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Engine Control System (1AR-FE) (Diagnostic Codes (P0010-P0365) & Circuit Tests): Diagnosis Toyota Highlander II рестайлинг

Testing & Diagnostics 31 illustrations ~12470 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.

Scheme 268

Scheme 268: PROCEDURE
Scheme 268: PROCEDURE

Scheme 269

Scheme 269
Scheme 269
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) 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 / 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% Normal engine speed 100% Engine idles roughly or stalls NG --> See step 2 OK --> See step 6
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Remove the camshaft timing oil control valve assembly (for intake camshaft). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve assembly (for intake camshaft). 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 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 B25-1 - B49-28 (OC1+) Always Below 1 ohms B25-2 - B49-22 (OC1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B25-1 or B49-28 (OC1+) - Body ground Always 10 kohms or higher B25-2 or B49-22 (OC1-) - Body ground Always 10 kohms or higher Reconnect the camshaft timing oil control valve assembly (for intake camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  4. REPLACE ECM. Refer to REMOVAL
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT). Refer to REMOVAL
  6. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS

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 set 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 270

Scheme 270
Scheme 270

Scheme 271

Scheme 271
Scheme 271
  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 / 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 10 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) 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 / 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% Normal engine speed 100% Engine idles roughly or stalls NG --> See step 4 OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / 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. These foreign objects may then be captured by the oil filter. B --> See step 4 A --> See step 9
  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Remove the camshaft timing oil control valve assembly (for intake camshaft). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve assembly (for intake camshaft). NG --> See step 12 OK: Go to next step
  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Remove the cylinder head cover, refer to REMOVAL . 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 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 . NG --> See step 11 OK: Go to next step
  6. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY Inspect the camshaft timing gear assembly, refer to INSPECTION - Step 6 . NG --> See step 15 OK: Go to next step
  7. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter, refer to DISASSEMBLY - Step 38 . Check that the filter is not clogged. OK Filter is not clogged. Reinstall the oil control valve filter, refer to REASSEMBLY - Step 19 . NG --> See step 13 OK: Go to next step
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / 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. These foreign objects may then be captured by the oil filter. B --> See step 14 A --> See step 9
  9. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  10. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
  11. ADJUST VALVE TIMING. Refer to REASSEMBLY
  12. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT). Refer to REMOVAL
  13. REPLACE OIL CONTROL VALVE FILTER. Refer to DISASSEMBLY
  14. REPLACE ECM. Refer to REMOVAL
  15. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to REMOVAL

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 running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Scheme 272

Scheme 272: PROCEDURE
Scheme 272: PROCEDURE

Scheme 273

Scheme 273
Scheme 273
  1. PERFORM ACTIVE TEST USING 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 / 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% Normal engine speed 100% Engine idles roughly or stalls NG --> See step 2 OK --> See step 4
  2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) Remove the camshaft timing oil control valve assembly (for exhaust camshaft). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve assembly (for exhaust camshaft). 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 B64-1 - B50-25 (OE1+) Always Below 1 ohms B64-2 - B50-19 (OE1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B64-1 or B50-25 (OE1+) - Body ground Always 10 kohms or higher B64-2 or B50-19 (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 (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) OK --> See step 6
  4. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  5. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT). Refer to REMOVAL
  6. REPLACE ECM. Refer to REMOVAL

HINT

  1. DTC P0014 or P0015 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. 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.

HINT

  1. DTC P0016 or P0017 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. 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 274

Scheme 274: PROCEDURE
Scheme 274: PROCEDURE

Scheme 275

Scheme 275
Scheme 275
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016 AND P0017) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0016 or P0017 is output A DTC P0016 or P0017 and other DTCs are output B HINT: If any DTCs other than P0016 or P0017 are output, troubleshoot those DTCs first. B --> See step 13 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Check the camshaft timing oil control valve assembly for intake camshaft. Enter the following menus: Powertrain / Engine / 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% Normal engine speed 100% Engine idles roughly or stalls Check the camshaft timing oil control valve assembly for exhaust camshaft. Enter the following menus: Powertrain / Engine / 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% Normal engine speed 100% Engine idles roughly or stalls HINT: If the VVT system can be operated using the Active Test, it can be assumed that the VVT system is operating normally. NG --> See step 4 OK: Go to next step
  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017) Connect the Techstream to the DLC 3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to DTC is not output A DTC P0016 or P0017 is output B HINT: DTC P0016 or P0017 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. These foreign objects may then be captured by the oil filter. B --> See step 4 A --> See step 14
  4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT) HINT: Inspect the specified camshaft timing oil control valve assembly (for intake or exhaust camshaft) in accordance with the inspection result of step 2. Remove the camshaft timing oil control valve assembly (for intake or exhaust camshaft). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve assembly (for intake or exhaust camshaft). NG --> See step 12 OK: Go to next step
  5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) See step 5 NG --> See step 16 OK: Go to next step
  6. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (INTAKE OR EXHAUST CAMSHAFT) Inspect the camshaft timing gear assembly (camshaft timing gear assembly for intake or exhaust camshaft), refer to INSPECTION - Step 6 . NG --> See step 15 OK: Go to next step
  7. INSPECT OIL CONTROL VALVE FILTER See step 7 NG --> See step 11 OK: Go to next step
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017) Connect the Techstream to the DLC 3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the pending DTCs. Result Result Proceed to DTC is not output A DTC P0016 or P0017 is output B HINT: DTC P0016 or P0017 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. These foreign objects may then be captured by the oil filter. B --> See step 9 A --> See step 10
  9. REPLACE ECM. Refer to REMOVAL
  10. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  11. REPLACE OIL CONTROL VALVE FILTER. Refer to DISASSEMBLY
  12. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (INTAKE OR EXHAUST CAMSHAFT). Refer to REMOVAL
  13. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
  14. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  15. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to REMOVAL
  16. ADJUST VALVE TIMING. Refer to REASSEMBLY

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

HINT

  1. Read freeze frame data using the Techstream. 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. 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 276

Scheme 276: PROCEDURE
Scheme 276: PROCEDURE

Scheme 277

Scheme 277
Scheme 277
  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 OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B20-2 (+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 B20-1 (HA1A) - B49-29 (HA1A) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B20-1 (HA1A) or B49-29 (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 the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine and allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine / 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 8 A --> See step 10
  5. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY (EFI MAIN NO. 2 RELAY) Inspect the EFI MAIN No. 2 relay, refer to INSPECTION - Step 1 . NG --> See step 9 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - EFI MAIN NO. 2 RELAY) Disconnect the air fuel ratio sensor connector. Remove the engine room junction block assembly from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B20-2 (+B) - 2A-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B20-2 (+B) or 2A-4 - Body ground Always 10 kohms or higher Reconnect the air fuel ratio sensor connector. Reinstall the engine room junction block assembly. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI MAIN NO. 2 RELAY)
  7. REPLACE AIR FUEL RATIO SENSOR. Refer to REMOVAL
  8. REPLACE ECM. Refer to REMOVAL
  9. REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL
  10. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS

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

HINT

  1. Read freeze frame data using the Techstream. 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. 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
  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 5 OK: Go to next step
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition P1-2 (+B) - Body ground Ignition switch ON 11 to 14 V Reconnect the heated oxygen sensor connector. NG --> See step 8 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 P1-1 (HT1B) - B49-23 (HT1B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition P1-1 (HT1B) or B49-23 (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 the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine and allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the Pending DTCs. Result Result Proceed to DTC P0037, P0038, P0141 or P102D is output A DTC is not output B B --> See step 7 A --> See step 6
  5. REPLACE HEATED OXYGEN SENSOR. Refer to REMOVAL
  6. REPLACE ECM. Refer to REMOVAL
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  8. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY (EFI MAIN NO. 2 RELAY) Inspect the EFI MAIN No. 2 relay, refer to INSPECTION - Step 1 . NG --> See step 10 OK: Go to next step
  9. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - EFI MAIN NO. 2 RELAY) Disconnect the heated oxygen sensor connector. Remove the engine room junction block assembly from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition P1-2 (+B) - 2A-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition P1-2 (+B) or 2A-4 - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reinstall the engine room junction block assembly. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI MAIN NO. 2 RELAY)
  10. REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY. Refer to REMOVAL

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.

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.

Scheme 280

Scheme 280: PROCEDURE
Scheme 280: PROCEDURE
  1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Wait 30 seconds, and 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. 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 B10-3 (+B) - Body ground Ignition switch ON 11 to 14 V Reconnect the mass air flow meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI RELAY - MASS AIR FLOW METER) OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-5 (VG) - B50-11 (VG) Always Below 1 ohms B10-4 (E2G) - B50-5 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B10-5 (VG) or B50-11 (VG) - Body ground Always 10 kohms or higher Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT MASS AIR FLOW METER Perform On-vehicle Inspection, refer to ON-VEHICLE INSPECTION . Perform Inspection, refer to INSPECTION . Inspect the function of the mass air flow meter. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine / Data List / All Data / MAF. Check that the reading of the mass air flow meter changes when the engine is raced. OK The reading changes. NG --> See step 7 OK --> See step 8
  5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-4 (E2G) - Body ground Always Below 1 ohms Reconnect the mass air flow meter connector. NG --> See step 6 OK --> See step 9
  6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-4 (E2G) - B50-5 (E2G) Always Below 1 ohms Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  7. REPLACE MASS AIR FLOW METER. Refer to REMOVAL
  8. REPLACE ECM. Refer to REMOVAL
  9. REPLACE MASS AIR FLOW METER. Refer to REMOVAL

Scheme 281

Scheme 281: DESCRIPTION
Scheme 281: DESCRIPTION
  1. The intake air temperature sensor, mounted on the mass air flow meter, monitors the intake air temperature. The intake air temperature sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the intake air temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
  2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
  3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, according to changes in the intake air temperature, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.
DTC No.DTC Detection ConditionTrouble Area
P0111When either of the following conditions is met (2 trip detection logic): In the time period between warmed-up engine being stopped and the next engine start, change in intake air temperature sensor below threshold. While the engine is warming up after a cold engine start, the change in the intake air temperature sensor output below the threshold.Mass air flow meter

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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 282

Scheme 282: PROCEDURE
Scheme 282: PROCEDURE

Scheme 283

Scheme 283
Scheme 283
  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 / Data List / All Data / 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 °C (284°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 140°C (284°F). B --> See step 7 C --> See step 4 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the mass air flow meter connector. Connect terminals 1 (THA) and 2 (E2) of the mass air flow meter wire harness side connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) Reconnect the mass air flow meter connector. NG --> See step 3 OK --> See step 5
  3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-1 (THA) - B50-6 (THA) Always Below 1 ohms B10-2 (E2) - B50-12 (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
  5. REPLACE MASS AIR FLOW METER. Refer to REMOVAL
  6. REPLACE ECM. Refer to REMOVAL
  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 / Data List / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) Reconnect the mass air flow meter connector. NG --> See step 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 (Check for Short) Tester Connection Condition Specified Condition B10-1 (THA) or B50-6 (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
  10. REPLACE ECM. Refer to REMOVAL

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 284

Scheme 284: PROCEDURE
Scheme 284: PROCEDURE

Scheme 285

Scheme 285
Scheme 285
  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 / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. OK Between 75 and 100°C (167 and 212°F) with warm engine. Result Result Proceed to -40°C (-40°F) A 140°C (284°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 140°C (284°F). B --> See step 7 C --> See step 4 A: Go to next step
  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the 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 / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) 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 (Check for Open) Tester Connection Condition Specified Condition B53-2 - B51-18 (THW) Always Below 1 ohms B53-1 - B51-17 (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
  5. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to REMOVAL
  6. REPLACE ECM. Refer to REMOVAL
  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 / 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 (Check for Short) Tester Connection Condition Specified Condition B53-2 or B51-18 (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
  10. REPLACE ECM. Refer to REMOVAL

HINT

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

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 286

Scheme 286: PROCEDURE
Scheme 286: PROCEDURE
  1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V E2 circuit open 0 to 0.2 V, or 4.5 to 5.0 V 2.1 V to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.6 V to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or ground short 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.6 to 5.0 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121 is stored when the voltages output from VTA1 and VTA2 are not consistent with the characteristics of the sensors. Therefore, check the Freeze Frame Data when this DTC is output. Use the following formula to confirm relative fluctuations in voltage. Features of sensor output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle position No. 2 If DTC P0121 is output, proceed to 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 B27-5 (VC) - B51-11 (VCTA) Always Below 1 ohms B27-6 (VTA) - B51-9 (VTA1) Always Below 1 ohms B27-4 (VTA2) - B51-10 (VTA2) Always Below 1 ohms B27-3 (E2) - B51-5 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B27-5 (VC) or B51-11 (VCTA) - Body ground Always 10 kohms or higher B27-6 (VTA) or B51-9 (VTA1) - Body ground Always 10 kohms or higher B27-4 (VTA2) or B51-10 (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 B27-5 (VC) - B27-3 (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 . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Start the engine. Allow the engine to idle for 15 seconds or more. Enter the following menus: Powertrain / Engine / 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 7
  6. REPLACE ECM. Refer to REMOVAL
  7. REPLACE ECM. Refer to REMOVAL

HINT

  1. If any of DTCs P0115, P0116, 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

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

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

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

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage 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.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (Air fuel ratio)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (Heated oxygen)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

Case Air Fuel Ratio Sensor (Bank 1 Sensor 1) Output Voltage Heated Oxygen Sensor (Bank 1 Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 287

Scheme 287
Scheme 287

Scheme 288

Scheme 288
Scheme 288

Scheme 289

Scheme 289
Scheme 289

Scheme 290

Scheme 290
Scheme 290
  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 / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1 S1 and O2S B1 S2; 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. 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. 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 291

Scheme 291: PROCEDURE
Scheme 291: PROCEDURE

Scheme 292

Scheme 292
Scheme 292
  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 / 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 P0136, P0137 or P0138 and other DTCs are output E B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 19 A: Go to next step
  2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance 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 20 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B49-23 (HT1B) - B49-2 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
  4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / O2S B1S2. After warming up the engine, run the engine at an engine speed of 2500 RPM for 3 minutes. Change the fuel injection volume using the Techstream, and monitor the voltage output of the air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine graduations within this range. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. Standard Fluctuates between 0.4 V or less and 0.55 V or more. NG --> See step 6 OK: Go to next step
  5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of the air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine graduations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1 S1, and the heated oxygen sensor is displayed as O2S B1 S2 on the Techstream. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. Result Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1 S1 (Air fuel ratio) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either below or higher than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 12 OK --> See step 22
  6. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 20 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition P1-1 (HT1B) - B49-23 (HT1B) Always Below 1 ohms P1-3 (OX1B) - B49-2 (OX1B) Always Below 1 ohms P1-4 (E2) - B49-8 (O1B-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition P1-1 (HT1B) or B49-23 (HT1B) - Body ground Always 10 kohms or higher P1-3 (OX1B) or B49-2 (OX1B) - Body ground Always 10 kohms or higher P1-4 (E2) - B49-8 (O1B-) - 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
  9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor, refer to REMOVAL . NEXT: Go to next step
  10. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137, P0138). NEXT: Go to next step
  11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check if the STATUS is NORMAL. If STATUS is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (P0136, P0137 or P0138 is output) A NORMAL (No DTC output) B B --> END A --> See step 23
  12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor, refer to REMOVAL . NEXT: Go to next step
  13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0138). NEXT: Go to next step
  14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0138 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0136 or P0138. Check if the STATUS is NORMAL. If STATUS is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (P0136 or P0138 is output) A NORMAL (No DTC output) B B --> END A --> See step 20
  15. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
  16. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B49-23 (HT1B) - B49-2 (OX1B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  17. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0139). NEXT: Go to next step
  18. READ DTC OUTPUT (DTC P0139 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0139. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (P0139 is output) A NORMAL (No DTC output) B B --> See step 24 A --> See step 20
  19. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
  20. REPLACE HEATED OXYGEN SENSOR. Refer to REMOVAL
  21. REPLACE ECM. Refer to REMOVAL
  22. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO. Refer to INSPECTION PROCEDURE
  23. REPLACE AIR FUEL RATIO SENSOR. Refer to REMOVAL
  24. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS

HINT

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

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

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage 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.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (Air fuel ratio)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (Heated oxygen)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

Case Air Fuel Ratio Sensor (Bank 1 Sensor 1) Output Voltage Heated Oxygen Sensor (Bank 1 Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1 S1 and O2S B1 S2; 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. 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. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  3. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  4. Sensor 1 refers to the sensor closest to the engine assembly.
  5. Sensor 2 refers to the sensor farthest away from the engine assembly.

HINT

  1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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 or Long FT #1 in the freeze frame data is outside the range of +/-20%, the air fuel ratio may be rich (-20% or less) or lean (+20% or more).
  8. When 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.

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 293

Scheme 293: PROCEDURE
Scheme 293: PROCEDURE

Scheme 294

Scheme 294
Scheme 294
  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 / Data List / 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 d3-2 - d3-1 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 d3-2 - B51-12 (KNK1) Always Below 1 ohms d3-1 - B51-6 (EKNK) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition d3-2 or B51-12 (KNK1) - 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
  6. REPLACE ECM. Refer to REMOVAL
  7. REPLACE KNOCK SENSOR. Refer to REMOVAL

HINT

  1. After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the camshaft position sensor. Installation condition of the camshaft position sensor Installation condition of the camshaft Connection of the camshaft position sensor connector
  2. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
  3. Check the engine speed. The engine speed can be checked by using the Techstream. To check, follow the procedure below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 sensor. Alternatively, the engine speed may be indicated as less than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
  4. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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 295

Scheme 295: PROCEDURE
Scheme 295: PROCEDURE
  1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 . 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 B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (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 CRANK ANGLE SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the crank angle sensor plate. OK Crank angle 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 . NEXT: Go to next step
  7. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Start the engine. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0335 or P0339 is output B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> REPAIR COMPLETED
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
  9. REPLACE CRANKSHAFT POSITION SENSOR. Refer to REMOVAL
  10. SECURELY REINSTALL SENSOR. Refer to INSTALLATION
  11. REPLACE CRANKSHAFT. Refer to REMOVAL
  12. REPLACE ECM. Refer to REMOVAL

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

Scheme 296

Scheme 296: PROCEDURE
Scheme 296: PROCEDURE

Scheme 297

Scheme 297
Scheme 297
  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 / 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 10 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 5.5 V Reconnect the camshaft position sensor (for intake camshaft) connector. NG --> See step 9 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+) - B49-17 (G2+) Always Below 1 ohms B63-2 (VVI-) - B49-5 (G2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-1 (VVI+) or B49-17 (G2+) - Body ground Always 10 kohms or higher B63-2 (VVI-) or B49-5 (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 11 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 12 OK: Go to next step
  6. CHECK VALVE TIMING Check the valve timing See step 5 . NG --> See step 14 OK: Go to next step
  7. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor, refer to REMOVAL . NEXT: Go to next step
  8. 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 the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Start the engine and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the pending 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 --> REPAIR COMPLETED A --> See step 13
  9. 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) - B49-11 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-3 (VC) or B49-11 (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 13
  10. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
  11. SECURELY REINSTALL SENSOR. Refer to INSTALLATION
  12. REPLACE INTAKE CAMSHAFT. Refer to REMOVAL
  13. REPLACE ECM. Refer to REMOVAL
  14. ADJUST VALVE TIMING. Refer to REMOVAL

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

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

Scheme 298

Scheme 298: PROCEDURE
Scheme 298: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0365, P0367 OR P0368) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0365, P0367 or P0368 is output A DTC P0365, P0367 or P0368 and other DTCs are output B HINT: If any DTCs other than P0365, P0367 or P0368 are output, troubleshoot those DTCs first. B --> See step 10 A: Go to next step
  2. INSPECT CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) (POWER SOURCE) Disconnect the camshaft position sensor (for exhaust 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 B62-3 (VC2) - Body ground Ignition switch ON 4.5 to 5.5 V Reconnect the camshaft position sensor (for exhaust camshaft) connector. NG --> See step 9 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (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 (VVE+) - B50-13 (EV1+) Always Below 1 ohms B62-2 (VVE-) - B50-1 (EV1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-1 (VVE+) or B50-13 (EV1+) - Body ground Always 10 kohms or higher B62-2 (VVE-) or B50-1 (EV1-) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for exhaust 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 EXHAUST CAMSHAFT) Check the camshaft position sensor (for exhaust camshaft) installation. OK Sensor is installed correctly. NG --> See step 11 OK: Go to next step
  5. INSPECT EXHAUST CAMSHAFT (TIMING ROTOR) Check the timing rotor of the exhaust camshaft. OK Camshaft timing rotor does not have any cracks or deformation. NG --> See step 12 OK: Go to next step
  6. CHECK VALVE TIMING Check the valve timing See step 5 . NG --> See step 14 OK: Go to next step
  7. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor, refer to REMOVAL . NEXT: Go to next step
  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0365, P0367 OR P0368) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs, refer to DTC CHECK / CLEAR . Turn the ignition switch off. Start the engine and allow the engine to idle for 10 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0365, P0367 or P0368 is output A DTC is not output B HINT: If the engine does not start, replace the ECM. B --> REPAIR COMPLETED A --> See step 13
  9. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft position sensor (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 B62-3 (VC2) - B50-7 (VCE1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-3 (VC2) or B50-7 (VCE1) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
  10. GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
  11. SECURELY REINSTALL SENSOR. Refer to INSTALLATION
  12. REPLACE EXHAUST CAMSHAFT. Refer to REMOVAL
  13. REPLACE ECM. Refer to REMOVAL
  14. ADJUST VALVE TIMING. Refer to REMOVAL

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