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Engine Control System [2GR-FE] [Diagnostic Codes] [P0010-P0351]: Diagnosis Toyota Sienna III

Testing & Diagnostics 29 illustrations ~16601 words

INSPECTION PROCEDURE

HINT

  1. If DTC P0010 is output, check the VVT system (for intake camshaft of bank 1) circuit.
  2. If DTC P0020 is output, check the VVT system (for intake camshaft of bank 2) circuit.
  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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  5. 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

Abnormal BankTiming Over Advanced (Valve timing is out of specified range)Timing Over Retarded (Valve timing is out of specified range)
Bank 1P0011P0012
Bank 2P0021P0022
  1. If DTC P0011 or P0012 is output, check the VVT system (for intake camshaft of bank 1) circuit.
  2. If DTC P0021 or P0022 is output, check the VVT system (for intake camshaft of bank 2) circuit.
  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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  5. DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
  6. 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 635

Scheme 635: PROCEDURE
Scheme 635: PROCEDURE

Scheme 636

Scheme 636
Scheme 636
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P0011, P0012, P0021 or P0022 is output A DTC P0011, P0012, P0021 or P0022 and other DTCs are output B HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR (BANK 1 OR 2)) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2). Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream. OK Techstream Operation Engine Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1, VVT OCV Duty #2 and VVT Change Angle #2]. Refer to «DATA LIST / ACTIVE TEST»(ref-493954-S11583093352012081000000) . NG --> See step 5 OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. 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 / Utility / All Readiness. Input the DTC: P0011, P0012, P0021 or P0022. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0011, P0012, P0021 or P0022 is output) B B --> See step 5 A --> See step 4
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  5. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover sub-assemblies RH and LH. Turn the crankshaft to align the timing marks of the crankshaft. Align the notch of the crankshaft pulley to the "0" position. Check if the timing marks of the camshaft pulley and camshaft bearing cap align. TEXT IN ILLUSTRATION *a Timing Mark Turn the crankshaft clockwise 360° if the timing marks do not align. Check if they align once again. OK The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position. NG --> See step 10 OK: Go to next step
  6. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE SIDE) Inspect the camshaft timing oil control valve assembly (for intake side). Refer to «INSPECTION»(ref-493957-S04256368282012081000000) . NG --> See step 11 OK: Go to next step
  7. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE Remove the No. 1 oil pipe or No. 2 oil pipe. TEXT IN ILLUSTRATION *1 No. 2 oil pipe *2 No. 1 oil pipe Remove the oil control valve filter RH or oil control valve filter LH. Check that the oil control valve filter and oil pipe are not clogged. OK The oil control valve filter and oil pipe are not clogged. NG --> See step 12 OK: Go to next step
  8. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (BANK 1 OR 2) Replace the camshaft timing gear assembly (bank 1 or bank 2). Refer to «REMOVAL»(ref-494105-S24168900872012081000000) . NEXT: Go to next step
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493954-S26400840072012081000000)
  10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-494105-S37944614382012081000000)
  11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE SIDE). Refer to «REMOVAL»(ref-493957-S17304517712012081000000)
  12. REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE. Refer to «DISASSEMBLY»(ref-494105-S28256061492012081000000)
  13. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. 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 / Utility / All Readiness. Input the DTC: P0011, P0012, P0021 or P0022. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0011, P0012, P0021 or P0022 is output) B HINT: DTC P0011, P0012, P0021 or P0022 is output when foreign objects in engine oil are caught in some parts of the system. These codes will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter, thus eliminating the source of the problem. B --> See step 14 A --> END
  14. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

HINT

  1. If DTC P0013 is output, check the VVT system (for exhaust camshaft of bank 1) circuit.
  2. If DTC P0023 is output, check the VVT system (for exhaust camshaft of bank 2) circuit.
  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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  5. 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

Abnormal BankTiming Over Advanced (Valve timing is out of specified range)Timing Over Retarded (Valve timing is out of specified range)
Bank 1P0014P0015
Bank 2P0024P0025
  1. If DTC P0014 or P0015 is output, check the VVT system (for exhaust camshaft of bank 1) circuit.
  2. If DTC P0024 or P0025 is output, check the VVT system (for exhaust camshaft of bank 2) circuit.
  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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  5. DTC P0014, P0015, P0024 or P0025 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
  6. 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. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  3. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
  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.

HINT

  1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  3. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
  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.

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

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. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  3. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  4. Sensor 1 refers to the sensor closest to the engine assembly.
  5. Sensor 2 refers to the sensor farthest away from the engine assembly.
  6. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-494147-S31579319842012081000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 637

Scheme 637: PROCEDURE
Scheme 637: PROCEDURE
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-493957-S21412865022012081000000) . NG --> See step 10 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (+B OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio 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 B14-2 (+B) - Body ground Ignition switch ON 11 to 14 V B13-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) *b Bank 1 *c Bank 2 NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B14-1 (HA1A) - B1-22 (HA1A) Always Below 1 ohms B13-1 (HA2A) - B1-20 (HA2A) Always Below 1 ohms B14-1 (HA1A) or B1-22 (HA1A) - Body ground Always 10 kohms or higher B13-1 (HA2A) or B1-20 (HA2A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Start the engine. Refer to the confirmation driving pattern. Read Pending DTCs. RESULT Result Proceed to No pending DTC is output A Pending DTC P0031, P0032, P0051, P0052, P101D, P103D is output B B --> See step 9 A --> See step 8
  5. INSPECT A/F HTR RELAY Inspect the A/F HTR relay. Refer to «ON-VEHICLE INSPECTION - Step 5»(ref-493957-S22323431022012081000000) . NG --> REPLACE A/F HTR RELAY OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (A/F HTR RELAY - AIR FUEL RATIO SENSOR) Remove the A/F HTR relay. Disconnect the air fuel ratio sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Condition Condition Specified Condition 3(A/F HTR relay holder) - B14-2(+B) Always Below 1 ohms 3(A/F HTR relay holder) - B13-2(+B) Always Below 1 ohms 3(A/F HTR relay holder) or B14-2(+B) - Body ground Always 10 kohms or higher 3(A/F HTR relay holder) or B13-2(+B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
  7. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494144-S01537532962012081000000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  10. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493957-S42556714632012081000000)

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

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. Bank 1 refers to the bank that includes the No. 1 cylinder. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  3. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  4. Sensor 1 refers to the sensor closest to the engine assembly.
  5. Sensor 2 refers to the sensor farthest away from the engine assembly.
  6. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the heated oxygen sensor output voltage (See appropriate Electrical Diagnostic Information). If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 638

Scheme 638: PROCEDURE
Scheme 638: PROCEDURE
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-493957-S10982894532012081000000) . NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (+B OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen 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 D38-2 (+B) - Body ground Ignition switch ON 11 to 14 V B33-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) *1 for bank 1 *2 for bank 2 NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D38-1 (HT1B) - B1-45 (HT1B) Always Below 1 ohms B33-1 (HT2B) - B1-44 (HT2B) Always Below 1 ohms D38-1 (HT1B) or B1-45 (HT1B) - Body ground Always 10 kohms or higher B33-1 (HT2B) or B1-44 (HT2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (P0037, P0038, P0057, P0058, P0141, P0161, P102D OR P105D) 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-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0037, P0038, P0057, P0058, P0141, P0161, P102D or P105D is output B B --> See step 9 A --> See step 8
  5. INSPECT EFI MAIN RELAY Inspect the EFI MAIN relay. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-493957-S22323431022012081000000) . NG --> REPLACE EFI MAIN RELAY OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - EFI MAIN RELAY) Disconnect the heated oxygen sensor connector. Remove the EFI MAIN relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D38-2 (+B) - 3 (EFI MAIN relay holder) Always Below 1 ohms B33-2 (+B) - 3 (EFI MAIN relay holder) Always Below 1 ohms D38-2 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kohms or higher B33-2 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  7. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493957-S03684060302012081000000)
  8. CHECK INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494144-S01537532962012081000000)

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.

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 639

Scheme 639: PROCEDURE
Scheme 639: PROCEDURE
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0102 is output A DTC P0103 is output B B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE) Disconnect the mass air flow meter 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 B4-3 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter) NG --> See step 7 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B4-5 (VG) - B1-74 (VG) Always Below 1 ohms B4-4 (E2G) - B1-75 (E2G) Always Below 1 ohms B4-5 (VG) or B1-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(ref-493957-S15230417962012081000000) . Inspect the mass air flow meter, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-493957-S00464188112012081000000) . Inspect the function of the mass air flow meter. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / MAF. Start the engine. Check that the reading of the mass air flow meter changes when the engine is raced. OK The reading changes. NG --> See step 8 OK --> See step 9
  5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B4-4 (E2G) - Body ground Always Below 1 ohms NG --> See step 6 OK --> See step 8
  6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter 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 B4-4 (E2G) - B1-75 (E2G) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - EFI MAIN RELAY) Disconnect the mass air flow meter connector. Remove the EFI MAIN relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Tester Connection Condition Specified Condition B4-3 (+B) - 3 (EFI MAIN relay holder) Always Below 1 ohms B4-3 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  8. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493957-S12273208142012081000000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494144-S01537532962012081000000)

Scheme 640

Scheme 640: DESCRIPTION
Scheme 640: DESCRIPTION
  1. The intake air temperature sensor, in the mass air flow meter, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature becomes low, the resistance of the thermistor increases. When the temperature becomes high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
  2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R which is located inside the ECM.
  3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111When either of the following conditions is met (2 trip detection logic): The intake air temperature rise is small, from the previous trip warm-up to the following trip When the change in the intake air temperature after engine start is less than the threshold valueMass air flow meter

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 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 641

Scheme 641: PROCEDURE
Scheme 641: PROCEDURE

Scheme 642

Scheme 642
Scheme 642
  1. READ VALUE USING TECHSTREAM (INTAKE AIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Intake Air. Read the value displayed on the Techstream. OK Same as actual intake air temperature. RESULT Result Proceed to Displayed temperature is -40°C (-40°F) A Displayed temperature is higher than 128°C (262°F) B Same as actual intake air temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 128°C (262°F). B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Confirm good connection at the mass air flow meter. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter) - - Disconnect the mass air flow meter connector. Connect terminals THA and E2 of the mass air flow meter connector on the wire harness side. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Intake Air. Read the value displayed on the Techstream. Standard value Higher than 128°C (262°F) NG --> See step 3 OK --> See step 7
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter 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 B4-1 (THA) - B1-73 (THA) Always Below 1 ohms B4-2 (E2) - B1-98 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the mass air flow meter connector. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 5 OK --> See step 7
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B4-1 (THA) or B1-73 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  7. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493957-S12273208142012081000000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

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 DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).

Scheme 643

Scheme 643: PROCEDURE
Scheme 643: PROCEDURE

Scheme 644

Scheme 644
Scheme 644
  1. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. Read the value displayed on the Techstream. OK Same as actual engine coolant temperature. RESULT Result Proceed to Displayed temperature is -40°C (-40°F) A Displayed temperature is higher than 135°C (275°F) B Same as actual engine coolant temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 135°C (275°F). B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Confirm good connection at the engine coolant temperature sensor connector. TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector (to Engine Coolant Temperature Sensor) - - Disconnect the engine coolant temperature sensor connector. Connect terminals 2 and 1 of the engine coolant temperature sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard value Higher than 135°C (275°F) NG --> See step 3 OK --> See step 7
  3. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature 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 B5-2 - B1-76 (THW) Always Below 1 ohms B5-1 - B1-97 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 5 OK --> See step 7
  5. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B5-2 or B1-76 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493957-S36534567122012081000000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

HINT

  1. If any of DTCs P0115, P0117 and P0118 are stored simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. 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. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

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 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 645

Scheme 645: PROCEDURE
Scheme 645: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1 and Throttle Position No. 2. Read the values displayed on the Techstream. RESULT When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V E2 circuit open 0 to 0.2 V, or 4.5 to 4.98 V 2.1 V to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V VTA2 circuit open or ground short 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.6 to 4.98 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121 is stored when the voltages output from VTA1 and VTA2 are not consistent with the characteristics of the sensors. Therefore, check the freeze frame data when this DTC is output. Use the following formula to confirm relative fluctuations in voltage. Characteristic Sensor Output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle position No. 2 If DTC P0121 is output, proceed to the "Check Harness and Connector (Throttle Position Sensor - ECM)". B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle with motor body 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 B20-5 (VC) - B1-80 (VCTA) Always Below 1 ohms B20-6 (VTA) - B1-78 (VTA1) Always Below 1 ohms B20-4 (VTA2) - B1-77 (VTA2) Always Below 1 ohms B20-3 (E2) - B1-79 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B20-5 (VC) or B1-80 (VCTA) - Body ground Always 10 kohms or higher B20-6 (VTA) or B1-78 (VTA1) - Body ground Always 10 kohms or higher B20-4 (VTA2) or B1-77 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle with motor body 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 B20-5 (VC) - B20-3 (E2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Throttle with Motor Body Assembly) NG --> See step 6 OK: Go to next step
  4. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Replace the throttle with motor body assembly. Refer to «REMOVAL»(ref-493957-S09457030132012081000000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) 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-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0120, P0121, P0122, P0123, P0220, P0222, P0223, and/or P2135 are output A DTC is not output B B --> END A --> See step 6
  6. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

HINT

  1. If any of DTCs P0115, P0116, P0117 or P0118 are stored simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or a short circuit. 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.

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. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume function provided in the Active Test. The Control the Injection Volume 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 operation using the Techstream.

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages 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

  1. Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 AFS Voltage B2S1 (Air fuel ratio)+12%RichBelow 3.1 V
12%LeanHigher than 3.4 V
O2S B1S2 O2S B2S2 (Heated oxygen)+12%RichHigher than 0.55 V
12%LeanBelow 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 4 Fuel injector assembly Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 646

Scheme 646
Scheme 646

Scheme 647

Scheme 647
Scheme 647

Scheme 648

Scheme 648
Scheme 648

Scheme 649

Scheme 649
Scheme 649
  1. Following the Control the Injection Volume procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; and then press the graph button on the Data List view.

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

HINT

  1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
  2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  3. Sensor 1 refers to the sensor closest to the engine assembly.
  4. Sensor 2 refers to the sensor farthest away from the engine assembly.
  5. 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 650

Scheme 650: PROCEDURE
Scheme 650: PROCEDURE

Scheme 651

Scheme 651
Scheme 651
  1. READ OUTPUT DTC (DTC P0136, P0137, P0138, P0139, P0156, P0157, P0158 OR P0159) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0138 or P0158 is output A DTC P0137 or P0157 is output B DTC P0136 or P0156 is output C DTC P0139 or P0159 is output D DTC P0136, P0137, P0138, P0156, P0157 or P0158 and other DTCs are output E HINT: If any DTCs other than P0136, P0137, P0138, P0139, P0156, P0157, P0158 and P0159 are output, troubleshoot those DTCs first. B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 26 A: Go to next step
  2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Components without harness connected (Heated Oxygen Sensor) *b (for Bank 1) *c (for Bank 2) NG --> See step 23 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B1-45 (HT1B) - B1-114 (OX1B) Always 10 kohms or higher B1-44 (HT2B) - B1-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 25
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / O2S B1S2 or O2S B2S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of the heated oxygen sensor displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The heated oxygen sensor has a maximum output delay of approximately 20 seconds. Standard voltage Fluctuates between 0.4 V or less, and 0.55 V or higher. NG --> See step 6 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1 or AFS Voltage B2S1, and the heated oxygen sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream. 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. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 AFS Voltage B2S1 (Air fuel ratio) Alternates between higher and less than 3.3 V OK Remains at higher than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2 or O2S B2S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage (AFS Voltage B1S1 or AFS Voltage B2S1) remains at either less or higher than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 12 OK --> See step 24
  6. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 21 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D38-1 (HT1B) - B1-45 (HT1B) Always Below 1 ohms D38-3 (OX1B) - B1-114 (OX1B) Always Below 1 ohms D38-4 (E2) - B1-115 (EX1B) Always Below 1 ohms B33-1 (HT2B) - B1-44 (HT2B) Always Below 1 ohms B33-3 (OX2B) - B1-112 (OX2B) Always Below 1 ohms B33-4 (E2) - B1-113 (EX2B) Always Below 1 ohms D38-1 (HT1B) or B1-45 (HT1B) - Body ground Always 10 kohms or higher D38-3 (OX1B) or B1-114 (OX1B) - Body ground Always 10 kohms or higher B33-1 (HT2B) or B1-44 (HT2B) - Body ground Always 10 kohms or higher B33-3 (OX2B) or B1-112 (OX2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-493957-S03684060302012081000000) . NEXT: Go to next step
  10. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0156 OR P0157) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0136, P0137, P0156 or P0157. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0136, P0137, P0156 or P0157 is output) A NORMAL (DTC is not output) B B --> END A --> See step 22
  12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-493957-S42556714632012081000000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0156) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0136 or P0156. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0136 or P0156 is output) B B --> See step 19 A --> END
  15. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  16. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B1-45 (HT1B) - B1-114 (OX1B) Always 10 kohms or higher B1-44 (HT2B) - B1-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  17. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0139 and P0159). NEXT: Go to next step
  18. READ OUTPUT DTC (DTC P0139 OR P0159 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0139 or P0159. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0139 or P0159 is output) A NORMAL (DTC is not output) B B --> See step 20 A --> See step 19
  19. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493957-S03684060302012081000000)
  20. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  21. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493957-S03684060302012081000000)
  22. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493957-S42556714632012081000000)
  23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493957-S03684060302012081000000)
  24. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (FUEL INJECTOR ASSEMBLY, FUEL SYSTEM, INTAKE SYSTEM, ETC.). Refer to «INSPECTION PROCEDURE»(ref-494147-S10970187422012081000000)
  25. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  26. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493954-S26400840072012081000000)

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

HINT

  1. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  2. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  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 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.
  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 transaxle.
  5. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  6. Sensor 1 refers to the sensor closest to the engine assembly.
  7. Sensor 2 refers to the sensor farthest away from the engine assembly.

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

HINT

  1. Sensor 1 refers to the sensor closest to the engine assembly.
  2. Sensor 2 refers to the sensor farthest away from the engine assembly.
  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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
  5. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  6. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  7. 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 652

Scheme 652: PROCEDURE
Scheme 652: PROCEDURE

Scheme 653

Scheme 653
Scheme 653
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172, P0174 OR P0175) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P0171, P0172, P0174 or P0175 is output A DTC P0171, P0172, P0174 or P0175 and other DTCs are output B HINT: If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first. B --> See step 23 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-494115-S38183353702012081000000) . OK PCV valve and hose are connected correctly and are not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
  3. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. OK No leaks from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume. Perform the Control the Injection Volume operation with the engine in an idling condition (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: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. Each sensor reacts in accordance with increases and decreases in the fuel injection volume. 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. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Standard Voltage Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) +12% Rich Less than 3.1 -12% Lean More than 3.4 O2S B1S2 or O2S B2S2 (Heated oxygen) +12% Rich More than 0.55 -12% Lean Less than 0.4 RESULT Status AFS Voltage B1S1 or AFS Voltage B2S1 Status O2S B1S2 or O2S B2S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Suspected Trouble Area Proceed to Lean/Rich Lean/Rich Normal - A Lean Lean Actual air fuel ratio lean PCV valve and hose PCV hose connections Fuel injector assembly blockage Gas leak from exhaust system Intake system Fuel pressure Mass air flow meter Engine coolant temperature sensor A Rich Rich Actual air fuel ratio rich Fuel injector assembly leak or blockage Gas leak from exhaust system Ignition system Fuel pressure Mass air flow meter Engine coolant temperature sensor A Lean Lean/Rich Air fuel ratio sensor malfunction Air fuel ratio sensor B Rich Lean/Rich Air fuel ratio sensor malfunction Air fuel ratio sensor B Lean: During Control the Injection Volume, the air fuel ratio sensor output voltage (AFS Voltage B1S1 or AFS Voltage B2S1) is consistently more than 3.4 V, and the heated oxygen sensor output voltage (O2S B1S2 or O2S B2S2) is consistently less than 0.4 V. Rich: During Control the Injection Volume, the AFS Voltage B1S1 or AFS Voltage B2S1 is consistently less than 3.1 V, and the O2S B1S2 or O2S B2S2 is consistently more than 0.55 V. Lean/Rich: During Control the Injection Volume of the Active Test, the output voltage of the air fuel ratio sensor and heated oxygen sensor alternates correctly. HINT: Refer to "Data List / Active Test" [AFS Voltage B1S1, AFS Voltage B2S1, O2S B1S2 and O2S B2S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-493954-S11583093352012081000000) B --> See step 11 A: Go to next step
  5. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. Read the Coolant Temp twice, when the engine is both cold and warmed up. Standard Techstream Display Condition Specified Condition Coolant Temp Cold engine Same as ambient air temperature Warm engine Between 75 and 100°C (167 and 212°F) NG --> See step 24 OK: Go to next step
  6. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / MAF, Coolant Temp and Engine Speed. Read MAF with the engine speed at 2000 RPM. Standard Techstream Display Condition Specified Condition MAF Shift lever position: N (Neutral) A/C: Off Engine Speed: 3000 RPM Between 11 gm/sec. and 16 gm/sec NG --> See step 16 OK: Go to next step
  7. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-494145-S27121823292012081000000) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
  8. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No exhaust gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  9. CHECK FOR SPARKS AND IGNITION Perform a spark test. HINT: Refer to the ignition system inspection procedure. Refer to «ON-VEHICLE INSPECTION»(ref-494111-S17146005232012081000000) . If the spark plugs or ignition system malfunctions, engine misfire may occur. The misfire count can be read using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Cylinder #1 Misfire Count (to Cylinder #6 Misfire Count). NG --> REPAIR OR REPLACE IGNITION SYSTEM OK: Go to next step
  10. INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME) Check the injection and volume. HINT: Refer to the fuel injector assembly inspection procedure. Refer to «INSPECTION - Step 1»(ref-494150-S38905854532012081000000) . If the injectors malfunction, engine misfire may occur. The misfire count can be read using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Cylinder #1 Misfire Count (to Cylinder #6 Misfire Count). OK --> See step 15 NG --> See step 25
  11. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION - Step 1»(ref-493957-S06289314232012081000000) . NG --> See step 26 OK: Go to next step
  12. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio 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 B14-2 (+B) - Body ground Ignition switch ON 11 to 14 V B13-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) *b for Bank 1 *c for Bank 2 NG --> See step 21 OK: Go to next step
  13. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B14-1 (HA1A) - B1-22 (HA1A) Always Below 1 ohms B14-3 (A1A+) - B1-126 (A1A+) Always Below 1 ohms B14-4 (A1A-) - B1-125 (A1A-) Always Below 1 ohms B13-1 (HA2A) - B1-20 (HA2A) Always Below 1 ohms B13-3 (A2A+) - B1-103 (A2A+) Always Below 1 ohms B13-4 (A2A-) - B1-102 (A2A-) Always Below 1 ohms B14-1 (HA1A) or B1-22 (HA1A) - Body ground Always 10 kohms or higher B14-3 (A1A+) or B1-126 (A1A+) - Body ground Always 10 kohms or higher B14-4 (A1A-) or B1-125 (A1A-) - Body ground Always 10 kohms or higher B13-1 (HA2A) or B1-20 (HA2A) - Body ground Always 10 kohms or higher B13-3 (A2A+) or B1-103 (A2A+) - Body ground Always 10 kohms or higher B13-4 (A2A-) or B1-102 (A2A-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-493957-S42556714632012081000000) . NEXT: Go to next step
  15. CHECK WHETHER DTC OUTPUT RECURS (DTC P0171, P0172, P0174 OR P0175) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. 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 / Trouble Codes. Read the pending DTCs. RESULT Result Proceed to DTC P0171, P0172, P0174 or P0175 is output A DTC is not output B B --> END A: Go to next step
  16. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR CONNECTION) 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-493943-S23045644322012081000000) . HINT: Repair any problems. NEXT: Go to next step
  17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0171, P0172, P0174 OR P0175) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. 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 / Trouble Codes. Read the pending DTCs. RESULT Result Proceed to DTC P0171, P0172, P0174 or P0175 is output A DTC is not output B B --> END A: Go to next step
  18. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  19. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-493957-S12273208142012081000000) . HINT: If the result of the inspection performed in step 6 indicated no problem, proceed to the next step without replacing the mass air flow meter. NEXT: Go to next step
  20. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. 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 / Trouble Codes. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0171, P0172, P0174 or P0175 is output B B --> See step 27 A --> END
  21. CHECK HARNESS AND CONNECTOR (A/F HTR RELAY - AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Remove the A/F HTR relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B14-2 (+B) - 3 (A/F HEATER relay holder) Always Below 1 ohms B13-2 (+B) - 3 (A/F HEATER relay holder) Always Below 1 ohms B14-2 (+B) or 3 (A/F HEATER relay holder) - Body ground Always 10 kohms or higher B13-2 (+B) or 3 (A/F HEATER relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  22. INSPECT A/F HTR RELAY Remove the A/F HTR relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE A/F HTR RELAY OK --> See step 28
  23. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493954-S26400840072012081000000)
  24. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493957-S36534567122012081000000)
  25. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-494150-S18741957392012081000000)
  26. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493957-S42556714632012081000000)
  27. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  28. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494144-S01537532962012081000000)

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

HINT

This troubleshooting procedure is based on the premise that the engine can start. If the engine cannot start, proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

Scheme 654

Scheme 654: PROCEDURE
Scheme 654: PROCEDURE
  1. INSPECT FUEL PMP RELAY Inspect the FUEL PMP relay. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-493957-S22323431022012081000000) . NG --> REPLACE F/PMP RELAY OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (FUEL PMP RELAY) Remove the FUEL PMP relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2(FUEL PMP relay holder) - Body ground Cranking 11 to 14 V 2(FUEL PMP relay holder) - Body ground Ignition switch ON 0 to 3 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 FUEL PMP Relay Holder NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FUEL PMP RELAY - ECM) Remove the FUEL PMP relay from the engine room relay block. 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 1(F/PMP relay holder) - A39-48 (FPR) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 1(F/PMP relay holder) or A39-48 (FPR) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  4. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  5. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-494144-S04379509852012081000000)

Scheme 655

Scheme 655: DESCRIPTION
Scheme 655: DESCRIPTION

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high hydrocarbon concentration levels can cause an increase in exhaust emission levels. Extremely high concentrations of hydrocarbons can also cause increases in the three-way catalytic converter temperature, which may cause damage to the three-way catalytic converter. To prevent this increase in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire count. When the temperature of the three-way catalytic converter reaches the point of thermal degradation, the ECM blinks the MIL. To monitor misfires, the ECM uses both the camshaft position sensor and the crankshaft position sensor. The camshaft position sensor is used to identify any misfiring cylinders and the crankshaft position sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted when the crankshaft rotation speed variations exceed predetermined thresholds. If the misfire count exceeds the threshold levels, and could cause emission control system performance deterioration, the ECM illuminates the MIL and stores a DTC.

DTC No.DTC Detection ConditionTrouble Area
P0300Simultaneous misfiring of several cylinders occurs and one of the following conditions is met (2 trip detection logic): A misfire occurs that may damage the three-way catalytic converter (MIL blinks). An emission deterioration misfire occurs (MIL illuminates).Open or short in engine wire harness Connector connection Vacuum hose connections Ignition system Fuel injector assembly Fuel pressure Mass air flow meter Engine coolant temperature sensor Compression pressure Valve timing PCV valve and hose PCV hose connections Intake system ECM
P0301 P0302 P0303 P0304 P0305 P0306Misfiring of a specific cylinder occurs and one of the following conditions is met (2 trip detection logic): A misfire occurs that may damage the three-way catalytic converter (MIL blinks). An emission deterioration misfire occurs (MIL illuminates).

When DTCs for misfiring cylinders are stored, but DTC P0300 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P0300 is only stored when several misfiring cylinders are detected at the same time.

Note. Inspect the fuses for circuits related to this system before performing the following 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 stored again by conducting the confirmation driving pattern after finishing repairs.
  7. For 6 and 8 cylinder engines, the ECM intentionally does not stored the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P0300 is stored In the event of DTC P0300 being present, perform the following operations: Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . 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 stored.
  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 +/-15%, the air fuel ratio may be Rich (-15% or less) or Lean (+15% or more).
  9. When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfire has occurred only while warming up the engine.
  10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be stored

Scheme 656

Scheme 656: PROCEDURE
Scheme 656: PROCEDURE

Scheme 657

Scheme 657
Scheme 657
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read 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 P0306 are output, troubleshoot those DTCs first. B --> See step 35 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-494115-S38183353702012081000000) . OK PCV valve and hose are connected correctly and are 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 to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 (PROHIBIT CAT OT F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and either idling or being revved within 3000 RPM. NEXT: Go to next step
  6. READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) Enter the following menus: Powertrain / Engine / Data List / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count, #4 Misfire Count, #5 Misfire Count and Cylinder #6 Misfire Count. Start the engine and allow the engine to idle. Read each value for Cylinder #1 Misfire Count to Cylinder #6 Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform steps (d) and (e) and then check the misfire counts again. Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above. Read the Cylinder #1 Misfire Count to Cylinder #6 Misfire Count or DTCs displayed on the Techstream. RESULT Result Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data's record of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data's record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 17 A: Go to next step
  7. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-494111-S41815547552012081000000) . NG --> See step 36 OK: Go to next step
  8. CHECK FOR SPARKS AND IGNITION (SPARK TEST) Disconnect the fuel injector assembly connector to prevent the engine from starting. WARNING: Always disconnect all the fuel injector assembly connectors. Remove the ignition coil assembly from the cylinder head. Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-494111-S41815547552012081000000) . NG --> See step 32 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 11»(ref-494105-S24148061602012081000000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  10. CHECK ECM TERMINAL VOLTAGE (#10, #20, #30, #40, #50 AND /OR #60) Disconnect the ECM 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 B1-86 (#10) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-109 (#20) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-85 (#30) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-108 (#40) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-84 (#50) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-107 (#60) - B1-43 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 37 OK: Go to next step
  11. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-494150-S37087392142012081000000) . NG --> See step 38 OK: Go to next step
  12. CHECK INTAKE SYSTEM Check the intake system for vacuum leak. OK No leaks from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  13. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-494145-S27121823292012081000000) . NG --> See step 34 OK: Go to next step
  14. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 39 OK: Go to next step
  15. READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 27 OK: Go to next step
  16. CHECK VALVE TIMING See step 5 OK --> See step 27 NG --> See step 40
  17. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks OK No leaks from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  18. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-494145-S27121823292012081000000) . NG --> See step 34 OK: Go to next step
  19. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 41 OK: Go to next step
  20. READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 27 OK: Go to next step
  21. CHECK VALVE TIMING See step 5 NG --> See step 42 OK: Go to next step
  22. INSPECT SPARK PLUG Remove the ignition coil assembly and the spark plug from the misfiring cylinder. Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-494111-S41815547552012081000000) . NG --> See step 43 OK: Go to next step
  23. CHECK FOR SPARKS AND IGNITION (SPARK TEST) Disconnect the fuel injector assembly connector to prevent the engine from starting. WARNING: Always disconnect all the fuel injector assembly connectors. Remove the ignition coil assembly from the cylinder head. Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-494111-S41815547552012081000000) . NG --> See step 32 OK: Go to next step
  24. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 11»(ref-494105-S24148061602012081000000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  25. INSPECT ECM TERMINAL VOLTAGE (#10, #20, #30, #40, #50 AND /OR #60) Disconnect the ECM 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 B1-86 (#10) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-109 (#20) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-85 (#30) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-108 (#40) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-84 (#50) - B1-43 (E01) Ignition switch ON 11 to 14 V B1-107 (#60) - B1-43 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 44 OK: Go to next step
  26. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-494150-S37087392142012081000000) . NG --> See step 45 OK: Go to next step
  27. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR CONNECTION) 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-493943-S23045644322012081000000) . HINT: Repair any problems. NEXT: Go to next step
  28. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Warm up the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, 0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  29. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) See step 6 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  30. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-493957-S12273208142012081000000) . HINT: If the results of the inspections performed in steps 15 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter. NEXT: Go to next step
  31. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Warm up the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, 0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) B B --> See step 46 A --> END
  32. CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER Change the installed spark plug to a spark plug that functions normally. Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-494111-S41815547552012081000000) . WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug to the ignition coil assembly and connect the ignition coil assembly connector. Disconnect the fuel injector assembly connector. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 33 OK --> See step 47
  33. CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER Change the ignition coil assembly to an ignition coil assembly that functions normally. Perform a spark test. WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug to the ignition coil assembly and connect the ignition coil assembly connector. Disconnect the fuel injector assembly connector. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 48 OK --> See step 49
  34. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 50
  35. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493954-S26400840072012081000000)
  36. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-493957-S35214455032012081000000)
  37. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-494144-S38345804582012081000000)
  38. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-494150-S18741957392012081000000)
  39. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493957-S36534567122012081000000)
  40. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-494105-S37944614382012081000000)
  41. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493957-S36534567122012081000000)
  42. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-494105-S37944614382012081000000)
  43. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-493957-S35214455032012081000000)
  44. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-494144-S38345804582012081000000)
  45. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-494150-S18741957392012081000000)
  46. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  47. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-493957-S35214455032012081000000)
  48. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  49. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-493957-S35214455032012081000000)
  50. REPLACE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY. Refer to «REMOVAL»(ref-494150-S36058867092012081000000)

HINT

  1. DTCs P0327 and P0328 are for the bank 1 knock sensor circuit.
  2. DTCs P0332 and P0333 are for the bank 2 knock 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 transaxle.
  5. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 658

Scheme 658: PROCEDURE
Scheme 658: PROCEDURE
  1. INSPECT ECM (KNK1, KNK2 VOLTAGE) Disconnect the knock 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 f2-1 - f2-2 Ignition switch ON 4.5 to 5.5 V f1-1 - f1-2 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to knock sensor) *b for Bank 1 *c for Bank 2 NG --> See step 3 OK: Go to next step
  2. INSPECT KNOCK SENSOR Inspect the knock sensor. Refer to «INSPECTION»(ref-493957-S20677442892012081000000) . NG --> See step 4 OK --> See step 5
  3. CHECK HARNESS AND CONNECTOR (KNOCK SENSOR - ECM) Disconnect the knock 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 f2-2 - B1-94 (KNK1) Always Below 1 ohms f2-1 - B1-93 (EKNK) Always Below 1 ohms f1-2 - B1-117 (KNK2) Always Below 1 ohms f1-1 - B1-116 (EKN2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition f2-2 or B1-94 (KNK1) - Body ground Always 10 kohms or higher f2-1 or B1-93 (EKNK) - Body ground Always 10 kohms or higher f1-2 or B1-117 (KNK2) - Body ground Always 10 kohms or higher f1-1 or B1-116 (EKN2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-493957-S08696787792012081000000)
  5. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

HINT

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.

  1. Installation condition of the VVT sensor
  2. Installation condition of the camshaft
  3. Connection of the VVT sensor connector

HINT

  1. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
  2. Check the engine speed. The engine speed can be checked using the Techstream. Follow the procedure below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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.
  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 659

Scheme 659: PROCEDURE
Scheme 659: PROCEDURE
  1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. OK 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 Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-493957-S06172773062012081000000) . 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 B15-1 - B1-110 (NE+) Always Below 1 ohms B15-2 - B1-111 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B15-1 or B1-110 (NE+) - Body ground Always 10 kohms or higher B15-2 or B1-111 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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: Go to next step
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493954-S36145137532012081000000)
  7. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-493957-S11232225412012081000000)
  8. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-493957-S23285246242012081000000)
  9. REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-494105-S25188007742012081000000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)
  11. REPLACE CRANK POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-493957-S11232225412012081000000) . NEXT: Go to next step
  12. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 OR P0339) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to No output A DTC P0335 or P0339 is output B B --> See step 10 A --> END

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 transaxle.
  4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 660

Scheme 660: PROCEDURE
Scheme 660: PROCEDURE

Scheme 661

Scheme 661
Scheme 661
  1. CHECK VVT SENSOR (FOR INTAKE SIDE) (SENSOR POWER SOURCE) Disconnect the VVT sensor (for intake side) 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 B16-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V B17-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to VVT Sensor (for Intake Side)) *b for Bank 1 *c for Bank 2 NG --> See step 8 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE SIDE) - ECM) Disconnect the VVT sensor (for intake side) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B16-1 (VVR+) - B1-90 (VV1+) Always Below 1 ohms B16-2 (VVR-) - B1-89 (VV1-) Always Below 1 ohms B17-1 (VVL+) - B1-87 (VV2+) Always Below 1 ohms B17-2 (VVL-) - B1-88 (VV2-) Always Below 1 ohms B16-1 (VVR+) or B1-90 (VV1+) - Body ground Always 10 kohms or higher B16-2 (VVR-) or B1-89 (VV1-) - Body ground Always 10 kohms or higher B17-1 (VVL+) or B1-87 (VV2+) - Body ground Always 10 kohms or higher B17-2 (VVL-) or B1-88 (VV2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK SENSOR INSTALLATION (VVT SENSOR (FOR INTAKE SIDE)) Check the VVT sensor (for intake side) installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
  4. CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF PLATE) Check the teeth of the sensor plate. OK Sensor plate teeth do not have any cracks or deformation. NG --> See step 10 OK: Go to next step
  5. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN) See step 5 NG --> See step 11 OK: Go to next step
  6. REPLACE VVT SENSOR (FOR INTAKE SIDE) Replace the VVT sensor (for intake side). Refer to «REMOVAL»(ref-493957-S09204104542012081000000) . NEXT: Go to next step
  7. 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-493954-S40015553512012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. 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 / Utility / All Readiness. Input the P0340, P0342, P0343, P0345, P0347, or P0348. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0340, P0342, P0343, P0345, P0347, or P0348 is output) B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
  8. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE SIDE) - ECM) Disconnect the VVT sensor (for intake side) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B16-3 (VC) - B1-67 (VCV1) Always Below 1 ohms B17-3 (VC) - B1-66 (VCV2) Always Below 1 ohms B16-3 (VC) or B1-67 (VCV1) - Body ground Always 10 kohms or higher B17-3 (VC) or B1-66 (VCV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
  9. SECURELY REINSTALL VVT SENSOR (FOR INTAKE SIDE). Refer to «INSTALLATION»(ref-493957-S28072647462012081000000)
  10. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to «REMOVAL»(ref-494105-S24168900872012081000000)
  11. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-494105-S37944614382012081000000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

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 662

Scheme 662: PROCEDURE
Scheme 662: PROCEDURE

Scheme 663

Scheme 663
Scheme 663
  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 / 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 Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493954-S40015553512012081000000) . 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 B23-1 (+B) - B23-4 (GND) Ignition switch ON 11 to 14 V B24-1 (+B) - B24-4 (GND) Ignition switch ON 11 to 14 V B25-1 (+B) - B25-4 (GND) Ignition switch ON 11 to 14 V B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) 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 B23-3 (IGT1) - B1-40 (IGT1) Always Below 1 ohms B24-3 (IGT2) - B1-39 (IGT2) Always Below 1 ohms B25-3 (IGT3) - B1-38 (IGT3) Always Below 1 ohms B26-3 (IGT4) - B1-37 (IGT4) Always Below 1 ohms B27-3 (IGT5) - B1-36 (IGT5) Always Below 1 ohms B28-3 (IGT6) - B1-35 (IGT6) Always Below 1 ohms B23-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms B24-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms B25-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms B26-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms B27-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms B28-2 (IGF) - B1-104 (IGF1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B23-3 (IGT1) or B1-40 (IGT1) - Body ground Always 10 kohms or higher B24-3 (IGT2) or B1-39 (IGT2) - Body ground Always 10 kohms or higher B25-3 (IGT3) or B1-38 (IGT3) - Body ground Always 10 kohms or higher B26-3 (IGT4) or B1-37 (IGT4) - Body ground Always 10 kohms or higher B27-3 (IGT5) or B1-36 (IGT5) - Body ground Always 10 kohms or higher B28-3 (IGT6) or B1-35 (IGT6) - Body ground Always 10 kohms or higher B23-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher B24-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher B25-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher B26-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher B27-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher B28-2 (IGF) or B1-104 (IGF1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 B23-4 (GND) - Body ground Always Below 1 ohms B24-4 (GND) - Body ground Always Below 1 ohms B25-4 (GND) - Body ground Always Below 1 ohms B26-4 (GND) - Body ground Always Below 1 ohms B27-4 (GND) - Body ground Always Below 1 ohms B28-4 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) 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-493957-S35214455032012081000000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-493957-S32385345752012081000000)

More articles — Engine Control System [2GR-FE] [Diagnostic Codes] [P0010-P0351]