Engine Control System [1AR-FE] [Diagnostic Codes] [P0010-P0420]: Diag… — Engine Control System [1AR-FE] [Diagnostic Codes] [P0010-P0420] — Testing & Diagnostics

INSPECTION PROCEDURE

HINT

If DTC P0010 is output, check the VVT system (for intake camshaft) circuit.
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

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.
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 347

Scheme 347: PROCEDURE

Scheme 348

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 DTCs. RESULT Result Proceed to DTC P0011 or P0012 is output A DTC P0011 or P0012 and other DTCs are output B HINT: If any DTCs other than P0011 or P0012 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
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. 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-493953-S07536272062012081000000) . NG --> See step 4 OK: Go to next step
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-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. 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 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 11
CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Remove the cylinder head cover. Refer to «REMOVAL»(ref-494104-S21825206572012081000000) . TEXT IN ILLUSTRATION *1 Timing Mark - - *a Reference Camshaft Layout - - 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»(ref-494104-S30744238822012081000000) . NG --> See step 10 OK: Go to next step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Inspect the camshaft timing oil control valve assembly (for intake camshaft). Refer to «INSPECTION»(ref-493956-S02241245632012081000000) . NG --> See step 14 OK: Go to next step
INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY»(ref-494104-S11944086082012081000000) . Check that the filter is not clogged. OK Filter is not clogged. Reinstall the oil control valve filter. Refer to «REASSEMBLY»(ref-494104-S42219833092012081000000) . TEXT IN ILLUSTRATION *1 Oil Control Valve Filter NG --> See step 12 OK: Go to next step
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly (for intake camshaft). Refer to «REMOVAL»(ref-494104-S21825206572012081000000) . NEXT: Go to next step
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-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. 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 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 13 A --> END
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493953-S38664206892012081000000)
ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-494104-S42219833092012081000000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
CLEAN OR REPLACE OIL CONTROL VALVE FILTER. Refer to «DISASSEMBLY»(ref-494104-S11944086082012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT). Refer to «REMOVAL»(ref-493956-S00975655292012081000000)

HINT

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

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.
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

The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
If DTC P0016 is displayed, check the VVT system for intake camshaft.
If DTC P0017 is displayed, check the VVT system for exhaust camshaft.
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

Refer to "Data List / Active Test" [A/F Heater Duty #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-493953-S07536272062012081000000) .
Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
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.
Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-494127-S02304431112012081000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 349

Scheme 349: PROCEDURE

INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-493956-S14420091362012081000000) . NG --> See step 7 OK: Go to next step
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 B14-2 (+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
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 B14-1 (HA1A) - B45-18 (HA1A) Always Below 1 ohms B14-1 (HA1A) or B45-18 (HA1A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
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»(ref-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read 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 9
INSPECT A/F HTR RELAY Inspect the A/F HTR relay. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493956-S18003567782012081000000) . NG --> REPLACE A/F HTR RELAY OK: Go to next step
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - A/F HTR RELAY) Disconnect the air fuel ratio sensor connector. Remove the A/F HTR 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 B14-2 (+B) - 3 (A/F HTR relay holder) Always Below 1 ohms B14-2 (+B) or 3 (A/F HTR relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493956-S22890663962012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494125-S22657407532012081000000)

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

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
Refer to "Data List / Active Test" [O2 Heater B1S2 and O2 Heater Curr Val B1S2]. Refer to «DATA LIST / ACTIVE TEST»(ref-493953-S07536272062012081000000) .
When the values for the Data List item O2 Heater Curr Val B1S2 is not 0 A, the heater is on.
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.
Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the heated oxygen sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-494127-S02304431112012081000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 350

Scheme 350: PROCEDURE

INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-493956-S28082671232012081000000) . NG --> See step 5 OK: Go to next step
CHECK TERMINAL VOLTAGE (POWER SOURCE 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 D38-2 (+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 8 OK: Go to next step
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 D38-1 (HT1B) - B45-41 (HT1B) Always Below 1 ohms D38-1 (HT1B) or B45-41 (HT1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
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»(ref-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read pending DTCs. RESULT Result Proceed to DTC is not output A DTC P0037, P0038, P0141 or P102D is output B B --> See step 6 A --> See step 7
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493956-S34814876242012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
INSPECT A/F HTR RELAY Inspect the A/F HTR relay. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-493956-S18003567782012081000000) . NG --> REPLACE A/F HTR RELAY OK: Go to next step
CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - A/F HTR RELAY) Disconnect the heated oxygen sensor connector. Remove the A/F HTR 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 D38-2 (+B) - 3 (A/F HTR relay holder) Always Below 1 ohms D38-2 (+B) or 3 (A/F HTR relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494125-S22657407532012081000000)

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.

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

HINT

Scheme 351

Scheme 351: PROCEDURE

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. Read DTCs. RESULT Result Proceed to DTC P0102 is output A DTC P0103 is output B B --> See step 5 A: Go to next step
CHECK TERMINAL VOLTAGE (POWER SOURCE OF MASS AIR FLOW METER) 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 B4-3 (+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) NG --> See step 7 OK: Go to next step
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 B4-5 (VG) - B45-94 (VG) Always Below 1 ohms B4-4 (E2G) - B45-117 (E2G) Always Below 1 ohms B4-5 (VG) or B45-94 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(ref-493956-S24211633112012081000000) . Inspect the mass air flow meter, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-493956-S20324221552012081000000) . 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. Enter the following menus: Powertrain / Engine / Data List / MAF. Start the engine. Check that the MAF value changes when the engine is raced. OK The reading changes. NG --> See step 8 OK --> See step 9
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 B4-4 (E2G) - Body ground Always Below 1 ohms NG --> See step 6 OK --> See step 10
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 B4-4 (E2G) - B45-117 (E2G) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - EFI MAIN RELAY) Disconnect the mass air flow meter connector. Remove the EFI MAIN 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 B4-3 (+B) - 3 (EFI MAIN relay holder) Always Below 1 ohms B4-3 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493956-S01163412562012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493956-S01163412562012081000000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494125-S22657407532012081000000)

Scheme 352

Scheme 352: DESCRIPTION

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
The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
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 Condition	Trouble Area
P0111	When 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 the intake air temperature sensor output is below threshold. While the engine is warming up after a cold engine start, the change in the intake air temperature sensor output is below threshold.	Mass air flow meter

HINT

Scheme 353

Scheme 353: PROCEDURE

Scheme 354

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 / Intake Air. Read the value displayed on the Techstream. OK Same as actual intake air temperature. RESULT Result Proceed to -40°C (-40°F) A Higher than 128°C (262°F) B Same as actual intake air temperature C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 128°C (262°F). B --> See step 7 C --> See step 4 A: Go to next step
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 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 / Intake Air. Read the value displayed on the Techstream. Standard value Higher than 128°C (262°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM *a Front view of wire harness connector (to Mass Air Flow Meter) Reconnect the mass air flow meter connector. NG --> See step 3 OK --> See step 5
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 B4-1 (THA) - B45-116 (THA) Always Below 1 ohms B4-2 (E2) - B45-93 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493956-S01163412562012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
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 / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) TEXT IN ILLUSTRATION *1 Mass Air Flow Meter *2 ECM Reconnect the mass air flow meter connector. NG --> See step 8 OK --> See step 9
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 B4-1 (THA) or B45-116 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-493956-S01163412562012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)

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.
If DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).

Scheme 355

Scheme 355: PROCEDURE

Scheme 356

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 / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 75 and 100°C (167 and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A Higher than 135°C (275°F) B Between 75 and 100°C (167 and 212°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates higher than 135°C (275°F). B --> See step 7 C --> See step 4 A: Go to next step
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 / Coolant Temp. Read the value displayed on the Techstream. Standard value Higher than 135°C (275°F) TEXT IN ILLUSTRATION *1 Engine Coolant Temperature Sensor *2 ECM *a Front view of wire harness connector (to Engine Coolant Temperature Sensor) NG --> See step 3 OK --> See step 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 B5-2 - B45-64 (THW) Always Below 1 ohms B5-1 - B45-65 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493956-S20094363372012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
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 / 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 8 OK --> See step 9
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 B5-2 or B45-64 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-493956-S20094363372012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)

HINT

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

HINT

Scheme 357

Scheme 357: PROCEDURE

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 / 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 (VTA1) Throttle Position No. 2 (VTA2) Throttle Position No. 1 (VTA1) Throttle Position No. 2 (VTA2) 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 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
CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle with motor body assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B20-5 (VC) - B45-88 (VCTA) Always Below 1 ohms B20-6 (VTA) - B45-90 (VTA1) Always Below 1 ohms B20-4 (VTA2) - B45-89 (VTA2) Always Below 1 ohms B20-3 (E2) - B45-111 (ETA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B20-5 (VC) or B45-88 (VCTA) - Body ground Always 10 kohms or higher B20-6 (VTA) or B45-90 (VTA1) - Body ground Always 10 kohms or higher B20-4 (VTA2) or B45-89 (VTA2) - Body ground Always 10 kohms or higher Reconnect the throttle with motor body assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT ECM (VC VOLTAGE) Disconnect the throttle with motor body assembly connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B20-5 (VC) - B20-3 (E2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Throttle with Motor Body Assembly) Reconnect the throttle with motor body assembly connector. NG --> See step 6 OK: Go to next step
REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Replace the throttle with motor body assembly. Refer to «REMOVAL»(ref-493956-S35247803402012081000000) . NEXT: Go to next step
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-493953-S27327777792012081000000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. 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
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)

HINT

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.
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

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

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume.
Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream.

HINT

Change the fuel injection volume within the range of -12.0% to +12.0%. The injection volume can be changed in fine gradations.
Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Techstream Display (Sensor)	Injection Volume	Status	Voltage
AFS Voltage B1S1 (Air fuel ratio)	+12%	Rich	Below 3.1 V
AFS Voltage B1S1 (Air fuel ratio)	12%	Lean	Higher than 3.4 V
O2S B1S2 (Heated oxygen)	+12%	Rich	Higher than 0.55 V
O2S B1S2 (Heated oxygen)	12%	Lean	Below 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 assembly Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 358

Scheme 359

Scheme 360

Scheme 361

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.
To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2; and then press the graph button on the Data List view.

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

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
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 362

Scheme 362: PROCEDURE

Scheme 363

Scheme 364

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0136, P0137, P0138 AND 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 DTCs. RESULT Result Proceed to DTC P0138 is output A DTC P0137 is output B DTC P0136 is output C DTC P0139 is output D DTC P0136, P0137 or P0138 and other DTCs are output E HINT: If any DTCs other than P0136, P0137 or P0138 are output, troubleshoot those DTCs first. B --> See step 6 C --> See step 4 D --> See step 13 E --> See step 24 A: Go to next step
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) TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) NG --> See step 23 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B45-41 (HT1B) - B45-125 (OX1B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 22
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 / O2S B1S2. Change the fuel injection volume using the Techstream, monitoring the voltage output of the heated oxygen sensor 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 0.55 V or higher. NG --> See step 6 OK: Go to next step
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 gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1, and the heated oxygen sensor is displayed as O2S B1S2 on the Techstream. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (Air fuel ratio) Alternates between higher 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 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 11 OK --> See step 21
CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-493956-S28082671232012081000000) . NG --> See step 20 OK: Go to next step
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 D38-1 (HT1B) - B45-41 (HT1B) Always Below 1 ohms D38-3 (OX1B) - B45-125 (OX1B) Always Below 1 ohms D38-4 (E2) - B45-102 (EX1B) Always Below 1 ohms D38-1 (HT1B) or B45-41 (HT1B) - Body ground Always 10 kohms or higher D38-3 (OX1B) or B45-125 (OX1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-493956-S34814876242012081000000) . NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs (even if no DTCs are stored, perform the Clear DTC procedure). Refer to «DTC CHECK / CLEAR»(ref-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern (P0136, P0137 and P0138). Check the DTC judgment. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0136, P0137 or P0138 is output) B B --> See step 19 A --> END
REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-493956-S22890663962012081000000) . NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs (even if no DTCs are stored, perform the Clear DTC procedure). Refer to «DTC CHECK / CLEAR»(ref-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern (P0136, P0137 and P0138). Check the DTC judgment. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0136, P0137 or P0138 is output) B B --> See step 18 A --> END
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
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) 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 B45-41 (HT1B) - B45-125 (OX1B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
READ DTC OUTPUT (DTC P0139 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs (even if no DTCs are stored, perform the Clear DTC procedure). Refer to «DTC CHECK / CLEAR»(ref-493953-S27327777792012081000000) . Turn the ignition switch off and wait for at least 30 seconds. Turn the ignition switch to ON. Turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern (P0139). Check the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. RESULT Result Proceed to ABNORMAL (P0139 is output) A NORMAL (No DTC output) B B --> See step 17 A --> See step 16
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493956-S34814876242012081000000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493956-S34814876242012081000000)
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-493956-S22890663962012081000000)
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493956-S34814876242012081000000)
CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (FUEL INJECTOR, FUEL SYSTEM, INTAKE SYSTEM, ETC.). Refer to «INSPECTION PROCEDURE»(ref-494127-S10663880772012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-493956-S34814876242012081000000)
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-493953-S38664206892012081000000)

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

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
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.
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.
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.

HINT

If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
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.
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.
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.
After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to Cylinder #4 Misfire Count).
Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern after finishing repairs.
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).
When Coolant Temp in the freeze frame data is below 75°C (167°F), the misfires have occurred only while warming up the engine.
An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be stored.

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

HINT

Scheme 365

Scheme 365: PROCEDURE

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 / 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
CHECK TERMINAL VOLTAGE (POWER SOURCE OF KNOCK SENSOR) 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 f3-2 - f3-1 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Knock Sensor) Reconnect the knock sensor connector. NG --> See step 4 OK: Go to next step
INSPECT KNOCK SENSOR Inspect the knock sensor. Refer to «INSPECTION»(ref-493956-S03112260982012081000000) . NG --> See step 7 OK --> See step 6
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 f3-2 - B45-87 (KNK1) Always Below 1 ohms f3-1 - B45-110 (EKNK) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition f3-2 or B45-87 (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
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-493956-S10199874952012081000000)

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.

Installation condition of the camshaft position sensors
Installation condition of the camshafts
Connection of the camshaft position sensor connectors

HINT

If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.
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 / 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.
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 366

Scheme 366: PROCEDURE

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 / 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
INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-493956-S09042049842012081000000) . NG --> See step 9 OK: Go to next step
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 B15-1 - B45-74 (NE+) Always Below 1 ohms B15-2 - B45-120 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B15-1 or B45-74 (NE+) - Body ground Always 10 kohms or higher B15-2 or B45-120 (NE-) - Body ground Always 10 kohms or higher Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
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
INSPECT CRANKSHAFT (TEETH OF CRANK ANGLE 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
REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-493956-S35159865862012081000000) . NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 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-493953-S27327777792012081000000) . Turn the ignition switch off. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read 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 --> END
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-493953-S11245618992012081000000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-493956-S35159865862012081000000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493956-S19757680472012081000000)
REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-494104-S11944086082012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)

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

Scheme 367

Scheme 367: PROCEDURE

Scheme 368

CHECK TERMINAL VOLTAGE (POWER SOURCE OF CAMSHAFT POSITION SENSOR) 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 B16-3 (VC) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Camshaft Position Sensor for Intake Camshaft) Reconnect the camshaft position sensor for intake camshaft connector. NG --> See step 8 OK: Go to next step
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 B16-1 (VVI+) - B45-76 (G2+) Always Below 1 ohms B16-2 (VVI-) - B45-122 (G2-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-1 (VVI+) or B45-76 (G2+) - Body ground Always 10 kohms or higher B16-2 (VVI-) or B45-122 (G2-) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor for intake camshaft connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
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 9 OK: Go to next step
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 10 OK: Go to next step
CHECK VALVE TIMING Check the valve timing See step 4 . NG --> See step 12 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR FOR INTAKE CAMSHAFT Replace the camshaft position sensor for intake camshaft. Refer to «REMOVAL»(ref-493956-S38605125322012081000000) . NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC 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»(ref-493953-S27327777792012081000000) . Turn the ignition switch off. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0340, P0342 or P0343 is output A DTC is not output (No pending DTC outputs) B HINT: If the engine does not start, replace the ECM. B --> END A --> See step 11
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 B16-3 (VC) - B45-99 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B16-3 (VC) or B45-99 (VCV1) - Body ground Always 10 kohms or higher Reconnect the camshaft position sensor for intake camshaft connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493956-S12130628532012081000000)
REPLACE INTAKE CAMSHAFT. Refer to «REMOVAL»(ref-494104-S21825206572012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-494104-S42219833092012081000000)

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

HINT

Scheme 369

Scheme 369: PROCEDURE

CHECK TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL ASSEMBLY) Disconnect the ignition coil assembly connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition B47-1 (+B) - B47-4 (GND) Ignition switch ON 11 to 14 V B48-1 (+B) - B48-4 (GND) Ignition switch ON 11 to 14 V B49-1 (+B) - B49-4 (GND) Ignition switch ON 11 to 14 V B50-1 (+B) - B50-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) NG --> See step 4 OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the ignition coil assembly connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B47-2 (IGF) - B45-23 (IGF1) Always Below 1 ohms B48-2 (IGF) - B45-23 (IGF1) Always Below 1 ohms B49-2 (IGF) - B45-23 (IGF1) Always Below 1 ohms B50-2 (IGF) - B45-23 (IGF1) Always Below 1 ohms B47-3 (IGT1) - B45-108 (IGT1) Always Below 1 ohms B48-3 (IGT2) - B45-107 (IGT2) Always Below 1 ohms B49-3 (IGT3) - B45-106 (IGT3) Always Below 1 ohms B50-3 (IGT4) - B45-105 (IGT4) Always Below 1 ohms B47-2 (IGF) or B45-23 (IGF1) - Body ground Always 10 kohms or higher B48-2 (IGF) or B45-23 (IGF1) - Body ground Always 10 kohms or higher B49-2 (IGF) or B45-23 (IGF1) - Body ground Always 10 kohms or higher B50-2 (IGF) or B45-23 (IGF1) - Body ground Always 10 kohms or higher B47-3 (IGT1) or B45-108 (IGT1) - Body ground Always 10 kohms or higher B48-3 (IGT2) or B45-107 (IGT2) - Body ground Always 10 kohms or higher B49-3 (IGT3) or B45-106 (IGT3) - Body ground Always 10 kohms or higher B50-3 (IGT4) or B45-105 (IGT4) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-493953-S27327777792012081000000) . Shuffle the arrangement of the ignition coil assemblies (among No. 1 to No. 4 cylinders). NOTE: Do not change the location of the connectors. Perform a simulation test. Enter the following menus: Powertrain / Engine / Trouble Codes. Read DTCs. RESULT Result Proceed to Same DTC output A Different ignition coil DTC output B B --> See step 5 A --> See step 6
CHECK HARNESS AND CONNECTOR (IG2 RELAY - IGNITION COIL ASSEMBLY - BODY GROUND) Disconnect the ignition coil assembly connectors. Remove the IG2 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 B47-1 (+B) - 3 (IG2 relay holder) Always Below 1 ohms B48-1 (+B) - 3 (IG2 relay holder) Always Below 1 ohms B49-1 (+B) - 3 (IG2 relay holder) Always Below 1 ohms B50-1 (+B) - 3 (IG2 relay holder) Always Below 1 ohms B47-4 (GND) - Body ground Always Below 1 ohms B48-4 (GND) - Body ground Always Below 1 ohms B49-4 (GND) - Body ground Always Below 1 ohms B50-4 (GND) - Body ground Always Below 1 ohms B47-1 (+B) or 3 (IG2 relay holder) - Body ground Always 10 kohms or higher B48-1 (+B) or 3 (IG2 relay holder) - Body ground Always 10 kohms or higher B49-1 (+B) or 3 (IG2 relay holder) - Body ground Always 10 kohms or higher B50-1 (+B) or 3 (IG2 relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-493956-S22922283572012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-494125-S22657407532012081000000)

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

Scheme 370

Scheme 370: PROCEDURE

CHECK TERMINAL VOLTAGE (POWER SOURCE OF CAMSHAFT POSITION SENSOR) 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 B54-3 (VC2) - Body ground Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Camshaft Position Sensor for Exhaust Camshaft) Reconnect the camshaft position sensor for exhaust camshaft connector. NG --> See step 8 OK: Go to next step
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 B54-1 (VVE+) - B45-75 (EV1+) Always Below 1 ohms B54-2 (VVE-) - B45-121 (EV1-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B54-1 (VVE+) or B45-75 (EV1+) - Body ground Always 10 kohms or higher B54-2 (VVE-) or B45-121 (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
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 9 OK: Go to next step
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 10 OK: Go to next step
CHECK VALVE TIMING Check the valve timing See step 4 . NG --> See step 12 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR FOR EXHAUST CAMSHAFT Replace the camshaft position sensor for exhaust camshaft. Refer to «REMOVAL»(ref-493956-S38605125322012081000000) . NEXT: Go to next step
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»(ref-493953-S27327777792012081000000) . Turn the ignition switch off. Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. 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 --> END A --> See step 11
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 B54-3 (VC2) - B45-98 (VCE1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B54-3 (VC2) or B45-98 (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 11
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-493956-S12130628532012081000000)
REPLACE EXHAUST CAMSHAFT. Refer to «REMOVAL»(ref-494104-S21825206572012081000000)
REPLACE ECM. Refer to «REMOVAL»(ref-493956-S41779092162012081000000)
ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-494104-S42219833092012081000000)

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 371

Scheme 371: CONDITIONING FOR SENSOR TESTING

(a) Connect the Techstream to the DLC3.
(b) Start the engine and warm it up with all the accessories switched off until the engine coolant temperature stabilizes.
(c) Run the engine at an engine speed of between 2500 RPM and 3000 RPM for at least 3 minutes.
(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

If the voltage output of either the air fuel ratio or heated oxygen sensor does not fluctuate, or there is a noise in the waveform of either sensor, the sensor may be malfunctioning.
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 Active Test using the Techstream.
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).

Scheme 372

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
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.

Engine Control System [1AR-FE] [Diagnostic Codes] [P0010-P0420]: Diagnosis Toyota Sienna III

INSPECTION PROCEDURE

Scheme 347

Scheme 348

Scheme 349

Scheme 350

Scheme 351

Scheme 352

Scheme 353

Scheme 354

Scheme 355

Scheme 356

Scheme 357

Scheme 358

Scheme 359

Scheme 360

Scheme 361

Scheme 362

Scheme 363

Scheme 364

Scheme 365

Scheme 366

Scheme 367

Scheme 368

Scheme 369

Scheme 370

CONDITIONING FOR SENSOR TESTING

Scheme 371

Scheme 372

More articles — Engine Control System [1AR-FE] [Diagnostic Codes] [P0010-P0420]

Login / Signup

Enter the code

You have successfully logged in!