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Engine Control System (2AZ-FE) (Diagnostic Codes (P0010 - P0456): Diagnosis Toyota Matrix E140

Testing & Diagnostics 29 illustrations ~11350 words

INSPECTION PROCEDURE

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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

  1. DTC P0011 or P0012 may be set when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set 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. 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.

Scheme 278

Scheme 278: PROCEDURE

Scheme 279

Scheme 279
  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 CAMSHAFT TIMING OIL CONTROL VALVE) Connect the Techstream to the DLC3 Start the engine. Turn the Techstream 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 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, VVT Change Angle #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-427310-S19809003312011101200000) . NG --> See step 5 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . 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 / Trouble Codes / Pending. Read DTCs. Result Result Proceed to No output A P0011 or P0012 B B --> See step 5 A --> See step 4
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)
  5. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover. Refer to «REMOVAL»(ref-427451-S08168292782011101200000) . Turn the crankshaft pulley, and align its groove with the timing 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. Reinstall the cylinder head cover. Refer to «INSTALLATION»(ref-427451-S37366796322011101200000) . NG --> See step 10 OK: Go to next step
  6. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly. Refer to «INSPECTION»(ref-427449-S14515645152011101200000) . NG --> See step 11 OK: Go to next step
  7. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY»(ref-427451-S32654977072011101200000) . OK Filter is not clogged. Reinstall the oil control valve filter. Refer to «REASSEMBLY»(ref-427451-S30241670602011101200000) . NG --> See step 12 OK: Go to next step
  8. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly. Refer to «REMOVAL»(ref-427451-S08168292782011101200000) . NEXT: Go to next step
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-427310-S25966285782011101200000)
  10. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-427451-S30241670602011101200000)
  11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-427449-S08870001622011101200000)
  12. REPLACE OIL CONTROL VALVE FILTER. Refer to «REMOVAL»(ref-427451-S10229419802011101200000)
  13. 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-427310-S22296836352011101200000) . 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 / Trouble Codes / Pending. Read 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 remain set for a short time even after the system returns to normal. These foreign objects may then be captured by the oil filter, thus eliminating the source of the problem. B --> See step 14 A --> END
  14. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  2. 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-427456-S26783051432011101200000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.
  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.

Scheme 280

Scheme 280: PROCEDURE

Scheme 281

Scheme 281
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-427449-S05485265662011101200000) . NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B16-2 (+B) - Body ground Ignition switch ON 11 to 14 V 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 B16-1 (HA1A) - B29-109 (HA1A) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-1 (HA1A) or B29-109 (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 (AIR FUEL RATIO SENSOR - ECM) 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in 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 7 A --> See step 8
  5. INSPECT FUSE (EFI NO. 2 FUSE) Remove the EFI No. 2 fuse 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 EFI No. 2 fuse Always Below 1 ohms Reinstall the EFI No. 2 fuse. NG --> REPLACE FUSE (EFI NO. 2 FUSE) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - ENGINE ROOM RELAY BLOCK)
  6. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-427449-S10458479212011101200000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  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.

Scheme 282

Scheme 282: PROCEDURE

Scheme 283

Scheme 283
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-427449-S08142138272011101200000) . NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage 2WD Tester Connection Switch Condition Specified Condition B32-2 (+B) - Body ground Ignition switch ON 11 to 14 V 4WD Tester Connection Switch Condition Specified Condition E49-1 (+B) - Body ground Ignition switch ON 11 to 14 V 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) 2WD Tester Connection Condition Specified Condition B32-1 (HT1B) - B29-47 (HT1B) Always Below 1 ohms 4WD Tester Connection Condition Specified Condition E49-2 (HT1B) - B29-47 (HT1B) Always Below 1 ohms Standard Resistance (Check for Short) 2WD Tester Connection Condition Specified Condition B32-1 (HT1B) or B29-47 (HT1B) - Body ground Always 10 kohms or higher 4WD Tester Connection Condition Specified Condition E49-2 (HT1B) or B29-47 (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 (HEATED OXYGEN SENSOR - ECM) 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read DTCs. Result Result Proceed to No output A P0037, P0038 or P0141 B B --> See step 7 A --> See step 8
  5. INSPECT FUSE (EFI NO. 1) Remove the EFI No. 1 fuse 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 EFI No. 1 fuse Always Below 1 ohms Reinstall the EFI No. 1 fuse. NG --> REPLACE FUSE (EFI NO. 1 FUSE) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ENGINE ROOM RELAY BLOCK)
  6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-427449-S15283322802011101200000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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, as well as other data from the time the malfunction.

Scheme 284

Scheme 284: PROCEDURE
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to P0102 A P0103 B B --> See step 5 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 Switch Condition Specified Condition B2-3 (+B) - Body ground Ignition switch ON 11 to 14 V Reconnect the mass air flow meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - MASS AIR FLOW METER) 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) - B29-118 (VG) Always Below 1 ohms B2-4 (E2G) - B29-116 (E2G) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B2-5 (VG) or B29-118 (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 (MASS AIR FLOW METER - ECM) OK: Go to next step
  4. INSPECT MASS AIR FLOW METER Perform On-vehicle Inspection. Refer to «ON-VEHICLE INSPECTION»(ref-427449-S01716464122011101200000) . Perform Inspection. Refer to «INSPECTION»(ref-427449-S42146521532011101200000) . Inspect the function of the mass air flow meter. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / MAF. Check that the reading of the mass air flow meter changes when the engine is raced. OK The reading changes. NG --> See step 7 OK --> See step 8
  5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-4 (E2G) - Body ground Always Below 1 ohms Reconnect the mass air flow meter connector. NG --> See step 6 OK --> See step 7
  6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B2-4 (E2G) - B29-116 (E2G) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 8
  7. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-427449-S21274041812011101200000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

Scheme 285

Scheme 285: DESCRIPTION
  1. The intake air temperature sensor, part of the mass air flow meter, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature becomes low, the resistance of the thermistor increases. When the temperature becomes high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
  2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R which is located inside the ECM.
  3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111When either of following conditions is met (2 trip detection logic): In duration between engine warmed up and next engine starts, change in intake air temperature sensor output bellow threshold During engine warming up after cold engine starts, change in intake air temperature sensor output bellow thresholdMass air flow meter

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Scheme 286

Scheme 286: PROCEDURE

Scheme 287

Scheme 287
  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. Result Result Proceed to -40°C (-40°F) A More than 128°C (262°F) B Same as actual intake air temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates more than 128°C (262°F). B --> See step 7 C --> See step 4 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 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 / Intake Air. Read the value displayed on the Techstream. Standard Value More than 128°C (262°F) Reconnect the mass air flow meter connector. NG --> See step 3 OK --> See step 5
  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) - B29-65 (THA) Always Below 1 ohms B2-2 (E2) - B29-88 (ETHA) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (MASS AIR FLOW METER - ECM) OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)
  5. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-427449-S21274041812011101200000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  7. 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 8 OK --> See step 9
  8. 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 B29-65 (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 (MASS AIR FLOW METER - ECM) OK --> See step 10
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-427449-S21274041812011101200000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Scheme 288

Scheme 288: PROCEDURE

Scheme 289

Scheme 289
  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 75°C and 100°C (167°F and 212°F) with a warm engine. Result Result Proceed to -40°C (-40°F) A More than 135°C (275°F) 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 more than 135°C (275°F). B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. 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 More than 135°C (275°F) 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 - B29-97 (THW) Always Below 1 ohms B3-1 - B29-96 (ETHW) Always Below 1 ohms Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / 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 B29-97 (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 (ENGINE COOLANT TEMPERATURE SENSOR - ECM) OK --> See step 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)
  7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-427449-S10731655672011101200000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-427449-S10731655672011101200000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

  1. If any of DTCs P0115, P0117, P0118 or P0125 are set simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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

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.

Scheme 290

Scheme 290: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1 and Throttle Position No. 2. Read the values displayed on the Techstream. Result When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V E2 circuit open 0 to 0.2 V, or 4.5 to 4.98 V 2.1 V to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V VTA2 circuit open or ground short 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.6 to 4.98 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121 is stored when the voltage 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 "step 2 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 B20-5 (VC) - B29-67 (VCTA) Always Below 1 ohms B20-6 (VTA) - B29-115 (VTA1) Always Below 1 ohms B20-4 (VTA2) - B29-114 (VTA2) Always Below 1 ohms B20-3 (E2) - B29-91 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B20-5 (VC) or B29-67 (VCTA) - Body ground Always 10 kohms or higher B20-6 (VTA) or B29-115 (VTA1) - Body ground Always 10 kohms or higher B20-4 (VTA2) or B29-114 (VTA2) - Body ground Always 10 kohms or higher Reconnect the throttle body connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE POSITION SENSOR - ECM) 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 Switch Condition Specified Condition B20-5 (VC) - B20-3 (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-427449-S05448414982011101200000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. 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-427449-S11002530612011101200000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

  1. If any of DTCs P0115, P0116, P0117 or P0118 are set simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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

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 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 (HO2) 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 VolumeStateVoltage
AFS Voltage B1S1 (Air fuel ratio)+25%RichLess than 3.1 V
12.5%LeanMore than 3.4 V
O2S B1S2 (Heated oxygen)+25%RichMore than 0.55 V
12.5%LeanLess than 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 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

Scheme 291

Scheme 291

Scheme 292

Scheme 292

Scheme 293

Scheme 293
  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 / Data List / All Data / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  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.

Scheme 294

Scheme 294: PROCEDURE

Scheme 295

Scheme 295
  1. READ OUTPUT DTC (DTC P0136, P0137, P0138 OR 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 A P0137 B P0136 C P0139 D P0136, P0137 or P0138 and other DTCs E B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 19 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 2WD Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) 4WD Tester Connection Condition Specified Condition 1 (+B) - 3 (E2) Always 10 kohms or higher 1 (+B) - 4 (OX1B) Reconnect the heated oxygen sensor connector. NG --> See step 20 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B29-47 (HT1B) - B29-64 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / All Data / O2S B1S2. Change the fuel injection volume using the Techstream, monitoring the voltage output of the heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The heated oxygen sensor has a maximum output delay of approximately 20 seconds. Standard voltage Fluctuates between 0.4 V or less and 0.55 V or higher. NG --> See step 6 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine and warm it up. Turn the Techstream on. 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% to +12%. The injection volume can be changed in fine gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1, 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 there is almost no response from the air fuel ratio sensor, a malfunction of the air fuel ratio sensor is suspected. Result Techstream Display Voltage Variation Proceed to AFS Voltage B1S1 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 heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either less or more than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 12 OK --> See step 22
  6. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 20 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) 2WD Tester Connection Condition Specified Condition B32-1 (HT1B) - B29-47 (HT1B) Always Below 1 ohms B32-3 (OX1B) - B29-64 (OX1B) B32-4 (E2) - B29-87 (EX1B) 4WD Tester Connection Condition Specified Condition E49-2 (HT1B) - B29-47 (HT1B) Always Below 1 ohms E49-4 (OX1B) - B29-64 (OX1B) E49-3 (E2) - B29-87 (EX1B) Standard Resistance (Check for Short) 2WD Tester Connection Condition Specified Condition B32-1 (HT1B) or B29-47 (HT1B) - Body ground Always 10 kohms or higher B32-3 (OX1B) or B29-64 (OX1B) - Body ground 4WD Tester Connection Condition Specified Condition E49-2 (HT1B) or B29-47 (HT1B) - Body ground Always 10 kohms or higher E49-4 (OX1B) or B29-64 (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-427449-S15283322802011101200000) . NEXT: Go to next step
  10. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern for P0136, P0137 and P0138. NEXT: Go to next step
  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0137) 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 or P0137. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (P0136 or P0137) A NORMAL (No output) B B --> END A --> See step 23
  12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-427449-S10458479212011101200000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern for P0136, P0137 and P0138. NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136) 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. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (P0136) A NORMAL (No output) B B --> END A --> See step 20
  15. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  16. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B29-47 (HT1B) - B29-64 (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 Confirmation Driving Pattern for P0139. NEXT: Go to next step
  18. READ DTC OUTPUT (CHECK WHETHER 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 / Trouble Codes / Pending. Read the DTCs. Result Result Proceed to P0139 A No output B B --> See step 24 A --> See step 20
  19. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-427310-S25966285782011101200000)
  20. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-427449-S15283322802011101200000)
  21. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  22. CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO AND REPAIR CAUSE (FUEL INJECTOR ASSEMBLY, FUEL PRESSURE, GAS LEAK FROM SYSTEM). Refer to «DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1)»(ref-427456-S32194576072011101200000)
  23. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-427449-S10458479212011101200000)
  24. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)

HINT

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

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 VolumeStateVoltage
AFS Voltage B1S1 (Air fuel ratio sensor)+25%RichLess than 3.1 V
12.5%LeanMore than 3.4 V
O2S B1S2 (Heated oxygen sensor)+25%RichMore than 0.55 V
12.5%LeanLess than 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 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 / Data List / All Data / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  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.
  4. Sensor 1 refers to the sensor closest to the engine assembly.
  5. Sensor 2 refers to the sensor farthest away from the engine assembly.

HINT

  1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  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 set 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 occurred while warming up the engine.
  9. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be detected.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Scheme 296

Scheme 296: PROCEDURE
  1. READ VALUE USING TECHSTREAM (KNOCK FEEDBACK VALUE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / All Data / Knock Feedback Value. Read the value while driving the vehicle. OK The value changes. HINT: Malfunction does not occur Knock Feedback Value changes Malfunction occurs 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 B25-2 - B25-1 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 Inspect the knock sensor. Refer to «INSPECTION»(ref-427449-S06768208022011101200000) . 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 B25-2 - B29-110 (KNK1) Always Below 1 ohms B25-1 - B29-111 (EKNK) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B25-2 or B29-110 (KNK1) - Body ground Always 10 kohms or higher B25-1 or B29-111 (EKNK) - Body ground Always 10 kohms or higher Reconnect the knock sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - KNOCK SENSOR) OK --> See step 6
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  7. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-427449-S33335076742011101200000)

HINT

  1. After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor. Installation condition of the camshaft position sensor Installation condition of the camshaft Connection of the camshaft position sensor connector
  2. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
  3. Check the engine speed. The engine speed can be checked 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 rotating normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
  4. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Scheme 297

Scheme 297: PROCEDURE
  1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. OK Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains at zero (0), there may be an open or short in the crankshaft position sensor circuit. NG --> See step 2 OK --> See step 8
  2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-427449-S10766835082011101200000) . NG --> See step 9 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 B14-1 - B29-122 (NE+) Always Below 1 ohms B14-2 - B29-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B14-1 or B29-122 (NE+) - Body ground Always 10 kohms or higher B14-2 or B29-121 (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 (CRANKSHAFT POSITION SENSOR - ECM) 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 10 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 11 OK: Go to next step
  6. REPLACE CRANKSHAFT POSITION SENSOR Replace crankshaft position sensor. Refer to «REMOVAL»(ref-427449-S08190484942011101200000) . 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. 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 12 A --> END
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-427310-S20815739452011101200000)
  9. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-427449-S08190484942011101200000)
  10. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-427449-S14418880342011101200000)
  11. REPLACE CRANKSHAFT POSITION SENSOR PLATE. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

Read freeze frame data using 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.

Scheme 298

Scheme 298: PROCEDURE
  1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE) Inspect the camshaft position sensor. Refer to «INSPECTION»(ref-427449-S14701669372011101200000) . NG --> See step 8 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B12-1 - B29-99 (G2+) Always Below 1 ohms B12-2 - B29-98 (G2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B12-1 or B29-99 (G2+) - Body ground Always 10 kohms or higher B12-2 or B29-98 (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 (CAMSHAFT POSITION SENSOR - ECM) 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 5 NG --> See step 10 OK: Go to next step
  5. INSPECT CAMSHAFT Check the teeth of the camshaft. OK Camshaft teeth do not have any cracks or deformation. NG --> See step 11 OK: Go to next step
  6. REPLACE CAMSHAFT POSITION SENSOR Replace camshaft position sensor. Refer to «REMOVAL»(ref-427449-S05864051032011101200000) . 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-427310-S22296836352011101200000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read DTCs. Result Result Proceed to No output A P0340 B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
  8. REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-427449-S05864051032011101200000)
  9. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-427449-S13881336962011101200000)
  10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-427451-S26889264472011101200000)
  11. REPLACE CAMSHAFT. Refer to «REMOVAL»(ref-427451-S08168292782011101200000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.

Scheme 299

Scheme 299: PROCEDURE

Scheme 300

Scheme 300
  1. INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT) Disconnect the ignition coil assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-4 (GND) - Body ground Always Below 1 ohms B22-4 (GND) - Body ground Always Below 1 ohms B23-4 (GND) - Body ground Always Below 1 ohms B24-4 (GND) - Body ground Always Below 1 ohms Reconnect the ignition coil assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) OK: Go to next step
  2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil assembly connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B21-1 (+B) - B21-4 (GND) Ignition switch ON 11 to 14 V B22-1 (+B) - B22-4 (GND) Ignition switch ON 11 to 14 V B23-1 (+B) - B23-4 (GND) Ignition switch ON 11 to 14 V B24-1 (+B) - B24-4 (GND) Ignition switch ON 11 to 14 V Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the ignition coil assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-2 (IGF) - B29-81 (IGF1) Always Below 1 ohms B22-2 (IGF) - B29-81 (IGF1) Always Below 1 ohms B23-2 (IGF) - B29-81 (IGF1) Always Below 1 ohms B24-2 (IGF) - B29-81 (IGF1) Always Below 1 ohms B21-3 (IGT1) - B29-85 (IGT1) Always Below 1 ohms B22-3 (IGT2) - B29-84 (IGT2) Always Below 1 ohms B23-3 (IGT3) - B29-83 (IGT3) Always Below 1 ohms B24-3 (IGT4) - B29-82 (IGT4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-2 (IGF) or B29-81 (IGF1) - Body ground Always 10 kohms or higher B22-2 (IGF) or B29-81 (IGF1) - Body ground Always 10 kohms or higher B23-2 (IGF) or B29-81 (IGF1) - Body ground Always 10 kohms or higher B24-2 (IGF) or B29-81 (IGF1) - Body ground Always 10 kohms or higher B21-3 (IGT1) or B29-85 (IGT1) - Body ground Always 10 kohms or higher B22-3 (IGT2) or B29-84 (IGT2) - Body ground Always 10 kohms or higher B23-3 (IGT3) or B29-83 (IGT3) - Body ground Always 10 kohms or higher B24-3 (IGT4) or B29-82 (IGT4) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427310-S22296836352011101200000) . Shuffle arrangement of the ignition coil with igniters (among No. 1 to No. 4 cylinders). NOTE: Do not shuffle the connectors. Perform a simulation test. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Result Proceed to Same DTC is output A Different ignition coil DTC is output B B --> See step 5 A --> See step 6
  5. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-427449-S24613217962011101200000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000)

CONDITIONING FOR SENSOR TESTING

HINT

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

Scheme 301

Scheme 301: CONDITIONING FOR SENSOR TESTING
  1. (a) Connect the Techstream to the DLC3.
  2. (b) Start the engine and warm it up with all the accessories switched OFF until the engine coolant temperature stabilizes.
  3. (c) Run the engine at an engine speed of between 2500 RPM and 3000 RPM for at least 3 minutes.
  4. (d) While running the engine at 3000 RPM for 2 seconds and 2000 RPM for 2 seconds, check the waveforms of the air fuel ratio and heated oxygen sensors using the Techstream.

HINT

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

Scheme 302

Scheme 302

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor 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 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 in an idling condition (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 sensor)+25%RichLess than 3.1 V
12.5%LeanMore than 3.4 V
O2S B1S2 (Heated oxygen sensor)+25%RichMore than 0.55 V
12.5%LeanLess than 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 Injector Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 303

Scheme 303
  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 / Data List / All Data / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
  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.

DTC SUMMARY

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P043EReference orifice cloggedP043E, P043F, P2401, P2402 and P2419 present when one of following conditions met during key-off EVAP monitor: Reference orifice clogged Reference orifice high-flow Leak detection pump off malfunction Leak detection pump on malfunction Vent valve on (close) malfunctionCanister pump module (Reference orifice, leak detection pump, vent valve) Connector/wire harness (Canister pump module - ECM) EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ECMWhile ignition switch off2 trip
P043FReference orifice high-flow
P2401Leak detection pump stuck off
P2402Leak detection pump stuck on
P2419Vent valve stuck closed

HINT

The reference orifice is located inside the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P0441Purge VSV (Vacuum Switching Valve) stuck openLeak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure measured at start and at end of leak check. If stabilized pressure higher than [second reference pressure x 0.35], ECM determines that purge VSV stuck open.Purge VSV Connector/wire harness (Purge VSV - ECM) ECM Canister pump module Leak from EVAP systemWhile ignition switch off2 trip
Purge VSV stuck closedAfter EVAP leak check performed, purge VSV turned ON (open), and atmospheric air introduced into EVAP system. Reference pressure measured at start and at end of check. If pressure does not return to near atmospheric pressure, ECM determines that purge VSV stuck closed.Purge VSV Connector/wire harness (Purge VSV - ECM) ECM Canister pump module Leak from EVAP systemWhile ignition switch off2 trip
Purge flowWhile engine running, following conditions successively met: Negative pressure not created in EVAP system when purge VSV turned ON (open) EVAP system pressure change less than 0.4 kPa-g (3.0 mmHg-g) when vent valve turned ON (closed) Atmospheric pressure change before and after purge flow monitor less than 0.1 kPa-g (0.75 mmHg-g)Purge VSV Connector/wire harness (Purge VSV - ECM) Leak from EVAP line (Purge VSV - Intake manifold) ECMWhile engine running2 trip

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P0451Canister pressure sensor noiseSensor output voltage fluctuates frequently within certain time period.Canister pump module Connector/wire harness (Canister pump module - ECM) EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ECMEVAP monitoring (ignition switch off) Engine running2 trip
Canister pressure sensor signal becomes fixed/flatSensor output voltage does not vary within certain time period.Canister pump module Connector/wire harness (Canister pump module - ECM) EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ECMEVAP monitoring (ignition switch off)2 trip
P0452Canister pressure sensor low pressureEVAP pressure less than 42.11 kPa-a (315.83 mmHg-a) for 0.5 seconds.Canister pump module Connector/wire harness (Canister pump module - ECM) EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ECMIgnition switch ON EVAP monitoring (ignition switch off)1 trip
P0453Canister pressure sensor high pressureEVAP pressure more than 123.761 kPa-a (928.208 mmHg-a) for 0.5 seconds.Canister pump module Connector/wire harness (Canister pump module - ECM) EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose) ECMIgnition switch ON EVAP monitoring (ignition switch off)1 trip

HINT

The canister pressure sensor is built into the canister pump module.

Note. When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 304

Scheme 304: PROCEDURE

Scheme 305

Scheme 305

Scheme 306

Scheme 306
  1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Vapor Pressure Pump. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. Result Display (DTC Output) Test Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Less than 45 kPa-a (430 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM A P0453 More than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor ECM B B --> See step 5 C --> See step 4 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B29-71 (PPMP) - Body ground Always 10 ohms or less Wire harness/connector (ECM - Canister pressure sensor) Short in canister pressure sensor circuit A 10 kohms or more Wire harness/connector (ECM - Canister pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 8 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B29-71 (PPMP) - Body ground Always 10 kohms or more Short in canister pressure sensor circuit A 10 ohms or less Short in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. A --> See step 6 B --> See step 7
  4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-427447-S29777279102011101200000)
  5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the voltage and resistance according to the value(s) in the table below. Standard Voltage 2WD Tester Connection Switch Condition Specified Condition L17-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V L17-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V 4WD Tester Connection Switch Condition Specified Condition U1-4 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V U1-3 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V Standard Resistance 2WD Tester Connection Condition Specified Condition L17-2 (SGND) - Body ground Always 100 ohms or less 4WD Tester Connection Condition Specified Condition U1-2 (SGND) - Body ground Always 100 ohms or less Result Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. B --> See step 7 A: Go to next step
  6. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-427455-S14895165742011101200000) for 2WD. Refer to «REMOVAL»(ref-427455-S06584660472011101200000) for 4WD). NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. NEXT --> See step 9
  7. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER - ECM) HINT: If the exhaust tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 9
  8. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-427449-S11002530612011101200000) . NEXT --> See step 9
  9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are displayed on the Techstream, the repair has been successfully completed. NEXT --> END
DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P0455EVAP gross leakLeak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure measured at start and at end of leak check. If stabilized pressure higher than [second reference pressure x 0.35], ECM determines that EVAP system has large leak.Fuel tank cap (loose) Leak from EVAP line (Canister - Fuel tank) Leak from EVAP line (Purge VSV - Canister) Canister pump module Leak from fuel tank Leak from canisterWhile ignition switch OFF2 trip
P0456EVAP small leakLeak detection pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. Reference pressure measured at start and at end of leak check. If stabilized pressure higher than second reference pressure, ECM determines that EVAP system has small leak.Fuel tank cap (loose) Leak from EVAP line (Canister - Fuel tank) Leak from EVAP line (Purge VSV - Canister) Canister pump module Leak from fuel tank Leak from canisterWhile ignition switch OFF2 trip

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .