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Engine Control System (Diagnostic Codes (P0010-P0354)): Diagnosis Scion xB II рестайлинг

Testing & Diagnostics 37 illustrations ~12746 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 282

Scheme 282: PROCEDURE
Scheme 282: PROCEDURE

Scheme 283

Scheme 283
Scheme 283
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTC after recording the freeze frame data and DTC. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off. Start the engine and allow the engine to idle. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0010 A No output B B --> See step 4 A: Go to next step
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the camshaft timing oil control valve connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Reconnect the camshaft timing oil control valve connector. NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the camshaft timing oil control valve 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 B22-1 - B33-100 (OC1+) Always Below 1 ohms B22-2 - B33-123 (OC1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B22-1 or B33-100 (OC1+) - Body ground Always 10 kohms or higher B22-2 or B33-123 (OC1-) - Body ground Always 10 kohms or higher Reconnect the camshaft timing oil control valve connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-511385-S15814011642012102600000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

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 will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out 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.

Scheme 284

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Scheme 284: PROCEDURE

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  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) 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. RESULT Result Proceed to P0011 or P0012 A P0011 or P0012 and other DTCs B HINT: If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Turn the A/C switch on. 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 (OCV) using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) NG --> See step 4 OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read Pending DTCs. RESULT Result Proceed to No output A P0011 or P0012 B HINT: DTC P0011 or P0012 is output when foreign objects in engine oil are caught in some parts of the system. These codes will stay output for a short time even after the system returns to normal. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. B --> See step 4 A --> CHECK FOR INTERMITTENT PROBLEMS
  4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover. Refer to «ADJUSTMENT»(ref-511378-S10518348262012102600000) . Turn the crankshaft pulley, and align its groove with the alignment mark "0" of the timing chain cover. Check that the alignment marks of the camshaft timing gears are aligned with the alignment marks of the bearing cap as shown in the illustration. If not, turn the crankshaft 1 revolution (360°), then align the marks as above. OK Alignment marks on camshaft timing gears are aligned as shown in the illustration. TEXT IN ILLUSTRATION *a Alignment Marks *b Groove Reinstall the cylinder head cover. Refer to «ADJUSTMENT»(ref-511378-S10518348262012102600000) . NG --> See step 10 OK: Go to next step
  5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Remove the camshaft timing oil control valve assembly. Refer to «REMOVAL»(ref-511385-S15814011642012102600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Camshaft Timing Oil Control Valve) Apply the positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation. OK Valve moves quickly. TEXT IN ILLUSTRATION *a Component without harness connected (Camshaft Timing Oil Control Valve) *b Valve Moves Reinstall the camshaft timing oil control valve assembly. Refer to «INSTALLATION»(ref-511385-S00726292022012102600000) . NG --> See step 11 OK: Go to next step
  6. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY - Step 43»(ref-511378-S10811279532012102600000) . OK Filter is not clogged. TEXT IN ILLUSTRATION *1 Oil Control Valve Filter Remove the oil control valve filter. Refer to «REASSEMBLY - Step 7»(ref-511378-S17560211602012102600000) . NG --> CLEAN OIL CONTROL VALVE FILTER OK: Go to next step
  7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly. Refer to «REMOVAL»(ref-511378-S02419773832012102600000) . NEXT: Go to next step
  8. 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-511384-S36374632912012102600000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read Pending DTCs. RESULT Result Proceed to No output A P0011 or P0012 B HINT: DTC P0011 or P0012 is output when foreign objects in engine oil are caught in some parts of the system. These codes will stay output for a short time even after the system returns to normal. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. B --> See step 12 A --> END
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
  10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-511378-S21888059342012102600000)
  11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-511385-S15814011642012102600000)
  12. REPLACE ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-511289-S39503723992012102600000)

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. Refer to "Data List / Active Test" [A/F Heater Duty #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) .
  2. Sensor 1 refers to the sensor closest to the engine assembly.
  3. Sensor 2 refers to the sensor farthest away from the engine assembly.
  4. 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.
  5. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-511389-S13577016202012102600000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

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  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the air fuel ratio sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Air Fuel Ratio Sensor) Reconnect the air fuel ratio sensor connector. NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B19-2 (+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 B19-1 (HA1A) - B33-109 (HA1A) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B19-1 (HA1A) or B33-109 (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 OR P0032) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0031 or P0032 B B --> See step 9 A --> See step 8
  5. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - INTEGRATION RELAY) Disconnect the air fuel ratio sensor connector. Remove the integration relay (EFI MAIN relay) from the engine room relay block. Refer to «REMOVAL»(ref-511385-S27389012452012102600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B19-2 (+B) - 1B-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B19-2 (+B) or 1B-4 - 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 6
  6. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-511385-S03018773852012102600000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

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. Refer to "Data List / Active Test" [O2 Heater B1S2 and O2 Heater Curr Val B1S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) .
  4. When the value for the Data List item O2 Heater Curr Val B1S2 is not 0 A, the heater is on.
  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.
  6. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the heated oxygen sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-511389-S13577016202012102600000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 290

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Scheme 290: PROCEDURE

Scheme 291

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  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) 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 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E2) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) Reconnect the heated oxygen sensor connector. NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B23-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Component without harness connected (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 B23-1 (HT1B) - B33-47 (HT1B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B23-1 (HT1B) or B33-47 (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 P0141) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read pending DTCs. RESULT Result Proceed to No output (No pending DTC output) A P0037, P0038 or P0141 B B --> See step 6 A --> See step 9
  5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the integration relay (EFI MAIN relay) from the engine room relay block. Refer to «REMOVAL»(ref-511385-S27389012452012102600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B23-2 (+B) - 1B-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B23-2 (+B) or 1B-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 8
  6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  7. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-511385-S19129975732012102600000)
  8. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)

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.

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 292

Scheme 292: PROCEDURE
Scheme 292: 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 / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P0102 is output A DTC P0103 is output B B --> See step 6 A: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF MASS AIR FLOW METER) Disconnect the mass air flow meter connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B2-3 (+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 (Check for Open) Tester Connection Condition Specified Condition B2-5 (VG) - B33-118 (VG) Always Below 1 ohms B2-4 (E2G) - B33-116 (E2G) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B2-5 (VG) or B33-118 (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, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(ref-511385-S30520712822012102600000) . Inspect the mass air flow meter, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-511385-S32530780892012102600000) . Inspect the function of the mass air flow meter. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Start the engine. Check that the MAF value changes when the engine is raced. OK The reading changes. NG --> See step 10 OK --> See step 11
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION 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 B2-3 (+B) - 1B-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B2-3 (+B) or 1B-4 - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  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 B2-4 (E2G) - Body ground Always Below 1 ohms Reconnect the mass air flow meter connector. NG --> See step 7 OK --> See step 10
  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 B2-4 (E2G) - B33-116 (E2G) 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
  8. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  9. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)
  10. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
  11. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

Scheme 293

Scheme 293: DESCRIPTION
Scheme 293: 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 1above).
  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, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111When either of following conditions are met (2 trip detection logic): In duration between engine warmed up and next engine starts, change in Intake Air Temperature (IAT) sensor output below threshold During engine warming up after cold engine starts, change in IAT sensor output below thresholdMass 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 294

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Scheme 294: PROCEDURE

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  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. OK Same as actual Intake Air Temperature (IAT). RESULT Result Proceed to -40°C (-40°F) A 128°C (262°F) or higher B Same as actual IAT C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 128°C (262°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. Connect terminals 1 (THA) and 2 (E2) of the MAF 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 / Intake Air. Read the value displayed on the Techstream. Standard value 128°C (262°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 B2-1 (THA) - B33-65 (THA) Always Below 1 ohms B2-2 (E2) - B33-88 (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. 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) 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 B2-1 (THA) or B33-65 (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-511384-S28868653262012102600000)
  7. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
  8. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

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 298

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Scheme 298: PROCEDURE

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Scheme 301
Scheme 301
  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. Standard value Between 80°C and 100°C (167°F and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A 135°C (275°F) or higher B Between 80°C and 100°C (176°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 135°C (275°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 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 135°C (275°F) or higher. 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 B3-2 - B33-97 (THW) Always Below 1 ohms B3-1 - B33-96 (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 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) Reconnect the engine coolant temperature sensor connector. NG --> See step 5 OK --> See step 9
  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 B3-2 or B33-97 (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 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  7. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
  8. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

HINT

  1. If any of DTCs P0115, P0117, P0118 or P0125 are stored 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 302

Scheme 302: PROCEDURE
Scheme 302: PROCEDURE

Scheme 303

Scheme 303
Scheme 303
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position No. 2. Read the values displayed on the Techstream. RESULT When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V E2 circuit open 0 to 0.2 V, or 4.5 to 5.0 V 2.1 V to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.6 V to 1.4 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 3.2 to 4.8 V (Not fail-safe) 4.6 to 5.0 V (Not fail-safe) TP sensor circuit normal B HINT: DTC P0121 is stored when the voltages output from VTA1 and VTA2 are not consistent with the characteristics of the sensors. Therefore, check the Freeze Frame Data when this DTC is output. Use the following formula to confirm relative fluctuations in voltage. Features of sensor output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle Position No. 2 If DTC P0121 is output, proceed to "CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)". B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle body 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 B24-5 (VC) - B33-67 (VCTA) Always Below 1 ohms B24-6 (VTA) - B33-115 (VTA1) Always Below 1 ohms B24-4 (VTA2) - B33-114 (VTA2) Always Below 1 ohms B24-3 (E2) - B33-91 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B24-5 (VC) or B33-67 (VCTA) - Body ground Always 10 kohms or higher B24-6 (VTA) or B33-115 (VTA1) - Body ground Always 10 kohms or higher B24-4 (VTA2) or B33-114 (VTA2) - Body ground Always 10 kohms or higher Reconnect the throttle body 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 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 B24-5 (VC) - B24-3 (E2) Ignition switch ON 4.5 to 5.5 V Reconnect the throttle body connector. NG --> See step 6 OK: Go to next step
  4. REPLACE THROTTLE BODY Replace throttle body. Refer to «REMOVAL»(ref-511385-S41241468102012102600000) . 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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 A No output B B --> END A --> See step 7
  6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

HINT

  1. If any of DTCs P0115, P0116, P0117 or P0118 are stored 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 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

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 (A/F) sensor, Heated Oxygen (HO2) 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 in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume.)
  7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

  1. Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 (A/F)+12%RichLess than 3.1 V
12%LeanMore than 3.4 V
O2S B1S2 (HO2)+12%RichMore than 0.55 V
12%LeanLess than 0.4 V

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

Scheme 304

Scheme 304
Scheme 304

Scheme 305

Scheme 305
Scheme 305
  1. Following the Control the Injection Volume procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
  2. To display the graph, Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Data List / AFS Voltage B1S1 and O2S B1S2; 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. 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 306

Scheme 306: PROCEDURE
Scheme 306: PROCEDURE

Scheme 307

Scheme 307
Scheme 307
  1. READ OUTPUT DTC (DTC P0136, P0137, P0138 AND P0139) 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. RESULT Result Proceed to P0138 is output A P0137 is output B P0136 is output C P0139 is output D P0136, P0137 or P0138 and other DTCs are output E B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 27 A: Go to next step
  2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) Reconnect the heated oxygen sensor connector. NG --> See step 23 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch to off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B33-47 (HT1B) - B33-64 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 26
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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 air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in fine gradations within the 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 0.55 V or more. NG --> See step 6 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. 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 air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in fine gradations within the 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. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (Air fuel ratio) Alternates between more and less than 3.3 V OK Remains at more than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or more than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 12 OK --> See step 20
  6. CHECK FOR EXHAUST GAS LEAK Inspect for exhaust gas leaks from the exhaust manifold sub-assembly and exhaust pipes. OK No gas leakage. NG --> See step 21 OK: Go to next step
  7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 22 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B23-1 (HT1B) - B33-47 (HT1B) Always Below 1 ohms B23-3 (OX1B) - B33-64 (OX1B) B23-4 (E2) - B33-87 (EX1B) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B23-1 (HT1B) or B33-47 (HT1B) - Body ground Always 10 kohms or higher B23-3 (OX1B) or B33-64 (OX1B) - Body ground Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-511385-S19129975732012102600000) . NEXT: Go to next step
  10. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) 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 DTCs: P0136, P0137 and P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0136, P0137 or P0138 is output) A NORMAL (DTC is not output) B B --> END A --> See step 25
  12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-511385-S03018773852012102600000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) 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 DTCs: P0136, P0137 and P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0136, P0137 or P0138 is output) B B --> See step 19 A --> END
  15. CHECK FOR EXHAUST GAS LEAK Inspect for exhaust gas leaks from the exhaust manifold sub-assembly and exhaust pipes. OK No gas leakage. NG --> See step 21 OK: Go to next step
  16. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B33-47 (HT1B) - B33-64 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  17. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0139). NEXT: Go to next step
  18. READ DTC OUTPUT (DTC P0139 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 DTCs: P0139. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0139 is output) A NORMAL (DTC is not output) B B --> See step 24 A --> See step 19
  19. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-511385-S19129975732012102600000)
  20. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO. Refer to «INSPECTION PROCEDURE»(ref-511389-S39904011162012102600000)
  21. REPAIR OR REPLACE EXHAUST GAS LEAK POINT. Refer to «COMPONENTS»(ref-511395-S42913461592012102600000)
  22. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-511385-S19129975732012102600000)
  23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-511385-S19129975732012102600000)
  24. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  25. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-511385-S03018773852012102600000)
  26. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  27. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)

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

HINT

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

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 (A/F) sensor, Heated Oxygen (HO2) 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 in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume.)
  7. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

  1. Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1S1 (A/F)+12%RichLess than 3.1 V
12%LeanMore than 3.4 V
O2S B1S2 (HO2)+12%RichMore than 0.55 V
12%LeanLess than 0.4 V

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air-fuel ratio extremely rich or lean)

  1. Following the Control the Injection Volume procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
  2. To display the graph, Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Data List / AFS Voltage B1S1 and O2S B1S2; 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. 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.
  4. A low A/F 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 A/F sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

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

HINT

  1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. 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 is considered to be a possible cause of the problem: There was insufficient fuel in the tank. Improper fuel is used. The spark plugs have been contaminated. The problem requires further diagnosis.
  5. After finishing repairs, check the misfire counts of the cylinders ([Cylinder #1 Misfire Count to Cylinder #4 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. When one of Short FT #1 or Long FT #1 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).
  8. When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfire has occurred only while warming up the engine.
  9. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs detection.

Scheme 308

Scheme 308: PROCEDURE
Scheme 308: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. HINT: Write down indicated DTCs. RESULT Result Proceed to P0300, P0301, P0302, P0303 and/or P0304 A P0300, P0301, P0302, P0303 and/or P0304 and other DTCs B HINT: If any DTCs other than P0300, P0301, P0302, P0303 and P0304 are output, troubleshoot those DTCs first. B --> See step 35 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-511382-S32135958742012102600000) . 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. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Techstream Display Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (PROHIBIT CAT OT F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine 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 either idling or being revved within 3000 rpm. NEXT: Go to next step
  6. READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) (a) Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire Count, #2, #3 and #4. (b) Start the engine and allow the engine to idle. (c) Read each value for Cylinder #1 Misfire Count to #4 displayed on the Techstream. If no misfire counts occur in any cylinders, perform steps (d) and (e) and then check the misfire counts again. (d) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD)" procedures above. (e) Read the Cylinder #1 Misfire Count to #4 or DTCs displayed on the Techstream. RESULT Result Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data's record of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data's record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 17 A: Go to next step
  7. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511379-S33268528002012102600000) . NG --> See step 36 OK: Go to next step
  8. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511379-S33268528002012102600000) . WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Sparks jump across electrode gap. NG --> See step 32 OK: Go to next step
  9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-511378-S29302409912012102600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  10. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30 AND /OR #40 VOLTAGE) Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B33-108 (#10) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-107 (#20) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-106 (#30) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-105 (#40) - B33-45 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector: (to ECM) Reconnect the ECM connector. NG --> See step 43 OK: Go to next step
  11. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION - Step 1»(ref-511393-S01840439762012102600000) . NG --> See step 39 OK: Go to next step
  12. CHECK INTAKE SYSTEM Check the intake system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511394-S02699951012012102600000) . OK No leak from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  13. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . NG --> See step 34 OK: Go to next step
  14. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 41 OK: Go to next step
  15. INSPECT MASS AIR FLOW METER See step 6 NG --> See step 27 OK: Go to next step
  16. CHECK VALVE TIMING See step 4 OK --> See step 27 NG --> See step 40
  17. CHECK INTAKE SYSTEM Check the intake system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511394-S02699951012012102600000) . OK No leak from intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  18. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . NG --> See step 34 OK: Go to next step
  19. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 41 OK: Go to next step
  20. INSPECT MASS AIR FLOW METER See step 6 NG --> See step 27 OK: Go to next step
  21. CHECK VALVE TIMING See step 4 NG --> See step 40 OK: Go to next step
  22. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511379-S33268528002012102600000) . NG --> See step 36 OK: Go to next step
  23. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511379-S33268528002012102600000) . WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. OK Sparks jump across electrode gap. NG --> See step 32 OK: Go to next step
  24. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-511378-S29302409912012102600000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  25. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30 AND/OR #40 VOLTAGE) Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B33-108 (#10) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-107 (#20) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-106 (#30) - B33-45 (E01) Ignition switch ON 11 to 14 V B33-105 (#40) - B33-45 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector: (to ECM) Reconnect the ECM connector. NG --> See step 43 OK: Go to next step
  26. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION - Step 1»(ref-511393-S01840439762012102600000) . NG --> See step 39 OK: Go to next step
  27. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR CONNECTION) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-511289-S39503723992012102600000) . HINT: Repair any problems. NEXT: Go to next step
  28. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, and P0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (P0300, P0301, P0302, P0303, or P0304 outputs) A NORMAL (No DTCs output) B B --> END A: Go to next step
  29. 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 B2-5 (VG) - B33-118 (VG) Always Below 1 ohms B2-4 (E2G) - B33-116 (E2G) Always Below 1 ohms B2-5 (VG) or B33-118 (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
  30. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-511385-S36000517632012102600000) . HINT: If the results of the inspections performed in steps 15 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter. NEXT: Go to next step
  31. CHECK WHETHER DTC OUTPUT RECURS 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-511384-S36374632912012102600000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, and P0304. Check the DTC judgment result. RESULT Result Proceed to NORMAL (No DTCs output) A ABNORMAL (P0300, P0301, P0302, P0303, or P0304 outputs) B B --> See step 37 A --> END
  32. CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER Change the installed spark plug to a spark plug that functions normally. Perform a spark test. WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug into the ignition coil and connect the ignition coil connector. Disconnect the injector connector. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 33 OK --> See step 38
  33. CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER Change the ignition coil to a ignition coil that functions normally. Perform a spark test. WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug into the ignition coil and connect the ignition coil connector. Disconnect the injector connector. 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 42
  34. CHECK FUEL LINE Check the fuel lines for leaks or blockage. OK No leakage or blockage in the fuel line. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 44
  35. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
  36. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
  37. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  38. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
  39. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
  40. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-511378-S21888059342012102600000)
  41. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
  42. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
  43. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)
  44. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)

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 309

Scheme 309: PROCEDURE
Scheme 309: PROCEDURE

Scheme 310

Scheme 310
Scheme 310

Scheme 311

Scheme 311
Scheme 311
  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 value while driving the vehicle. OK The value changes. HINT: Malfunction does not occur Knock Feedback Value changes Malfunctions occur Knock Feedback Value does not change The knock feedback value change can be confirmed by running the engine with a high load, for example, by activating the air conditioning system and racing the engine. NG --> See step 2 OK --> See step 5
  2. INSPECT ECM (KNK1 VOLTAGE) Disconnect the knock sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B29-2 - B29-1 Ignition switch ON 4.5 to 5.5 V Reconnect the knock sensor connector. NG --> See step 4 OK: Go to next step
  3. INSPECT KNOCK SENSOR Remove the knock sensor. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 120 to 280 kohms Reinstall the knock sensor. 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 B29-2 - B33-110 (KNK1) Always Below 1 ohms B29-1 - B33-111 (EKNK) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B29-2 or B33-110 (KNK1) - Body ground Always 10 kohms or higher B29-1 or B33-111 (EKNK) - Body ground Always 10 kohms or higher Reconnect the knock sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  7. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-511385-S15426603692012102600000)

HINT

After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor.

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

HINT

  1. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
  2. Check the engine speed. The engine speed can be checked by using the Techstream. To check, follow the operation 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 engine revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the CKP 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 312

Scheme 312: PROCEDURE
Scheme 312: PROCEDURE

Scheme 313

Scheme 313
Scheme 313
  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 8
  2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor. Refer to «INSPECTION - Step 1»(ref-511385-S02671026762012102600000) . NG --> See step 12 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 B17-1 - B33-122 (NE+) Always Below 1 ohms B17-2 - B33-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B17-1 or B33-122 (NE+) - Body ground Always 10 kohms or higher B17-2 or B33-121 (NE-) - Body ground Always 10 kohms or higher Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
  5. INSPECT CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate does not have any cracks or deformation. NG --> See step 10 OK: Go to next step
  6. REPLACE CRANKSHAFT POSITION SENSOR Replace crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . NEXT: Go to next step
  7. 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-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to No output A P0335 or P0339 B HINT: If the engine does not start, replace the ECM. B --> See step 11 A --> END
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
  9. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION - Step 1»(ref-511385-S31825120472012102600000)
  10. REPLACE CRANKSHAFT POSITION SENSOR PLATE. Refer to «REMOVAL - Step 51»(ref-511378-S35183214942012102600000)
  11. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  12. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-511385-S13750803862012102600000)

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 314

Scheme 314: PROCEDURE
Scheme 314: PROCEDURE

Scheme 315

Scheme 315
Scheme 315
  1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE) Inspect the camshaft position sensor. Refer to «INSPECTION - Step 1»(ref-511385-S13814937682012102600000) . NG --> See step 11 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 B15-1 - B33-99 (G2+) Always Below 1 ohms B15-2 - B33-98 (G2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B15-1 or B33-99 (G2+) - Body ground Always 10 kohms or higher B15-2 or B33-98 (G2-) - 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. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
  4. CHECK VALVE TIMING See step 4 NG --> See step 12 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 10 OK: Go to next step
  6. REPLACE CAMSHAFT POSITION SENSOR NEXT: Go to next step
  7. 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-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to No output (No pending DTC outputs) A P0340 B HINT: If the engine does not start, replace the ECM. B --> See step 8 A --> END
  8. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  9. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION - Step 1»(ref-511385-S41095308212012102600000)
  10. REPLACE CAMSHAFT. Refer to «REMOVAL»(ref-511378-S02419773832012102600000)
  11. REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-511385-S34497447542012102600000)
  12. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-511378-S21888059342012102600000)

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 316

Scheme 316: PROCEDURE
Scheme 316: PROCEDURE

Scheme 317

Scheme 317
Scheme 317

Scheme 318

Scheme 318
Scheme 318
  1. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B25-4 (GND) - Body ground Always Below 1 ohms B26-4 (GND) - Body ground Always Below 1 ohms B27-4 (GND) - Body ground Always Below 1 ohms B28-4 (GND) - Body ground Always Below 1 ohms 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 B25-1 (+B) - B25-4 (GND) Ignition switch ON 11 to 14 V B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V Reconnect the ignition coil connectors. NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil 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 B25-2 (IGF) - B33-81 (IGF1) Always Below 1 ohms B26-2 (IGF) - B33-81 (IGF1) Always Below 1 ohms B27-2 (IGF) - B33-81 (IGF1) Always Below 1 ohms B28-2 (IGF) - B33-81 (IGF1) Always Below 1 ohms Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B25-3 (IGT1) - B33-85 (IGT1) Always Below 1 ohms B26-3 (IGT2) - B33-84 (IGT2) Always Below 1 ohms B27-3 (IGT3) - B33-83 (IGT3) Always Below 1 ohms B28-3 (IGT4) - B33-82 (IGT4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B25-2 (IGF) or B33-81 (IGF1) - Body ground Always 10 kohms or higher B26-2 (IGF) or B33-81 (IGF1) - Body ground Always 10 kohms or higher B27-2 (IGF) or B33-81 (IGF1) - Body ground Always 10 kohms or higher B28-2 (IGF) or B33-81 (IGF1) - Body ground Always 10 kohms or higher Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B25-3 (IGT1) or B33-85 (IGT1) - Body ground Always 10 kohms or higher B26-3 (IGT2) or B33-84 (IGT2) - Body ground Always 10 kohms or higher B27-3 (IGT3) or B33-83 (IGT3) - Body ground Always 10 kohms or higher B28-3 (IGT4) or B33-82 (IGT4) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the ignition coil connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. 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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Shuffle arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders). NOTE: Do not shuffle the connectors. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to Same DTC output A Different ignition coil DTC output B B --> See step 5 A --> See step 6
  4. CHECK HARNESS AND CONNECTOR (IGNITION COIL - INTEGRATION RELAY) Disconnect the ignition coil connectors. Remove the integration relay (IG2 relay) from the engine room relay block. Refer to «REMOVAL»(ref-511385-S27389012452012102600000) . Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B25-1 (+B) - 1A-4 Always Below 1 ohms B26-1 (+B) - 1A-4 Always Below 1 ohms B27-1 (+B) - 1A-4 Always Below 1 ohms B28-1 (+B) - 1A-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B25-1 (+B) or 1A-4 - Body ground Always 10 kohms or higher B26-1 (+B) or 1A-4 - Body ground Always 10 kohms or higher B27-1 (+B) or 1A-4 - Body ground Always 10 kohms or higher B28-1 (+B) or 1A-4 - Body ground Always 10 kohms or higher Reinstall the integration relay. Reconnect the ignition coil connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
  5. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
  7. REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)

More articles — Engine Control System (Diagnostic Codes (P0010-P0354))