the connectors. Perform a simulation test. Result Result Proceed to Same DTCs are output (same as DTCs that were cleared) A Other DTCs are output B B --> See step 6 A: Go to next step
3. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil assembly connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B78-1 (+B) - B78-4 (GND) Ignition switch ON 11 to 14 V B31-1 (+B) - B31-4 (GND) Ignition switch ON 11 to 14 V B32-1 (+B) - B32-4 (GND) Ignition switch ON 11 to 14 V B33-1 (+B) - B33-4 (GND) Ignition switch ON 11 to 14 V B34-1 (+B) - B34-4 (GND) Ignition switch ON 11 to 14 V B35-1 (+B) - B35-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) Reconnect the ignition coil assembly connectors. NG --> See step 5 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the ignition coil assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B78-3 (IGT1) - B57-138 (IGT1) Always Below 1 ohms B31-3 (IGT2) - B57-106 (IGT2) Always Below 1 ohms B32-3 (IGT3) - B57-139 (IGT3) Always Below 1 ohms B33-3 (IGT4) - B57-107 (IGT4) Always Below 1 ohms B34-3 (IGT5) - B57-105 (IGT5) Always Below 1 ohms B35-3 (IGT6) - B57-137 (IGT6) Always Below 1 ohms B78-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms B31-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms B32-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms B33-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms B34-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms B35-2 (IGF) - B57-54 (IGF1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B78-3 (IGT1) or B57-138 (IGT1) - Body ground Always 10 kohms or higher B31-3 (IGT2) or B57-106 (IGT2) - Body ground Always 10 kohms or higher B32-3 (IGT3) or B57-139 (IGT3) - Body ground Always 10 kohms or higher B33-3 (IGT4) or B57-107 (IGT4) - Body ground Always 10 kohms or higher B34-3 (IGT5) or B57-105 (IGT5) - Body ground Always 10 kohms or higher B35-3 (IGT6) or B57-137 (IGT6) - Body ground Always 10 kohms or higher B78-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher B31-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher B32-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher B33-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher B34-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher B35-2 (IGF) or B57-54 (IGF1) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) *b Front view of wire harness connector (to ECM) Reconnect the ignition coil assembly connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) OK --> See step 7
5. INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT) Disconnect the ignition coil assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B78-4 (GND) - Body ground Always Below 1 ohms B31-4 (GND) - Body ground Always Below 1 ohms B32-4 (GND) - Body ground Always Below 1 ohms B33-4 (GND) - Body ground Always Below 1 ohms B34-4 (GND) - Body ground Always Below 1 ohms B35-4 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY)
6. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-426787-S18760883532011101200000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

HINT

1. By using the Control the EGR Step Position Active Test, the operation of the EGR valve can be checked.
2. If the EGR valve is normal, the engine condition is as follows: The engine idles steady while the EGR valve is fully closed. When the EGR valve is opened using the Active Test, the Data List values will change as shown in the table below. Data List Change Engine Speed Idle becomes rough MAP Pressure rises
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 1026

Scheme 1027

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0401) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTC. Result Result Proceed to DTC P0401 is output A DTC P0401 and other DTCs are output B B --> See step 12 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position. Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during Active Test. Be sure to return the EGR valve to step 0 when Active Test is completed. OK MAP and idling condition change in response to EGR step position as follows. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stall MAP (Data List) - MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed Result Result Proceed to Within standard range A Outside standard range B B --> See step 4 A: Go to next step
3. INSPECT EGR VALVE ASSEMBLY Check if the EGR valve are clogged with deposits. Check if the EGR valve is closed. OK EGR valve is closed and no deposits. Result Result Proceed to NG A OK B B --> See step 5 A: Go to next step
4. REPLACE EGR VALVE ASSEMBLY Replace EGR valve assembly, refer to «REMOVAL»(ref-426771-S16321691292011101200000) . NEXT: Go to next step
5. CHECK FOR DEPOSIT (EGR VALVE ASSEMBLY TO INTAKE PORTS) Check for exhaust leaks at each connection point. Check for cracks, damage, and blockage of the pipes between the intake manifold converter and the EGR valve assembly. This check may require the removal of components. Check if there is a build-up of deposits in the EGR valve or pipes. OK No deposits NG --> REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA OK: Go to next step
6. CHECK FOR DEPOSIT (EXHAUST MANIFOLD CONVERTER TO EGR VALVE ASSEMBLY) Check for exhaust leaks at each connection point. Check for cracks, damage, and blockage of the pipes between the exhaust manifold converter and the EGR valve assembly. This check may require the removal of components. Check if there is a build-up of deposits in the EGR valve or pipes. OK No deposits HINT: This check may require the removal of components. Check for blockage of the EGR valve assembly. NG --> REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA OK: Go to next step
7. INSPECT EGR COOLER ASSEMBLY Check for blockage of the EGR cooler assembly. NG --> REPLACE EGR COOLER ASSEMBLY OK: Go to next step
8. READ VALUE USING TECHSTREAM (MANIFOLD ABSOLUTE PRESSURE SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP. Read the MAP value. Standard Switch Condition Techstream Display Ignition switch ON 80 to 110 kPa (600 to 825 mmHg) Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP. Read the MAP value at idling the engine with the A/C switch and all accessory switches should be off and shift lever in P or N. Standard Engine Condition Tester Display Idling 20 to 40 kPa (150 to 300 mmHg) Result Result Proceed to NG A OK B B --> See step 11 A: Go to next step
9. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-426782-S32913494442011101200000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
10. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Replace the manifold absolute pressure sensor, refer to «REMOVAL»(ref-426780-S33332903882011101200000) . NEXT: Go to next step
11. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Turn the ignition switch off and wait for 30 seconds. Turn the ignition switch to ON and turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. HINT: The A/C switch and all accessory switches should be off in P or N. Drive the vehicle at 37 mph (60 km/h) for 5 minutes or more. Idle the engine for 30 seconds or more. Accelerate the vehicle at 37 mph (60 km/h)) then select the S4 range with the shift lever in S. WARNING: Strictly observe speed limits and traffic laws when performing the confirmation drive pattern. Perform fuel cut operation for 5 seconds or more, with the accelerator pedal fully released. HINT: If the deceleration was not completed, perform the Confirmation Driving Pattern again. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read Pending DTC. If the pending DTC is output, the system is malfunction. HINT: If a pending DTC is not output, perform the following procedure. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0401. Check the DTC judgment result. Result Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed You should perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the DTC judgment result is INCOMPLETE or UNKNOWN and no pending DTC is output, accelerate the vehicle again at 37 mph (60 km/h) then select the S4 range with the shift lever in S, perform fuel cut operation for 5 seconds or more with the accelerator pedal fully released, and check the DTC judgment result. NEXT --> END
12. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-426655-S36857909882011101200000)

HINT

Read freeze frame data using an Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 1028

Scheme 1029

Scheme 1030

1. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position. Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when Active Test is completed. OK MAP and idling condition change in response to EGR step position as follows. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stall MAP (Data List) 20 to 40 kPa (150 to 300 mmHg) (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in EGR valve. Result Result Proceed to Within standard range A Outside standard range B B --> See step 2 A --> See step 5
2. INSPECT EGR VALVE ASSEMBLY Disconnect the EGR valve assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B1) - 1 (EGR4) 20°C (68°F) 18 to 22 ohms 2 (+B1) - 3 (EGR2) 20°C (68°F) 18 to 22 ohms 5 (+B2) - 4 (EGR1) 20°C (68°F) 18 to 22 ohms 5 (+B2) - 6 (EGR3) 20°C (68°F) 18 to 22 ohms TEXT IN ILLUSTRATION *a Component without harness connected (EGR Valve Assembly) Reconnect the EGR valve assembly connector. NG --> See step 6 OK: Go to next step
3. INSPECT EGR VALVE ASSEMBLY (+B1 OR +B2 VOLTAGE) Disconnect the EGR valve assembly connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B79-2 (+B1) - Body ground Ignition switch ON 11 to 14 V B79-5 (+B2) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to EGR Valve Assembly) Reconnect the EGR valve assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EGR VALVE ASSEMBLY - EFI MAIN RELAY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ECM - EGR VALVE ASSEMBLY) Disconnect the EGR valve assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B57-14 (EGR1) - B79-4 (EGR1) Always Below 1 ohms B57-13 (EGR2) - B79-3 (EGR2) Always Below 1 ohms B57-12 (EGR3) - B79-6 (EGR3) Always Below 1 ohms B57-15 (EGR4) - B79-1 (EGR4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B57-14 (EGR1) or B79-4 (EGR1) - Body ground Always 10 kohms or higher B57-13 (EGR2) or B79-3 (EGR2) - Body ground Always 10 kohms or higher B57-12 (EGR3) or B79-6 (EGR3) - Body ground Always 10 kohms or higher B57-15 (EGR4) or B79-1 (EGR4) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to EGR Valve Assembly) *b Front view of wire harness connector (to ECM) Reconnect the EGR valve assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - EGR VALVE ASSEMBLY) OK --> See step 7
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-426655-S18110562592011101200000)
6. REPLACE EGR VALVE ASSEMBLY. Refer to «REMOVAL»(ref-426771-S16321691292011101200000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-426780-S20256408682011101200000)

CONDITIONING FOR SENSOR TESTING

HINT

Perform the operation with the engine speeds and time durations described below prior to checking the waveforms of the air fuel ratio and heated oxygen sensors. This is in order to activate the sensors sufficiently to obtain the appropriate inspection results.

Scheme 1031

1. Connect the Techstream to the DLC3 [A].
2. Turn the ignition switch to ON and turn the Techstream on.
3. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) .
4. Start the engine and warm it up with all the accessories switched off, until the engine coolant temperature stabilizes [B].
5. Run the engine at an engine speed of 2500 RPM for at least 3 minutes [C].
6. While running the engine at 2500 RPM and 1500 RPM for 2 seconds, check the waveforms of the air fuel ratio and heated oxygen sensors using the Techstream [D]. HINT: If either of the voltage outputs of the air fuel ratio or heated oxygen sensor does not fluctuate, or either of the sensors makes a noise, the sensor may be malfunctioning. If the voltage outputs of both the sensors remain lean or rich, the air fuel ratio may be extremely lean or rich. In such cases, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor. If the three-way catalytic converter has deteriorated, the heated oxygen sensor (located behind the three-way catalytic converter) voltage output fluctuates up and down frequently, even under normal driving conditions (active air fuel ratio control is not performed).

Scheme 1032

Scheme 1033

Scheme 1034

Scheme 1035

1. AIR FUEL RATIO CONTROL HINT: Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning. The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume). Monitor the voltage outputs of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream. HINT: The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%. Each sensor reacts in accordance with increases and decreases in the fuel injection volume. Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) +25% Rich Less than 3.1 V AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) -12.5% Lean More than 3.4 V O2S B1S2 or O2S B2S2 (Heated oxygen) +25% Rich More than 0.55 V O2S B1S2 or O2S B2S2 (Heated oxygen) -12.5% Lean Less than 0.4 V NOTE: The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich) Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2. HINT: After performing repairs, drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern and check if DTC P0420 or P0430 is output again. If a DTC is output again, replace the catalyst if it has not been replaced already. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission. Bank 2 refers to the bank that does not include the No. 1 cylinder. Sensor 1 refers to the sensor closest to the engine assembly. Sensor 2 refers to the sensor farthest away from the engine assembly.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to the EVAP System, refer to INSPECTION PROCEDURE .

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

The canister pressure sensor is built into the canister pump module.

Note. When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 1036

Scheme 1037

Scheme 1038

Scheme 1039

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / Vapor Pressure Pump. Read the EVAP (evaporative emission) pressure displayed on the Techstream. Result Display (DTC Output) Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Less than 45 kPa (338 mmHg) Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 More than 120 kPa (900 mmHg) Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Open in ECM circuit B B --> See step 5 C --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A67-52 (PPMP) - Body ground Always Below 10 ohms Wire harness/connector (ECM - canister pressure sensor) Short in canister pressure sensor circuit A 10 kohms or higher Wire harness/connector (ECM - canister pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 8 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) - - Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A67-52 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A Below 10 ohms Short in wire harness/connector (ECM - canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. A --> See step 6 B --> See step 7
4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-426777-S34215481402011101200000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Turn the ignition switch to ON. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition O42-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V O42-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V Standard Resistance (Check for Open) Tester Connection Condition Specified Condition O42-2 (SGND) - Body ground Always Below 100 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Result Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - canister pressure sensor) B Reconnect the canister pump module connector. B --> See step 7 A: Go to next step
6. REPLACE CANISTER Replace the canister, refer to «REMOVAL»(ref-426771-S12975672052011101200000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Vent Hose *3 Air Inlet Port - - *a Inspection Area (Check for Disconnection and/or Cracks) - - NEXT --> See step 9
7. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER PUMP MODULE - ECM) HINT: If the exhaust tail pipe assembly has been removed, go to the next step before reinstalling it. NEXT --> See step 9
8. REPLACE ECM Replace the ECM, refer to «REMOVAL»(ref-426780-S20256408682011101200000) . NEXT --> See step 9
9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-426655-S13741789592011101200000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Put the engine in inspection mode, refer to «INSPECTION MODE PROCEDURE»(ref-426649-S00975887492011101200000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0451, P0452 or P0453. Check the DTC judgment result. HINT: If DTC judgment result is NORMAL, the repair has been successfully completed. NEXT --> END

HINT

1. The following conditions may also cause DTC P0505 to be set: The floor carpet overlapping onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open. The accelerator pedal being not fully released.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. Refer to "Data List / Active Test" [Engine Speed, ISC Feedback Value and ISC Learning Value], refer to «DATA LIST / ACTIVE TEST»(ref-426655-S42617637412011101200000) .

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

1. DTC P050B may be set when the engine shows the symptom as listed below. If necessary, check the trouble area as listed below. Symptom Factor Trouble Area Low idle speed at engine cold. Excessive engine friction Engine oil deterioration Drive belt tension Generator assembly Rough idle at engine cold. Abnormal combustion Fuel quality
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 1040

1. CHECK HARNESS AND CONNECTOR (EFI MAIN FUSE - ECM) Disconnect the ECM connector. Remove the EFI MAIN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2 (EFI MAIN fuse) - A67-15 (BATT) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2 (EFI MAIN fuse) or A67-15 (BATT) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block - - *a Front view of wire harness connector (to ECM) - - Reconnect the ECM connector. Reinstall the EFI MAIN fuse. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI MAIN FUSE - ECM) OK: Go to next step
2. INSPECT BATTERY Check the battery voltage. Battery voltage 11 to 14 V NG --> See step 4 OK: Go to next step
3. CHECK BATTERY TERMINAL Check that the battery terminals are not loose or corroded. OK Battery terminals are not loose or corroded. NG --> REPAIR OR REPLACE BATTERY TERMINAL OK --> See step 5
4. REPLACE BATTERY. Refer to «REMOVAL»(ref-426789-S39437836232011101200000)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-426655-S18110562592011101200000)

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Refer to the EVAP System, refer to INSPECTION PROCEDURE .

Scheme 1041

1. P1420: EVAP (evaporative emission) small leak In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than the second reference pressure, the ECM determines that the EVAP system has a small leakage, illuminates the MIL and sets the DTC (2 trip detection logic).
2. P1421: EVAP gross leak In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than [second reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the EVAP system has a large leakage, illuminates the MIL and sets the DTC (2 trip detection logic).

Refer to the EVAP System, refer to INSPECTION PROCEDURE .

Scheme 1042

1. P1422: Fuel tank small leak In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than the third reference pressure, the ECM determines that the fuel tank has a small leakage. The ECM illuminates the MIL and sets the DTC (2 trip detection logic).
2. P1423: Fuel tank gross leak In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than [third reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the fuel tank has a large leakage. The ECM illuminates the MIL and sets the DTC (2 trip detection logic).