Home ReviewsRefund
Home/Toyota/Prius Plug-in/Toyota Prius Plug-in (2012-2014)/Repair manual/Testing & Diagnostics/Engine Control System (Diagnostic Codes ( P0010 - P0300)) (…
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine Control System (Diagnostic Codes ( P0010 - P0300)) (Plug-In): Diagnosis Toyota Prius Plug-in

Testing & Diagnostics 15 illustrations ~12334 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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

  1. 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. Those foreign objects may then be captured 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 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
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0011 or P0012 is output A DTC P0011 or P0012 and other DTCs are output 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 (CONTROL THE VVT LINEAR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: If the result is not acceptable, cool the engine (engine coolant temperature is 50°C (122°F) or less) and perform the Active Test again. Test not possible with park (P) selected during charge control. Move shift lever to N to perform test. If the DTCs are stored after the Active Test, clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . 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 power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . HINT: P0011 is output: Clear the DTC without using the Techstream. P0012 is output: Clear the DTC with using the Techstream. Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0011 or P0012 is output B HINT: 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. B --> See step 7 A --> See step 14
  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly. Refer to «INSPECTION»(ref-553431-S15435274722013051700000) . NG --> See step 10 OK: Go to next step
  5. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY Inspect the camshaft timing gear assembly. Refer to «REMOVAL - Step 26»(ref-553433-S22977802652013051700000) . NG --> See step 13 OK: Go to next step
  6. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY - Step 41»(ref-553433-S31804077582013051700000) . Check that the filter is not clogged. OK Filter is not clogged. NG --> See step 11 OK: Go to next step
  7. ADJUST VALVE TIMING HINT: There are no marks on the cylinder head to match-up for the purpose of checking valve timing. Valve timing can only be inspected by lining up the colored plates on the timing chain with the marks on the pulleys. It may be necessary to remove and reinstall the chain to match-up the alignment marks. Refer to «DISASSEMBLY»(ref-553433-S01924237192013051700000) . TEXT IN ILLUSTRATION *a Top *b Alignment Mark *c No. 1 Cylinder at TDC Compression NEXT: Go to next step
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . HINT: P0011 is output: Clear the DTC without using the Techstream. P0012 is output: Clear the DTC with using the Techstream. Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0011 or P0012 is output B B --> See step 12 A --> END
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-553305-S14271064972013051700000)
  10. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-553431-S03614773002013051700000)
  11. REPLACE OIL CONTROL VALVE FILTER. Refer to «DISASSEMBLY - Step 41»(ref-553433-S31804077582013051700000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  13. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to «REMOVAL»(ref-553433-S39395898102013051700000)
  14. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)

HINT

  1. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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-553305-S02986196612013051700000) .
  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. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  5. Change the fuel injection volume using the Control the Injection Volume for A/F Sensor function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-553435-S10442012582013051700000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 311

Scheme 311: PROCEDURE
Scheme 311: PROCEDURE
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-553431-S16234908302013051700000) . NG --> See step 5 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 power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D24-2 (+B) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - EFI MAIN RELAY) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D24-1 (HA1A) - D28-18 (HA1A) Always Below 1 ohms D24-1 (HA1A) or D28-18 (HA1A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0031, P0032 OR P101D) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0031, P0032 or P101D is output B B --> See step 7 A --> See step 6
  5. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-553431-S07823217142013051700000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)

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-553305-S02986196612013051700000) .
  4. When the values 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. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  6. Change the fuel injection volume using the Control the Injection Volume for A/F Sensor function provided in the Active Test and monitor the heated oxygen sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-553435-S10442012582013051700000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 312

Scheme 312: PROCEDURE
Scheme 312: PROCEDURE
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-553431-S34868422702013051700000) . NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D9-2 (+B) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - EFI MAIN RELAY) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D9-1 (HT1B) - D28-41 (HT1B) Always Below 1 ohms D9-1 (HT1B) or D28-41 (HT1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0037, P0038, P0141 OR P102D) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0037, P0038, P0141 or P102D is output B B --> See step 5 A --> See step 7
  5. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-553431-S31300248292013051700000)
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 313

Scheme 313: PROCEDURE
Scheme 313: PROCEDURE
  1. READ OUTPUT DTC (DTC P0102 OR P0103) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0102 is output A DTC P0103 is output B B --> See step 5 A: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF MASS AIR FLOW METER SUB-ASSEMBLY) Disconnect the mass air flow meter sub-assembly connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D5-3 (+B) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) NG --> See step 7 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-5 (VG) - D28-94 (VG) Always Below 1 ohms D5-4 (E2G) - D28-117 (E2G) Always Below 1 ohms D5-5 (VG) or D28-94 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(ref-553431-S19752045272013051700000) . Inspect the mass air flow meter sub-assembly, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-553431-S41373481642013051700000) . Inspect the function of the mass air flow meter sub-assembly. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / MAF. Check that the MAF value changes when the engine is raced. OK The reading changes. NG --> See step 8 OK --> See step 9
  5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter sub-assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-4 (E2G) - Body ground Always Below 1 ohms NG --> See step 6 OK --> See step 10
  6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-4 (E2G) - D28-117 (E2G) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-3 (+B) - D28-17 (+BVG) Always Below 1 ohms D5-3 (+B) or D28-17 (+BVG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  8. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-553431-S27742479932013051700000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  10. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-553431-S27742479932013051700000)
  11. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 314

Scheme 314: PROCEDURE
Scheme 314: PROCEDURE
  1. READ VALUE USING TECHSTREAM (MAP) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / MAP. Read the MAP value. OK Same value as the actual atmospheric pressure. HINT: Standard atmospheric pressure is 101 kPa(abs) [760 mmHg(abs)]. For every 100 m (328 ft) increase in altitude, pressure drops by 1 kPa (7.5 mmHg). The pressure also varies due to the weather (high atmospheric pressure, low atmospheric pressure). Also, check "Atmosphere Pressure" in the Data List. NG --> See step 2 OK --> See step 7
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF MANIFOLD ABSOLUTE PRESSURE SENSOR) Disconnect the manifold absolute pressure sensor connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D3-3 (VC) - D3-2 (E2) Power switch on (IG) 4.75 to 5.25 V D3-1 (PIM) - D3-2 (E2) Power switch on (IG) 3.0 to 5.0 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Manifold Absolute Pressure Sensor) NG --> See step 5 OK: Go to next step
  3. REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR Replace the manifold absolute pressure sensor. Refer to «REMOVAL»(ref-553426-S14243589372013051700000) . NEXT: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0107 OR P0108) Connect the Techstream to the DLC3. Turn the power switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the diving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0107 or P0108 is output B B --> See step 6 A --> END
  5. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM) Disconnect the manifold absolute pressure 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 D3-3 (VC) - D28-72 (VCPM) Always Below 1 ohms D3-2 (E2) - D28-71 (EPIM) Always Below 1 ohms D3-1 (PIM) - D28-69 (PIM) Always Below 1 ohms D3-3 (VC) or D28-72 (VCPM) - Body ground Always 10 kohms or higher D3-1 (PIM) or D28-69 (PIM) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  6. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)

Scheme 315

Scheme 315: DESCRIPTION
Scheme 315: DESCRIPTION
  1. The intake air temperature sensor, mounted on the mass air flow meter sub-assembly, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
  2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111Either of the following condition is met (2 trip detection logic). The intake air temperature change from the previous trip warm up to the following trip is small. The change in the intake air temperature after engine start is less than the threshold value.Mass air flow meter sub-assembly

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 316

Scheme 316: PROCEDURE
Scheme 316: PROCEDURE

Scheme 317

Scheme 317
Scheme 317
  1. READ VALUE USING TECHSTREAM (INTAKE AIR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Intake Air. Read the value displayed on the Techstream. OK Same as actual intake air temperature. RESULT Result Proceed to -40°C (-40°F) A Higher than 128°C (262°F) B Same as actual intake air temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 128°C (262°F). B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the mass air flow meter sub-assembly connector. Connect terminals 1 (THA) and 2 (E2) of the mass air flow meter sub-assembly connector on the wire harness side. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Intake Air. Read the value displayed on the Techstream. Standard value Higher than 128°C (262°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) - - NG --> See step 3 OK --> See step 7
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-1 (THA) - D28-116 (THA) Always Below 1 ohms D5-2 (E2) - D28-93 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the mass air flow meter sub-assembly connector. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM NG --> See step 5 OK --> See step 9
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) Disconnect the mass air flow meter sub-assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D5-1 (THA) or D28-116 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)
  7. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-553431-S27742479932013051700000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  9. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-553431-S27742479932013051700000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. If DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).

Scheme 318

Scheme 318: PROCEDURE
Scheme 318: PROCEDURE

Scheme 319

Scheme 319
Scheme 319
  1. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 75 and 100°C (167 and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A Higher than 135°C (275°F) B Between 75 and 100°C (167 and 212°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 135°C (275°F). B --> See step 4 C --> See step 6 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect terminals 1 (E2) and 2 (THW) of the engine coolant temperature sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value Higher than 135°C (275°F) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector (to Engine Coolant Temperature Sensor) - - 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 D6-2 (THW) - D28-64 (THW) Always Below 1 ohms D6-1 (E2) - D28-65 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM 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 D6-2 (THW) or D28-64 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)
  7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-553431-S10081364622013051700000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-553431-S10081364622013051700000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)

HINT

  1. If any of DTCs P0115, P0117 or P0118 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.
  3. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

  1. 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. Characteristic Sensor Output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle position No. 2
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 320

Scheme 320: PROCEDURE
Scheme 320: PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle body assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D4-5 (VC) - D28-88 (VCTA) Always Below 1 ohms D4-6 (VTA) - D28-90 (VTA1) Always Below 1 ohms D4-4 (VTA2) - D28-89 (VTA2) Always Below 1 ohms D4-3 (E2) - D28-111 (ETA) Always Below 1 ohms D4-5 (VC) or D28-88 (VCTA) - Body ground Always 10 kohms or higher D4-6 (VTA) or D28-90 (VTA1) - Body ground Always 10 kohms or higher D4-4 (VTA2) or D28-89 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. INSPECT ECM (VC VOLTAGE) Disconnect the throttle body assembly connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D4-5 (VC) - D4-3 (E2) Power switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Throttle Body Assembly) NG --> See step 5 OK: Go to next step
  3. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(ref-553431-S15528202342013051700000) . NEXT: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 are output A DTC is not output B B --> END A --> See step 6
  5. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)

HINT

  1. If any of DTCs P0115, P0117 or P0118 are output simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

  1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume 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. Turn the power switch on (IG).
  3. Turn the Techstream on.
  4. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) .
  5. Start the engine.
  6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
  7. Idle the engine for 5 minutes or more with the park (P) selected.
  8. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / Gas AF Control / AFS Voltage B1S1 and O2S B1S2.
  9. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  10. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream. HINT: The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 12.5%. 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)12.5%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1S2 (Heated oxygen)12.5%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor (sensor 1) Air fuel ratio sensor (sensor 1) heater Air fuel ratio sensor (sensor 1) circuit 3 Heated oxygen sensor (sensor 2) Heated oxygen sensor (sensor 2) heater Heated oxygen sensor (sensor 2) circuit 4 Fuel injector assembly 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 / Gas AF Control / AFS Voltage B1S1 and O2S B1S2; and then press the graph button on the Data List view.

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

HINT

  1. Sensor 1 refers to the sensor closest to the engine assembly.
  2. Sensor 2 refers to the sensor farthest away from the engine assembly.
  3. Read freeze frame data using the Techstream. 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 321

Scheme 321: PROCEDURE
Scheme 321: PROCEDURE

Scheme 322

Scheme 322
Scheme 322
  1. READ OUTPUT DTC (DTC P0136, P0137, P0138 OR P0139) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0138 is output A DTC P0137 is output B DTC P0136 is output C DTC P0139 is output D DTC P0136, P0137 or P0138 and other DTCs are output E HINT: If any DTCs other than P0136, P0137, P0138 or P0139 are output, troubleshoot those DTCs first. B --> See step 8 C --> See step 4 D --> See step 21 E --> See step 34 A: Go to next step
  2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) NG --> See step 30 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the power 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 D28-41 (HT1B) - D28-125 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 33
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / Gas AF Control / O2S B1S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of heated oxygen sensor displayed on the Techstream. HINT: The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 12.5%. 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 8 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / Gas AF Control / AFS Voltage B1S1 and O2S B1S2. 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: The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 12.5%. 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 higher and less than 3.3 V OK Remains at higher than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage (AFS Voltage B1S1) remains at either less or higher than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 16 OK: Go to next step
  6. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. NG --> See step 7 OK --> See step 28
  7. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. NG --> See step 35 OK --> See step 28
  8. 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
  9. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-553431-S34868422702013051700000) . NG --> See step 30 OK: Go to next step
  10. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D9-1 (HT1B) - D28-41 (HT1B) Always Below 1 ohms D9-3 (OX1B) - D28-125 (OX1B) Always Below 1 ohms D9-4 (E2) - D28-102 (O1B-) Always Below 1 ohms D9-1 (HT1B) or D28-41 (HT1B) - Body ground Always 10 kohms or higher D9-3 (OX1B) or D28-125 (OX1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  11. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-553431-S31300248292013051700000) . NEXT: Go to next step
  12. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
  13. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0137) Connect the Techstream to the DLC3. Turn the power switch on (IG). 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 drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0136 or P0137 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  14. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. NG --> See step 15 OK --> See step 32
  15. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. NG --> See step 35 OK --> See step 32
  16. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-553431-S07823217142013051700000) . NEXT: Go to next step
  17. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
  18. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136) Connect the Techstream to the DLC3. Turn the power switch on (IG). 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 drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0136 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  19. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. NG --> See step 20 OK --> See step 30
  20. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. NG --> See step 35 OK --> See step 29
  21. 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
  22. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Turn the power 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 D28-41 (HT1B) - D28-125 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  23. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0139). NEXT: Go to next step
  24. READ OUTPUT DTC (DTC P0139 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the power switch on (IG). 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 31 A: Go to next step
  25. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. NG --> See step 26 OK --> See step 27
  26. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. NG --> See step 35 OK --> See step 27
  27. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-553431-S31300248292013051700000)
  28. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (FUEL INJECTOR ASSEMBLY, FUEL SYSTEM, INTAKE SYSTEM, ETC.). Refer to «DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1)»(ref-553435-S26925324782013051700000)
  29. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-553431-S31300248292013051700000)
  30. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-553431-S31300248292013051700000)
  31. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-553305-S14896367972013051700000)
  32. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-553431-S07823217142013051700000)
  33. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  34. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-553305-S14271064972013051700000)
  35. REPLACE EGR VALVE ASSEMBLY. Refer to «REMOVAL»(ref-553426-S07103638412013051700000)

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

HINT

  1. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  2. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was 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.
  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.

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

HINT

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

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

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 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 higher).
  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 to be stored.

Scheme 323

Scheme 323: PROCEDURE
Scheme 323: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0300, P0301, P0302, P0303 and/or P0304 are output A DTC P0300, P0301, P0302, P0303 and/or P0304 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303 and/or P0304 are output, troubleshoot those DTCs first. B --> See step 37 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-553426-S12385392922013051700000) . OK PCV valve and hose are correctly connected and are not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
  3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Misfire / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (CYLINDER #1 (TO #4) MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Misfire / Cylinder #1 (to #4) Misfire Count. Start the engine and allow the engine to idle. Read each value for Cylinder #1 (to #4) Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform steps [A] and [B], and then check the misfire counts again. Drive the vehicle with the Misfire RPM and Misfire Load noted in the read value using the Techstream (Misfire RPM and Misfire Load) procedures above [A]. Read Cylinder #1 (to #4) Misfire Count or the DTCs displayed on the Techstream [B]. RESULT Misfire Count Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data record of the engine coolant temperature is below 75°C (167°F), it may only be possible to detect the misfire when the engine is cold. B --> See step 18 A: Go to next step
  5. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-553424-S41937506812013051700000) . NG --> See step 38 OK: Go to next step
  6. CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-553424-S41937506812013051700000) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
  7. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 8»(ref-553433-S21182483422013051700000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  8. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Disconnect the ECM connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D28-85 (#10) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-84 (#20) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-83 (#30) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-82 (#40) - D28-109 (E01) Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 45 OK: Go to next step
  9. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-553438-S09714085492013051700000) . NG --> See step 40 OK: Go to next step
  10. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-553439-S25933161592013051700000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  11. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-553434-S00186218912013051700000) . NG --> See step 36 OK: Go to next step
  12. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 41 OK: Go to next step
  13. READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 31 OK: Go to next step
  14. ADJUST VALVE TIMING See step 7 NEXT: Go to next step
  15. CHECK WHETHER DTC OUTPUT RECURS (P0300, P0301, P0302, P0303 OR P0304) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . 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 or P0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P0300, P0301, P0302, P0303 and/or P0304 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  16. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. RESULT Result Proceed to Outside of standard range A Within standard range B B --> See step 31 A: Go to next step
  17. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. RESULT Result Proceed to NG A OK B B --> See step 31 A --> See step 44
  18. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-553439-S25933161592013051700000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  19. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-553434-S00186218912013051700000) . NG --> See step 36 OK: Go to next step
  20. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 41 OK: Go to next step
  21. READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 31 OK: Go to next step
  22. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher. HINT: The A/C switch and all accessory switches should be off. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / Throttle Idle Position and MAP. Confirm that the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while performing the Active Test. HINT: Do not leave the EGR valve open for 10 seconds or more during the Active Test. Be sure to return the EGR valve to step 0 when the Active Test is completed. Do not open the EGR valve 30 steps or more during the Active Test. OK MAP and idling condition change in response to EGR step position when Throttle Idle Position is ON in Data List. Standard - EGR Step Position (Active Test) 0 Steps 0 to 30 Steps Idling condition Steady idling Idling changes from steady to rough idling or engine stalls MAP (Data List) MAP value is 20 to 40 kPa(abs) [150 to 300 mmHg(abs)] (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed HINT: During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in the EGR valve. RESULT Result Proceed to Outside of standard range A Within standard range B B --> See step 24 A: Go to next step
  23. INSPECT EGR VALVE ASSEMBLY Remove the EGR valve assembly. Refer to «REMOVAL»(ref-553426-S07103638412013051700000) . Check if the EGR valve is stuck open. OK EGR valve is tightly closed. NG --> See step 44 OK: Go to next step
  24. INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-553424-S41937506812013051700000) . NG --> See step 38 OK: Go to next step
  25. CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-553424-S41937506812013051700000) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
  26. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 8»(ref-553433-S21182483422013051700000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  27. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Disconnect the ECM connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D28-85 (#10) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-84 (#20) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-83 (#30) - D28-109 (E01) Power switch on (IG) 11 to 14 V D28-82 (#40) - D28-109 (E01) Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 43 OK: Go to next step
  28. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-553438-S09714085492013051700000) . NG --> See step 40 OK: Go to next step
  29. ADJUST VALVE TIMING See step 7 NEXT: Go to next step
  30. CHECK WHETHER DTC OUTPUT RECURS (DTC P0300, P0301, P0302, P0303 OR P0304) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . 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 or P0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P0300, P0301, P0302, P0303 and/or P0304 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  31. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-553290-S25504548052013051700000) . HINT: Repair any problems. NEXT: Go to next step
  32. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . 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 or P0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P0300, P0301, P0302, P0303 and/or P0304 is output) A NORMAL (DTC is not output) B B --> END A: Go to next step
  33. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) See step 3 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  34. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Replace the mass air flow meter sub-assembly. Refer to «REMOVAL»(ref-553431-S27742479932013051700000) . HINT: If the results of the inspections performed in steps 13 and 21 indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly. NEXT: Go to next step
  35. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-553305-S22976237422013051700000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-553290-S22500871302013051700000) . 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 or P0304. Check the DTC judgment result. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0300, P0301, P0302, P0303 and/or P0304 is output) B B --> See step 39 A --> END
  36. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 42
  37. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-553305-S14271064972013051700000)
  38. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-553431-S05920977332013051700000)
  39. REPLACE ECM. Refer to «REMOVAL»(ref-553431-S24148051042013051700000)
  40. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-553438-S38272280762013051700000)
  41. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-553431-S10081364622013051700000)
  42. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-553438-S09520867712013051700000)
  43. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-553432-S08769662122013051700000)
  44. REPLACE EGR VALVE ASSEMBLY. Refer to «REMOVAL»(ref-553426-S07103638412013051700000)
  45. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-553432-S08769662122013051700000)

More articles — Engine Control System (Diagnostic Codes ( P0010 - P0300)) (Plug-In)