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Engine Control System (2TR-FE) (Diagnostic Codes P0010-P0420): Diagnosis Toyota 4Runner V

Testing & Diagnostics 30 illustrations ~15663 words

INSPECTION PROCEDURE

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 545

Scheme 545: PROCEDURE
Scheme 545: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream. OK Tester Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON) HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1], refer to «DATA LIST / ACTIVE TEST»(ref-421953-S34024941762011092600000) . NG --> See step 2 OK --> See step 6
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly, refer to «INSPECTION»(ref-421955-S27104242852011092600000) . Connect the positive (+) battery terminal to terminal 1 and the negative (-) battery terminal to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve assembly. NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) Disconnect the camshaft timing oil control valve assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B52-2 (+) - B37-14 (OC1+) Always Below 1 ohms B52-1 (-) - B37-9 (OC1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B52-2 (+) or B37-14 (OC1+) - Body ground Always 10 kohms or higher B52-1 (-) or B37-9 (OC1-) - Body ground Always 10 kohms or higher Reconnect the camshaft timing oil control valve assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  4. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-421955-S34519218492011092600000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)

HINT

  1. DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC remains stored for a short time even after the system returns to normal. These foreign objects may then be captured by the oil filter.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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. Freeze frame data records the engine condition when malfunctions are detected. 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 of circuits related to this system before performing the following inspection procedure.

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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. Refer to "Data List / Active Test" [A/F Heater Duty #1], refer to «DATA LIST / ACTIVE TEST»(ref-421953-S34024941762011092600000) .

Scheme 546

Scheme 546: PROCEDURE
Scheme 546: PROCEDURE
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor, refer to «INSPECTION»(ref-421955-S39257944352011092600000) . NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B56-2 (+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) Reconnect the air fuel ratio sensor connector. 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 (Check for Open) Tester Connection Condition Specified Condition B56-1 (HA1A) - B38-6 (HA1A) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B56-1 (HA1A) or B38-6 (HA1A) - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0031, P0032 OR P101D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Start the engine. Allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC is not output A DTC P0031, P0032 or P101D is output B B --> See step 8 A --> See step 9
  5. INSPECT INTEGRATION RELAY (A/F) Inspect the integration relay (A/F), refer to «ON-VEHICLE INSPECTION - Step 4»(ref-421955-S22638332972011092600000) . NG --> REPLACE INTEGRATION RELAY OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - INTEGRATION RELAY [A/F]) Disconnect the air fuel ratio sensor connector. Remove the integration relay (A/F) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B56-2 (+B) - 1D-8 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B56-2 (+B) or 1D-8 - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421955-S25491508152011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  10. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)

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

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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. Refer to "Data List / Active Test" [O2 Heater B1S2 and O2 Heater Curr Val B1S2], refer to «DATA LIST / ACTIVE TEST»(ref-421953-S34024941762011092600000) .

Scheme 547

Scheme 547: PROCEDURE
Scheme 547: PROCEDURE
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor, refer to «INSPECTION»(ref-421955-S14551659222011092600000) . NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B55-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) Reconnect the heated oxygen sensor connector. 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 (Check for Open) Tester Connection Condition Specified Condition B55-1 (HT1B) - B38-18 (HT1B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B55-1 (HT1B) or B38-18 (HT1B) - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0037, P0038 OR P102D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Start the engine. Allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC is not output A DTC P0037, P0038 or P102D is output B B --> See step 7 A --> See step 8
  5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the integration relay (EFI relay) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B55-2 (+B) - 1D-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B55-2 (+B) or 1D-4 - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  9. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when a malfunction is detected. 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. Freeze frame data records the engine condition when malfunctions are detected. 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 548

Scheme 548: PROCEDURE
Scheme 548: PROCEDURE

Scheme 549

Scheme 549
Scheme 549
  1. READ VALUE USING TECHSTREAM (MASS AIR FLOW RATE) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Read the values displayed on the Techstream. RESULT Result Proceed to Mass air flow rate is approximately 0.0 g/sec A Mass air flow rate is 271.0 g/sec or more B Mass air flow rate is between 1.0 and 270.0 g/sec* C *: The value changes when the throttle valve is open or closed with the engine running. B --> See step 6 C --> See step 8 A: Go to next step
  2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the mass air flow meter connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B35-1 (+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) Reconnect the mass air flow meter connector. NG --> See step 5 OK: Go to next step
  3. CHECK MASS AIR FLOW METER Check the mass air flow meter, refer to «ON-VEHICLE INSPECTION»(ref-421955-S12235737442011092600000) . NG --> See step 9 OK: Go to next step
  4. 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 B35-3 (VG) - B36-13 (VG) Always Below 1 ohms B35-2 (E2G) - B36-7 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B35-3 (VG) or B36-13 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 10
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY [EFI MAIN RELAY]) Disconnect the mass air flow meter connector. Remove the integration relay (EFI MAIN relay) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B35-1 (+B) - 1D-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B35-1 (+B) or 1D-4 - Body ground Always 10 kohms or higher Reinstall the integration relay. Reconnect the mass air flow meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY [EFI MAIN RELAY]) OK --> See step 11
  6. 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 B35-2 (E2G) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter) Reconnect the mass air flow meter connector. NG --> See step 7 OK --> See step 9
  7. 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 B35-2 (E2G) - B36-7 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B35-2 (E2G) or B36-7 (E2G) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 10
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  11. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)

Scheme 550

Scheme 550: DESCRIPTION
Scheme 550: DESCRIPTION
  1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT 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 see scheme 1
  2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, the voltage at terminal THA changes accordingly. 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 condition is met (2 trip detection logic): The intake air temperature change is small from the previous trip warmup to the following trip. The change in the intake air temperature after engine start is less than the threshold value.Mass air flow meter

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 551

Scheme 551: PROCEDURE
Scheme 551: PROCEDURE

Scheme 552

Scheme 552
Scheme 552
  1. READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. RESULT Result Proceed to Temperature displayed is -40°C (-40°F) A Temperature displayed is 140°C (284°F) or higher B Temperature displayed is 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 140°C (284°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 that there is a good connection at the mass air flow meter. Disconnect the mass air flow meter connector. Connect terminals THA and ETHA of the wire harness connector for 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 and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter) Reconnect the mass air flow meter connector. 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 Tester Connection Condition Specified Condition B35-4 (THA) - B36-12 (THA) Always Below 1 ohms B35-5 (E2) - B36-11 (ETHA) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the mass air flow meter connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM Reconnect the mass air flow meter connector. 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 Tester Connection Condition Specified Condition B35-4 (THA) or B36-12 (THA) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 8
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  7. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421955-S10732600322011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 553

Scheme 553: PROCEDURE
Scheme 553: PROCEDURE

Scheme 554

Scheme 554
Scheme 554
  1. READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. RESULT Result Proceed to Temperature displayed is -40°C (-40°F) A Temperature displayed is 140°C (284°F) B Temperature displayed is between 75°C and 100°C (167°F 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 140°C (284°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 that there is a good connection at the engine coolant temperature sensor. Disconnect the engine coolant temperature sensor connector. Connect terminals 1 and 2 of the wire harness connector for the engine coolant temperature sensor. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector (to Engine Coolant Temperature Sensor) Reconnect the engine coolant temperature sensor connector. 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 B25-2 - B36-18 (THW) Always Below 1 ohms B25-1 - B36-17 (ETHW) Always Below 1 ohms Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 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 ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 Reconnect the engine coolant temperature sensor connector. 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 B25-2 or B36-18 (THW) - Body ground Always 10 kohms or higher Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) OK --> See step 8
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421955-S03198855172011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

HINT

  1. If any of DTCs P0115, P0117, P0118 or P0125 are output simultaneously with DTC P0116, the ECT sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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. Freeze frame data records the engine condition when malfunctions are detected. 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 555

Scheme 555: PROCEDURE
Scheme 555: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION NO. 1 AND THROTTLE POSITION NO. 2) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position No. 2. Read the values displayed on the Techstream. RESULT Throttle Position No. 1 (VTA1) when Accelerator Pedal Released Throttle Position No. 2 (VTA2) when Accelerator Pedal Released Throttle Position No. 1 (VTA1) when Accelerator Pedal Depressed Throttle Position No. 2 (VTA2) when Accelerator Pedal Depressed Trouble Area Proceed to 0 V to 0.2 V 0 V to 0.2 V 0 V to 0.2 V 0 V to 0.2 V VC circuit open A 4.5 V to 5.0 V 4.5 V to 5.0 V 4.5 V to 5.0 V 4.5 V to 5.0 V E2 circuit open 0 V to 0.2 V, or 4.5 V to 5.0 V 2.1 V to 3.1 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 5.0 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or short to ground 0.6 V to 1.4 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 5.0 V 0.6 V to 1.4 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 5.0 V VTA2 circuit open or short to ground 0.5 V to 1.1 V 2.1 V to 3.1 V 3.2 V to 4.8 V (Not fail-safe) 4.6 V to 5.0 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121/41 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 output. 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)" below. B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle body with motor 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 B13-5 (VC) - B36-10 (VCTA) Always Below 1 ohms B13-6 (VTA) - B36-3 (VTA1) Always Below 1 ohms B13-4 (VTA2) - B36-4 (VTA2) Always Below 1 ohms B13-3 (E2) - B36-9 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B13-5 (VC) or B36-10 (VCTA) - Body ground Always 10 kohms or higher B13-6 (VTA) or B36-3 (VTA1) - Body ground Always 10 kohms or higher B13-4 (VTA2) or B36-4 (VTA2) - Body ground Always 10 kohms or higher Reconnect the throttle body with motor assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE POSITION SENSOR - ECM) OK: Go to next step
  3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle body with motor assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B13-5 (VC) - B13-3 (E2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Throttle Body with Motor Assembly) Reconnect the throttle body with motor assembly connector. NG --> See step 6 OK: Go to next step
  4. REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Replace the throttle body with motor assembly, refer to «REMOVAL»(ref-421955-S11077194472011092600000) . 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-421953-S17634125332011092600000) . Start the engine. Allow the engine to idle for 15 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 is output A DTC is not output B B --> END A --> See step 6
  6. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

HINT

  1. If DTC P0115, P0116, P0117 or P0118 is set simultaneously with DTC P0125, the Engine Coolant Temperature (ECT) sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary or stopped, 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. Freeze frame data records the engine condition when malfunctions are detected. 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

Techstream only

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

  1. The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream. Connect the Techstream to the DLC3. Start the engine and 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 and ECT / Active Test / Control the Injection Volume for A/F Sensor. Perform the Control the Injection Volume for A/F Sensor operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume). Monitor the voltage outputs of the air fuel and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
  2. The sensors react in accordance with increases and decreases in the fuel injection volume.

Standard

Tester Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 (Air fuel ratio sensor)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1S2 (Heated oxygen sensor)+25%RichHigher than 0.55 V
12.5%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 Fuel pressure Gas leak from exhaust system (air-fuel ratio extremely rich or lean)

Scheme 556

Scheme 556
Scheme 556

Scheme 557

Scheme 557
Scheme 557

Scheme 558

Scheme 558
Scheme 558

Scheme 559

Scheme 559
Scheme 559
  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor / AFS Voltage B1S1 and O2S B1S2. Then press the graph button on the Data List display.

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 the OX1B wire from the ECM connector is short-circuited to the +B wire, DTC P0138 will be stored.

Scheme 560

Scheme 560: PROCEDURE
Scheme 560: PROCEDURE

Scheme 561

Scheme 561
Scheme 561
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read the DTCs. RESULT Result Proceed to DTC P0138 is output A DTC P0137 is output B DTC P0136 is output C DTC P0139 is output D DTC P0136, P0137 or P0138 and other DTCs are output E B --> See step 9 C --> See step 7 D --> See step 18 E --> See step 32 A: Go to next step
  2. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / O2S B1S2. Allow the engine to idle. Read the heated oxygen sensor output voltage while idling. RESULT Tester Display Proceed to 1 V or higher A Below 1 V B B --> See step 5 A: Go to next step
  3. 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) - 3 (OX1B) Always 10 kohms or higher Reconnect the heated oxygen sensor connector. NG --> See step 23 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B38-18 (HT1B) - B38-13 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 27
  5. PERFORM ACTIVE TEST USING TECHSTREAM (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 and ECT / Active Test / Control the Injection Volume. 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 1% gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1 and the heated oxygen sensor is displayed as O2S B1S2 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. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either below 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 15 OK: Go to next step
  6. INSPECT AIR FUEL RATIO SENSOR HINT: This air fuel ratio sensor test is to check the air fuel ratio sensor current during the fuel-cut. When the sensor is normal, the sensor current will be below 3 mA in this test. Clear DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Drive the vehicle according to the drive pattern listed below. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. Warm up the engine. Drive the vehicle at 60 km/h (40 mph) or more for 10 minutes or more. Stop the vehicle. Accelerate the vehicle to 60 km/h (40 mph) or more and decelerate for 5 seconds or more. Perform this 3 times. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. Confirm that RANGE B1S1 is either PASS or FAIL. If the Techstream shows incomplete, recheck RANGE B1S1 after performing the drive pattern again. HINT: If the Techstream shows incomplete again, increase the vehicle speed and use second gear to decelerate the vehicle. Select RANGE B1S1 and press ENTER. Read the test value. Standard current Below 3.0 mA NOTE: Do not turn the ignition switch off during this step because the test results will be lost. OK --> See step 12 NG --> See step 15
  7. 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 and ECT / Active Test / Control the Injection Volume / All Data / O2S B1S2. Change the fuel injection volume using the Techstream, monitoring the voltage output of the 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 1% gradations within this range. 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. Standard voltage Fluctuates between 0.4 V or less and 0.5 V or higher. NG --> See step 9 OK: Go to next step
  8. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the Techstream on. Start the engine. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. 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 1% gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1 and the heated oxygen sensor is displayed as O2S B1S2 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. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either below 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 15 OK --> CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO AND REPAIR CAUSE (FUEL INJECTOR, FUEL PRESSURE, EXHAUST GAS LEAKAGE, ETC.)
  9. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage from the exhaust manifold and pipe. OK No exhaust gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
  10. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor, refer to «INSPECTION - Step 1»(ref-421955-S11335994022011092600000) . NG --> See step 24 OK: Go to next step
  11. 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 (Check for Open) Tester Connection Condition Specified Condition B55-1 (HT1B) - B38-18 (HT1B) Always Below 1 ohms B55-3 (OX1B) - B38-13 (OX1B) Always Below 1 ohms B55-4 (E2) - B38-14 (EX1B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B55-1 (HT1B) or B38-18 (HT1B) - Body ground Always 10 kohms or higher B55-3 (OX1B) or B38-13 (OX1B) - Body ground Always 10 kohms or higher B55-4 (E2) or B38-14 (EX1B) - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  12. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor, refer to «REMOVAL»(ref-421955-S02330336742011092600000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138 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 and ECT / Utility / All Readiness. Input the DTC: P0136, P0137 and P0138. Check that DTC MONITOR is NORMAL. If DTC MONITOR is INCOMPLETE, perform the drive pattern, increasing the vehicle speed and using second gear to decelerate the vehicle. RESULT Result Proceed to ABNORMAL (P0136, P0137 or P0138 detected) A NORMAL (No DTC output) B B --> END A --> See step 28
  15. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor, refer to «REMOVAL»(ref-421955-S25491508152011092600000) . NEXT: Go to next step
  16. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137 or P0138). NEXT: Go to next step
  17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138 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 and ECT / Utility / All Readiness. Input the DTC: P0136, P0137 or P0138. Check that DTC MONITOR is NORMAL. If DTC MONITOR is INCOMPLETE, perform the drive pattern, increasing the vehicle speed and using second gear to decelerate the vehicle. RESULT Result Proceed to ABNORMAL (P0136, P0137 or P0138 detected) A NORMAL (No DTC output) B B --> END A --> See step 29
  18. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / O2S B1S2. After warming up the engine, run the engine at an engine speed of 2500 RPM for 3 minutes. Idle the engine. Depress the accelerator pedal quickly until the engine speed reaches 2500 RPM 3 times. RESULT Result Proceed to Oxygen sensor output voltage higher than 1.0 V A Oxygen sensor output voltage below 1.0 V B B --> See step 21 A: Go to next step
  19. 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 Reconnect the heated oxygen sensor connector. NG --> See step 25 OK: Go to next step
  20. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B38-18 (HT1B) - B38-13 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 30
  21. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0139). NEXT: Go to next step
  22. CHECK WHETHER DTC OUTPUT RECURS (DTC P0139 IS OUTPUT AGAIN) Read the DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . RESULT Result Proceed to P0139 is output A No DTC is output B B --> See step 26 A --> See step 31
  23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  24. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  25. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  26. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  27. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  28. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421955-S25491508152011092600000)
  29. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  30. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  31. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421955-S02330336742011092600000)
  32. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-421953-S08108164442011092600000)

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 and ECT / Active Test / Control the Injection Volume.
  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) displayed on the Techstream.

HINT

  1. Change the fuel injection volume within the range of -12.0% to +12.0%. 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 (Air fuel ratio)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1S2 (Heated oxygen)+25%RichHigher than 0.55 V
12.5%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 Output Voltage Heated Oxygen Sensor Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leakage 4 Fuel pressure Exhaust gas leakage (Air fuel ratio extremely lean or rich)

Scheme 562

Scheme 562
Scheme 562
  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 and ECT / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2; 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. 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. 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. 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.
  5. 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.

This troubleshooting procedure is based on the premise that the engine is started. If the engine is not started, proceed to Problem Symptoms Table, refer to PROBLEM SYMPTOMS TABLE .

Scheme 563

Scheme 563: PROCEDURE
Scheme 563: PROCEDURE
  1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Body Electrical / Combination Meter / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC B1500 is not output A DTC B1500 is output B B --> See step 16 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the fuel pump / Speed. Check whether operating sounds can be heard while operating the relay using the Techstream. OK Operating sounds can be heard from relay. NG --> See step 6 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM, BODY GROUND) Disconnect the fuel pump ECU 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 Q8-1 (FPC) - F50-15 (FPC) Always Below 1 ohms Q8-2 (DI) - F50-20 (DI) Always Below 1 ohms Q8-3 (E) - Body ground Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Q8-1 (FPC) or F50-15 (FPC) - Body ground Always 10 kohms or higher Q8-2 (DI) or F50-20 (DI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. REPLACE FUEL PUMP ECU Replace the fuel pump ECU, refer to «REMOVAL»(ref-422143-S41161313872011092600000) . NEXT: Go to next step
  5. CONFIRM WHETHER DTC OUTPUT RECURS Check that there are 17 L or more of fuel remaining. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs, refer to «DTC CHECK / CLEAR»(ref-421953-S17634125332011092600000) . Start the engine and idle it for 5 minutes. Drive the vehicle in an urban area for approximately 10 minutes. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0230 is output B B --> See step 17 A --> END
  6. INSPECT CIRCUIT OPENING RELAY (C/OPN) Inspect the circuit opening relay (C/OPN), refer to «ON-VEHICLE INSPECTION - Step 1»(ref-421955-S22638332972011092600000) . NG --> REPLACE CIRCUIT OPENING RELAY (C/OPN) OK: Go to next step
  7. INSPECT CIRCUIT OPENING RELAY (C/OPN) (POWER SOURCE VOLTAGE) Remove the circuit opening relay (C/OPN) from the engine room relay block. 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 Circuit opening relay (C/OPN) terminal 2 - Body ground Ignition switch ON 11 to 14 V Circuit opening relay (C/OPN) terminal 5 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 Circuit Opening Relay (C/OPN) NG --> See step 14 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (C/OPN RELAY - ECM, FUEL PUMP ECU) Remove the circuit opening relay (C/OPN) from the engine room relay block. Disconnect the fuel pump ECU 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 Circuit opening relay (C/OPN) terminal 1 - F50-25 (FC) Always Below 1 ohms Circuit opening relay (C/OPN) terminal 3 - Q8-4 (+B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Circuit opening relay (C/OPN) terminal 1 or F50-25 (FC) - Body ground Always 10 kohms or higher Circuit opening relay (C/OPN) terminal 3 or Q8-4 (+B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP ECU) Disconnect the fuel pump connector. Disconnect the fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition Q5-4 (B2) - Q9-1 (FP) Always Below 1 ohms Q5-5 (E2) - Q9-2 (FP-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Q5-4 (B2) or Q9-1 (FP) - Body ground Always 10 kohms or higher Q5-5 (E2) or Q9-2 (FP-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  10. INSPECT FUEL PUMP Inspect the fuel pump, refer to «INSPECTION»(ref-422143-S23123181462011092600000) . NG --> See step 18 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM, BODY GROUND) Disconnect the fuel pump ECU 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 Q8-1 (FPC) - F50-15 (FPC) Always Below 1 ohms Q8-2 (DI) - F50-20 (DI) Always Below 1 ohms Q8-3 (E) - Body ground Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Q8-1 (FPC) or F50-15 (FPC) - Body ground Always 10 kohms or higher Q8-2 (DI) or F50-20 (DI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  12. REPLACE FUEL PUMP ECU Replace the fuel pump ECU, refer to «REMOVAL»(ref-422143-S05273439702011092600000) . NEXT: Go to next step
  13. CONFIRM 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-421953-S17634125332011092600000) . Start the engine and idle it for 5 minutes. Drive the vehicle in an urban area for approximately 10 minutes. Enter the following menus: Powertrain / Engine and ECT/ Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0230 is output B B --> See step 19 A --> END
  14. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY (C/OPN) - INTEGRATION RELAY) Remove the circuit opening relay (C/OPN) from the engine room relay block. Remove the IGN fuse from the engine room relay block. Remove the integration relay from the engine room junction block. Disconnect the 1B integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition Circuit opening relay (C/OPN) terminal 2 - 1C-4 Always Below 1 ohms Circuit opening relay (C/OPN) terminal 5 - 1D-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition Circuit opening relay (C/OPN) terminal 2 or 1C-4 - Body ground Always 10 kohms or higher Circuit opening relay (C/OPN) terminal 5 or 1D-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 15
  15. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)
  16. GO TO DTC B1500. Refer to «DTC B1500: Fuel Sender Open Detected»(ref-422130-S22165829632011092600000)
  17. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  18. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422143-S05273439702011092600000)
  19. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

Scheme 564

Scheme 564: DESCRIPTION
Scheme 564: DESCRIPTION
*1Camshaft Position Sensor
*2Crankshaft Position Sensor
*3ECM

TEXT IN ILLUSTRATION

When the engine misfires, high concentrations of hydrocarbons enter the exhaust gas. High hydrocarbon concentration levels can cause an increase in exhaust emissions 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 rate. 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 VVT sensor and crankshaft position sensor. The VVT 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, 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 detected (2 trip detection logic): High temperature misfire occurs in the three-way catalytic converter (MIL blinks). Catalyst deterioration misfire occurs (MIL illuminates).Open or short in engine wire harness Connector connections 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 connection Intake system ECM
P0301 P0302 P0303 P0304Misfiring of a specific cylinder occurs and one of the following conditions is detected (2 trip detection logic): High temperature misfire occurs in the three-way catalytic converter (MIL blinks). Catalyst deterioration misfire occurs (MIL illuminates).

When DTCs for misfiring cylinders are randomly 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. Freeze frame data records the engine condition when malfunctions are detected. 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 freeze frame data.
  4. If the misfire still cannot be reproduced even though the conditions stored in the freeze frame data have been reproduced, one of the following factors can be considered to be a possible cause of the problem: The fuel level is low. Improper fuel was used. The spark plugs are dirty. The problem is complex and involves multiple factors.
  5. After finishing repairs, check that no misfire occurs in any cylinder (Cylinder #1, #2, #3 and #4).
  6. Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after the repairs.
  7. When either Short FT #1 or Long FT #1 values in the freeze frame data are not within 20% of the central value, the air fuel ratio may be rich (-20% or less) or lean (+20% or more).
  8. When the Coolant Temp in the freeze frame data is below 75°C (167°F), the misfires occurred only while warming up the engine.

Scheme 565

Scheme 565: PROCEDURE
Scheme 565: PROCEDURE

Scheme 566

Scheme 566
Scheme 566

Scheme 567

Scheme 567
Scheme 567
  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE CODES) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0300, P0301, P0302, P0303 and/or P0304 is output A DTC P0300, P0301, P0302, P0303 and/or P0304 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303 and P0304 are output, troubleshoot those DTCs first. B --> See step 40 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections, refer to «ON-VEHICLE INSPECTION - Step 3»(ref-422107-S17564895802011092600000) . OK PCV hose is correctly connected and is not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
  3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Display Item Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/ C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and the engine is either idling or being revved at 3000 RPM or less. NEXT: Go to next step
  6. READ VALUE USING TECHSTREAM (MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Cylinder #1 (to #4) Misfire Count. Drive the vehicle at the engine speed and engine load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedure above. Read Cylinder #1 (to #4) Misfire Count or the DTCs displayed on the Techstream. RESULT Misfire Count or DTC Result Proceed to Most misfires occur in only 1 or 2 cylinders, or misfire DTCs for only 1 or 2 cylinders are output A 3 cylinders or more have equal misfire counts, or misfire DTCs for 3 or more cylinders are output 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 engine coolant temperature 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 19 A: Go to next step
  7. CHECK SPARK PLUG Check the spark plug of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422103-S20815812362011092600000) . NG --> See step 41 OK: Go to next step
  8. CHECK FOR SPARK AND IGNITION Perform a spark test, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422103-S20815812362011092600000) . NG --> See step 36 OK: Go to next step
  9. CHECK CYLINDER COMPRESSION PRESSURE OF MISFIRING CYLINDER Measure the cylinder compression pressure of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 11»(ref-422095-S22900254572011092600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  10. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B1-2 - Body ground Ignition switch ON 11 to 14 V B2-2 - Body ground Ignition switch ON 11 to 14 V B3-2 - Body ground Ignition switch ON 11 to 14 V B4-2 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) Reconnect the fuel injector assembly connector. NG --> See step 42 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector 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 B1-1 - B39-6 (#10) Always Below 1 ohms B2-1 - B39-7 (#20) Always Below 1 ohms B3-1 - B39-8 (#30) Always Below 1 ohms B4-1 - B39-9 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B1-1 or B39-6 (#10) - Body ground Always 10 kohms or higher B2-1 or B39-7 (#20) - Body ground Always 10 kohms or higher B3-1 or B39-8 (#30) - Body ground Always 10 kohms or higher B4-1 or B39-9 (#40) - Body ground Always 10 kohms or higher Reconnect the fuel injector assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK: Go to next step
  12. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30 AND/OR #40 VOLTAGE) Disconnect the ECM connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B39-6 (#10) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-7 (#20) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-8 (#30) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-9 (#40) - B39-11 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) Reconnect the ECM connector. NG --> See step 38 OK: Go to next step
  13. 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-422143-S37633170572011092600000) . NG --> See step 43 OK: Go to next step
  14. CHECK INTAKE SYSTEM Check the intake system for vacuum leakage, refer to «ON-VEHICLE INSPECTION»(ref-422148-S19823457642011092600000) . OK No leakage from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  15. CHECK FUEL PRESSURE Check the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422149-S00000012412011092600000) . NG --> See step 39 OK: Go to next step
  16. 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 and ECT / Data List / Coolant Temp. Read Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient air temperature. With warm engine Between 75°C and 100°C (167°F and 212°F). NG --> See step 44 OK: Go to next step
  17. 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 and ECT / Data List / All Data / MAF, Coolant Temp and Engine Speed. Allow the engine to idle until the Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 RPM. Standard Between 10.7 g/sec. and 13.1 g/sec. (shift lever: N; A/C: Off). NG --> See step 31 OK: Go to next step
  18. CHECK VALVE TIMING Remove the cylinder head cover, refer to «REMOVAL»(ref-422095-S05888635252011092600000) . Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover. Check that the timing marks on the camshaft timing gears are aligned as shown in the illustration. OK Timing marks on the camshaft timing gears are aligned as shown in illustration. TEXT IN ILLUSTRATION *a Timing Mark Reinstall the cylinder head cover, refer to «INSTALLATION»(ref-422095-S06626874772011092600000) . OK --> See step 31 NG --> See step 49
  19. CHECK INTAKE SYSTEM Check the intake system for vacuum leakage, refer to «ON-VEHICLE INSPECTION»(ref-422148-S19823457642011092600000) . OK No leakage from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  20. CHECK FUEL PRESSURE Check the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422149-S00000012412011092600000) . NG --> See step 39 OK: Go to next step
  21. 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 and ECT / Data List / Coolant Temp. Read Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient air temperature. With warm engine Between 75°C and 100°C (167°F and 212°F). NG --> See step 44 OK: Go to next step
  22. 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 and ECT / Data List / All Data / MAF, Coolant Temp and Engine Speed. Allow the engine to idle until the Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 RPM. Standard Between 10.7 g/sec. and 13.1 g/sec. (shift lever: N; A/C: Off). NG --> See step 31 OK: Go to next step
  23. CHECK VALVE TIMING Remove the cylinder head cover, refer to «REMOVAL»(ref-422095-S05888635252011092600000) . Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover. Check that the timing marks on the camshaft timing gears are aligned as shown in the illustration. OK Timing marks on the camshaft timing gears are aligned as shown in illustration. TEXT IN ILLUSTRATION *a Timing Mark Reinstall the cylinder head cover, refer to «INSTALLATION»(ref-422095-S06626874772011092600000) . NG --> See step 49 OK: Go to next step
  24. CHECK SPARK PLUG Check the spark plug of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422103-S20815812362011092600000) . NG --> See step 41 OK: Go to next step
  25. CHECK FOR SPARK AND IGNITION (SPARK TEST) Perform a spark test, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422103-S20815812362011092600000) . NG --> See step 36 OK: Go to next step
  26. CHECK CYLINDER COMPRESSION PRESSURE OF MISFIRING CYLINDER Measure the cylinder compression pressure of the misfiring cylinder, refer to «ON-VEHICLE INSPECTION - Step 11»(ref-422095-S22900254572011092600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  27. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B1-2 - Body ground Ignition switch ON 11 to 14 V B2-2 - Body ground Ignition switch ON 11 to 14 V B3-2 - Body ground Ignition switch ON 11 to 14 V B4-2 - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Injector Assembly) Reconnect the fuel injector assembly connector. NG --> See step 42 OK: Go to next step
  28. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector 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 B1-1 - B39-6 (#10) Always Below 1 ohms B2-1 - B39-7 (#20) Always Below 1 ohms B3-1 - B39-8 (#30) Always Below 1 ohms B4-1 - B39-9 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B1-1 or B39-6 (#10) - Body ground Always 10 kohms or higher B2-1 or B39-7 (#20) - Body ground Always 10 kohms or higher B3-1 or B39-8 (#30) - Body ground Always 10 kohms or higher B4-1 or B39-9 (#40) - Body ground Always 10 kohms or higher Reconnect the fuel injector assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK: Go to next step
  29. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30 AND/OR #40 VOLTAGE) Disconnect the ECM connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B39-6 (#10) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-7 (#20) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-8 (#30) - B39-11 (E01) Ignition switch ON 11 to 14 V B39-9 (#40) - B39-11 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) Reconnect the ECM connector. NG --> See step 38 OK: Go to next step
  30. 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-422143-S37633170572011092600000) . NG --> See step 47 OK: Go to next step
  31. 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-421949-S41663372572011092600000) . HINT: Repair any problems. NEXT: Go to next step
  32. 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-421953-S17634125332011092600000) . 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 and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or 0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (P0300, P0301, P0302, P0303 or 0304 is output) A NORMAL (No DTC output) B B --> END A: Go to next step
  33. 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 B35-3 (VG) - B36-13 (VG) Always Below 1 ohms B35-2 (E2G) - B36-7 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B35-3 (VG) or B36-13 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK: Go to next step
  34. REPLACE MASS AIR FLOW METER Replace the mass air flow meter, refer to «REMOVAL»(ref-421955-S10732600322011092600000) . HINT: If the results of the inspections performed in steps 17 and 22 indicated no problem, proceed to the next step without replacing the mass air flow meter. NEXT: Go to next step
  35. 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-421953-S17634125332011092600000) . 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 and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or 0304. Check the DTC judgment result. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303 or 0304 is output) B B --> See step 45 A --> END
  36. REPLACE SPARK PLUG WITH NORMAL ONE AND CHECK SPARK OF MISFIRING CYLINDER Replace the installed spark plug with a spark plug that functions normally. Perform a spark test. WARNING: Always disconnect all fuel injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug to the ignition coil and connect the ignition coil connectors. Disconnect the fuel injector connectors. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 37 OK --> See step 41
  37. REPLACE IGNITION COIL WITH NORMAL ONE AND CHECK SPARK OF MISFIRING CYLINDER Replace the ignition coil with an ignition coil that functions normally. Perform a spark test. WARNING: During the test, disconnect all the injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug to the ignition coil and connect the ignition coil connector. Disconnect the 4 fuel injector connectors. Touch the spark plug assembly to the cylinder head. Crank the engine for less than 2 seconds and check for sparks. OK Sparks jump across electrode gap. NG --> See step 45 OK --> See step 46
  38. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B39-11 (E01) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BODY GROUND) OK --> See step 43
  39. CHECK FUEL LINE Check the fuel lines for leaks or blockage, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422149-S00000012412011092600000) . OK No leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 48
  40. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-421953-S08108164442011092600000)
  41. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-421955-S17118500252011092600000)
  42. CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-422140-S13131865432011092600000)
  43. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-422143-S42633620052011092600000)
  44. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421955-S03198855172011092600000)
  45. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  46. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-421955-S17118500252011092600000)
  47. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-422143-S42633620052011092600000)
  48. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422143-S05273439702011092600000)
  49. ADJUST VALVE TIMING. Refer to «REMOVAL»(ref-422095-S05888635252011092600000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 568

Scheme 568: PROCEDURE
Scheme 568: 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 and ECT / Data List / Knock Feedback Value. Read the values displayed on the Techstream while the vehicle is being driven. OK The values change. HINT: Malfunction does not occur Knock feedback values change Malfunction occurs Knock feedback values do 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 5
  2. INSPECT ECM (KNK1 VOLTAGE) Disconnect the knock sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition e3-2 - e3-1 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Knock Sensor) Reconnect the knock sensor connector. NG --> See step 4 OK: Go to next step
  3. INSPECT KNOCK SENSOR Inspect the knock sensor, refer to «INSPECTION»(ref-421955-S14132916272011092600000) . NG --> See step 7 OK --> See step 6
  4. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) 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 e3-2 - B36-6 (KNK1) Always Below 1 ohms e3-1 - B36-5 (EKNK) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition e3-2 or B36-6 (KNK1) - Body ground Always 10 kohms or higher e3-1 or B36-5 (EKNK) - Body ground Always 10 kohms or higher Reconnect the knock sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - KNOCK SENSOR) OK --> See step 6
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  7. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-421955-S06995183132011092600000)
  1. Before inspecting the crankshaft position sensor, perform the following inspections which concern the camshaft position sensor.
  2. Check that the camshaft position sensor connector is securely connected, is not loose, does not rattle, etc.
  3. Check that the camshaft position sensor is not loose, does not rattle, etc.
  4. Check that the camshaft timing gear is installed properly.
  5. Perform the Active Test under the conditions* from the time the noise occurred described by the customer (for example, while driving the vehicle) and check if the noise stops. HINT: *: Some examples of conditions are idling, racing the engine and driving at full throttle.

HINT

  1. Troubleshoot for DTCs P0335 and P0339 first. If the trouble area cannot be determined, there may be a mechanical malfunction.
  2. Check the engine speed. The engine speed can be checked by 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 and ECT / Data List / Engine Speed. The engine speed may be indicated as zero despite the crankshaft revolving 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. Freeze frame data records the engine condition when malfunctions are detected. 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 569

Scheme 569: PROCEDURE
Scheme 569: 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 and ECT / 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 at 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 (RESISTANCE) Inspect the crankshaft position sensor, refer to «INSPECTION»(ref-421955-S28092884892011092600000) . 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 B51-1 - B37-12 (NE) Always Below 1 ohms B51-2 - B37-5 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B51-1 or B37-12 (NE) - Body ground Always 10 kohms or higher B51-2 or B37-5 (NE-) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) OK: Go to next step
  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation condition. OK Sensor is installed correctly. NG --> See step 8 OK: Go to next step
  5. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate teeth do not have any cracks or deformation. NG --> REPLACE CRANKSHAFT POSITION SENSOR PLATE OK --> See step 9
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421953-S36764272642011092600000)
  7. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-421955-S06054101612011092600000)
  8. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-421955-S06054101612011092600000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

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 570

Scheme 570: PROCEDURE
Scheme 570: PROCEDURE
  1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE) Inspect the camshaft position sensor, refer to «INSPECTION»(ref-421955-S20214775262011092600000) . NG --> See step 8 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft 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 B50-1 (G2) - B37-11 (G2) Always Below 1 ohms B50-2 (G-) - B37-5 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B50-1 (G2) or B37-11 (G2) - Body ground Always 10 kohms or higher B50-2 (G-) or B37-5 (NE-) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the camshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) Check the camshaft position sensor installation condition. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
  4. CHECK VALVE TIMING Check the valve timing. HINT: There are no marks on the cylinder head to match-up for the purpose of checking valve timing. Valve timing can only be inspected by lining up the colored plates on the timing chain with the marks on the pulleys. It may be necessary to remove and re-install the chain to match-up the timing marks, refer to «INSTALLATION - Step 5»(ref-422095-S31729269002011092600000) . NG --> See step 10 OK: Go to next step
  5. INSPECT CAMSHAFT Check the teeth of the camshaft. OK Camshaft teeth do not have any cracks or deformation. NG --> See step 11 OK: Go to next step
  6. REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor, refer to «REMOVAL»(ref-421955-S27377234752011092600000) . NEXT: Go to next step
  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340) 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-421953-S17634125332011092600000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC is not output A DTC P0340 is output B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
  8. REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-421955-S27377234752011092600000)
  9. SECURELY REINSTALL CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-421955-S27377234752011092600000)
  10. ADJUST VALVE TIMING. Refer to «INSTALLATION - Step 5»(ref-422095-S31729269002011092600000)
  11. REPLACE CAMSHAFT. Refer to «REMOVAL»(ref-422095-S05888635252011092600000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)

HINT

  1. The following inspection procedure is for the No. 1 cylinder. If any of the other cylinders are malfunctioning, inspect their circuits by referring to the following procedure.
  2. If DTC P0351 is output, check the ignition coil assembly No. 1 circuit.
  3. If DTC P0352 is output, check the ignition coil assembly No. 2 circuit.
  4. If DTC P0353 is output, check the ignition coil assembly No. 3 circuit.
  5. If DTC P0354 is output, check the ignition coil assembly No. 4 circuit.
  6. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 571

Scheme 571: PROCEDURE
Scheme 571: PROCEDURE
  1. CHECK DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / DTC. Read the DTCs. RESULT Result Proceed to DTC P0351, P0352, P0353 or P0354 is output A DTC P0351, P0352, P0353 and P0354 are output B B --> See step 6 A: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354) 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-421953-S17634125332011092600000) . Shuffle the arrangement of the ignition coil assemblies (among the No. 1 to No. 4 cylinders). NOTE: Do not shuffle the connectors. Perform a simulation test. Check the DTCs output to the Techstream. RESULT Result Proceed to Same DTC output A Different ignition coil assembly DTC output B B --> See step 7 A: Go to next step
  3. CHECK IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B7-1 (+B) - B7-4 (GND) Ignition switch ON 11 to 14 V B8-1 (+B) - B8-4 (GND) Ignition switch ON 11 to 14 V B9-1 (+B) - B9-4 (GND) Ignition switch ON 11 to 14 V B10-1 (+B) - B10-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) Reconnect the ignition coil assembly connectors. NG --> See step 9 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 B7-2 (IGF) - B39-10 (IGF1) Always Below 1 ohms B8-2 (IGF) - B39-10 (IGF1) Always Below 1 ohms B9-2 (IGF) - B39-10 (IGF1) Always Below 1 ohms B10-2 (IGF) - B39-10 (IGF1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B7-2 (IGF) or B39-10 (IGF1) - Body ground Always 10 kohms or higher B8-2 (IGF) or B39-10 (IGF1) - Body ground Always 10 kohms or higher B9-2 (IGF) or B39-10 (IGF1) - Body ground Always 10 kohms or higher B10-2 (IGF) or B39-10 (IGF1) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) OK: Go to next step
  5. 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 B7-3 (IGT1) - B39-1 (IGT1) Always Below 1 ohms B8-3 (IGT2) - B39-2 (IGT2) Always Below 1 ohms B9-3 (IGT3) - B39-3 (IGT3) Always Below 1 ohms B10-3 (IGT4) - B39-4 (IGT4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B7-3 (IGT1) or B39-1 (IGT1) - Body ground Always 10 kohms or higher B8-3 (IGT2) or B39-2 (IGT2) - Body ground Always 10 kohms or higher B9-3 (IGT3) or B39-3 (IGT3) - Body ground Always 10 kohms or higher B10-3 (IGT4) or B39-4 (IGT4) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) OK --> See step 8
  6. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) Disconnect the ignition coil assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B7-4 (GND) - Body ground Always Below 1 ohms B8-4 (GND) - Body ground Always Below 1 ohms B9-4 (GND) - Body ground Always Below 1 ohms B10-4 (GND) - Body ground Always Below 1 ohms Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) OK: Go to next step
  7. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-421955-S17118500252011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421955-S17323454082011092600000)
  9. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY [IG2]) Disconnect the ignition coil assembly connectors. Remove the integration relay from the engine room relay block. Disconnect the integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B7-1 (+B) - 1C-5 Always Below 1 ohms B8-1 (+B) - 1C-5 Always Below 1 ohms B9-1 (+B) - 1C-5 Always Below 1 ohms B10-1 (+B) - 1C-5 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B7-1 (+B) or 1C-5 - Body ground Always 10 kohms or higher B8-1 (+B) or 1C-5 - Body ground Always 10 kohms or higher B9-1 (+B) or 1C-5 - Body ground Always 10 kohms or higher B10-1 (+B) or 1C-5 - Body ground Always 10 kohms or higher Reconnect the integration relay connector. Reinstall the integration relay. Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - INTEGRATION RELAY [IG2]) OK --> See step 10
  10. CHECK ECU POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422140-S00333349102011092600000)

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 572

Scheme 572: PROCEDURE
Scheme 572: PROCEDURE
  1. INSPECT AIR SWITCHING VALVE ASSEMBLY Inspect the air switching valve assembly, refer to «INSPECTION»(ref-422150-S33171783862011092600000) . NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE ASSEMBLY - BODY GROUND) Disconnect the air switching valve assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B53-1 - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Switching Valve Assembly) Reconnect the air switching valve assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE ASSEMBLY - AIR INJECTION CONTROL DRIVER) Disconnect the air switching valve assembly connector. Disconnect the air injection control driver connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B53-2 - A10-6 (VV) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B53-2 or A10-6 (VV) - Body ground Always 10 kohms or higher Reconnect the air switching valve assembly connector. Reconnect the air injection control driver connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
  4. REPLACE AIR SWITCHING VALVE ASSEMBLY. Refer to «REMOVAL»(ref-422150-S41822247572011092600000)
  5. REPLACE AIR INJECTION CONTROL DRIVER. Refer to «REMOVAL»(ref-422150-S18310450202011092600000)

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.

CONDITIONING FOR SENSOR TESTING

HINT

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

Scheme 573

Scheme 573: CONDITIONING FOR SENSOR TESTING
Scheme 573: CONDITIONING FOR SENSOR TESTING
  1. (a) Connect the Techstream to the DLC3.
  2. (b) Start the engine and warm it up with all the accessories switched off until the engine coolant temperature stabilizes.
  3. (c) Run the engine at an engine speed of between 2500 RPM and 3000 RPM for at least 3 minutes.
  4. (d) While running the engine at 3000 RPM and 2000 RPM alternating at 2 second intervals, check the waveforms of the air fuel ratio and heated oxygen sensors using the Techstream.

HINT

  1. If the voltage output of the air fuel ratio or heated oxygen sensor does not fluctuate, or there is noise in the waveform of either sensor, the sensor may be malfunctioning.
  2. If the voltage outputs of both sensors remain lean or rich, the air fuel ratio may be extremely lean or rich. In such cases, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for air fuel ratio sensor.
  3. If the three-way catalytic converter has deteriorated, the heated oxygen sensor (located behind the three-way catalytic converter) voltage output fluctuates up and down frequently, even under normal driving conditions (active air fuel ratio control is not performed).

Scheme 574

Scheme 574
Scheme 574

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.

More articles — Engine Control System (2TR-FE) (Diagnostic Codes P0010-P0420)