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Engine Control System (Diagnostic Codes (P0010-P0348) (2GR-FE): Diagnosis Toyota Camry XV50

Testing & Diagnostics 23 illustrations ~13578 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 467

Scheme 467: PROCEDURE
Scheme 467: PROCEDURE

Scheme 468

Scheme 468
Scheme 468
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the 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) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch 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-507773-S27336102882012100900000) . 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 engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). 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 / Pending. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0011, P0012, P0021 or P0022 is output B HINT: 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. B --> See step 5 A --> See step 4
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)
  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Remove the cylinder head cover sub-assemblies RH and LH. Refer to «REMOVAL»(ref-507911-S10540357362012100900000) . Turn the crankshaft pulley, and align its groove with the "0" timing mark of the timing chain cover. Check that the timing marks of the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned with the timing marks of the bearing cap as shown in the illustration. HINT: If the timing marks are not as shown, turn the crankshaft one revolution clockwise. OK The timing marks on the camshaft timing gear assemblies and camshaft timing exhaust gear assemblies are aligned as shown in the illustration. TEXT IN ILLUSTRATION *1 Timing Mark NG --> See step 10 OK: Go to next step
  6. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Inspect the camshaft timing oil control valve assembly (for intake camshaft). Refer to «INSPECTION»(ref-507946-S27694232122012100900000) . NG --> See step 11 OK: Go to next step
  7. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE Remove the oil pipe or No. 1 oil pipe. Refer to «DISASSEMBLY»(ref-507911-S36702510612012100900000) . 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 or oil pipe is not clogged. TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Oil Pipe *b No. 1 Oil Pipe NG --> See step 12 OK: Go to next step
  8. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly (bank 1 or bank 2). Refer to «REMOVAL»(ref-507911-S10540357362012100900000) . HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NEXT: Go to next step
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000)
  10. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-507911-S28897782242012100900000)
  11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT). Refer to «REMOVAL»(ref-507946-S01666725132012100900000)
  12. REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE. Refer to «DISASSEMBLY»(ref-507911-S36702510612012100900000)
  13. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). 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 / Pending. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0011, P0012, P0021 or P0022 is output B B --> See step 14 A --> END
  14. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)

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. Refer to "Data List / Active Test" [A/F Heater Duty #1 and A/F Heater Duty #2]. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  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. 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
  7. 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-507943-S04273784512012100900000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 469

Scheme 469: PROCEDURE
Scheme 469: PROCEDURE

Scheme 470

Scheme 470
Scheme 470
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-507946-S19991345432012100900000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E19-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V E48-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to Air Fuel Ratio Sensor) 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 E19-1 (HA1A) - E26-26 (HA1A) Always Below 1 ohms E48-1 (HA2A) - E26-20 (HA2A) Always Below 1 ohms E19-1 (HA1A) or E26-26 (HA1A) - Body ground Always 10 kohms or higher E48-1 (HA2A) or E26-20 (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 (DTC P0031, P0032, P0051, P0052, P101D OR P103D) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). 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 is not output A DTC P0031, P0032, P0051, P0052, P101D or P103D is output B B --> See step 8 A --> See step 9
  5. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - NO. 1 INTEGRATION RELAY) Disconnect the air fuel ratio sensor connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E19-2 (+B) - 1A-7 Always Below 1 ohms E48-2 (+B) - 1A-6 Always Below 1 ohms E19-2 (+B) or 1A-7 - Body ground Always 10 kohms or higher E48-2 (+B) or 1A-6 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 INTEGRATION RELAY) Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 1D-1 - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Integration Relay) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - NO. 1 INTEGRATION RELAY) OK --> See step 10
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-507946-S02645242072012100900000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)
  10. REPLACE NO. 1 INTEGRATION RELAY. Refer to «REMOVAL»(ref-507946-S19996491392012100900000)

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. Refer to "Data List / Active Test" [O2 Heater B1S2, O2 Heater B2S2, O2 Heater Curr Val B1S2 and O2 Heater Curr Val B2S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-507773-S27336102882012100900000) .
  6. When the values for the Data List items O2 Heater Curr Val B1S2 and O2 Heater Curr Val B2S2 are not 0 A, the heaters are on.
  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.
  8. 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. Refer to «INSPECTION PROCEDURE»(ref-507943-S04273784512012100900000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 471

Scheme 471: PROCEDURE
Scheme 471: PROCEDURE
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-507946-S21251162872012100900000) . NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E22-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V E20-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to Heated Oxygen Sensor) - - 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 E22-1 (HT1B) - E26-28 (HT1B) Always Below 1 ohms E20-1 (HT2B) - E26-22 (HT2B) Always Below 1 ohms E22-1 (HT1B) or E26-28 (HT1B) - Body ground Always 10 kohms or higher E20-1 (HT2B) or E26-22 (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 (DTC P0037, P0038, P0057, P0058, P0141, P0161, P102D OR P105D) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). 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 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 7 A --> See step 8
  5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - NO. 1 INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E22-2 (+B) - 1A-8 Always Below 1 ohms E20-2 (+B) - 1A-8 Always Below 1 ohms E22-2 (+B) or 1A-8 - Body ground Always 10 kohms or higher E20-2 (+B) or 1A-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-507946-S18879423342012100900000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)
  9. REPLACE NO. 1 INTEGRATION RELAY. Refer to «REMOVAL»(ref-507946-S19996491392012100900000)

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 472

Scheme 472: PROCEDURE
Scheme 472: PROCEDURE
  1. READ OUTPUT DTC (DTC P0102 OR P0103) Connect the Techstream to the DLC3. Turn the engine switch on (IG). 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 TERMINAL VOLTAGE (POWER SOURCE OF MASS AIR FLOW METER SUB-ASSEMBLY) Disconnect the mass air flow meter sub-assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E14-3 (+B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) NG --> See step 7 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-5 (VG) - E26-98 (VG) Always Below 1 ohms E14-4 (E2G) - E26-130 (E2G) Always Below 1 ohms E14-5 (VG) or E26-98 (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 SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(ref-507946-S33844983952012100900000) . Inspect the mass air flow meter sub-assembly, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-507946-S00800964772012100900000) . Inspect the function of the mass air flow meter sub-assembly. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / MAF. Start the engine. Check that the MAF value changes when the engine is raced. OK The reading changes. HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 8 OK --> See step 9
  5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter sub-assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-4 (E2G) - Body ground Always Below 1 ohms HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 6 OK --> See step 8
  6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-4 (E2G) - E26-130 (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 SUB-ASSEMBLY - NO. 1 INTEGRATION RELAY) Disconnect the mass air flow meter sub-assembly connector. Remove the No. 1 integration relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-3 (+B) - 1A-8 Always Below 1 ohms E14-3 (+B) or 1A-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  8. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-507946-S33841400752012100900000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  10. REPLACE NO. 1 INTEGRATION RELAY. Refer to «REMOVAL»(ref-507946-S19996491392012100900000)

Scheme 473

Scheme 473: DESCRIPTION
Scheme 473: DESCRIPTION
  1. The intake air temperature sensor, mounted on the mass air flow meter sub-assembly, 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 is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes (Scheme 473)
  2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  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
P0111Either of the following conditions is met (2 trip detection logic): The intake air temperature change from the previous warm-up to the following trip is small The change in the intake air temperature after engine start is less than the threshold valueMass air flow meter sub-assembly

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 474

Scheme 474: PROCEDURE
Scheme 474: PROCEDURE

Scheme 475

Scheme 475
Scheme 475
  1. READ VALUE USING TECHSTREAM (INTAKE AIR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Intake Air. Read the value displayed on the Techstream. OK Same as actual intake air temperature. RESULT Result Proceed to -40°C (-40°F) A 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) Disconnect the mass air flow meter sub-assembly connector. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) - - Connect terminals 1 (THA) and 2 (E2) of the mass air flow meter sub-assembly connector on the wire harness side. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Intake Air. Read the value displayed on the Techstream. Standard value Higher than 128°C (262°F) HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 3 OK --> See step 7
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-1 (THA) - E26-96 (THA) Always Below 1 ohms E14-2 (E2) - E26-118 (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 sub-assembly connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM HINT: Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 5 OK --> See step 7
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E14-1 (THA) or E26-96 (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-507773-S29925410012012100900000)
  7. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-507946-S33841400752012100900000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)

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 476

Scheme 476: PROCEDURE
Scheme 476: PROCEDURE

Scheme 477

Scheme 477
Scheme 477
  1. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 75 and 100°C (167 and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A Higher than 135°C (275°F) B Between 75 and 100°C (167 and 212°F) 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) Disconnect 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) - - Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value Higher than 135°C (275°F) HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 Tester Connection Condition Specified Condition E47-2 - E26-114 (THW) Always Below 1 ohms E47-1 - E26-117 (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. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 Tester Connection Condition Specified Condition E47-2 or E26-114 (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-507773-S29925410012012100900000)
  7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-507946-S29068191982012100900000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)

HINT

  1. If any of DTCs P0115, P0117 or P0118 are output 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 / Primary / 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 478

Scheme 478: PROCEDURE
Scheme 478: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas Throttle / Throttle Position No. 1 and Throttle Position No. 2. Read the values displayed on the Techstream. RESULT When Accelerator Pedal Fully Released When Accelerator Pedal Fully Depressed Trouble Area Proceed to Throttle Position No. 1 (VTA1) Throttle Position No. 2 (VTA2) Throttle Position No. 1 (VTA1) Throttle Position No. 2 (VTA2) 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VCTA 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 ETA circuit open 0 to 0.2 V, or 4.5 to 4.98 V 2.1 to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 2.1 to 3.1 V (Fail-safe) VTA1 circuit open or shorted to ground 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V VTA2 circuit open or shorted to ground 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 VTA1 and VTA2 output voltages are not consistent with the sensor characteristics. Therefore, check the freeze frame data when this DTC is stored. Use the following formula to confirm the relative differences 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 "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 Tester Connection Condition Specified Condition E16-5 (VC) - E26-126 (VCTA) Always Below 1 ohms E16-6 (VTA) - E26-128 (VTA1) Always Below 1 ohms E16-4 (VTA2) - E26-127 (VTA2) Always Below 1 ohms E16-3 (E2) - E26-125 (ETA) Always Below 1 ohms E16-5 (VC) or E26-126 (VCTA) - Body ground Always 10 kohms or higher E16-6 (VTA) or E26-128 (VTA1) - Body ground Always 10 kohms or higher E16-4 (VTA2) or E26-127 (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 engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E16-5 (VC) - E16-3 (E2) Engine switch on (IG) 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-507946-S23353884042012100900000) . HINT: Perform "Inspection After Repair" after replacing the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Turn the engine switch on (IG). 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-507946-S38180476022012100900000)

HINT

  1. If any of DTCs P0115, P0117 or P0118 are output 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 / Primary / 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 / Gas AF Control / 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 479

Scheme 479
Scheme 479

Scheme 480

Scheme 480
Scheme 480

Scheme 481

Scheme 481
Scheme 481

Scheme 482

Scheme 482
Scheme 482
  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 / Gas AF Control / 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 483

Scheme 483: PROCEDURE
Scheme 483: PROCEDURE

Scheme 484

Scheme 484
Scheme 484
  1. READ OUTPUT DTC (DTC P0136, P0137, P0138, P0139, P0156, P0157, P0158 OR P0159) Connect the Techstream to the DLC3. Turn the engine switch on (IG). 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 *1 Bank 1 *2 Bank 2 *a Component without harness connected (Heated Oxygen Sensor) - - NG --> See step 23 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch to 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 E26-28 (HT1B) - E26-101 (OX1B) Always 10 kohms or higher E26-22 (HT2B) - E26-133 (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 / Gas AF Control / 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 / Gas AF Control / 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 the 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. HINT: Perform "Inspection After Repair" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 E22-1 (HT1B) - E26-28 (HT1B) Always Below 1 ohms E22-3 (OX1B) - E26-101 (OX1B) Always Below 1 ohms E22-4 (E2) - E26-102 (EX1B) Always Below 1 ohms E20-1 (HT2B) - E26-22 (HT2B) Always Below 1 ohms E20-3 (OX2B) - E26-133 (OX2B) Always Below 1 ohms E20-4 (E2) - E26-134 (EX2B) Always Below 1 ohms E22-1 (HT1B) or E26-28 (HT1B) - Body ground Always 10 kohms or higher E22-3 (OX1B) or E26-101 (OX1B) - Body ground Always 10 kohms or higher E20-1 (HT2B) or E26-22 (HT2B) - Body ground Always 10 kohms or higher E20-3 (OX2B) or E26-133 (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-507946-S18879423342012100900000) . 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 engine switch on (IG). 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 HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . B --> END A --> See step 22
  12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-507946-S02645242072012100900000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 engine switch on (IG). 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. HINT: Perform "Inspection After Repair" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  16. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Turn the engine 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 E26-28 (HT1B) - E26-101 (OX1B) Always 10 kohms or higher E26-22 (HT2B) - E26-133 (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 engine switch on (IG). 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-507946-S18879423342012100900000)
  20. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)
  21. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-507946-S18879423342012100900000)
  22. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-507946-S02645242072012100900000)
  23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-507946-S18879423342012100900000)
  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 «DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2)»(ref-507943-S19167494702012100900000)
  25. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  26. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000)

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 moving or stationary, 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. 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.
  6. 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.
  7. 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.

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 in the tank. Improper fuel was used. The spark plugs have been contaminated. The problem requires further diagnosis.
  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 cylinder engine, the ECM intentionally does not set the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P0300 is set. In the event of DTC P0300 being present, perform the following operations: Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not set.
  8. When one of Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-15%, the air fuel ratio may be rich (-15% or less) or lean (+15% or higher).
  9. When Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfires have 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 485

Scheme 485: PROCEDURE
Scheme 485: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 are output A DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 are output, troubleshoot those DTCs first. B --> See step 33 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-507921-S11244323022012100900000) . OK PCV valve and hose are correctly connected 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas Misfire / 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas Misfire / 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 THE CATALYST OT MISFIRE PREVENT F/C) Connect the Techstream to the DLC3. Turn the engine switch on (IG). 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 the engine is either idling or being revved within 3000 rpm. NEXT: Go to next step
  6. READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Gas Misfire / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count, Cylinder #4 Misfire Count, Cylinder #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 procedure [A] and [B] 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 [A]. Read the Cylinder #1 Misfire Count to Cylinder #6 Misfire Count or DTCs displayed on the Techstream [B]. 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 record of the engine coolant temperature is less than 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data 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 3»(ref-507917-S25339895002012100900000) . HINT: Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 34 OK: Go to next step
  8. CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-507917-S25339895002012100900000) . HINT: If the result of the spark test is normal, proceed to the next step. Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NEXT: 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-507911-S37672996572012100900000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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 engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E26-58 (#10) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-54 (#20) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-57 (#30) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-53 (#40) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-56 (#50) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-55 (#60) - E26-25 (E01) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 35 OK: Go to next step
  11. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-507947-S06278865442012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 36 OK: Go to next step
  12. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-507948-S40072061302012100900000) . OK No leaks from intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . NG --> See step 32 OK: Go to next step
  14. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 37 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 (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) See step 5 OK --> See step 27 NG --> See step 38
  17. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-507948-S40072061302012100900000) . OK No leaks from intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . 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-507942-S10168898762012100900000) . NG --> See step 32 OK: Go to next step
  19. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 37 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 (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) See step 5 NG --> See step 38 OK: Go to next step
  22. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-507917-S25339895002012100900000) . HINT: Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 34 OK: Go to next step
  23. CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-507917-S25339895002012100900000) . HINT: If the result of the spark test is normal, proceed to the next step. Perform "Inspection After Repair" after replacing the spark plug or ignition coil assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NEXT: 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-507911-S37672996572012100900000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  25. CHECK ECM TERMINAL VOLTAGE (#10, #20, #30, #40, #50 AND/OR #60) Disconnect the ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E26-58 (#10) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-54 (#20) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-57 (#30) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-53 (#40) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-56 (#50) - E26-25 (E01) Engine switch on (IG) 11 to 14 V E26-55 (#60) - E26-25 (E01) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 35 OK: Go to next step
  26. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-507947-S06278865442012100900000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 36 OK: Go to next step
  27. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-507751-S08160859722012100900000) . HINT: Repair any problems. NEXT: Go to next step
  28. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Start the engine and warm it up. Turn the Techstream on. 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, P0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P0300, P0301, P0302, P0303, P0304, P0305 and/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 SUB-ASSEMBLY - ECM) See step 3 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  30. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Replace the mass air flow meter sub-assembly. Refer to «REMOVAL»(ref-507946-S33841400752012100900000) . 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 sub-assembly. Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NEXT: Go to next step
  31. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Start the engine and warm it up. Turn the Techstream on. 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, P0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 is output) B B --> See step 39 A --> END
  32. CHECK FUEL LINE Check the fuel lines for leaks or blockage. HINT: Perform "Inspection After Repair" after replacing the fuel pump. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 40
  33. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-507773-S15125614812012100900000)
  34. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-507946-S22833039442012100900000)
  35. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-507941-S39674534512012100900000)
  36. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-507947-S28604865482012100900000)
  37. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-507946-S29068191982012100900000)
  38. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-507911-S28897782242012100900000)
  39. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  40. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-507947-S16726965352012100900000)

HINT

  1. DTCs P0327 and P0328 are for the bank 1 knock control sensor circuit.
  2. DTCs P0332 and P0333 are for the bank 2 knock control sensor circuit.
  3. 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.

Scheme 486

Scheme 486: PROCEDURE
Scheme 486: PROCEDURE
  1. READ VALUE USING TECHSTREAM (KNOCK FEEDBACK VALUE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Data List / Primary / Knock Feedback Value. Read the value while driving the vehicle. OK The value changes. HINT: Malfunction does not occur Knock Feedback Value changes Malfunctions occur Knock Feedback Value does not change The Knock Feedback Value change can be confirmed by running the engine with a high load, for example, by activating the air conditioning system and racing the engine. NG --> See step 2 OK --> See step 7
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF KNOCK CONTROL SENSOR) Disconnect the knock control sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition Y1-1 - Y1-2 Engine switch on (IG) 4.5 to 5.5 V Y2-1 - Y2-2 Engine switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to Knock Control Sensor) NG --> See step 4 OK: Go to next step
  3. INSPECT KNOCK CONTROL SENSOR Inspect the knock control sensor. Refer to «INSPECTION»(ref-507946-S26236663092012100900000) . HINT: Perform "Inspection After Repair" after replacing the knock control sensor. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 5 OK --> See step 6
  4. CHECK HARNESS AND CONNECTOR (KNOCK CONTROL SENSOR - ECM) Disconnect the knock control sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Y1-2 - E26-83 (KNK1) Always Below 1 ohms Y1-1 - E26-115 (EKNK) Always Below 1 ohms Y2-2 - E26-84 (KNK2) Always Below 1 ohms Y2-1 - E26-116 (EKN2) Always Below 1 ohms Y1-2 or E26-83 (KNK1) - Body ground Always 10 kohms or higher Y1-1 or E26-115 (EKNK) - Body ground Always 10 kohms or higher Y2-2 or E26-84 (KNK2) - Body ground Always 10 kohms or higher Y2-1 or E26-116 (EKN2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. REPLACE KNOCK CONTROL SENSOR. Refer to «REMOVAL»(ref-507946-S42093757332012100900000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)

HINT

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

Scheme 487

Scheme 487: PROCEDURE
Scheme 487: PROCEDURE
  1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Primary / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. Standard Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the crankshaft position sensor circuit. NG --> See step 2 OK --> See step 6
  2. INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-507946-S24323283612012100900000) . 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 Tester Connection Condition Specified Condition E72-1 - E26-76 (NE+) Always Below 1 ohms E72-2 - E26-109 (NE-) Always Below 1 ohms E72-1 or E26-76 (NE+) - Body ground Always 10 kohms or higher E72-2 or E26-109 (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 Crankshaft position sensor is installed correctly. NG --> See step 8 OK: Go to next step
  5. INSPECT CRANKSHAFT (TEETH OF CRANK ANGLE SENSOR PLATE) Inspect the teeth of the crank angle sensor plate. OK Crank angle sensor plate does not have any cracks or deformation. NG --> See step 9 OK --> See step 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-507773-S29925410012012100900000)
  7. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-507946-S27953984262012100900000)
  8. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-507946-S24525978082012100900000)
  9. REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-507911-S41959420042012100900000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)

HINT

  1. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
  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. 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 488

Scheme 488: PROCEDURE
Scheme 488: PROCEDURE

Scheme 489

Scheme 489
Scheme 489
  1. CHECK TERMINAL VOLTAGE (POWER SOURCE OF VVT SENSOR (FOR INTAKE CAMSHAFT)) Disconnect the VVT sensor (for intake camshaft) connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition E54-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V E60-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to VVT Sensor (for Intake Camshaft)) NG --> See step 8 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM) Disconnect the VVT sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E54-1 (VVR+) - E26-81 (VV1+) Always Below 1 ohms E54-2 (VVR-) - E26-110 (VV1-) Always Below 1 ohms E60-1 (VVL+) - E26-78 (VV2+) Always Below 1 ohms E60-2 (VVL-) - E26-110 (VV1-) Always Below 1 ohms E54-1 (VVR+) or E26-81 (VV1+) - Body ground Always 10 kohms or higher E54-2 (VVR-) or E26-110 (VV1-) - Body ground Always 10 kohms or higher E60-1 (VVL+) or E26-78 (VV2+) - Body ground Always 10 kohms or higher E60-2 (VVL-) or E26-110 (VV1-) - 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 CAMSHAFT)) Check the VVT sensor (for intake camshaft) installation. OK VVT sensor is installed correctly. NG --> See step 9 OK: Go to next step
  4. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF SENSOR PLATE) Inspect the teeth of the sensor plate. OK Sensor plate teeth do not have any cracks or deformation. HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION»(ref-507773-S30241089062012100900000) . NG --> See step 10 OK: Go to next step
  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) See step 5 NG --> See step 11 OK: Go to next step
  6. REPLACE VVT SENSOR (FOR INTAKE CAMSHAFT) Replace the VVT sensor (for intake camshaft). Refer to «REMOVAL»(ref-507946-S09647111352012100900000) . NEXT: Go to next step
  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 OR P0348) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-507773-S23500289082012100900000) . Turn the engine switch off and wait for at least 30 seconds. Start the engine. Turn the Techstream on. 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 P0340, P0342, P0343, P0345, P0347 or P0348 is output A DTC is not output B HINT: If the engine does not start, replace the ECM. B --> END A --> See step 12
  8. CHECK HARNESS AND CONNECTOR (VVT SENSOR (FOR INTAKE CAMSHAFT) - ECM) Disconnect the VVT sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E54-3 (VC) - E26-111 (VCV1) Always Below 1 ohms E60-3 (VC) - E26-111 (VCV1) Always Below 1 ohms E54-3 (VC) or E26-111 (VCV1) - Body ground Always 10 kohms or higher E60-3 (VC) or E26-111 (VCV1) - 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 CAMSHAFT). Refer to «INSTALLATION»(ref-507946-S08443336822012100900000)
  10. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to «REMOVAL»(ref-507911-S10540357362012100900000)
  11. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-507911-S28897782242012100900000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-507946-S38180476022012100900000)

More articles — Engine Control System (Diagnostic Codes (P0010-P0348) (2GR-FE)