Home ReviewsRefund
Home/Toyota/RAV4/Toyota RAV4 IV (2012-2015)/Repair manual/Testing & Diagnostics/Engine Control System (2AR-FE) (P0010-P0351) (Diagnostic Co…
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine Control System (2AR-FE) (P0010-P0351) (Diagnostic Codes): Diagnosis Toyota RAV4 IV

Testing & Diagnostics 51 illustrations ~13792 words

INSPECTION PROCEDURE

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 245

Scheme 245: PROCEDURE
Scheme 245: PROCEDURE
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs after recording the freeze frame data and DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Start the engine and allow the engine to idle. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0010 A No output B B --> See step 6 A: Go to next step
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly.Refer to «INSPECTION»(ref-493433-S42794640502012081000000) . NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the camshaft timing oil control valve connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B61-1 - B30-36 (OC1+) Always Below 1 ohms B61-2 - B30-59 (OC1-) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B61-1 or B30-36 (OC1+) - Body ground Always 10 kohms or higher B61-2 or B30-59 (OC1-) - Body ground Always 10 kohms or higher Reconnect the camshaft timing oil control valve connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  4. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)

HINT

  1. DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC remains stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 246

Scheme 246: PROCEDURE
Scheme 246: PROCEDURE

Scheme 247

Scheme 247
Scheme 247
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0011 or P0012 A P0011 or P0012 and other DTCs B HINT: If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream. Result Techstream Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON) HINT: If the result is not acceptable, cool the engine and perform the Active Test again. Start the engine when the engine coolant temperature is 30°C (86°F) or less. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream when the engine coolant temperature is 50°C (122°F) or less. Result Techstream Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON) 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 DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream.Refer to «CHECK MODE PROCEDURE»(ref-493432-S20362634172012081000000) . Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN. 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-493432-S11365856792012081000000)
  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Remove the cylinder head cover.Refer to «REMOVAL»(ref-493422-S04934045712012081000000) . Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover. Check that the timing marks of the camshaft timing gears are aligned with the timing marks as shown in the illustration. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. Reinstall the cylinder head cover.Refer to «INSTALLATION»(ref-493422-S39074399072012081000000) . 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-493433-S42794640502012081000000) . 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-493422-S08688668812012081000000) . Check that the filter is not clogged. OK Filter is not clogged. Reinstall the oil control valve filter.Refer to «REASSEMBLY»(ref-493422-S03829132082012081000000) . NG --> CLEAN OIL CONTROL VALVE FILTER OK: Go to next step
  8. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly.Refer to «REMOVAL»(ref-493422-S04934045712012081000000) . NEXT: Go to next step
  9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
  10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-493422-S39074399072012081000000)
  11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
  12. 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-493432-S34411502992012081000000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream.Refer to «CHECK MODE PROCEDURE»(ref-493432-S20362634172012081000000) . Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN. Read DTCs. RESULT Result Proceed to No output A P0011 or P0012 B HINT: DTC P0011 or P0012 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes remain stored for a short time even after the system returns to normal. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. B --> See step 13 A --> END
  13. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

  1. If DTC P0013 is output, check the VVT system (for exhaust camshaft) circuit.
  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 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.

Scheme 248

Scheme 248: PROCEDURE
Scheme 248: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream. Result Techstream Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON) HINT: If the result is not acceptable, cool the engine and perform the Active Test again. Start the engine when the engine coolant temperature is 30°C (86°F) or less. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream when the engine coolant temperature is 50°C (122°F) or less. Result Techstream Operation Specified Condition 0% (OFF) Normal engine speed 127% (ON) Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON) NG --> See step 2 OK --> See step 4
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) Inspect the camshaft timing oil control valve assembly.Refer to «INSPECTION»(ref-493433-S42794640502012081000000) . NG --> See step 5 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) Disconnect the camshaft timing oil control valve assembly (for exhaust camshaft) 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 B62-1 - B30-35 (OE1+) Always Below 1 ohms B62-2 - B30-58 (OE1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-1 or B30-35 (OE1+) - Body ground Always 10 kohms or higher B62-2 or B30-58 (OE1-) - Body ground Always 10 kohms or higher Reconnect the camshaft timing oil control valve assembly (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-493433-S42680891732012081000000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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 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.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. 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. 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-493440-S25720518662012081000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 249

Scheme 249: PROCEDURE
Scheme 249: PROCEDURE

Scheme 250

Scheme 250
Scheme 250

Scheme 251

Scheme 251
Scheme 251

Scheme 252

Scheme 252
Scheme 252

Scheme 253

Scheme 253
Scheme 253
  1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the air fuel ratio sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. NG --> See step 7 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B7-2 (+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 B7-1 (HA1A) - B30-18 (HA1A) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B7-1 (HA1A) or B30-18 (HA1A) - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0031, P0032 OR P101D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine. Allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0031, P0032 or P101D B B --> See step 8 A --> See step 9
  5. INSPECT INTEGRATION NO. 1 RELAY (A/F) Remove the integration relay from the engine room No. 1 relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1B-8 Battery voltage not applied to terminals 1B-6 and 1B-7 10 kohms or higher Battery voltage applied to terminals 1B-6 and 1B-7 Below 1 ohms Reinstall the integration relay. NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - INTEGRATION RELAY) Disconnect the air fuel ratio sensor connector. Remove the integration relay (A/F relay) from the engine room No. 1 relay block.Refer to «ON-VEHICLE INSPECTION»(ref-493433-S41909767702012081000000) . Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B7-2 (+B) - 1B-8 Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B7-2 (+B) or 1B-8 - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493433-S13636630482012081000000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  10. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-493439-S03904180642012081000000)

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

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. 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 254

Scheme 254: PROCEDURE
Scheme 254: PROCEDURE

Scheme 255

Scheme 255
Scheme 255

Scheme 256

Scheme 256
Scheme 256

Scheme 257

Scheme 257
Scheme 257
  1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E2) Always 10 kohms or higher Reconnect the heated oxygen sensor connector. NG --> See step 6 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the resistance according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B67-2 (+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) Tester Connection Condition Specified Condition B67-1 (HT1B) - B30-41 (HT1B) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B67-1 (HT1B) or B30-41 (HT1B) - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0037, P0038, P0141 OR P102D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine. Allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0037, P0038, P0141 or P102D B B --> See step 7 A --> See step 8
  5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the integration relay (EFI MAIN relay) from the engine room relay block.Refer to «ON-VEHICLE INSPECTION»(ref-493433-S41909767702012081000000) . Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B67-2 (+B) - 1A-4 Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B67-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493433-S35123086992012081000000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  9. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-493439-S03904180642012081000000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

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 258

Scheme 258: PROCEDURE
Scheme 258: PROCEDURE

Scheme 259

Scheme 259
Scheme 259

Scheme 260

Scheme 260
Scheme 260

Scheme 261

Scheme 261
Scheme 261

Scheme 262

Scheme 262
Scheme 262
  1. READ VALUE USING TECHSTREAM (MASS AIR FLOW RATE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF. Read the values displayed on the Techstream. RESULT Result Proceed to 0.0 g/sec. A 271.0 g/sec. or more B Between 1.0 and 270.0 g/sec.* C HINT: *: The value changes when the throttle valve is open or closed with the engine running. B --> See step 6 C --> See step 8 A: Go to next step
  2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the mass air flow meter connector. 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 B1-3 (+B) - Body ground Ignition switch ON 11 to 14 V Reconnect the mass air flow meter connector. NG --> See step 5 OK: Go to next step
  3. INSPECT MASS AIR FLOW METER Inspect output voltage. Disconnect the mass air flow meter connector. Apply battery voltage across terminals +B and E2G. Connect the positive (+) tester probe to terminal VG, and the negative (-) tester probe to terminal E2G. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 5 (VG) - 4 (E2G) Battery voltage applied across terminal +B and E2G 0.2 to 4.9 V Reconnect the mass air flow meter connector. NG --> See step 9 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B1-5 (VG) - B30-94 (VG) Always Below 1 ohms B1-4 (E2G) - B30-117 (E2G) Standard Resistance (Check for short) Tester Connection Condition Specified Condition B1-5 (VG) or B30-94 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY) Disconnect the mass air flow meter connector. Remove the integration relay (EFI MAIN relay) from the engine room No. 1 relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B1-3 (+B) - 1A-4 Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B1-3 (+B) or 1A-4 - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
  6. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B1-4 (E2G) - Body ground Always Below 1 ohms Reconnect the mass air flow meter connector. NG --> See step 7 OK --> See step 12
  7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B1-5 (VG) - B30-94 (VG) Always Below 1 ohms B1-4 (E2G) - B30-117 (E2G) Standard Resistance (Check for short) Tester Connection Condition Specified Condition B1-5 (VG) or B30-94 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  11. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-493439-S03904180642012081000000)
  12. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
  13. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

Scheme 263

Scheme 263: DESCRIPTION
Scheme 263: DESCRIPTION
  1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
  2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111When either of the following conditions is met (2 trip detection logic): In the duration between when the engine is warmed up and the next engine start, the change in the Intake Air Temperature (IAT) sensor output is below the threshold. While the engine is warming up after a cold engine start, the change in the IAT sensor output is below the threshold.Mass air flow meter

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 264

Scheme 264: PROCEDURE
Scheme 264: PROCEDURE

Scheme 265

Scheme 265
Scheme 265

Scheme 266

Scheme 266
Scheme 266

Scheme 267

Scheme 267
Scheme 267
  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 / All Data / Intake Air. Read the value displayed on the Techstream. OK Same as actual Intake Air Temperature (IAT). RESULT Result Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Same as actual IAT C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. 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 MAF meter wire harness side connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher Reconnect the mass air flow meter connector. NG --> See step 3 OK --> See step 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 B1-1 (THA) - B30-116 (THA) Always Below 1 ohms B1-2 (E2) - B30-93 (ETHA) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  5. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
  6. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  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 / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) Reconnect the mass air flow meter connector. NG --> See step 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 B1-1 (THA) or B30-116 (THA) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493433-S16373475662012081000000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 268

Scheme 268: PROCEDURE
Scheme 268: PROCEDURE

Scheme 269

Scheme 269
Scheme 269

Scheme 270

Scheme 270
Scheme 270

Scheme 271

Scheme 271
Scheme 271
  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 / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 80 and 100°C (167 and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Between 80 and 100°C (176 and 212°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. B --> See step 7 C --> See step 4 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 / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher Reconnect the engine coolant temperature sensor connector. NG --> See step 3 OK --> See step 5
  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 B4-2 - B30-64 (THW) Always Below 1 ohms B4-1 - B30-65 (ETHW) Always Below 1 ohms Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  5. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
  6. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  7. 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 8 OK --> See step 9
  8. 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 B4-2 or B30-64 (THW) - Body ground Always 10 kohms or higher Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
  9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

  1. If DTC P0115, P0117, P0118 or P0125 is output simultaneously with DTC P0116, the ECT sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 272

Scheme 272: PROCEDURE
Scheme 272: PROCEDURE

Scheme 273

Scheme 273
Scheme 273
  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 / ETCS / 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 4.9 V 4.5 to 4.9 V 4.5 to 4.9 V 4.5 to 4.9 V E2 circuit open 0 to 0.2 V, or 4.5 to 4.9 V 2.4 V to 3.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.9 V 2.4 V to 3.4 V (Fail-safe) VTA1 circuit open or ground short 0.7 V to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.9 V 0.7 V to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.9 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 4.9 V (Not fail-safe) TP sensor circuit normal B HINT: DTC P0121 is stored when the VTA1 and VTA2 output voltages are not consistent with the sensor characteristics. Therefore, check the freeze frame data when this DTC is stored. Use the following formula to confirm the relative differences in voltage. Characteristic Sensor Output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle Position No. 2 If DTC P0121 is output, proceed to the "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 B3-5 (VC) - B30-88 (VCTA) Always Below 1 ohms B3-6 (VTA) - B30-90 (VTA1) Always Below 1 ohms B3-4 (VTA2) - B30-89 (VTA2) Always Below 1 ohms B3-3 (E2) - B30-111 (ETA) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B3-5 (VC) or B30-88 (VCTA) - Body ground Always 10 kohms or higher B3-6 (VTA) or B30-90 (VTA1) - Body ground Always 10 kohms or higher B3-4 (VTA2) or B30-89 (VTA2) - Body ground Always 10 kohms or higher Reconnect the throttle body connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle body connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B3-5 (VC) - B3-3 (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 the throttle body.Refer to «REMOVAL»(ref-493433-S25324289982012081000000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine. Allow the engine to idle for 15 seconds or more. 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-493433-S09832564842012081000000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

HINT

  1. If DTC P0115, P0116, P0117 or P0118 is output simultaneously with DTC P0125, the Engine Coolant Temperature (ECT) sensor may have an open or a short circuit. Troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume 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 (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume 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 A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2) 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.
Tester Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (A/F)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (HO2)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

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

Scheme 274

Scheme 274
Scheme 274

Scheme 275

Scheme 275
Scheme 275

Scheme 276

Scheme 276
Scheme 276

Scheme 277

Scheme 277
Scheme 277
  1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; and then press the graph button on the Data List view.

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

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. 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 278

Scheme 278: PROCEDURE
Scheme 278: PROCEDURE

Scheme 279

Scheme 279
Scheme 279

Scheme 280

Scheme 280
Scheme 280

Scheme 281

Scheme 281
Scheme 281

Scheme 282

Scheme 282
Scheme 282
  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 are output E B --> See step 9 C --> See step 7 D --> See step 18 E --> See step 22 A: Go to next step
  2. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / O2S B1 S2. Allow the engine to idle. Read the Heated Oxygen (HO2) sensor output voltage while idling. RESULT Result Proceed to 1.0 V or higher A Below 1.0 V B B --> See step 5 A: Go to next step
  3. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) Reconnect the heated oxygen sensor connector. NG --> See step 23 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes 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 B30-41 (HT1B) - B30-125 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 28
  5. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of the Air Fuel Ratio (A/F) and Heated Oxygen (HO2) sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in 1% graduations within the range. The A/F sensor is displayed as AFS Voltage B1 S1, and the HO2 sensor is displayed as O2S B1 S2 on the Techstream. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1 S1 (A/F) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either below or higher than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 15 OK: Go to next step
  6. INSPECT AIR FUEL RATIO SENSOR HINT: This A/F sensor test is to check the A/F sensor current during fuel-cut. When the sensor is normal, the sensor current indicates below 3.0 mA in this test. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Drive the vehicle according to the drive pattern listed below: Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or higher. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Repeat the step above at least 3 times. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. Confirm that RANGE B1S1 is either PASS or FAIL. If the Techstream shows incomplete, recheck RANGE B1S1 after performing the drive pattern. Select the RANGE B1S1. Read the test value. Standard current Below 3.0 mA HINT: If the Techstream shows incomplete again, accelerate the vehicle and use second gear to decelerate the vehicle. Refer to the Confirmation Driving Pattern. OK --> See step 12 NG --> See step 15
  7. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Start the engine and turn the Techstream ON. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Injection Volume. Change the fuel injection volume using the Techstream, monitoring the voltage output of HO2 sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in 1% graduations within the range. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Standard Fluctuates between 0.4 V or less and 0.5 V or higher. NG --> See step 9 OK: Go to next step
  8. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of the Air Fuel Ratio (A/F) and Heated Oxygen (HO2) sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in 1% graduations within the range. The A/F sensor is displayed as AFS Voltage B1S1, and the HO2 sensor is displayed as O2S B1S2 on the Techstream. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Tester Display (Sensor) Voltage Variation Proceed to AFS Voltage B1 S1 (A/F) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either below or higher than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 15 OK --> CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO AND REPAIR CAUSE (FUEL INJECTOR, FUEL PRESSURE, GAS LEAK FROM SYSTEM, ETC.)
  9. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leak. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  10. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 24 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B67-1 (HT1B) - B30-41 (HT1B) Always Below 1 ohms B67-3 (OX1B) - B30-125 (OX1B) B67-4 (E2) - B30-102 (O1B-) Standard Resistance (Check for short) Tester Connection Condition Specified Condition B67-1 (HT1B) or B30-41 (HT1B) - Body ground Always 10 kohms or higher B67-3 (OX1B) or B30-125 (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
  12. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor.Refer to «REMOVAL»(ref-493433-S35123086992012081000000) . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the Confirmation Driving Pattern. NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check that the DTC MONITOR is NORMAL. If the DTC MONITOR is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using second gear to decelerate the vehicle. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0136, P0137 or P0138 detected) B B --> See step 25 A --> END
  15. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor.Refer to «REMOVAL»(ref-493433-S13636630482012081000000) . NEXT: Go to next step
  16. PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the Confirmation Driving Pattern. NEXT: Go to next step
  17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check that the DTC MONITOR is NORMAL. If the DTC MONITOR is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using second gear to decelerate the vehicle. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0136, P0137 or P0138 detected) B B --> See step 26 A --> END
  18. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leak. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
  19. 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 B30-41 (HT1B) - B30-125 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  20. PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the Confirmation Driving Pattern (P0139). NEXT: Go to next step
  21. READ DTC OUTPUT (DTC P0139 IS OUTPUT AGAIN) Read the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . RESULT Result Proceed to P0139 is output A No DTC is output B B --> See step 27 A --> See step 29
  22. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
  23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493433-S35123086992012081000000)
  24. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493433-S35123086992012081000000)
  25. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493433-S13636630482012081000000)
  26. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493433-S35123086992012081000000)
  27. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  28. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  29. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493433-S35123086992012081000000)

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 (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume 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 A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2) 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.
Tester Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (A/F)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (HO2)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

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

  1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; then press the graph button on the Data List view.

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

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
  3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.
  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. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  3. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the ECM as freeze frame data.
  4. If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors is considered to be a possible cause of the problem: There was insufficient fuel in the tank. Improper fuel was 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, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-20%, the air-fuel ratio may be rich (-20% or less) or lean (+20% or more).
  8. When Coolant Temp in the freeze frame data is below 75°C (167°F), the misfires have 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 283

Scheme 283: PROCEDURE
Scheme 283: PROCEDURE

Scheme 284

Scheme 284
Scheme 284
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. HINT: Write down the output DTCs. RESULT Result Proceed to P0300, P0301, P0302, P0303 and/or P0304 A P0300, P0301, P0302, P0303 and/or P0304 and other DTCs B HINT: If any DTCs other than P0300, P0301, P0302, P0303 and P0304 are output, troubleshoot those DTCs first. B --> See step 39 A: Go to next step
  2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is correctly connected and is not damaged. NG --> See step 40 OK: Go to next step
  3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Tester Display Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (PROHIBIT CAT OT F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and the engine is either idling or being revved within 3000 rpm. NEXT: Go to next step
  6. READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) (a) Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count and Cylinder #4 Misfire Count. (b) Start the engine and allow the engine to idle. (c) Read each value for Cylinder #1 Misfire Count to Cylinder #4 Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform steps (d) and (e) and then check the misfire counts again. (d) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD)" procedures above. (e) Read the Cylinder #1 Misfire Count to Cylinder #4 Misfire Count or DTCs displayed on the Techstream. RESULT 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 records of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 19 A: Go to next step
  7. INSPECT SPARK PLUG Remove the ignition coil and spark plug from the misfiring cylinder. Measure the spark plug electrode gap. Electrode gap for a new spark plug 1.0 to 1.1 mm (0.039 to 0.043 in.) Maximum electrode gap for a used spark plug 1.3 mm (0.051 in.) NOTE: If the electrode gap is more than 1.3 mm (0.051 in.), replace the spark plug. Do not adjust the electrode gap. RECOMMENDED SPARK PLUG Manufacturer Product DENSO made SK16HR11 Check the electrode for carbon deposits. NOTE: If necessary, clean the spark plug. Reinstall the ignition coil and spark plug. NG --> See step 41 OK: Go to next step
  8. CHECK FOR SPARKS AND IGNITION Disconnect the injector connectors to prevent the engine from starting. WARNING: Always disconnect all the injector connectors. Remove the ignition coil from the cylinder head. Install the spark plug onto the ignition coil. Attach the spark plug assembly to the cylinder head. Crank the engine for less than 2 seconds and check the spark. NOTE: Do not crank the engine for more than 2 seconds. OK Sparks jump across electrode gap. Install the ignition coil. Reconnect the injector connectors. NG --> See step 36 OK: Go to next step
  9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder.Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493422-S33675776772012081000000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  10. CHECK FUEL INJECTOR (POWER SOURCE). Refer to «PROCEDURE - Step 1»(ref-493439-S40311898002012081000000) NG --> See step 42 OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM). Refer to «PROCEDURE - Step 3»(ref-493439-S40311898002012081000000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  12. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor).Refer to «INSPECTION - Step 1»(ref-493441-S18363426432012081000000) . NG --> See step 43 OK: Go to next step
  13. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage.Refer to «ON-VEHICLE INSPECTION»(ref-493442-S42628386862012081000000) . OK No leakage from air induction system. NG --> See step 44 OK: Go to next step
  14. CHECK INTAKE AIR CONTROL VALVE (for TCV) Check the intake air control valve for TCV.Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-493442-S03721092742012081000000) . NG --> See step 45 OK: Go to next step
  15. CHECK FUEL PRESSURE Check the fuel pressure.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . NG --> See step 38 OK: Go to next step
  16. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 46 OK: Go to next step
  17. READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 31 OK: Go to next step
  18. CHECK VALVE TIMING See step 5 OK --> See step 31 NG --> See step 47
  19. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage.Refer to «ON-VEHICLE INSPECTION»(ref-493442-S42628386862012081000000) . OK No leakage from air induction system. NG --> See step 44 OK: Go to next step
  20. CHECK INTAKE AIR CONTROL VALVE (for TCV) Check the intake air control valve for TCV.Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-493442-S03721092742012081000000) . NG --> See step 45 OK: Go to next step
  21. CHECK FUEL PRESSURE Check the fuel pressure.Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-493448-S08207024722012081000000) . NG --> See step 38 OK: Go to next step
  22. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 46 OK: Go to next step
  23. READ VALUE USING MASS AIR FLOW METER (MAF) See step 6 NG --> See step 31 OK: Go to next step
  24. CHECK VALVE TIMING See step 5 NG --> See step 47 OK: Go to next step
  25. INSPECT SPARK PLUG Remove the ignition coil and spark plug from the misfiring cylinder. Measure the spark plug electrode gap. Electrode gap for a new spark plug 1.0 to 1.1 mm (0.039 to 0.043 in.) Maximum electrode gap for a used spark plug 1.3 mm (0.051 in.) NOTE: If the electrode gap is more than 1.3 mm (0.051 in.), replace the spark plug. Do not adjust the electrode gap. RECOMMENDED SPARK PLUG Manufacturer Product DENSO made SK16HR11 Check the electrode for carbon deposits. NOTE: If necessary, clean the spark plug. Reinstall the ignition coil and spark plug. NG --> See step 41 OK: Go to next step
  26. CHECK FOR SPARKS AND IGNITION Disconnect the injector connectors to prevent the engine from starting. WARNING: Always disconnect all the injector connectors. Remove the ignition coil from the cylinder head. Install the spark plug onto the ignition coil. Attach the spark plug assembly to the cylinder head. Crank the engine for less than 2 seconds and check the spark. NOTE: Do not crank the engine for more than 2 seconds. OK Sparks jump across electrode gap. Install the ignition coil. Reconnect the injector connectors. NG --> See step 36 OK: Go to next step
  27. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder.Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493422-S33675776772012081000000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
  28. CHECK FUEL INJECTOR (POWER SOURCE). Refer to «PROCEDURE - Step 1»(ref-493439-S40311898002012081000000) NG --> See step 42 OK: Go to next step
  29. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM). Refer to «PROCEDURE - Step 3»(ref-493439-S40311898002012081000000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  30. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor).Refer to «INSPECTION - Step 1»(ref-493441-S18363426432012081000000) . NG --> See step 43 OK: Go to next step
  31. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM.Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-493289-S18206983812012081000000) . HINT: Repair any problems. NEXT: Go to next step
  32. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or P0304. Check the DTC judgment result. RESULT Display (DTC Output) Proceed to ABNORMAL (P0300, P0301, P0302, P0303 or P0304 output) A NORMAL (No DTC output) B B --> END A: Go to next step
  33. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) See step 18 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  34. REPLACE MASS AIR FLOW METER Replace the mass air flow meter assembly.Refer to «REMOVAL»(ref-493433-S16373475662012081000000) . HINT: If the results of the inspections performed in steps 17 and 23 indicated no problem, proceed to the next step without replacing the mass air flow meter assembly. NEXT: Go to next step
  35. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or P0304. Check the DTC judgment result. RESULT Display (DTC Output) Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303 or P0304 output) B B --> See step 48 A --> END
  36. CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER Change the installed spark plug to a spark plug that functions normally. Perform a spark test. WARNING: Always disconnect all the injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug into the ignition coil and connect the ignition coil connector. Disconnect the injector connectors. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 37 OK --> See step 41
  37. CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER Change the ignition coil to an ignition coil that functions normally. Perform a spark test. WARNING: Always disconnect all the injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug into the ignition coil and connect the ignition coil connector. Disconnect the injector connectors. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across electrode gap. NG --> See step 48 OK --> See step 49
  38. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 50
  39. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
  40. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-493428-S24242854822012081000000)
  41. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
  42. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-493439-S30634097582012081000000)
  43. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-493441-S16444464412012081000000)
  44. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-493446-S33488644752012081000000)
  45. REPLACE INTAKE AIR CONTROL VALVE (for TCV). Refer to «REMOVAL»(ref-493446-S33488644752012081000000)
  46. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493433-S42949200312012081000000)
  47. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-493422-S39074399072012081000000)
  48. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  49. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
  50. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-493441-S05028738562012081000000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 285

Scheme 285: PROCEDURE
Scheme 285: PROCEDURE

Scheme 286

Scheme 286
Scheme 286

Scheme 287

Scheme 287
Scheme 287
  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 Malfunctions occur Knock Feedback Value does not change The knock feedback value change can be confirmed by running the engine with a high load, for example, by activating the air conditioning system and racing the engine. NG --> See step 2 OK --> See step 5
  2. INSPECT ECM (KNK1 VOLTAGE) Disconnect the knock sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition R3-2 - R3-1 Ignition switch ON 4.5 to 5.5 V Reconnect the knock sensor connector. NG --> See step 4 OK: Go to next step
  3. INSPECT KNOCK SENSOR Remove the knock sensor. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 120 to 280 kohms Reinstall the knock sensor. NG --> See step 7 OK --> See step 6
  4. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) Disconnect the knock sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition R3-2 - B30-87 (KNK1) Always Below 1 ohms R3-1 - B30-110 (EKNK) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition R3-2 or B30-87 (KNK1) - Body ground Always 10 kohms or higher R3-1 or B30-110 (EKNK) - Body ground Always 10 kohms or higher Reconnect the knock sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493432-S11365856792012081000000)
  6. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)
  7. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-493433-S36020757382012081000000)

HINT

  1. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
  2. Check the engine speed. The engine speed can be checked by using the Techstream. To check, follow the operation below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed. The engine speed may be indicated as zero despite the crankshaft revolving normally. This is caused by a lack of NE signals from the Crankshaft Position (CKP) sensor. Alternatively, the engine speed may be indicated as less than the actual engine speed if the CKP sensor output voltage is insufficient.
  3. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 288

Scheme 288: PROCEDURE
Scheme 288: PROCEDURE

Scheme 289

Scheme 289
Scheme 289
  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 / All Data / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. OK Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains at zero (0), there may be an open or short in the crankshaft position sensor circuit. NG --> See step 2 OK --> See step 8
  2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor.Refer to «INSPECTION - Step 1»(ref-493433-S22955441052012081000000) . 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 B22-1 - B30-74 (NE+) Always Below 1 ohms B22-2 - B30-120 (NE-) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B22-1 or B30-74 (NE+) - Body ground Always 10 kohms or higher B22-2 or B30-120 (NE-) - Body ground Always 10 kohms or higher Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 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 the crankshaft position sensor.Refer to «REMOVAL»(ref-493433-S20981309522012081000000) . 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-493432-S34411502992012081000000) . 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-493432-S11365856792012081000000)
  9. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-493433-S20981309522012081000000)
  10. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493433-S32269829282012081000000)
  11. REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-493422-S08688668812012081000000)
  12. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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 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.
  2. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.

Scheme 290

Scheme 290: PROCEDURE
Scheme 290: PROCEDURE

Scheme 291

Scheme 291
Scheme 291

Scheme 292

Scheme 292
Scheme 292

Scheme 293

Scheme 293
Scheme 293
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0340, P0342 OR P0343) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0340, P0342 or P0343 is output A DTC P0340, P0342 or P0343 and other DTCs are output B HINT: If any DTCs other than P0340, P0342 or P0343 are output, troubleshoot those DTCs first. B --> See step 11 A: Go to next step
  2. INSPECT CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) (POWER SOURCE) Disconnect the camshaft position sensor (for intake camshaft) 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 B63-3 (VC) - Body ground Ignition switch ON 4.5 to 5.0 V Reconnect the camshaft position sensor (for intake camshaft) connector. NG --> See step 10 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (for intake camshaft) 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 B63-1 (VVI+) - B30-76 (G2+) Always Below 1 ohms B63-2 (VVI-) - B30-122 (G2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-1 (VVI+) or B30-76 (G2+) - Body ground Always 10 kohms or higher B63-2 (VVI-) or B30-122 (G2-) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for intake camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR FOR INTAKE CAMSHAFT) Check the camshaft position sensor (for intake camshaft) installation. OK Sensor is installed correctly. NG --> See step 12 OK: Go to next step
  5. INSPECT INTAKE CAMSHAFT (TIMING ROTOR) Check the timing rotor of the intake camshaft. OK Camshaft timing rotor does not have any cracks or deformation. NG --> See step 13 OK: Go to next step
  6. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor.Refer to «REMOVAL»(ref-493433-S27247095732012081000000) . NEXT: Go to next step
  7. CHECK WHETHER DTC OUTPUT RECURS (P0340, P0342 OR P0343) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine and allow the engine to idle for 10 seconds or more. Turn the ignition switch off. Start the engine again and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0340, P0342 or P0343 is output A DTC is not output B HINT: If the engine does not start, replace the ECM. B --> END A: Go to next step
  8. ADJUST VALVE TIMING Adjust the valve timing.Refer to «INSTALLATION»(ref-493422-S39074399072012081000000) . NEXT: Go to next step
  9. CHECK WHETHER DTC OUTPUT RECURS (P0340, P0342 OR P0343) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Start the engine and allow the engine to idle for 10 seconds or more. Turn the ignition switch off. Start the engine again and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0340, P0342 or P0343 is output B HINT: If the engine does not start, replace the ECM. B --> See step 14 A --> END
  10. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (for intake camshaft) 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 B63-3 (VC) - B30-99 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-3 (VC) or B30-99 (VCV1) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for intake camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
  11. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493432-S02175369332012081000000)
  12. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493433-S29171748412012081000000)
  13. REPLACE INTAKE CAMSHAFT. Refer to «REMOVAL»(ref-493422-S04934045712012081000000)
  14. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

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

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 294

Scheme 294: PROCEDURE
Scheme 294: PROCEDURE

Scheme 295

Scheme 295
Scheme 295
  1. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B12-4 (GND) - Body ground Always Below 1 ohms B11-4 (GND) - Body ground Always Below 1 ohms B10-4 (GND) - Body ground Always Below 1 ohms B9-4 (GND) - Body ground Always Below 1 ohms Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B12-1 (+B) - B12-4 (GND) Ignition switch ON 11 to 14 V B11-1 (+B) - B11-4 (GND) Ignition switch ON 11 to 14 V B10-1 (+B) - B10-4 (GND) Ignition switch ON 11 to 14 V B9-1 (+B) - B9-4 (GND) Ignition switch ON 11 to 14 V Reconnect the ignition coil connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for open) Tester Connection Condition Specified Condition B12-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B11-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B10-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B9-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms Standard Resistance (Check for open) Tester Connection Condition Specified Condition B12-3 (IGT1) - B30-108 (IGT1) Always Below 1 ohms B11-3 (IGT2) - B30-107 (IGT2) Always Below 1 ohms B10-3 (IGT3) - B30-106 (IGT3) Always Below 1 ohms B9-3 (IGT4) - B30-105 (IGT4) Always Below 1 ohms Standard Resistance (Check for short) Tester Connection Condition Specified Condition B12-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B11-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B10-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B9-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher Standard Resistance (Check for short) Tester Connection Condition Specified Condition B12-3 (IGT1) or B30-108 (IGT1) - Body ground Always 10 kohms or higher B11-3 (IGT2) or B30-107 (IGT2) - Body ground Always 10 kohms or higher B10-3 (IGT3) or B30-106 (IGT3) - Body ground Always 10 kohms or higher B9-3 (IGT4) or B30-105 (IGT4) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the ignition coil connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs.Refer to «DTC CHECK / CLEAR»(ref-493432-S34411502992012081000000) . Shuffle the arrangement of the ignition coils 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 output A Different ignition coil DTC output B B --> See step 4 A --> See step 5
  4. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-493449-S07580061132012081000000)
  5. REPLACE ECM. Refer to «REMOVAL»(ref-493433-S09832564842012081000000)

More articles — Engine Control System (2AR-FE) (P0010-P0351) (Diagnostic Codes)