Engine Control System (Diagnostic Codes (P0010-P0500)): Diagnosis Scion tC II

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.

HINT

DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

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 213

1. CHECK FOR 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 P0011 or P0012 is output A P0011 or P0012 and other DTCs are output B HINT: If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Turn the A/C 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 using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1 and VVT Change Angle #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-451061-S12130890322012020700000) . NG --> See step 5 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output pending DTCs using the Techstream. OK No pending DTC output. NG --> See step 5 OK --> See step 4
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
5. CHECK VALVE TIMING (CHECK FOR LOOSENESS IN TIMING CHAIN AND WHETHER TIMING CHAIN HAS JUMPED TOOTH) TEXT IN ILLUSTRATION *1 Timing Mark - - Remove the cylinder head cover. Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain cover. Check that the timing marks of the camshaft timing gear and camshaft timing exhaust gear are at the positions shown in the illustration. HINT: If the timing marks are not as shown, turn the crankshaft one revolution clockwise. OK Timing marks on camshaft timing gear and camshaft timing exhaust gear are aligned as shown in the illustration. 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-451166-S14053120172012020700000) . 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-451161-S05307243722012020700000) . Check that the filter is not clogged. OK Filter is not clogged. NG --> CLEAN OR REPLACE 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-451161-S39074156352012020700000) . NEXT: Go to next step
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-451061-S15337112142012020700000)
10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-451161-S15605606162012020700000)
11. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-451166-S18688022592012020700000)
12. CHECK WHETHER DTC OUTPUT RECURS Perform the Confirmation Driving Pattern. OK No pending DTC is output and All Readiness is NORMAL. HINT: DTC P0011 or P0012 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes will remain stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. NG --> See step 13 OK --> END
13. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

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

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

1. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
2. Read freeze frame data using the Techstream. 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. Refer to "Data List / Active Test" [A/F Heater Duty #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-451061-S12130890322012020700000) .

Scheme 214

1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-451166-S17603877312012020700000) . NG --> See step 7 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B 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 B17-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) 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 Tester Connection Condition Specified Condition B17-1 (HA1A) - B30-18 (HA1A) Always Below 1 ohms B17-1 (HA1A) or B30-18 (HA1A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS 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-451061-S23674878372012020700000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output pending DTCs using the Techstream. RESULT Result Proceed to No pending DTC is output A Pending DTC P0031, P0032 or P101D is output B B --> See step 8 A --> See step 9
5. INSPECT INTEGRATION RELAY (EFI NO. 2) Inspect the integration relay (EFI NO. 2). Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-451166-S21973643612012020700000) . NG --> REPLACE INTEGRATION RELAY (EFI NO. 2) OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - AIR FUEL RATIO SENSOR AND BODY GROUND) Disconnect the air fuel ratio sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B17-2 (+B) - 1B-8 Always Below 1 ohms 1B-7 - Body ground Always Below 1 ohms B17-2 (+B) or 1B-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
7. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-451166-S28662501142012020700000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-451172-S01002187532012020700000)

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

HINT

1. Sensor 2 refers to the sensor mounted behind the Three-way Catalytic Converter (TWC) and located far from the engine assembly.
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. Refer to "Data List / Active Test" [O2 Heater B1S2 and O2 Heater Curr Val B1S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-451061-S12130890322012020700000) .
4. When the value for the Data List item O2 Heater Curr Val B1S2 is not 0 A, the heater is on.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 215

1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-451166-S29860841692012020700000) . NG --> See step 7 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B21-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) 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 Tester Connection Condition Specified Condition B21-1 (HT1B) - B30-41 (HT1B) Always Below 1 ohms B21-1 (HT1B) or B30-41 (HT1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS 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-451061-S23674878372012020700000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output pending DTCs using the Techstream. RESULT Result Proceed to No pending DTC is output A Pending DTC P0037, P0038, P0141 and/or P102D is output B B --> See step 8 A --> See step 9
5. INSPECT INTEGRATION RELAY (EFI NO. 2) Inspect the integration relay (EFI NO. 2). Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-451166-S21973643612012020700000) . NG --> REPLACE INTEGRATION RELAY (EFI NO. 2) OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B21-2 (+B) - 1B-8 Always Below 1 ohms B21-2 (+B) or 1B-8 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
7. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-451166-S02745764632012020700000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-451172-S01002187532012020700000)

HINT

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

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

HINT

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

Scheme 216

1. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / MAF. Read the values displayed on the Techstream. RESULT MAF (gm/s) Proceed to 0.0 A 160.0 or more B Between 1.0 and 160.0* C HINT: *: The value must change when the throttle valve is opened 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 SUB-ASSEMBLY (POWER SOURCE VOLTAGE) Disconnect the mass air flow meter connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B2-3 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-5 (VG) - B30-94 (VG) Always Below 1 ohms B2-4 (E2G) - B30-117 (E2G) Always Below 1 ohms B2-5 (VG) or B30-94 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY Inspect the mass air flow meter sub-assembly. Refer to «ON-VEHICLE INSPECTION»(ref-451166-S21296112272012020700000) . NG --> See step 9 OK --> See step 11
5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY) Disconnect the mass air flow meter connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-3 (+B) - 1B-4 Always Below 1 ohms B2-3 (+B) or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
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 Tester Connection Condition Specified Condition B2-5 (VG) - B30-94 (VG) Always Below 1 ohms B2-4 (E2G) - B30-117 (E2G) Always Below 1 ohms B2-5 (VG) or B30-94 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-4 (E2G) - Body ground Always Below 1 ohms NG --> See step 10 OK --> See step 13
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
9. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-451166-S16902211522012020700000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
11. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
12. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-451172-S01002187532012020700000)
13. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-451166-S16902211522012020700000)

Scheme 217

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.

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 218

Scheme 219

1. READ VALUE USING TECHSTREAM (INTAKE AIR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / 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 140°C (284°F) or higher 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) 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 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 / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter Sub-assembly) NG --> See step 3 OK --> See step 5
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-1 (THA) - B30-116 (THA) Always Below 1 ohms B2-2 (E2) - B30-93 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
5. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-451166-S16902211522012020700000)
6. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
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 / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter Sub-assembly *2 ECM NG --> See step 8 OK --> See step 9
8. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B2-1 (THA) or B30-116 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
9. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY. Refer to «REMOVAL»(ref-451166-S16902211522012020700000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

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 220

Scheme 221

1. READ VALUE USING TECHSTREAM (COOLANT TEMP) 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 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) or higher 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) or higher. B --> See step 4 C --> See step 6 A: Go to next step
2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector (to Engine Coolant Temperature Sensor) NG --> See step 3 OK --> See step 7
3. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B3-2 - B30-64 (THW) Always Below 1 ohms B3-1 - B30-65 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect the Techstream to the DLC3. Turn the 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) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM NG --> See step 5 OK --> See step 9
5. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B3-2 or B30-64 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
7. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-451166-S23067205972012020700000)
8. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-451166-S23067205972012020700000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

HINT

1. If DTC P0115, P0117, P0118 or P0125 is stored simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or 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

1. These DTCs relate to the throttle position sensor.
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 222

1. READ VALUE USING TECHSTREAM (THROTTLE POSITION) 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 / Throttle Position No. 1 and Throttle Position No. 2. Check the values displayed on the Techstream. RESULT Throttle Position No. 1 (VTA1) When Accelerator Pedal Released Throttle Position No. 2 (VTA2) When Accelerator Pedal Released Throttle Position No. 1 (VTA1) When Accelerator Pedal Depressed Throttle Position No. 2 (VTA2) When Accelerator Pedal Depressed Trouble Area Proceed to 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 A 0 to 0.2 V, or 4.5 to 5.0 V 2.1 to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.1 to 3.1 V (Fail-safe) VTA1 circuit open or shorted to ground A 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or shorted to ground A 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.6 to 5.0 V (Not fail-safe) TP sensor circuit normal B HINT: DTC P0121 is stored when the 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 "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 with motor body connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B22-5 (VC) - B30-88 (VCTA) Always Below 1 ohms B22-6 (VTA) - B30-90 (VTA1) Always Below 1 ohms B22-4 (VTA2) - B30-89 (VTA2) Always Below 1 ohms B22-3 (E2) - B30-111 (ETA) Always Below 1 ohms B22-5 (VC) or B30-88 (VCTA) - Body ground Always 10 kohms or higher B22-6 (VTA) or B30-90 (VTA1) - Body ground Always 10 kohms or higher B22-4 (VTA2) or B30-89 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle with motor body connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B22-5 (VC) - B22-3 (E2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Throttle with Motor Body Assembly) NG --> See step 6 OK: Go to next step
4. REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Replace the throttle with motor body assembly. Refer to «REMOVAL»(ref-451166-S06090055942012020700000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Read the output DTCs. RESULT Result Proceed to P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 is output A No DTC is output B B --> END A --> See step 7
6. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

HINT

1. If DTC P0115, P0116, P0117 or P0118 is stored simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or 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

1. This DTC relates to the thermostat.
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

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

The following instructions describe how to conduct the Control the Injection Volume operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Warm up the engine and run the engine at an engine speed of 2500 rpm for approximately 90 seconds.
4. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume.
5. Perform the Active Test operation with the engine idling.
6. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

1. Change the fuel injection volume within the range of -12.0% to +12.0%. The injection volume can be changed in fine gradations.
2. 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.

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

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

HINT

1. Following the Control the Injection Volume 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 / All Data / AFS Voltage B1S1 and O2S B1S2.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
4. If the OX1B wire from the ECM connector is short-circuited to the +B wire, DTC P0136 will be stored.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 223

Scheme 224

1. READ OUTPUT DTC 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 P0138 is output A P0137 is output B P0136 is output C P0139 is output D P0136, P0137 or P0138 and other DTCs are output E B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 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) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E2) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor for Bank 1) 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. 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 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 23
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 / Control the Injection Volume / All Data / O2S B1S2. Change the fuel injection volume using the Techstream, monitoring the voltage output of the heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. Standard voltage Fluctuates between 0.4 V or less and 0.5 V or higher. NG --> See step 6 OK: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the Techstream on. Start the engine. 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 gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1, and the heated oxygen sensor is displayed as O2S B1S2 on the Techstream. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. RESULT Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 Alternates between higher than and below 3.3 V OK Remains higher than 3.3 V NG Remains below 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either 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 --> CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO AND REPAIR CAUSE (FUEL INJECTOR ASSEMBLY, FUEL PRESSURE, GAS LEAK FROM SYSTEM)
6. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 21 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 Tester Connection Condition Specified Condition B21-1 (HT1B) - B30-41 (HT1B) Always Below 1 ohms B21-3 (OX1B) - B30-125 (OX1B) Always Below 1 ohms B21-4 (E2) - B30-102 (O1B-) Always Below 1 ohms B21-1 (HT1B) or B30-41 (HT1B) - Body ground Always 10 kohms or higher B21-3 (OX1B) or B30-125 (OX1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-451166-S02745764632012020700000) . NEXT: Go to next step
10. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (P0136, P0137 or P0138 is output) A NORMAL (No DTC is output) B B --> END A --> See step 24
12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-451166-S28662501142012020700000) . NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0136, P0137 or P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (P0136, P0137 or P0138 is output) A NORMAL (No DTC is output) B B --> END A --> See step 25
15. 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
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 Tester Connection Condition Specified Condition B30-41 (HT1B) - B30-125 (OX1B) Always 10 kohms or higher 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 (CHECK WHETHER DTC P0139 IS OUTPUT AGAIN) Read the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . RESULT Result Proceed to P0139 is output A No DTC is output B B --> See step 22 A --> See step 26
19. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-451061-S15337112142012020700000)
20. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-451166-S02745764632012020700000)
21. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-451166-S02745764632012020700000)
22. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
23. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
24. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-451166-S28662501142012020700000)
25. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-451166-S02745764632012020700000)
26. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-451166-S02745764632012020700000)

HINT

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

HINT

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 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. 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 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 misfiring still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors may be a cause of the problem: The fuel level is low. Improper fuel is being used. The spark plugs are dirty.
5. After finishing repairs, check that no misfires occur in each cylinder (cylinder No. 1, No. 2, No. 3 and No. 4).
6. Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after the repairs.
7. For 6 and 8 cylinder engines, the ECM intentionally does not store the specific misfiring cylinder DTCs at high engine speed. If misfires only occur during high engine speed driving, only DTC P0300 is stored. In the event of DTC P0300 being output, perform the following operations: Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or the DTCs using the Techstream. Repair the cylinders that have a high misfiring rate or are indicated by the DTCs. After finishing repairs, conduct the confirmation driving pattern again in order to verify that DTC P0300 is not stored.
8. When one of Short FT #1 or Long FT #1 in the freeze frame data is outside the range of +/-15%, the air-fuel ratio may be rich (-15% or less) or lean (+15% or more).
9. When Coolant Temp in the freeze frame data is below 75°C (167°F), the misfires may have occurred only while warming up the engine.
10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be stored.

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 225

Scheme 226

1. INSPECT KNOCK SENSOR Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B30-87 (KNK1) - B30-110 (EKNK) 20°C (68°F) 120 to 280 kohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 3 OK: Go to next step
2. INSPECT ECM Disconnect the BM1 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 BM1 female connector 1 - 5 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Female *a Front view of wire harness connector (to ECM Wire) NG --> See step 4 OK --> See step 5
3. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) Disconnect the ECM connector. Disconnect the knock sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-2 - B30-87 (KNK1) Always Below 1 ohms M1-1 - B30-110 (EKNK) Always Below 1 ohms M1-2 or B30-87 (KNK1) - Body ground Always 10 kohms or higher M1-1 or B30-110 (EKNK) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)
6. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-451166-S18066858582012020700000)

HINT

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

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

HINT

1. If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical section.
2. The engine speed can be checked by using the Techstream. To perform the check, follow the procedures 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 engine running normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions 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 227

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. Standard 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 12
2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor. Refer to «INSPECTION - Step 1»(ref-451166-S10840621592012020700000) . NG --> See step 8 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 Tester Connection Condition Specified Condition B15-1 - B30-74 (NE+) Always Below 1 ohms B15-2 - B30-120 (NE-) Always Below 1 ohms B15-1 or B30-74 (NE+) - Body ground Always 10 kohms or higher B15-2 or B30-120 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
5. INSPECT CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate does not have any cracks or deformation. NG --> See step 10 OK: Go to next step
6. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-451166-S36857639342012020700000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339) 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-451061-S23674878372012020700000) . Start the engine. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to No DTC is output A P0335 or P0339 is output B HINT: If the engine does not start, replace the ECM. B --> See step 11 A --> END
8. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-451166-S36857639342012020700000)
9. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-451166-S30573420872012020700000)
10. REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-451161-S08339922292012020700000)
11. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)
12. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-451061-S02913597072012020700000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine conditions 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 228

Scheme 229

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the camshaft position sensor for intake side connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B25-3 (VC) - Body ground Ignition switch ON 4.5 to 5.0 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Camshaft Position Sensor for Intake Side) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR FOR INTAKE SIDE - ECM) Disconnect the camshaft position sensor for intake side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B25-1 (VV1+) - B30-76 (G2+) Always Below 1 ohms B25-2 (VV1-) - B30-122 (G2-) Always Below 1 ohms B25-1 (VV1+) or B30-76 (G2+) - Body ground Always 10 kohms or higher B25-2 (VV1-) or B30-122 (G2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR FOR INTAKE SIDE) Check the camshaft position sensor for intake side installation. OK Sensor is installed correctly. NG --> See step 7 OK: Go to next step
4. INSPECT NO. 1 CAMSHAFT (TEETH) Check the teeth of the No. 1 camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 8 OK: Go to next step
5. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE SIDE) Replace the camshaft position sensor for intake side. Refer to «REMOVAL»(ref-451166-S11972717362012020700000) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Start the engine and idle it for 10 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the DTCs. RESULT Result Proceed to No DTC is output A P0340, P0342 or P0343 is output B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-451166-S23344292532012020700000)
8. REPLACE NO. 1 CAMSHAFT. Refer to «REMOVAL»(ref-451161-S39074156352012020700000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

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 230

1. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B26-4 (GND) - Body ground Always Below 1 ohms B27-4 (GND) - Body ground Always Below 1 ohms B28-4 (GND) - Body ground Always Below 1 ohms B29-4 (GND) - Body ground Always Below 1 ohms Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B26-1 (+B) - B26-4 (GND) Ignition switch ON 11 to 14 V B27-1 (+B) - B27-4 (GND) Ignition switch ON 11 to 14 V B28-1 (+B) - B28-4 (GND) Ignition switch ON 11 to 14 V B29-1 (+B) - B29-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B26-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B27-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B28-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B29-2 (IGF) - B30-23 (IGF1) Always Below 1 ohms B26-3 (IGT1) - B30-108 (IGT1) Always Below 1 ohms B27-3 (IGT2) - B30-107 (IGT2) Always Below 1 ohms B28-3 (IGT3) - B30-106 (IGT3) Always Below 1 ohms B29-3 (IGT4) - B30-105 (IGT4) Always Below 1 ohms B26-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B27-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B28-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B29-2 (IGF) or B30-23 (IGF1) - Body ground Always 10 kohms or higher B26-3 (IGT1) or B30-108 (IGT1) - Body ground Always 10 kohms or higher B27-3 (IGT2) or B30-107 (IGT2) - Body ground Always 10 kohms or higher B28-3 (IGT3) or B30-106 (IGT3) - Body ground Always 10 kohms or higher B29-3 (IGT4) or B30-105 (IGT4) - Body ground Always 10 kohms or higher 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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-451061-S23674878372012020700000) . Shuffle the arrangement of the ignition coil assemblies (among the No. 1 to No. 4 cylinders). NOTE: Do not shuffle the connectors. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Check the DTCs output on the Techstream. RESULT Result Proceed to Same DTC is output A Different ignition coil DTC is output B B --> See step 4 A --> See step 5
4. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-451166-S42926346012012020700000)
5. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

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 231

Scheme 232

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the camshaft position sensor for exhaust side connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B23-3 (VC2) - Body ground Ignition switch ON 4.5 to 5.0 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Camshaft Position Sensor for Exhaust Side) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR FOR EXHAUST SIDE - ECM) Disconnect the camshaft position sensor for exhaust side connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B23-1 (VVE+) - B30-75 (EV1+) Always Below 1 ohms B23-2 (VVE-) - B30-121 (EV1-) Always Below 1 ohms B23-1 (VVE+) or B30-75 (EV1+) - Body ground Always 10 kohms or higher B23-2 (VVE-) or B30-121 (EV1-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR FOR EXHAUST SIDE) Check the camshaft position sensor for exhaust side installation. OK Sensor is installed correctly. NG --> See step 7 OK: Go to next step
4. INSPECT NO. 2 CAMSHAFT (TEETH) Check the teeth of the No. 2 camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 8 OK: Go to next step
5. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST SIDE) Replace the camshaft position sensor for exhaust side. Refer to «REMOVAL»(ref-451166-S11972717362012020700000) . NEXT: Go to next step
6. 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-451061-S23674878372012020700000) . Start the engine and idle it for 10 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. Read the DTCs. RESULT Result Proceed to No DTC is output A P0365, P0367 or P0368 is output B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-451166-S23344292532012020700000)
8. REPLACE NO. 2 CAMSHAFT. Refer to «REMOVAL»(ref-451161-S39074156352012020700000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000)

CONDITIONING FOR SENSOR TESTING

HINT

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

Scheme 233

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

HINT

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

RESULT OF REAL-VEHICLE CHECK

Scheme 234

HINT

1. After performing repairs, drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern and check if DTC P0420 is output again. If a DTC is output again, replace the catalyst if it has not been replaced already.
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. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to EVAP System. Refer to INSPECTION PROCEDURE .

Refer to EVAP System. Refer to INSPECTION PROCEDURE .

HINT

Unit expressions

1. [kPa-a (mmHg-a)] is absolute pressure.
2. [kPa-g (mmHg-g)] is gauge pressure (relative pressure).
3. On the Techstream, convert the unit of measurement according to the inspection procedure.

HINT

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

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

Scheme 235

Scheme 236

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the ignition switch to ON (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Enter the following menus: Powertrain / Engine / Data List / All Data / Vapor Pressure Pump. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. RESULT Result Test Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Below 45 kPa-a (430 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 Higher than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Open in ECM circuit B B --> See step 5 C --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B30-114 (PPMP) - Body ground Always 10 ohms or less Wire harness/connector (ECM - Canister pressure sensor) Short in canister pressure sensor circuit A B30-114 (PPMP) - Body ground Always 10 kohms or higher Wire harness/connector (ECM - Canister pressure sensor) Short in ECM circuit B B --> See step 8 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to B30-114 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A B30-114 (PPMP) - Body ground Always 10 ohms or less Short in wire harness/connector (ECM - Canister pressure sensor) B A --> See step 6 B --> See step 7
4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-451172-S03495382962012020700000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H20-8 (SGND) - Body ground Always 100 ohms or less 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 H20-6 (VCC) - Body ground Ignition switch ON 4.5 to 5.5 V H20-7 (VOUT) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) RESULT Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - Canister pressure sensor) B B --> See step 7 A: Go to next step
6. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-451182-S29111003172012020700000) . NOTE: When replacing the canister assembly, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Vent Hose *3 Air Inlet Port *4 Fuel Tank *5 Canister - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT --> See step 9
7. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER PUMP MODULE - ECM) HINT: If the exhaust tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 9
8. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-451166-S22630148492012020700000) . NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) 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-451061-S23674878372012020700000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P0451, P0452 or P0453. Check the DTC judgment result. RESULT Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions UNKNOWN Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit NEXT --> END

Refer to EVAP System. Refer to 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.