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Engine Control System (1GR-FE) (Diagnostic Codes (P0010-P0333): Diagnosis Toyota 4Runner V

Testing & Diagnostics 22 illustrations ~13691 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.

HINT

DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

HINT

Abnormal bankTiming Over-advanced (Valve Timing is Out of Specified Range)Timing Over-retarded (Valve Timing is Out of Specified Range)
Bank 1P0011P0012
Bank 2P0021P0022
  1. If DTC P0011 or P0012 is output, check the right bank VVT system for intake camshaft circuit (bank 1).
  2. Bank 1 refers to the bank that includes cylinder No. 1.
  3. If DTC P0021 or P0022 is output, check the left bank VVT system for intake camshaft circuit (bank 2).
  4. Bank 2 refers to the bank that does not include cylinder No. 1.
  5. 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 374

Scheme 374: PROCEDURE
Scheme 374: PROCEDURE

Scheme 375

Scheme 375
Scheme 375
  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read DTCs. RESULT Display (DTC Output) Proceed to P0011, P0012, P0021 or P0022 A P0011, P0012, P0021 or P0022 and other DTCs B HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first. B --> See step 8 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE) Connect the Techstream to the DLC3. Start the engine. Warm up the engine. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2). Check the engine speed while operating the camshaft timing oil control valve using the Techstream. OK Techstream Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve switched from OFF to ON) HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1, VVT OCV Duty #2 and VVT Change Angle #2]. Refer to «DATA LIST / ACTIVE TEST»(ref-421952-S15138037352011092600000) . NG --> See step 4 OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read DTCs using the Techstream. OK No DTC output. NG --> See step 4 OK --> END
  4. CHECK VALVE TIMING (CHECK FOR LOOSE TEETH AND WHETHER TIMING CHAIN HAS JUMPED TOOTH) Remove the cylinder head cover RH and LH. TEXT IN ILLUSTRATION *1 Timing Mark Turn the crankshaft pulley and align its groove with the "0" timing mark on the timing chain cover. Check that the timing marks on the camshaft timing gears are aligned with the timing marks of the bearing cap as shown in the illustration. If not, turn the crankshaft 1 revolution (360°), and then align the marks as above. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. Reinstall the cylinder head cover RH and LH. NG --> See step 9 OK: Go to next step
  5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly. Refer to «INSPECTION - Step 1»(ref-421954-S15004613002011092600000) . NG --> See step 10 OK: Go to next step
  6. INSPECT OIL CONTROL VALVE FILTER AND PIPE Remove the oil pipe No. 1 or No. 2. TEXT IN ILLUSTRATION *1 No. 1 Oil Pipe *2 No. 2 Oil Pipe Remove the OCV filter. Check that the filter and pipe are not clogged. OK The filter and pipe are not clogged. Reinstall the OCV filter. Reinstall the oil pipe No. 1 or No. 2. NG --> See step 11 OK: Go to next step
  7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY NEXT: Go to next step
  8. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-421952-S27905813582011092600000)
  9. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-422094-S42016673532011092600000)
  10. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-421954-S26745234372011092600000)
  11. REPLACE OIL CONTROL VALVE FILTER AND PIPE. Refer to «DISASSEMBLY»(ref-422094-S07769615052011092600000)
  12. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream. Drive the vehicle for more than 10 minutes. Read output DTCs using the Techstream. OK No DTC output. HINT: DTC P0011, P0012, P0021 or P0022 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes will remain stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. NG --> See step 13 OK --> SYSTEM OK
  13. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)

HINT

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

Abnormal bankTiming Over-advanced (Valve Timing is Out of Specified Range)Timing Over-retarded (Valve Timing is Out of Specified Range)
Bank 1P0014P0015
Bank 2P0024P0025
  1. If DTC P0014 or P0015 is output, check the bank 1 VVT system for exhaust camshaft circuit.
  2. Bank 1 refers to the bank that includes cylinder No. 1.
  3. If DTC P0024 or P0025 is output, check the bank 2 VVT system for exhaust camshaft circuit.
  4. Bank 2 refers to the bank that does not include cylinder No. 1.
  5. 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.

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 for 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-421952-S15138037352011092600000) .

Scheme 376

Scheme 376: PROCEDURE
Scheme 376: PROCEDURE
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION - Step 1»(ref-421954-S11432199172011092600000) . NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (+B OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B26-2 (+B) - Body ground Ignition switch ON 11 to 14 V B27-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *A Bank 1 *B Bank 2 *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 Tester Connection Condition Specified Condition B26-1 (HA1A) - B39-17 (HA1A) Always Below 1 ohms B27-1 (HA2A) - B39-19 (HA2A) Always Below 1 ohms B26-1 (HA1A) or B39-17 (HA1A) - Body ground Always 10 kohms or higher B27-1 (HA2A) or B39-19 (HA2A) - 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 Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output pending DTCs using the Techstream. RESULT Display (DTC Output) Proceed to No pending DTC is output A Pending DTC P0031, P0032, P0051, P0052, P101D or P103D is output B B --> See step 8 A --> See step 10
  5. INSPECT NO. 1 INTEGRATION RELAY (A/F) Inspect the No. 1 integration relay (A/F). Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-421954-S26564262792011092600000) . NG --> See step 9 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY (A/F) - A/F SENSOR AND BODY GROUND) Disconnect the air fuel ratio sensor connector. Remove the No. 1 integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B26-2 (+B) - 1D-8 Always Below 1 ohms B27-2 (+B) - 1D-8 Always Below 1 ohms 1D-7 - Body ground Always Below 1 ohms B26-2 (+B) or 1D-8 - Body ground Always 10 kohms or higher B27-2 (+B) or 1D-8 - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reinstall the No. 1 integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421954-S24359359142011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  9. REPLACE NO. 1 INTEGRATION RELAY. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422128-S15085534132011092600000)
  10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  11. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422119-S26633688592011092600000)

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

HINT

  1. Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly.
  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.

Scheme 377

Scheme 377: PROCEDURE
Scheme 377: PROCEDURE
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION - Step 1»(ref-421954-S17940809402011092600000) . NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (+B OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Specified Condition B29-2 (+B) - Body ground 11 to 14 V B30-2 (+B) - Body ground 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor Bank 1) *b Front view of wire harness connector (to Heated Oxygen Sensor Bank 2) 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 Tester Connection Condition Specified Condition B29-1 (HT1B) - B39-12 (HT1B) Always Below 1 ohms B30-1 (HT2B) - B39-13 (HT2B) Always Below 1 ohms B29-1 (HT1B) or B39-12 (HT1B) - Body ground Always 10 kohms or higher B30-1 (HT2B) or B39-13 (HT2B) - 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 Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream ON. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read the output pending DTCs using the Techstream. RESULT Result Proceed to No pending DTC is output A Pending DTC P0037, P0038, P0057, P0058, P0141, P0161, P102D and/or P105D is output B B --> See step 8 A --> See step 10
  5. INSPECT NO. 1 INTEGRATION RELAY (EFI MAIN) Inspect the No. 1 integration relay (EFI MAIN). Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-421954-S26564262792011092600000) . NG --> See step 9 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - NO. 1 INTEGRATION RELAY (EFI MAIN)) Disconnect the heated oxygen sensor connector. Remove the No. 1 integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B29-2 (+B) - 1D-4 Always Below 1 ohms B30-2 (+B) - 1D-4 Always Below 1 ohms B29-2 (+B) or 1D-4 - Body ground Always 10 kohms or higher B30-2 (+B) or 1D-4 - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reinstall the No. 1 integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  7. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421954-S24008159712011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  9. REPLACE NO. 1 INTEGRATION RELAY. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422128-S15085534132011092600000)
  10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  11. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422119-S26633688592011092600000)

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 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 378

Scheme 378: PROCEDURE
Scheme 378: PROCEDURE
  1. READ VALUE USING TECHSTREAM (MASS AIR FLOW RATE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF. Read the values displayed on the Techstream. RESULT Mass Air Flow Rate (g/sec.) Proceed to 0.0 A 271.0 or more B Between 1.0 and 270.0*1 C HINT: *1: The value must change 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. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B35-3 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter) Reconnect the mass air flow meter connector. NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B35-5 (VG) - B37-14 (VG) Always Below 1 ohms B35-4 (E2G) - B37-13 (E2G) Always Below 1 ohms B35-5 (VG) or B37-14 (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 OK: Go to next step
  4. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION»(ref-421954-S24385836112011092600000) . NG --> See step 9 OK --> See step 10
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - NO. 1 INTEGRATION RELAY (EFI MAIN)) Disconnect the mass air flow meter connector. Remove the No. 1 integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B35-3 (+B) - 1D-4 Always Below 1 ohms B35-3 (+B) or 1D-4 - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reinstall the No. 1 integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 B35-4 (E2G) - Body ground Always Below 1 ohms NG --> See step 7 OK --> REPLACE MASS AIR FLOW METER
  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 Tester Connection Condition Specified Condition B35-5 (VG) - B37-14 (VG) Always Below 1 ohms B35-4 (E2G) - B37-13 (E2G) Always Below 1 ohms B35-5 (VG) or B37-14 (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 OK --> See step 12
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421954-S12208818912011092600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  11. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422119-S26633688592011092600000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)

Scheme 379

Scheme 379: DESCRIPTION
Scheme 379: DESCRIPTION
  1. The intake air temperature sensor, mounted on the mass air flow meter, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature 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 intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111Either condition is met (2 trip detection logic): The intake air temperature change is small from the previous trip warm-up 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 380

Scheme 380: PROCEDURE
Scheme 380: PROCEDURE

Scheme 381

Scheme 381
Scheme 381
  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 / All Data / Intake Air. Read the value displayed on the Techstream. OK Same as actual intake air temperature. RESULT Temperature Displayed Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Same as actual intake air temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the mass air flow meter connector. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter) Connect terminals THA and E2 of the mass air flow meter wire harness side 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 / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher 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 B35-1 (THA) - B37-15 (THA) Always Below 1 ohms B35-2 (E2) - B37-7 (ETHA) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the mass air flow meter connector. TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) Reconnect the mass air flow meter connector. NG --> See step 5 OK --> See step 9
  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 B35-1 (THA) or B37-15 (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 OK --> See step 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  7. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421954-S12208818912011092600000)
  8. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-421954-S12208818912011092600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)

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 382

Scheme 382: PROCEDURE
Scheme 382: PROCEDURE

Scheme 383

Scheme 383
Scheme 383
  1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read DTCs. RESULT Display (DTC Output) Proceed to P0115 A P0117 B P0118 C B --> See step 8 C --> See step 3 A: Go to next step
  2. 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. Standard value Between 75°C and 100°C (167°F and 212°F) with warm engine RESULT Temperature Displayed Proceed to -40°C (-40°F) A 140°C (284°F) or higher B 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) or higher. B --> See step 8 C --> See step 5 A: Go to next step
  3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the 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) or higher 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 4 OK --> See step 6
  4. 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 - B38-17 (THW) Always Below 1 ohms B25-1 - B37-8 (ETHW) Always Below 1 ohms Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  6. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421954-S30792072392011092600000)
  7. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  8. 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 9 OK --> See step 10
  9. 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 B38-17 (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 OK --> See step 11
  10. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421954-S30792072392011092600000)
  11. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)

HINT

  1. If DTC P0115, P0117, P0118 or P0125 is stored simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or 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

  1. These DTCs relate to the throttle position sensor.
  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.

Scheme 384

Scheme 384: PROCEDURE
Scheme 384: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION NO. 1 AND 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. Check the values displayed on the Techstream. RESULT When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V ETA circuit open 0 to 0.2 V, or 4.5 to 5.0 V 2.4 to 3.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.4 to 3.4 V (Fail-safe) VTA1 circuit open or ground short 0.7 to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.7 to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or ground short 0.5 to 1.1 V 2.1 to 3.1 V 3.3 to 4.9 V (Not fail-safe) 4.6 to 5.0 V (Not fail-safe) TP sensor circuit normal B 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 Tester Connection Condition Specified Condition B13-5 (VC) - B38-13 (VCTA) Always Below 1 ohms B13-6 (VTA) - B38-15 (VTA1) Always Below 1 ohms B13-4 (VTA2) - B38-16 (VTA2) Always Below 1 ohms B13-3 (E2) - B38-14 (ETA) Always Below 1 ohms B13-5 (VC) or B38-13 (VCTA) - Body ground Always 10 kohms or higher B13-6 (VTA) or B38-15 (VTA1) - Body ground Always 10 kohms or higher B13-4 (VTA2) or B38-16 (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 OK: Go to next step
  3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle body with motor assembly connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 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-421954-S26809158672011092600000) . 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 and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output DTCs. RESULT Display (DTC Output) Proceed to P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 is output A No DTC is output B B --> SYSTEM OK A --> See step 7
  6. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)

HINT

  1. If DTC P0115, P0116, P0117 or P0118 is stored simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or 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

  1. This DTC relates to the thermostat.
  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

Sensor 2 refers to the sensor mounted between the front and rear catalysts.

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, or AFS Voltage B2S1 and O2S B2S2) 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 (A/F)+25%RichBelow 3.1
12.5%LeanHigher than 3.4
AFS Voltage B2S1 (A/F)+25%RichBelow 3.1
12.5%LeanHigher than 3.4
O2S B1S2 (HO2)+25%RichHigher than 0.55
12.5%LeanBelow 0.4
O2S B2S2 (HO2)+25%RichHigher than 0.55
12.5%LeanBelow 0.4

Note. The A/F sensor has an output delay of a few seconds and the HO2 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 385

Scheme 385
Scheme 385

Scheme 386

Scheme 386
Scheme 386

Scheme 387

Scheme 387
Scheme 387

Scheme 388

Scheme 388
Scheme 388
  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 or AFS Voltage B2S1, and O2S B1S2 or O2S B2S2. 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.
  3. If the OX2B wire from the ECM connector is short-circuited to the +B wire, DTC P0158 will be stored.

Scheme 389

Scheme 389: PROCEDURE
Scheme 389: PROCEDURE

Scheme 390

Scheme 390
Scheme 390

Scheme 391

Scheme 391
Scheme 391
  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 Display (DTC Output) Proceed to P0138 or P0158 A P0137 or P0157 B P0136 or P0156 C P0139 or P0159 D P0136, P0137, P0138, P0156, P0157 or P0158 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 or O2S B2S2. 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 (bank 1 sensor 2) or oxygen sensor connector (bank 2 sensor 2). Measure the resistance according to the value(s) in the table below. Standard Resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 3 (OX1B) Always 10 kohms or higher Standard Resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 3 (OX2B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (to Heated Oxygen Sensor Bank 1) *b Component without harness connected (to Heated Oxygen Sensor Bank 2) 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 B39-12 (HT1B) - B36-2 (OX1B) Always 10 kohms or higher B39-13 (HT2B) - B36-4 (OX2B) 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 or AFS Voltage B2S1, and the heated oxygen sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 AFS Voltage B2S1 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 or O2S B2S2) 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-421952-S20670569172011092600000) . 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 and RANGE B2S1 are either PASS or FAIL. If the Techstream shows incomplete, recheck RANGE B1S1 and RANGE B2S1 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 or O2S B2S2. 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 or AFS Voltage B2S1, and the heated oxygen sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 AFS Voltage B2S1 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 or O2S B2S2) 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-421954-S17940809402011092600000) . NG --> See step 24 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector (bank 1 sensor 2) or heated oxygen sensor connector (bank 2 sensor 2). 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 B29-1 (HT1B) - B39-12 (HT1B) Always Below 1 ohms B29-3 (OX1B) - B36-2 (OX1B) Always Below 1 ohms B29-4 (E2) - B36-1 (EX1B) Always Below 1 ohms B30-1 (HT2B) - B39-13 (HT2B) Always Below 1 ohms B30-3 (OX2B) - B36-4 (OX2B) Always Below 1 ohms B30-4 (E2) - B36-3 (EX2B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B29-1 (HT1B) or B39-12 (HT1B) - Body ground Always 10 kohms or higher B29-3 (OX1B) or B36-2 (OX1B) - Body ground Always 10 kohms or higher B29-4 (E2) or B36-1 (EX1B) - Body ground Always 10 kohms or higher B30-1 (HT2B) or B39-13 (HT2B) - Body ground Always 10 kohms or higher B30-3 (OX2B) or B36-4 (OX2B) - Body ground Always 10 kohms or higher B30-4 (E2) or B36-3 (EX2B) - 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-421954-S24008159712011092600000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158 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, P0138, P0156, P0157 and P0158. 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 Display (DTC Output) Proceed to ABNORMAL (P0136, P0137, P0138, P0156, P0157 or P0158 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-421954-S24359359142011092600000) . NEXT: Go to next step
  16. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
  17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158 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, P0138, P0156, P0157 and P0158. 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 Display (DTC Output) Proceed to ABNORMAL (P0136, P0137, P0138, P0156, P0157 or P0158 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 or O2S B2S2. 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 (bank 1 sensor 2) or heated oxygen sensor connector (bank 2 sensor 2). Measure the resistance according to the value(s) in the table below. Standard Resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E2) Always 10 kohms or higher Standard Resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 3 (OX2B) Always 10 kohms or higher 2 (+B) - 4 (E2) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (to Heated Oxygen Sensor Bank 1) *b Component without harness connected (to Heated Oxygen Sensor Bank 2) 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 B39-12 (HT1B) - B36-2 (OX1B) Always 10 kohms or higher B39-13 (HT2B) - B36-4 (OX2B) 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 and P0159). NEXT: Go to next step
  22. CHECK WHETHER DTC OUTPUT RECURS (DTC P0139 OR P0159 IS OUTPUT AGAIN) Read the DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . RESULT Result Proceed to P0139 or P0159 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-421954-S24008159712011092600000)
  24. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421954-S24008159712011092600000)
  25. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421954-S24008159712011092600000)
  26. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  27. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  28. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-421954-S24359359142011092600000)
  29. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421954-S24008159712011092600000)
  30. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  31. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-421954-S24008159712011092600000)
  32. GO TO DTC CHART. Refer to «PROBLEM SYMPTOMS TABLE»(ref-421952-S22152412832011092600000)

HINT

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

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

  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 for A/F Sensor.
  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. 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. 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 (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)

  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 ratio 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; and then press the graph button on the Data List display.

HINT

  1. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  2. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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

HINT

  1. Read freeze frame data using the Techstream. 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. 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.
  3. 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 can be started. If the engine cannot be started, proceed to Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

Scheme 392

Scheme 392: PROCEDURE
Scheme 392: PROCEDURE
  1. CHECK FOR DTC (B1500) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream 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 15 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (FUEL PUMP) Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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 fuel pump using the Techstream. OK Operating sounds can be heard from fuel pump. 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 Tester Connection Condition Specified Condition Q8-1 (FPC) - F51-3 (FPC) Always Below 1 ohms Q8-2 (DI) - F50-26 (DI) Always Below 1 ohms Q8-3 (E) - Body ground Always Below 1 ohms Q8-1 (FPC) or F51-3 (FPC) - Body ground Always 10 kohms or higher Q8-2 (DI) or F50-26 (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-422124-S30933093022011092600000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS Check that there are 17 liters (18 US qts, 15 Imp. qts) 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-421952-S20670569172011092600000) . Crank the engine for 15 seconds. Idle the engine for 1 minute. 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 16 A --> END
  6. INSPECT CIRCUIT OPENING RELAY (C/OPN) Inspect the circuit opening relay (C/OPN). Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-421954-S26564262792011092600000) . NG --> REPLACE CIRCUIT OPENING RELAY (C/OPN) OK: Go to next step
  7. INSPECT CIRCUIT OPENING RELAY (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 (CIRCUIT OPENING RELAY (C/OPN) - ECM, FUEL PUMP ECU) Remove the circuit opening relay (C/OPN) from the engine room relay block. Disconnect the ECM connector. Disconnect the fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Circuit opening relay (C/OPN) terminal 1 - F50-8 (FC) Always Below 1 ohms Circuit opening relay (C/OPN) terminal 3 - Q8-4 (+B) Always Below 1 ohms Circuit opening relay (C/OPN) terminal 1 or F50-8 (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 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 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 - Step 1»(ref-422124-S20481679232011092600000) . NG --> See step 17 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 Tester Connection Condition Specified Condition Q8-1 (FPC) - F51-3 (FPC) Always Below 1 ohms Q8-2 (DI) - F50-26 (DI) Always Below 1 ohms Q8-3 (E) - Body ground Always Below 1 ohms Q8-1 (FPC) or F51-3 (FPC) - Body ground Always 10 kohms or higher Q8-2 (DI) or F50-26 (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-422124-S30933093022011092600000) . NEXT: Go to next step
  13. CHECK WHETHER DTC OUTPUT RECURS Check that there are 17 liters (18 US qts, 15 Imp. qts) 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-421952-S20670569172011092600000) . Crank the engine for 15 seconds. Idle the engine for 1 minute. 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 18 A --> END
  14. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY (C/OPN) - NO. 1 INTEGRATION RELAY) Remove the circuit opening relay (C/OPN) from the engine room relay block. Remove the No. 1 integration relay from the engine room relay block. Disconnect the No. 1 integration relay connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance 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 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 19
  15. GO TO DTC B1500. Refer to «DTC B1500: Fuel Sender Open Detected»(ref-422130-S22165829632011092600000)
  16. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  17. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422124-S40983736172011092600000)
  18. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  19. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-422119-S26633688592011092600000)

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 ECM as freeze frame data.
  4. If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors can be considered to be a possible cause of the problem: There was an insufficient amount of fuel in the tank. Improper fuel was used. The spark plugs have been contaminated.
  5. After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to Cylinder #6 Misfire Count).
  6. Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after finishing repairs.
  7. For 6 and 8 cylinder engines, the ECM intentionally does not store the specific misfiring cylinder DTCs at high engine speeds. If misfires occur only at high engine speeds, only DTC P0300 is stored. In the event of DTC P0300 being output, perform the following operations: Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-421952-S20670569172011092600000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or the DTCs using the Techstream. Repair the cylinders that have a high misfiring rate or are indicated by the DTCs. After finishing repairs, conduct the confirmation driving pattern again in order to verify that DTC P0300 is not stored.
  8. When one of Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-20%, the air-fuel ratio may be Rich (-20% or less) or Lean (+20% or more).
  9. When Coolant Temp in the freeze frame data is below 75°C (167°F), the misfire may have occurred only while warming up the engine.
  10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be stored.

Scheme 393

Scheme 393: PROCEDURE
Scheme 393: PROCEDURE
  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 DTCs. HINT: Write down the DTCs. RESULT Display (DTC Output) Proceed to P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 A P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 and other DTCs B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305 and P0306 are output, troubleshoot those DTCs first. B --> See step 36 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is correctly connected and is not damaged. NG --> See step 37 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 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) Enter the following menus: Powertrain / Engine and ECT / Data List / Cylinder #1 Misfire Count, #2, #3, #4, #5 and #6. Read the values for Cylinder #1 Misfire Count to Cylinder #6 Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform the following procedure: Start the engine and let it idle. Move the shift lever to D. Check Cylinder #1 Misfire Count to Cylinder #6 Misfire Count. If misfire counts are still not displayed, perform the steps below. Drive the vehicle while satisfying the Misfire RPM and Misfire Load values noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedure above. Read Cylinder #1 Misfire Count to Cylinder #6 Misfire Count or the DTCs output on the Techstream. RESULT Misfire Count Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If 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 Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 18 A: Go to next step
  7. INSPECT SPARK PLUG Inspect the spark plug. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422102-S16611351722011092600000) . NG --> See step 38 OK: Go to next step
  8. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422102-S16611351722011092600000) . WARNING: Always disconnect all the injector connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 34 OK: Go to next step
  9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-422094-S35836524322011092600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  10. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR OF MISFIRING CYLINDER) Disconnect the fuel injector assembly connector (of the misfiring cylinder). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 B1-1 - Body ground Ignition switch ON 11 to 14 V No. 2 B2-1 - Body ground Ignition switch ON 11 to 14 V No. 3 B3-1 - Body ground Ignition switch ON 11 to 14 V No. 4 B4-1 - Body ground Ignition switch ON 11 to 14 V No. 5 B5-1 - Body ground Ignition switch ON 11 to 14 V No. 6 B6-1 - 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY (IG2) - FUEL INJECTOR) OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (ECM - FUEL INJECTOR OF MISFIRING CYLINDER) Disconnect the fuel injector assembly connector (of the misfiring cylinder). Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 B1-2 - Body ground Always 10 kohms or higher B1-2 - B39-6 (#10) Always Below 1 ohms No. 2 B2-2 - Body ground Always 10 kohms or higher B2-2 - B39-1 (#20) Always Below 1 ohms No. 3 B3-2 - Body ground Always 10 kohms or higher B3-2 - B39-7 (#30) Always Below 1 ohms No. 4 B4-2 - Body ground Always 10 kohms or higher B4-2 - B39-2 (#40) Always Below 1 ohms No. 5 B5-2 - Body ground Always 10 kohms or higher B5-2 - B39-8 (#50) Always Below 1 ohms No. 6 B6-2 - Body ground Always 10 kohms or higher B6-2 - B39-3 (#60) Always Below 1 ohms Reconnect the fuel injector assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - ECM) OK: Go to next step
  12. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector resistance. Refer to «INSPECTION - Step 1»(ref-422124-S36209080742011092600000) . Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION - Step 2»(ref-422124-S36209080742011092600000) . NG --> See step 39 OK: Go to next step
  13. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422125-S11358849972011092600000) . OK No leakage from air induction system. NG --> See step 40 OK: Go to next step
  14. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422129-S37906946402011092600000) . NG --> REPAIR OR REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER OK: Go to next step
  15. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 42 OK: Go to next step
  16. 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 13.8 g/sec. and 17.3 g/sec. (shift lever: N; A/C: Off). NG --> See step 29 OK: Go to next step
  17. CHECK VALVE TIMING See step 4 OK --> See step 29 NG --> See step 41
  18. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422125-S11358849972011092600000) . OK No leakage from air induction system. NG --> See step 40 OK: Go to next step
  19. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422129-S37906946402011092600000) . NG --> REPAIR OR REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER OK: Go to next step
  20. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 42 OK: Go to next step
  21. 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 13.8 g/sec. and 17.3 g/sec. (shift lever: N; A/C: Off). NG --> See step 29 OK: Go to next step
  22. CHECK VALVE TIMING See step 4 NG --> See step 41 OK: Go to next step
  23. INSPECT SPARK PLUG Inspect the spark plug. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422102-S16611351722011092600000) . NG --> See step 38 OK: Go to next step
  24. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422102-S16611351722011092600000) . WARNING: Always disconnect all the injector connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Spark jumps across electrode gap. NG --> See step 34 OK: Go to next step
  25. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-422094-S35836524322011092600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  26. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR OF MISFIRING CYLINDER) Disconnect the fuel injector assembly connector (of the misfiring cylinder). Measure the voltage according to the value(s) in the table below. Standard Voltage Cylinder Tester Connection Switch Condition Specified Condition No. 1 B1-1 - Body ground Ignition switch ON 11 to 14 V No. 2 B2-1 - Body ground Ignition switch ON 11 to 14 V No. 3 B3-1 - Body ground Ignition switch ON 11 to 14 V No. 4 B4-1 - Body ground Ignition switch ON 11 to 14 V No. 5 B5-1 - Body ground Ignition switch ON 11 to 14 V No. 6 B6-1 - 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 --> REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 1 INTEGRATION RELAY (IG2) - FUEL INJECTOR) OK: Go to next step
  27. CHECK HARNESS AND CONNECTOR (ECM - FUEL INJECTOR OF MISFIRING CYLINDER) Disconnect the fuel injector assembly connector (of the misfiring cylinder). Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 B1-2 - Body ground Always 10 kohms or higher B1-2 - B39-6 (#10) Always Below 1 ohms No. 2 B2-2 - Body ground Always 10 kohms or higher B2-2 - B39-1 (#20) Always Below 1 ohms No. 3 B3-2 - Body ground Always 10 kohms or higher B3-2 - B39-7 (#30) Always Below 1 ohms No. 4 B4-2 - Body ground Always 10 kohms or higher B4-2 - B39-2 (#40) Always Below 1 ohms No. 5 B5-2 - Body ground Always 10 kohms or higher B5-2 - B39-8 (#50) Always Below 1 ohms No. 6 B6-2 - Body ground Always 10 kohms or higher B6-2 - B39-3 (#60) Always Below 1 ohms Reconnect the fuel injector assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - ECM) OK: Go to next step
  28. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the fuel injector resistance. Refer to «INSPECTION - Step 1»(ref-422124-S36209080742011092600000) . Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION - Step 2»(ref-422124-S36209080742011092600000) . NG --> See step 39 OK: Go to next step
  29. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-421949-S41663372572011092600000) . HINT: Repair any problems. NEXT: Go to next step
  30. 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-421952-S20670569172011092600000) . 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, 0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) A NORMAL (No DTC output) B B --> END A: Go to next step
  31. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW - 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 B35-5 (VG) - B37-14 (VG) Always Below 1 ohms B35-4 (E2G) - B37-13 (E2G) Always Below 1 ohms B35-5 (VG) or B37-14 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW - ECM) OK: Go to next step
  32. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-421954-S12208818912011092600000) . HINT: If the results of the inspections performed in steps 16 and 21 indicated no problem, proceed to the next step without replacing the mass air flow meter. NEXT: Go to next step
  33. 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-421952-S20670569172011092600000) . 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, 0304, P0305 or P0306. Check the DTC judgment result. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303, 0304, P0305 or P0306 is output) B B --> See step 43 A --> END
  34. 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 35 OK --> See step 38
  35. 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: 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 connector. 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 43 OK --> See step 44
  36. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-421952-S27905813582011092600000)
  37. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-422126-S29243352132011092600000)
  38. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-421954-S28657318342011092600000)
  39. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-422124-S16126348042011092600000)
  40. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-422104-S40592439742011092600000)
  41. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-422094-S42016673532011092600000)
  42. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-421954-S30792072392011092600000)
  43. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  44. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-421954-S28657318342011092600000)

HINT

  1. DTCs P0327 and P0328 are for the bank 1 knock sensor circuit.
  2. DTCs P0332 and P0333 are for the bank 2 knock sensor circuit.
  3. Read freeze frame data using the Techstream. 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 394

Scheme 394: PROCEDURE
Scheme 394: PROCEDURE

Scheme 395

Scheme 395
Scheme 395
  1. CHECK KNOCK SENSOR Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B37-11 (KNK1) - B37-12 (EKNK) 20°C (68°F) 120 to 280 kohms B37-5 (KNK2) - B37-6 (EKN2) 20°C (68°F) 120 to 280 kohms TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to ECM) Reconnect the ECM connector. NG --> See step 3 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (ECM) Disconnect the Be1 connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B37-11 (KNK1) - B37-12 (EKNK) Ignition switch ON 4.5 to 5.5 V B37-5 (KNK2) - B37-6 (EKN2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) NG --> See step 4 OK --> See step 5
  3. CHECK HARNESS AND CONNECTOR (KNOCK SENSOR - ECM) Disconnect the knock sensor connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition e2-2 - B37-11 (KNK1) Always Below 1 ohms e2-1 - B37-12 (EKNK) Always Below 1 ohms e1-2 - B37-5 (KNK2) Always Below 1 ohms e1-1 - B37-6 (EKN2) Always Below 1 ohms e2-2 or B37-11 (KNK1) - Body ground Always 10 kohms or higher e2-1 or B37-12 (EKNK) - Body ground Always 10 kohms or higher e1-2 or B37-5 (KNK2) - Body ground Always 10 kohms or higher e1-1 or B37-6 (EKN2) - Body ground Always 10 kohms or higher Reconnect the knock sensor connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. REPLACE ECM. Refer to «REMOVAL»(ref-421954-S13588411562011092600000)
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-421952-S26737171072011092600000)
  6. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-421954-S03023696052011092600000)

More articles — Engine Control System (1GR-FE) (Diagnostic Codes (P0010-P0333)