Engine Control System (Hatchback) (Diagnostic Codes P0010-P0354): Dia… — Engine Control System (Hatchback) (Diagnostic Codes P0010-P0354) — Testing & Diagnostics

INSPECTION PROCEDURE

HINT

If DTC P0010 is output, check the VVT system 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 stored even if the system returns to normal after a short time. Foreign objects are filtered out 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 545

Scheme 545: PROCEDURE

Scheme 546

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0011 or P0012 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 (CONTROL THE VVT LINEAR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the Oil Control Valve (OCV) 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-472430-S11548583282012051500000) . NG --> See step 5 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-472430-S28797856862012051500000) . 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 and ECT / 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 5 A --> See step 4
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-472430-S20399020192012051500000)
CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN OR JUMPED TEETH) Remove the cylinder head cover. Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover. Check that the timing marks on the camshaft timing sprocket and camshaft timing gear are facing upward as shown in the illustration. If not, turn the crankshaft 1 revolution (360°), then align the marks as above. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. TEXT IN ILLUSTRATION *a Timing Marks (at top center of each gear) *b Timing Mark (groove on crankshaft pulley) NG --> See step 10 OK: Go to next step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly. Refer to «INSPECTION»(ref-472637-S40514549162012051500000) . NG --> See step 11 OK: Go to next step
INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Check that the filter is not clogged. OK Filter is not clogged. TEXT IN ILLUSTRATION *1 Oil Control Valve Filter Reinstall the oil control valve filter. NG --> CLEAN OR REPLACE OIL CONTROL VALVE FILTER OK: Go to next step
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly. Refer to «REMOVAL»(ref-472632-S35133712482012051500000) . HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NEXT: Go to next step
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-472430-S32989237702012051500000)
ADJUST VALVE TIMING. Refer to «DISASSEMBLY»(ref-472632-S05362222412012051500000)
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-472637-S21870106452012051500000)
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-472430-S28797856862012051500000) . 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 and ECT / 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
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

HINT

The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
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-472430-S11548583282012051500000) .
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-472667-S24551283592012051500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 547

Scheme 547: PROCEDURE

INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-472637-S11655476302012051500000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 6 OK: Go to next step
INSPECT 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 C56-2 (+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 C56-1 (HA1A) - C51-23 (HA1A) Always Below 1 ohms C56-1 (HA1A) or C51-23 (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-472430-S28797856862012051500000) . 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 and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC is not output A DTC P0031, P0032 or P101D is output B B --> See step 7 A --> See step 8
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - NO. 1 INTEGRATION RELAY) Disconnect the air fuel ratio sensor connector. Remove the No. 1 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 C56-2 (+B) - 1E-4 Always Below 1 ohms C56-2 (+B) or 1E-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-472637-S15016501752012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-472430-S20399020192012051500000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-472664-S13195561802012051500000)

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-472430-S11548583282012051500000) .
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-472667-S24551283592012051500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 548

Scheme 548: PROCEDURE

INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-472637-S17488874952012051500000) . NG --> See step 6 OK: Go to next step
INSPECT 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 D145-2 (+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
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 D145-1 (HT1B) - C51-22 (HT1B) Always Below 1 ohms D145-1 (HT1B) or C51-22 (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-472430-S28797856862012051500000) . 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 and ECT / 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 7 A --> See step 8
CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - NO. 1 INTEGRATION RELAY) Disconnect the heated oxygen sensor connector. Remove the No. 1 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 D145-2 (+B) - 1D-11 Always Below 1 ohms D145-2 (+B) or 1D-11 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-472637-S27715994002012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-472430-S20399020192012051500000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-472664-S13195561802012051500000)

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 549

Scheme 549: 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 and ECT / 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 C63-1 (+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 C63-3 (VG) - C51-91 (VG) Always Below 1 ohms C63-2 (E2G) - C51-92 (E2G) Always Below 1 ohms C63-3 (VG) or C51-91 (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-472637-S17007728852012051500000) . Inspect the mass air flow meter, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(ref-472637-S27232163142012051500000) . 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 and ECT / Data List / MAF. Start the engine. Check that the MAF value changes when the engine is raced. OK The reading changes. HINT: Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C63-2 (E2G) - Body ground Always Below 1 ohms HINT: Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C63-2 (E2G) - C51-92 (E2G) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - NO. 1 INTEGRATION RELAY) Disconnect the mass air flow meter connector. Remove the No. 1 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 C63-1 (+B) - 1E-3 Always Below 1 ohms C63-1 (+B) or 1E-3 - 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-472637-S39355050022012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-472637-S39355050022012051500000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-472664-S13195561802012051500000)

Scheme 550

Scheme 550: 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	Either condition is met (2 trip detection logic): The intake air temperature change from the previous trip warm up to the following trip is small. The change in the intake air temperature after engine start is less than the threshold value.	Mass air flow meter

HINT

Scheme 551

Scheme 551: PROCEDURE

Scheme 552

READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / 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 4 (THA) and 5 (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 and ECT / 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) HINT: Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C63-4 (THA) - C51-90 (THA) Always Below 1 ohms C63-5 (E2) - C51-122 (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-472430-S20399020192012051500000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-472637-S39355050022012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the mass air flow meter connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / 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 HINT: Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C63-4 (THA) or C51-90 (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-472637-S39355050022012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

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 553

Scheme 553: PROCEDURE

Scheme 554

READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 and ECT / 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) HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C55-2 - C51-93 (THW) Always Below 1 ohms C55-1 - C51-94 (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-472430-S20399020192012051500000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-472637-S37519490272012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 C55-2 or C51-93 (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-472637-S37519490272012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

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 and ECT / 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 555

Scheme 555: 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 and ECT / 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 2 . 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 Tester Connection Condition Specified Condition C53-5 (VC) - C51-115 (VCTA) Always Below 1 ohms C53-6 (VTA) - C51-84 (VTA1) Always Below 1 ohms C53-4 (VTA2) - C51-83 (VTA2) Always Below 1 ohms C53-3 (E2) - C51-116 (ETA) Always Below 1 ohms C53-5 (VC) or C51-115 (VCTA) - Body ground Always 10 kohms or higher C53-6 (VTA) or C51-84 (VTA1) - Body ground Always 10 kohms or higher C53-4 (VTA2) or C51-83 (VTA2) - Body ground Always 10 kohms or higher 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 C53-5 (VC) - C53-3 (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
REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Replace the throttle with motor body assembly. Refer to «REMOVAL»(ref-472637-S16918943902012051500000) . HINT: Perform "Inspection After Repair" after replacing the throttle with motor body assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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-472430-S28797856862012051500000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read 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-472637-S11095454162012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

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

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 and ECT / 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

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 and ECT / 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% to +12%. 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 Fuel injector assembly Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 556

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 and ECT / 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 557

Scheme 557: PROCEDURE

Scheme 558

READ OUTPUT DTC (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 and ECT / Trouble Codes. Read 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 HINT: If any DTCs other than P0136, P0137, P0138 or P0139 are output, troubleshoot those DTCs first. B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 27 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) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) NG --> See step 24 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch to off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C51-22 (HT1B) - C51-103 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 26
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of heated oxygen sensor displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in fine gradations within the 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 more. NG --> See step 6 OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in fine gradations within the 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 more and less than 3.3 V OK Remains at more than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either less or more than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 12 OK --> See step 25
CHECK FOR EXHAUST GAS LEAK Inspect for exhaust gas leaks from the exhaust manifold sub-assembly and exhaust pipes. OK No gas leakage. HINT: Perform "Inspection After Repair" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 21 OK: Go to next step
INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 22 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 D145-1 (HT1B) - C51-22 (HT1B) Always Below 1 ohms D145-3 (OX1B) - C51-103 (OX1B) D145-4 (E2) - C51-135 (EX1B) D145-1 (HT1B) or C51-22 (HT1B) - Body ground Always 10 kohms or higher D145-3 (OX1B) or C51-103 (OX1B) - Body ground 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-472637-S27715994002012051500000) . NEXT: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). 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. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0136, P0137 or P0138 is output) A NORMAL (DTC is not output) B HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . B --> END A --> See step 23
REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-472637-S15016501752012051500000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NEXT: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). 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. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137 and P0138. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0136, P0137 or P0138 is output) B B --> See step 19 A --> END
CHECK FOR EXHAUST GAS LEAK Inspect for exhaust gas leaks from the exhaust manifold sub-assembly and exhaust pipes. OK No gas leakage. HINT: Perform "Inspection After Repair" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 21 OK: Go to next step
INSPECT HEATED OXYGEN SENSOR (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 C51-22 (HT1B) - C51-103 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0139). NEXT: 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. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0139. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. RESULT Result Proceed to ABNORMAL (DTC P0139 is output) A NORMAL (DTC is not output) B B --> See step 20 A --> See step 19
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-472637-S27715994002012051500000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-472430-S20399020192012051500000)
REPAIR OR REPLACE EXHAUST GAS LEAK POINT. Refer to «COMPONENTS»(ref-472658-S39672204832012051500000)
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-472637-S27715994002012051500000)
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-472637-S15016501752012051500000)
REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-472637-S27715994002012051500000)
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-472667-S30791880442012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-472430-S32989237702012051500000)

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

HINT

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

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.

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

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.

Scheme 559

Scheme 559: PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P0300, P0301, P0302, P0303 and/or P0304 are output A DTC P0300, P0301, P0302, P0303 and/or P0304 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303 and P0304 are output, troubleshoot those DTCs first. B --> See step 41 A: Go to next step
CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «COMPONENTS»(ref-472640-S12946626602012051500000) . OK PCV valve and hose are correctly connected and are not damaged. NG --> See step 40 OK: Go to next step
READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
READ VALUE USING TECHSTREAM (CATALYST OT MF F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Techstream Display Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (PROHIBIT THE CATALYST OT MISFIRE PREVENT F/C) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and the engine is either idling or being revved within 3000 RPM. NEXT: Go to next step
READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) Enter the following menus: Powertrain / Engine and ECT / Data List / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count and Cylinder #4 Misfire Count. Start the engine and allow the engine to idle. Read each value for Cylinder #1 Misfire Count to Cylinder #4 Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform following steps below and then check the misfire counts again. Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM And Misfire Load)" procedures above. Read the Cylinder #1 Misfire Count to Cylinder #4 Misfire Count or DTCs displayed on the Techstream. RESULT Result Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data record of the engine coolant temperature is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 17 A: Go to next step
INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-472666-S33826961832012051500000) . HINT: Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 35 OK: Go to next step
CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-472666-S33826961832012051500000) . HINT: If the result of the spark test is normal, proceed to the next step. Perform "Inspection After Repair" after replacing the No. 1 ignition coil or the spark plug. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NEXT: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 10»(ref-472632-S09103853022012051500000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
INSPECT ECM TERMINAL VOLTAGE (#10, #20, #30 AND/OR #40) Disconnect the ECM 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 C51-20 (#10) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-17 (#20) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-18 (#30) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-19 (#40) - C51-51 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 37 OK: Go to next step
CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-472654-S32358284032012051500000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 36 OK: Go to next step
CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-472670-S26578681922012051500000) . OK No leaks from intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-472665-S28429884492012051500000) . NG --> See step 32 OK: Go to next step
READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 39 OK: Go to next step
READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 27 OK: Go to next step
CHECK VALVE TIMING See step 5 OK --> See step 27 NG --> See step 38
CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-472670-S26578681922012051500000) . OK No leaks from intake system. HINT: Perform "Inspection After Repair" after repairing or replacing the intake system. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-472665-S28429884492012051500000) . NG --> See step 32 OK: Go to next step
READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 39 OK: Go to next step
READ VALUE USING TECHSTREAM (MAF) See step 6 NG --> See step 27 OK: Go to next step
CHECK VALVE TIMING See step 5 NG --> See step 38 OK: Go to next step
INSPECT SPARK PLUG Inspect the spark plug of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-472666-S33826961832012051500000) . HINT: Perform "Inspection After Repair" after replacing the spark plug. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 35 OK: Go to next step
CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-472666-S33826961832012051500000) . HINT: If the result of the spark test is normal, proceed to the next step. Perform "Inspection After Repair" after replacing the No. 1 ignition coil or the spark plug. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NEXT: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 10»(ref-472632-S09103853022012051500000) . HINT: Perform "Inspection After Repair" after repairing or replacing the engine assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
INSPECT ECM TERMINAL VOLTAGE (#10, #20, #30 AND/OR #40) Disconnect the ECM 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 C51-20 (#10) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-17 (#20) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-18 (#30) - C51-51 (E01) Ignition switch ON 11 to 14 V C51-19 (#40) - C51-51 (E01) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 37 OK: Go to next step
CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER Check the fuel injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-472654-S32358284032012051500000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> See step 36 OK: Go to next step
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR CONNECTION) Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(ref-472421-S25440727512012051500000) . HINT: Repair any problems. NEXT: Go to next step
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-472430-S28797856862012051500000) . 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. Warm up the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or P0304. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (P0300, P0301, P0302, P0303 or P0304 output) A NORMAL (No DTC output) B B --> END A: Go to next step
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) See step 3 NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-472637-S39355050022012051500000) . HINT: If the results of the inspections performed in steps 15 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter. Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NEXT: Go to next step
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-472430-S28797856862012051500000) . 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. Warm up the engine. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303 or P0304. Check the DTC judgment result. RESULT Result Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303 or P0304 output) B B --> See step 34 A --> END
CHECK FUEL LINE Check the fuel lines for leaks or blockage. HINT: Perform "Inspection After Repair" after replacing the fuel pump. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . NG --> REPAIR OR REPLACE FUEL LINE OK --> See step 33
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-472654-S24850386012012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-472637-S09541399742012051500000)
REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-472654-S11332023112012051500000)
GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-472664-S14220510872012051500000)
ADJUST VALVE TIMING. Refer to «DISASSEMBLY»(ref-472632-S05362222412012051500000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-472637-S37519490272012051500000)
REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-472640-S23620704232012051500000)
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-472430-S32989237702012051500000)

HINT

Scheme 560

Scheme 560: 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 and ECT / 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 P10-2 - P10-1 Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Knock Sensor) NG --> See step 4 OK: Go to next step
INSPECT KNOCK SENSOR Inspect the knock sensor. Refer to «INSPECTION»(ref-472637-S42249395822012051500000) . HINT: Perform "Inspection After Repair" after replacing the knock sensor. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . 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 Tester Connection Condition Specified Condition P10-2 - C51-123 (KNK1) Always Below 1 ohms P10-1 - C51-124 (EKNK) Always Below 1 ohms P10-2 or C51-123 (KNK1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-472430-S20399020192012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-472637-S39394276162012051500000)

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 sensor. Installation condition of the camshaft. Connection of the camshaft position sensor connector.
If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical systems.
Check the engine speed. The engine speed can be checked by using a Techstream. To check, follow the operation below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. The engine speed may be indicated as zero despite the engine revolving 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.
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 561

Scheme 561: PROCEDURE

READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect a Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / 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 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 Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-472637-S38282223682012051500000) . 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 Tester Connection Condition Specified Condition C52-1 - C51-78 (NE+) Always Below 1 ohms C52-2 - C51-110 (NE-) Always Below 1 ohms C52-1 or C51-78 (NE+) - Body ground Always 10 kohms or higher C52-2 or C51-110 (NE-) - Body ground Always 10 kohms or higher 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 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-472637-S39257408642012051500000) . 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-472430-S28797856862012051500000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to DTC is not output (No pending DTCs 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-472430-S20399020192012051500000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-472637-S39257408642012051500000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-472637-S21407210312012051500000)
REPLACE CRANKSHAFT. Refer to «DISASSEMBLY»(ref-472632-S05362222412012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

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 562

Scheme 562: PROCEDURE

INSPECT CAMSHAFT POSITION SENSOR Inspect the camshaft position sensor. Refer to «INSPECTION»(ref-472637-S26585739892012051500000) . NG --> See step 8 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the camshaft 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 C54-1 - C51-82 (VV1+) Always Below 1 ohms C54-2 - C51-110 (NE-) Always Below 1 ohms C54-1 or C51-82 (VV1+) - Body ground Always 10 kohms or higher C54-2 or C51-110 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) Check the camshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
CHECK VALVE TIMING See step 5 NG --> See step 10 OK: Go to next step
CHECK CAMSHAFT (TIMING ROTOR) Check the timing rotor of the camshaft. OK Camshaft timing rotor does not have any cracks or deformation. NG --> See step 11 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-472637-S32659756922012051500000) . NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P0340) 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-472430-S28797856862012051500000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to DTC is not output (No pending DTCs output) A DTC P0340 is output B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-472637-S32659756922012051500000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-472637-S07977398842012051500000)
ADJUST VALVE TIMING. Refer to «DISASSEMBLY»(ref-472632-S05362222412012051500000)
REPLACE CAMSHAFT. Refer to «REMOVAL»(ref-472632-S35133712482012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)

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

HINT

Scheme 563

Scheme 563: PROCEDURE

CHECK HARNESS AND CONNECTOR (NO. 1 IGNITION COIL - BODY GROUND) Disconnect the No. 1 ignition coil connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-4 (GND) - Body ground Always Below 1 ohms C48-4 (GND) - Body ground Always Below 1 ohms C49-4 (GND) - Body ground Always Below 1 ohms C50-4 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT TERMINAL VOLTAGE (POWER SOURCE OF NO. 1 IGNITION COIL) Disconnect the No. 1 ignition coil 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 C47-1 (+B) - C47-4 (GND) Ignition switch ON 11 to 14 V C48-1 (+B) - C48-4 (GND) Ignition switch ON 11 to 14 V C49-1 (+B) - C49-4 (GND) Ignition switch ON 11 to 14 V C50-1 (+B) - C50-4 (GND) Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Ignition Coil) NG --> See step 5 OK: Go to next step
CHECK HARNESS AND CONNECTOR (NO. 1 IGNITION COIL - ECM) Disconnect the No. 1 ignition coil connectors. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-2 (IGF) - C51-102 (IGF1) Always Below 1 ohms C48-2 (IGF) - C51-102 (IGF1) Always Below 1 ohms C49-2 (IGF) - C51-102 (IGF1) Always Below 1 ohms C50-2 (IGF) - C51-102 (IGF1) Always Below 1 ohms C47-3 (IGT1) - C51-57 (IGT1) Always Below 1 ohms C48-3 (IGT2) - C51-56 (IGT2) Always Below 1 ohms C49-3 (IGT3) - C51-55 (IGT3) Always Below 1 ohms C50-3 (IGT4) - C51-54 (IGT4) Always Below 1 ohms C47-2 (IGF) or C51-102 (IGF1) - Body ground Always 10 kohms or higher C48-2 (IGF) or C51-102 (IGF1) - Body ground Always 10 kohms or higher C49-2 (IGF) or C51-102 (IGF1) - Body ground Always 10 kohms or higher C50-2 (IGF) or C51-102 (IGF1) - Body ground Always 10 kohms or higher C47-3 (IGT1) or C51-57 (IGT1) - Body ground Always 10 kohms or higher C48-3 (IGT2) or C51-56 (IGT2) - Body ground Always 10 kohms or higher C49-3 (IGT3) or C51-55 (IGT3) - Body ground Always 10 kohms or higher C50-3 (IGT4) or C51-54 (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 the DTCs. Refer to «DTC CHECK / CLEAR»(ref-472430-S28797856862012051500000) . Shuffle the arrangement of the ignition coils (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 and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to Same DTC output A Different ignition coil DTC output B HINT: Perform "Inspection After Repair" after replacing the No. 1 ignition coil. Refer to «INITIALIZATION»(ref-472430-S30408654192012051500000) . B --> See step 6 A --> See step 7
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - NO. 1 IGNITION COIL) Disconnect the No. 1 ignition coil connectors. Remove the No. 1 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 C47-1 (+B) - 1E-2 Always Below 1 ohms C48-1 (+B) - 1E-2 Always Below 1 ohms C49-1 (+B) - 1E-2 Always Below 1 ohms C50-1 (+B) - 1E-2 Always Below 1 ohms C47-1 (+B) or 1E-2 - Body ground Always 10 kohms or higher C48-1 (+B) or 1E-2 - Body ground Always 10 kohms or higher C49-1 (+B) or 1E-2 - Body ground Always 10 kohms or higher C50-1 (+B) or 1E-2 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
REPLACE NO. 1 IGNITION COIL. Refer to «REMOVAL»(ref-472637-S09541399742012051500000)
REPLACE ECM. Refer to «REMOVAL»(ref-472637-S11095454162012051500000)
CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-472664-S13195561802012051500000)

Engine Control System (Hatchback) (Diagnostic Codes P0010-P0354): Diagnosis Toyota Yaris III

INSPECTION PROCEDURE

Scheme 545

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Scheme 563

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