Engine Control System (2TR-FE) (Diagnostic Codes (P0010 - P0441)): Diagnosis Toyota Tacoma II рестайлинг

INSPECTION PROCEDURE

HINT

1. If DTC P0010 is output, check the VVT system circuit.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

1. DTC 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.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 331

Scheme 332

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to 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 11 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Turn the A/C switch on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1). Check the engine speed while operating the camshaft timing oil control valve assembly 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, VVT Change Angle #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-554492-S25753946292013052000000) . NG --> See step 4 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . 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 4 A --> See step 12
4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover. Refer to «REMOVAL - Step 42»(ref-554438-S06700512992013052000000) . 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 gears are aligned as shown in the illustration. OK Timing marks on the camshaft timing gears are aligned as shown in illustration. TEXT IN ILLUSTRATION *a Timing Mark NG --> See step 9 OK: Go to next step
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Inspect the camshaft timing oil control valve assembly. Refer to «INSPECTION»(ref-554500-S05763312332013052000000) . NG --> See step 10 OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY - Step 44»(ref-554438-S22879647252013052000000) . Check that the filter is not clogged. OK Filter is not clogged. TEXT IN ILLUSTRATION *1 Oil Control Valve Filter NG --> CLEAN OR REPLACE OIL CONTROL VALVE FILTER OK: Go to next step
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Replace the camshaft timing gear assembly. Refer to «DISASSEMBLY - Step 1»(ref-554438-S22879647252013052000000) . HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . 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
9. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-554438-S37038360492013052000000)
10. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «DISASSEMBLY»(ref-554438-S31926269262013052000000)
11. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-554492-S12437688692013052000000)
12. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
13. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

HINT

1. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
2. Read freeze frame data using the Techstream. 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

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Refer to "Data List / Active Test" [A/F Heater Duty #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-554492-S25753946292013052000000) .
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. 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-554497-S20178573232013052000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 333

Scheme 334

1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(ref-554445-S21476809812013052000000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 8 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR) Disconnect the air fuel ratio sensor connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A4-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Air Fuel Ratio Sensor) NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the A4 air fuel ratio sensor connector. Disconnect the E19 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A4-1 (HA1A) or E19-6 (HA1A) Always Below 1 ohms A4-1 (HA1A) or E19-6 (HA1A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0031, P0032 or P101D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . 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 9
5. INSPECT AIR FUEL RATIO SENSOR HEATER RELAY (A/F HEATER RELAY) Remove the A/F HEATER 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 3 - 5 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE A/F HEATER RELAY OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - A/F HEATER RELAY) Disconnect the A4 air fuel ratio sensor connector. Remove the A/F HEATER relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition A4-2 (+B) - 3 (A/F HEATER relay holder) Always Below 1 ohms A4-2 (+B) or 3 (A/F HEATER relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
7. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
8. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-554445-S32935915532013052000000)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-554495-S33440798602013052000000)

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

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. When the values for the Data List items O2 Heater Curr Val B1S2 is not 0 A, the heater is on.
3. Refer to "Data List / Active Test" [O2 Heater B1S2 and O2 Heater Curr Val B1S2. Refer to «DATA LIST / ACTIVE TEST»(ref-554492-S25753946292013052000000) .
4. Sensor 1 refers to the sensor closest to the engine assembly.
5. Sensor 2 refers to the sensor farthest away from the engine assembly.
6. 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-554497-S20178573232013052000000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 335

1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-554445-S33758264382013052000000) . HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 7 OK: Go to next step
2. 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 H3-2 (+B) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the H3 heated oxygen sensor connector. Disconnect the E19 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H3-1 (HT1B) - E19-18 (HT1B) Always Below 1 ohms H3-1 (HT1B) or E19-18 (HT1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0037, P0038, P0141 or P102D) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . 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 6 A --> See step 8
5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - EFI MAIN RELAY) Disconnect the H3 heated oxygen sensor 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 H3-2 (+B) - 3 (EFI MAIN relay holder) Always Below 1 ohms H3-2 (+B) or 3 (EFI MAIN relay holder) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
6. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
7. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-554445-S03398807412013052000000)
8. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
9. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-554495-S33440798602013052000000)

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

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

Scheme 336

1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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
2. 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 M1-1 (+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
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the M1 mass air flow meter connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-3 (VG) - E17-13 (VG) Always Below 1 ohms M1-2 (E2G) - E17-7 (E2G) Always Below 1 ohms M1-3 (VG) or E17-13 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, referring to the On-vehicle Inspection for mass air flow meter. Refer to «ON-VEHICLE INSPECTION»(ref-554500-S31926274312013052000000) . Inspect the mass air flow meter, referring to the Inspection for mass air flow meter. Refer to «INSPECTION»(ref-554500-S26052449822013052000000) . 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-554492-S04197663382013052000000) . NG --> REPLACE MASS AIR FLOW METER OK --> See step 8
5. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the M1 mass air flow meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-2 (E2G) - Body ground Always Below 1 ohms HINT: Perform "Inspection After Repair" after replacing the mass air flow meter. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 6 OK --> REPLACE MASS AIR FLOW METER
6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the M1 mass air flow meter connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-2 (E2G) - E17-7 (E2G) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - EFI MAIN RELAY) Disconnect the M1 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 M1-1 (+B) - 3 (EFI MAIN relay) Always Below 1 ohms M1-1 (+B) or 3 (EFI MAIN relay) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
8. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
9. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-554495-S33440798602013052000000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

Scheme 337

1. The intake air temperature sensor, mounted on the mass air flow meter, monitors the intake air temperature sensor. 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 sensor 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 1above).
2. The intake air temperature sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
3. Resistor R and the intake air temperature sensor are connected in series. When the resistance value of the intake air temperature sensor changes, the voltage at terminal THA also varies accordingly. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.

HINT

Read freeze frame data using the Techstream. 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. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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 338

Scheme 339

1. READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard value Same value 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 4 C --> See step 7 A: Go to next step
2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the mass air flow meter connector. Connect terminals M1-4 (THA) and M1-5 (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-554492-S04197663382013052000000) . NG --> See step 3 OK --> REPLACE MASS AIR FLOW METER
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the M1 mass air flow meter connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-4 (THA) - E17-12 (THA) Always Below 1 ohms M1-5 (E2) - E17-11(ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the M1 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-554492-S04197663382013052000000) . NG --> See step 5 OK --> REPLACE MASS AIR FLOW METER
5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the M1 mass air flow meter connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-4 (THA) or E17-12 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
6. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. If DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).

Scheme 340

Scheme 341

1. READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 75°C and 100°C (167°F and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A Higher than 135°C (275°F) B Between 75°C and 100°C (167°F 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 4 C --> See step 6 A: Go to next step
2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the engine coolant temperature sensor connector. Connect terminals E2-1 and E2-2 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 or connector (to Engine Coolant Temperature Sensor) HINT: Perform "Inspection After Repair" after replacing the engine coolant temperature sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 3 OK --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR
3. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the E2 engine coolant temperature sensor connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E2-2 - E17-18 (THW) Always Below 1 ohms E2-1 - E17-17 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the E2 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-554492-S04197663382013052000000) . NG --> See step 5 OK --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR
5. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the E2 engine coolant temperature sensor connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E2-2 or E17-18 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
8. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

HINT

1. If any of DTCs P0115, P0117, P0118 or P0125 are stored simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. 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

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

Scheme 342

1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position No. 2. Check the values displayed on the Techstream. RESULT When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V E2 circuit open 0 to 0.2 V, or 4.5 to 4.98 V 2.1 to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 2.1 to 3.1 V (Fail-safe) VTA1 circuit open or shorted to ground 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V 0.6 to 1.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 4.98 V VTA2 circuit open or shorted to ground 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.6 to 4.98 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121 is stored when the voltages output from VTA1 and VTA2 are not consistent with the characteristics of the sensors. Therefore, check the Freeze Frame Data when this DTC is output. Use the following formula to confirm relative fluctuations in voltage. Characteristic sensor output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle Position No. 2 If DTC P0121 is output, proceed to the "Check Harness and Connector (Throttle Position Sensor - ECM)" B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the T1 throttle body assembly connector. Disconnect the E17 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition T1-5 (VC) - E17-10 (VCTA) Always Below 1 ohms T1-6 (VTA) - E17-3 (VTA1) Always Below 1 ohms T1-4 (VTA2) - E17-4 (VTA2) Always Below 1 ohms T1-3 (E2) - E17-9 (ETA) Always Below 1 ohms T1-5 (VC) or E17-10 (VCTA) - Body ground Always 10 kohms or higher T1-6 (VTA) or E17-3 (VTA1) - Body ground Always 10 kohms or higher T1-4 (VTA2) or E17-4 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM (VC VOLTAGE) Disconnect the T1 throttle 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 E17-10 (VCTA) - E17-9 (ETA) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) NG --> See step 6 OK: Go to next step
4. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(ref-554500-S28415094862013052000000) . HINT: Perform "Inspection After Repair" after replacing the throttle body assembly. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . Start the engine. Drive the vehicle in accordance with the driving pattern in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the output DTCs. RESULT Result Proceed to P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 is output A DTC is not output B B --> END A --> See step 6
6. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

HINT

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

HINT

1. 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.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

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

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

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.
6. Perform the Active Test operation with the engine idling (press the -12.5 or 12.5 button to change the fuel injection volume).
7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the Techstream. HINT: The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%. 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. Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 (Air fuel ratio) 12.5% Rich Below 3.1 V -12.5% Lean Higher than 3.4 V O2S B1S2 (Heated oxygen) 12.5% Rich Higher than 0.55 V -12.5% 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 Output Voltage Heated Oxygen Sensor 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 343

Scheme 344

Scheme 345

1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / 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

1. Sensor 1 refers to the sensor closest to the engine assembly.
2. Sensor 2 refers to the sensor farthest away from the engine assembly.
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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 346

Scheme 347

1. READ OUTPUT DTC (DTC P0136, P0137, P0138, P0139 AND P013A) 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 P0138 is output A DTC P0137 is output B DTC P0136 is output C DTC P0139 or P013A is output D DTC P0136, P0137 or P0138 and other DTCs are output E HINT: If any DTCs other than P0136, P0137, P0138, P0139 and P013A are output, troubleshoot those DTCs first. B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 21 A: Go to next step
2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the H3 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) HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 20 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the ignition switch off and wait for 5 minutes or more. Disconnect the E19 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Conditions E19-18 (HT1B) - E19-13 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 24
4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) 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 for A/F Sensor. 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: The Control the Injection Volume for A/F Sensor operation lowers or increases the fuel injection volume by 12.5%. 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. Standard voltage Fluctuates between 0.4 V or less and 0.55 V or more. NG --> See step 6 OK: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) 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 / Active Test / Control the Injection Volume for A/F Sensor. 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: The Control the Injection Volume for A/F Sensor operation lowers or increases the fuel injection volume by 12.5%. 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 OK 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 12 OK --> See step 23
6. CHECK FOR EXHAUST GAS LEAKS Check for exhaust gas leaks. OK No exhaust gas leaks. HINT: Perform "Inspection After Repairs" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION»(ref-554445-S33758264382013052000000) . HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 20 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the H3 heated oxygen sensor connector. Disconnect the E19 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H3-1 (HT1B) - E19-18 (HT1B) Always Below 1 ohms H3-3 (OX1B) - E19-13 (OX1B) Always Below 1 ohms H3-4 (E2) - E19-14 (EX1B) Always Below 1 ohms H3-1 (HT1B) or E19-18 (HT1B) - Body ground Always 10 kohms or higher H3-3 (OX1B) or E19-13 (OX1B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-554445-S03398807412013052000000) . HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NEXT: Go to next step
10. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the 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 (P0136, P0137 or P0138 is output) A NORMAL (No DTC output) B HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . B --> END A --> See step 19
12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-554445-S32935915532013052000000) . HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0136, P0137 and P0138). NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137 OR P0138) Connect the Techstream to the DLC3. Turn the 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 (P0136, P0137 or P0138 is output) A NORMAL (No DTC output) B HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . B --> END A --> See step 20
15. CHECK FOR EXHAUST GAS LEAKS Check for exhaust gas leaks. OK No exhaust gas leaks. HINT: Perform "Inspection After Repairs" after repairing or replacing the exhaust system. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
16. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Disconnect the E19 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E19-18 (HT1B) - E19-13 (OX1B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
17. PERFORM CONFIRMATION DRIVING PATTERN Perform the Confirmation Driving Pattern (P0139 and P013A). NEXT: Go to next step
18. READ DTC OUTPUT (DTC P0139 OR P013A 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 and P013A. 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 (P0139 or P013A is output) A NORMAL (No DTC output) B HINT: Perform "Inspection After Repair" after replacing the heated oxygen sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . B --> See step 22 A --> See step 20
19. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-554445-S32935915532013052000000)
20. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-554445-S03398807412013052000000)
21. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-554492-S12437688692013052000000)
22. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
23. 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-554497-S38981217262013052000000)
24. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

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

HINT

1. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
2. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. 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

1. Sensor 1 refers to the sensor closest to the engine assembly.
2. Sensor 2 refers to the sensor farthest away from the engine assembly.
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
4. 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.
5. 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

1. Check the "Fuel Cut Elps Time" value in the Data List or the freeze frame data which were present when the malfunction occurred. If the value is more than 0 seconds, a high engine speed (8000 RPM or more) has occurred in the past. Since the misfire may be caused by valve rocker arm detaching due to an extremely high engine speed, check that the valve rocker arms are properly attached. Refer to «REMOVAL»(ref-554438-S26635471572013052000000) .
2. By clearing the DTC, "Fuel Cut Elps Time" will be cleared.
3. If any DTCs other than the misfire DTCs are output, troubleshoot those DTCs first.
4. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
5. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the freeze frame data.
6. If the misfire still cannot be reproduced even though the conditions stored in the freeze frame data have been duplicated, one of the following factors is considered to be a possible cause of the problem: The fuel tank is low. Improper fuel is used. The spark plugs have been contaminated. The problem is complex.
7. After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to #4).
8. Be sure to confirm that no misfiring cylinder DTCs are stored again by conducting the confirmation driving pattern, after repairs.
9. In the event of DTC P0300 being present, perform the following operations: Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream or scan tool. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not stored.
10. 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).
11. When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfires have occurred only while warming up the engine.
12. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs detection.

HINT

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

Scheme 348

Scheme 349

1. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) Disconnect the ECM connector. Measure the resistance between the terminals of the ECM connector. Standard Resistance Tester Connection Condition Specified Condition E17-6 (KNK1) - E17-5 (EKNK) 20°C (68°F) 120 to 280 kohms TEXT IN ILLUSTRATION *a Rear view of wire harness connector (to ECM) NG --> See step 3 OK: Go to next step
2. INSPECT ECM (KNK1 VOLTAGE) Disconnect the ECM connector. Turn the ignition switch to ON. Measure the voltage between the ECM terminals. Standard Voltage Tester Connection Switch Condition Specified Condition E17-6 (KNK1) - E17-5 (EKNK) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Component with harness connected (ECM) NG --> See step 5 OK --> See step 4
3. INSPECT KNOCK SENSOR Inspect the knock sensor. Refer to «INSPECTION»(ref-554500-S16318050042013052000000) . HINT: Perform "Inspection After Repair" after replacing the knock sensor. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> See step 6 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - KNOCK SENSOR)
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)
5. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
6. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-554500-S04605648202013052000000)

HINT

1. If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical informatioin.
2. 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
3. Check the engine speed. The engine speed can be checked by using the Techstream. To check, follow the operation below: (a) Connect the Techstream to the DLC3. (b) Start the engine. (c) Turn the Techstream on. (d) 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 voltage output is insufficient.
4. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 350

1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 10
2. INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE) Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-554500-S16574895652013052000000) . NG --> See step 8 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the C5 crankshaft position sensor connector. Disconnect the E18 ECM connector. Check the resistance. Standard Resistance Tester Connection Condition Specified Condition C5-1 (NE) - E18-12 (NE+) Always Below 1 ohms C5-2 (NE-) - E18-5 (NE-) Always Below 1 ohms C5-1 (NE) or E18-12 (NE+) - Body ground Always 10 kohms or higher C5-2 (NE-) or E18-5 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR OK: Go to next step
5. CHECK NO. 2 CRANKSHAFT TIMING SPROCKET (TEETH OF CRANK ANGLE SENSOR PLATE) Check the teeth of the crank angle sensor plate. OK Sensor plate does not have any cracks or deformation. NG --> REPLACE NO. 2 CRANKSHAFT TIMING SPROCKET OK: Go to next step
6. REPLACE CRANK POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-554500-S26812383102013052000000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335 AND/OR P0339) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-554492-S07547393792013052000000) . 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. Enter the following menus: Powertrain / Engine and ECT / 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 9 A --> END
8. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-554500-S26812383102013052000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-554492-S41595235032013052000000)

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. If no problem is found through this diagnostic troubleshooting procedure, there may be a mechanical problem with the engine.

Scheme 351

1. INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE) Inspect the camshaft position sensor. Refer to «INSPECTION»(ref-554500-S15330651272013052000000) . NG --> See step 8 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Disconnect the C1 camshaft position sensor connector. Disconnect the E18 ECM connector. Check the resistance. Standard Resistance Tester Connection Condition Specified Condition C1-1 - E18-11 (G2) Always Below 1 ohms C1-2 - E18-5 (NE-) Always Below 1 ohms C1-1 or E18-11 (G2) - Body ground Always 10 kohms or higher C1-2 or E18-5 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) Check the camshaft position sensor installation. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR OK: Go to next step
4. CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate teeth do not have any cracks or deformation. HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> REPLACE CAMSHAFT TIMING GEAR ASSEMBLY OK: Go to next step
5. CHECK VALVE TIMING Check the valve timing See step 4 . NG --> See step 10 OK: Go to next step
6. REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-554500-S32538220112013052000000) . NEXT: Go to next step
7. 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-554492-S07547393792013052000000) . 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 Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P0340 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 9
8. REPLACE CAMSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-554500-S32538220112013052000000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)
10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-554438-S37038360492013052000000)

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

HINT

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

Scheme 352

1. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) Disconnect the I1, I2, I3 and I4 ignition coil assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I1-4 (GND) - Body ground Always Below 1 ohms I2-4 (GND) - Body ground Always Below 1 ohms I3-4 (GND) - Body ground Always Below 1 ohms I4-4 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT 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 I1-1 (+B) - I1-4 (GND) Ignition switch ON 11 to 14 V I2-1 (+B) - I2-4 (GND) Ignition switch ON 11 to 14 V I3-1 (+B) - I3-4 (GND) Ignition switch ON 11 to 14 V I4-1 (+B) - I4-4 (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 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the I1, I2, I3 and I4 ignition coil assembly connectors. Disconnect the E20 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I1-2 (IGF) - E20-10 (IGF1) Always Below 1 ohms I2-2 (IGF) - E20-10 (IGF1) Always Below 1 ohms I3-2 (IGF) - E20-10 (IGF1) Always Below 1 ohms I4-2 (IGF) - E20-10 (IGF1) Always Below 1 ohms I1-3 (IGT1) - E20-1 (IGT1) Always Below 1 ohms I2-3 (IGT2) - E20-2 (IGT2) Always Below 1 ohms I3-3 (IGT3) - E20-3 (IGT3) Always Below 1 ohms I4-3 (IGT4) - E20-4 (IGT4) Always Below 1 ohms I1-2 (IGF) or E20-10 (IGF1) - Body ground Always 10 kohms or higher I2-2 (IGF) or E20-10 (IGF1) - Body ground Always 10 kohms or higher I3-2 (IGF) or E20-10 (IGF1) - Body ground Always 10 kohms or higher I4-2 (IGF) or E20-10 (IGF1) - Body ground Always 10 kohms or higher I1-3 (IGT1) or E20-1 (IGT1) - Body ground Always 10 kohms or higher I2-3 (IGT2) or E20-2 (IGT2) - Body ground Always 10 kohms or higher I3-3 (IGT3) or E20-3 (IGT3) - Body ground Always 10 kohms or higher I4-3 (IGT4) or E20-4 (IGT4) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (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-554492-S07547393792013052000000) . 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 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 ignition coil assembly. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . B --> REPLACE IGNITION COIL ASSEMBLY A --> See step 6
5. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - IGNITION SWITCH) Disconnect the I1, I2, I3 and I4 ignition coil assembly connectors. Disconnect the I7 ignition switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I1-1 (+B) - I7-6 (IG2) Always Below 1 ohms I2-1 (+B) - I7-6 (IG2) Always Below 1 ohms I3-1 (+B) - I7-6 (IG2) Always Below 1 ohms I4-1 (+B) - I7-6 (IG2) Always Below 1 ohms I1-1 (+B) or I7-6 (IG2) - Body ground Always 10 kohms or higher I2-1 (+B) or I7-6 (IG2) - Body ground Always 10 kohms or higher I3-1 (+B) or I7-6 (IG2) - Body ground Always 10 kohms or higher I4-1 (+B) or I7-6 (IG2) - Body ground Always 10 kohms or higher HINT: Perform "Inspection After Repair" after replacing the ignition coil assembly. Refer to «INITIALIZATION»(ref-554492-S04197663382013052000000) . NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE IGNITION COIL ASSEMBLY
6. REPLACE ECM. Refer to «REMOVAL»(ref-554500-S35831878022013052000000)

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

HINT

1. By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the air fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

HINT

1. By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the air fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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 353

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

HINT

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

Scheme 354

HINT

1. If malfunction cannot be found when troubleshooting DTC P0420, a lean or rich abnormality may be the cause. Perform troubleshooting by following the inspection procedure for P0171 (System Too Lean) and P0172 (System Too Rich).
2. Sensor 1 refers to the sensor closest to the engine assembly.
3. Sensor 2 refers to the sensor farthest away from the engine assembly.
4. 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.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to the EVAP Inspection Procedure. Refer to EVAP System .

Refer to EVAP System. Refer to EVAP System .