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Engine Control System (1AR-FE) (Diagnostic Codes (P1604 - U0101) & Circuit Tests): Diagnosis Toyota Highlander II рестайлинг

Testing & Diagnostics 49 illustrations ~26099 words

INSPECTION PROCEDURE

HINT

  1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P1604 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as starting difficulty. As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
  2. If any other DTCs are output, perform troubleshooting for those DTCs first.
  3. When the Data List item "Immobiliser Fuel Cut" is ON, the engine cannot be started.
  4. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
  5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) .
  6. When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
  7. Try to start the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and compare it with the freeze frame data.
  8. If the malfunction does not reoccur, carefully check the vehicle conditions from when the malfunction occurred using freeze frame data.
  9. When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.
  10. If the same inspection or replacement procedure appears 2 times when performing an inspection procedure, it is not necessary to repeat the procedure the second time.

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  1. Malfunction Recurrence and Inspection Areas Freeze frame data exists, but the malfunction (starting difficulty) has not reoccurred and the malfunction conditions are unknown. The engine speed recorded in the freeze frame data is 0 RPM (the engine does not crank). HINT: One of the following problems may be present: battery depletion, excess engine friction, a starter malfunction or a crankshaft position sensor malfunction. If the battery voltage is less than 6 V during cranking, there is a high probability that engine friction is abnormal. If the battery voltage drops to 5 V or less when starting the engine, the battery may be malfunctioning. If the battery voltage fluctuates while cranking the engine, it can be concluded that cranking is being performed. When the engine speed is 0 RPM, the crankshaft position sensor and/or an ECM may be malfunctioning. All engine speeds recorded in the freeze frame data are between 60 and 250 RPM (the engine cranks but there is no combustion). HINT: If the engine speed is between 60 and 250 RPM (no initial combustion), there may be a wiring problem or a complete failure of an ignition or fuel system part. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and the engine may not be able to be started. The engine speed recorded in the freeze frame data is 250 RPM or higher (the initial combustion and starter turnoff timing is too late). HINT: If the engine speed is 250 RPM or higher (combustion occurs but the initial combustion and starter turnoff timing is too late), the fuel injection volume is often incorrect (too low or too high) and determining the cause of the malfunction is often difficult. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and engine starting trouble may occur. If Long FT #1 is incorrect, there may be a fuel supply problem due to the injectors or fuel pump being clogged, etc. If the engine cranking speed is too high, compression loss may have occurred due to carbon interfering with the valve operation. When the malfunction (starting difficulty) can be reproduced, or malfunction conditions are known, perform the following inspections ("Problem symptoms" and "Systems to inspect"): Problem symptoms The engine does not crank. HINT: The starter is normal if a noise that indicates the starter pinion gear is extending is heard. The battery may be fully depleted or there may be excess engine friction. The engine cranking speed is abnormal. HINT: If the engine cranking speed is too high (for example, 300 RPM or higher with no combustion), compression loss may have occurred because carbon interfered with valve operation, etc. There is no initial combustion. HINT: If there is no initial combustion, there is probably a wiring problem or an ignition or fuel system part malfunction. The engine stalls after starter turnoff. HINT: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the VVT may have a problem returning. The initial combustion and starter turnoff occur late. HINT: If the initial combustion and starter turnoff occur late, the fuel injection volume is probably incorrect (too low or too high). HINT: Causes of fuel system malfunctions according to conditions present at the time of the malfunction. When 2 to 3 minutes have elapsed after stopping the engine: Fuel pressure loss due to the pressure regulator failing to maintain the fuel pressure. When 15 to 120 minutes have elapsed after stopping the engine: Problem with injector fuel seal. When a long time has elapsed after stopping the engine: Pressure regulator is stuck open. Systems to inspect. Intake system Ignition system Fuel system
  2. INSPECTION FLOW Freeze frame data exists, but the malfunction (starting difficulty) has not reoccurred and the malfunction conditions are unknown. Freeze Frame Data Item Result Suspected Area Procedure Engine Speed 0 RPM (no engine cranking at all) Battery fully depleted Engine assembly (excess friction) Starter assembly Immobiliser system Crankshaft position sensor ECM 4 to 9 100 to 250 RPM (engine cranks but no initial combustion*1) Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system 10 to 14 250 RPM or higher (combustion occurs but initial combustion and starter turnoff*2 occur late) Engine assembly (compression loss) Fuel injection system Fuel pump control system 15 to 23 HINT: *1: First combustion after cranking begins. *2: Condition when engine speed increases and starter can be turned off. When the malfunction (starting difficulty) can be reproduced, or when malfunction conditions are known. Problem symptoms Problem Symptom Suspected Area Suspected Component Procedure The engine does not crank Battery malfunction Battery fully depleted 26 to 31 Starting system Starter (includes pinion gear wear or tooth damage) Starting system Immobiliser system Immobiliser system Engine assembly Engine assembly (excess friction) Drive plate wear or tooth damage Cranking speed too low Battery malfunction Battery fully depleted 32 to 34 Starting system Starter assembly Engine assembly Engine assembly (excess friction) Cranking speed too high Engine assembly Engine assembly (compression loss) There is no initial combustion Fuel supply problem Maintenance of fuel pressure by pressure regulator Fuel injector assembly leak Fuel leak from fuel line Fuel pump control system Fuel pump 35 to 50 Ignition system malfunction Spark plug Crankshaft position sensor Ignition coil Engine stalls after starter turnoff Air suction Intake system connections 51 to 57 Deposits in throttle body Throttle body VVT valve does not return properly Camshaft timing oil control valve assembly VVT system Mass air flow meter malfunction Mass air flow meter The initial combustion and starter turnoff occur late Engine coolant temperature sensor malfunction Engine coolant temperature sensor 58 to 71 Mass air flow meter malfunction Mass air flow meter Abnormal air fuel ratio learning value Air fuel ratio sensor Deviation from fuel injection characteristics Fuel injector assembly Wet-fouled or dry-fouled spark plug Spark plug Lack of fuel pressure Pressure regulator Fuel pump Fuel pump control system Systems to inspect Troubleshooting by System Suspected Area Suspected Component Procedure Fuel system troubleshooting A Abnormal air fuel ratio learning value Fuel injector assembly 91 to 98 99 to 106 Rough idling Crankshaft position sensor Abnormal fuel pressure Fuel Fuel leak from fuel line Fuel pump Pressure regulator Fuel system troubleshooting B Abnormal concentration of HC in surge tank Purge VSV system Fuel injector assembly 107 to 109 Fuel system troubleshooting C Injection signal system malfunction Fuel injector assembly Crankshaft position sensor Camshaft position sensor ECM 73 to 78 Intake system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 88 to 90 110 to 112 Ignition system troubleshooting Camshaft and/or crankshaft position sensor signal malfunction Crankshaft position sensor system (including sensor installation) Camshaft position sensor system (including sensor installation) ECM 79 to 87 113 to 121

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  1. CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA (IN ADDITION TO DTC P1604) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs and record the Freeze Frame Data. HINT: This freeze frame data shows the actual engine conditions when engine starting trouble occurred. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data. The fourth set of freeze frame data is the data recorded when the DTC is stored. RESULT Result Proceed to Only DTC P1604 is output A DTCs other than P1604 are output B B --> See step 122 A: Go to next step
  2. CHECK ENGINE IMMOBILISER SYSTEM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Immobiliser Fuel Cut. Read the value displayed on the Techstream. OK Immobiliser Fuel Cut is OFF HINT: If the engine is cranked immediately after reconnecting the battery cable (key verification for immobiliser system not completed), the engine cannot be started. Key verification needs to wait for several seconds after turning the ignition switch to ON. NG --> See step 123 OK: Go to next step
  3. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the problem symptoms cannot be reproduced and the malfunction conditions are unknown A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
  4. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Engine Speed Battery Voltage All 0 RPM (no engine cranking at all) Minimum voltage is less than 5 V Battery fully depleted A Minimum voltage is 5 V or higher Starter malfunction Crankshaft position sensor system Excess engine friction Immobiliser system ECM B 100 to 250 RPM (engine cranks but no initial combustion) - Fuel pump control system Ignition system Engine coolant temperature sensor Immobiliser system Fuel injection system C 250 RPM or higher (combustion occurs but initial combustion and starter turnoff occur late) - Engine assembly Fuel injection system Fuel pump control system D HINT: When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the Freeze Frame Data will be ON. If "Low Rev for Eng Start" is ON, proceed to E. *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine. *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items. Immobiliser Fuel Cut Engine Speed (Starter OFF) Shift SW Status (R, D Range) B --> See step 5 C --> See step 10 D --> See step 15 E --> See step 51 A --> CHARGE OR REPLACE BATTERY
  5. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . Result Freeze Frame Data Item for DTC P1604 Result Suspected Area Proceed to Battery Voltage Minimum voltage is 6 V or higher and voltage does not fluctuate*1 Starter system A Minimum voltage is 6 V or higher and voltage fluctuates*2, *3 Crankshaft position sensor system ECM B Minimum voltage is 5 to 6 V*4 Excess engine friction Battery fully depleted C HINT: *1: The 5 sets of freeze frame data show approximately the same battery voltage. *2: The 5 sets of freeze frame data show different battery voltages. *3: If the voltage fluctuates, it can be determined that cranking is being performed normally. When the engine speed is 0 RPM, the crankshaft position sensor system and/or the ECM may be malfunctioning. *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. B --> See step 6 C --> CHECK AND REPAIR ENGINE OR BATTERY A --> See step 124
  6. CHECK CRANKSHAFT POSITION SENSOR INSTALLATION Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. NG --> See step 125 OK: Go to next step
  7. CHECK CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector. Check for oil on the connector terminals. OK No oil on the terminals. NG --> See step 126 OK: Go to next step
  8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  9. CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  10. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Fuel Pump / Speed Status Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C (18°F) or more*1 Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temp for A/C by 15°C (27°F) or more - Engine coolant temperature sensor A Other than above All 5 sets of freeze frame data are ON - B At least 1 of the 5 sets of freeze frame data is OFF Fuel pump control system C Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C (18°F)*2 - At least 1 of the 5 sets of freeze frame data is OFF Fuel pump control system C All 5 sets of freeze frame data are ON - B HINT: *1: A long time had not elapsed after stopping the engine. *2: A long time had elapsed after stopping the engine. B --> See step 11 C --> See step 128 A --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR
  11. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Disconnect the fuel pump connector. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition O9-4 - Body ground Active Test is being performed 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the fuel pump connector. NG --> See step 128 OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY POWER SOURCE) Disconnect the fuel injector 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 B57-1 - Body Ground Ignition switch ON 11 to 14 V B56-1 - Body Ground Ignition switch ON 11 to 14 V B55-1 - Body Ground Ignition switch ON 11 to 14 V B54-1 - Body Ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the fuel injector assembly connector. NG --> CHECK FUEL INJECTOR CIRCUIT OK: Go to next step
  13. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 14 A --> REPAIR OR REPLACE FUEL LINE
  14. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck. RESULT Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
  15. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . Result Freeze Frame Data Item for DTC P1604 Suspected Area Proceed to Coolant Temp, Ambient Temp for A/C, Intake Air Coolant Temp, Ambient Temp for A/C Long FT #1 Engine Speed Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is 10°C (18°F) or more Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temp for A/C by 15°C (27°F) or more - - Engine coolant temperature sensor A Other than above -15% or less, or +15% or more - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 RPM or more* Engine assembly C Minimum speed is below 300 RPM Fuel system Intake air system D Difference between Coolant Temp, Ambient Temp for A/C and Intake Air is less than 10°C (18°F) - -15% or less, or +15% or more - Fuel pump control system Fuel injector assembly B -15 to +15% Minimum speed is 300 RPM or more* Engine assembly C Minimum speed is below 300 RPM Fuel system Intake air system D HINT: *: Compression loss may have occurred in the engine assembly. B --> See step 16 C --> See step 129 D --> See step 18 A --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR
  16. INSPECT FUEL INJECTOR ASSEMBLY Check that no carbon is stuck to the fuel injector assembly. OK No carbon present. NG --> See step 130 OK: Go to next step
  17. CHECK FUEL SYSTEM Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck. RESULT Result Proceed to There is foreign matter or signs that fuel pump was stuck A There is no foreign matter and no signs that fuel pump was stuck B B --> See step 24 A --> REPAIR OR REPLACE FUEL SYSTEM
  18. READ FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . Result Freeze Frame Data Item for DTC P1604 Result Suspected Area Proceed to Coolant Temp Engine coolant temperature is 40°C (104°F) or less*1 Pressure regulator A Engine coolant temperature is 40 to 90°C (104 to 194°F)*2 Fuel injector assembly B Engine coolant temperature is 90°C (194°F) or more*3 Pressure regulator A HINT: *1: If the engine coolant temperature is 40°C (104°F) or less (after stopping the engine and the vehicle is not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: If the engine coolant temperature is 40 to 90°C (104 to 194°F) (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector assembly. *3: If the engine coolant temperature is 90°C (194°F) or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. B --> See step 20 A: Go to next step
  19. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Standard 147 kPa (1.5 kgf/cm 2 , 21 psi) or higher (5 minutes after stopping the engine) HINT: If the engine cannot be started, read the values after cranking the engine. RESULT Result Proceed to NG A OK B B --> See step 24 A --> See step 131
  20. CHECK FUEL INJECTOR ASSEMBLY Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 400 ppm or higher A Less than 400 ppm B HINT: If the concentration is 400 ppm or higher, a fuel injector assembly may have a sealing problem. B --> See step 22 A: Go to next step
  21. CHECK FUEL INJECTOR ASSEMBLY Inspect the fuel injectors, refer to «INSPECTION»(ref-422456-S33717048052011092600000) . Result Result Proceed to NG A OK B B --> See step 22 A --> See step 130
  22. CHECK THROTTLE BODY Check if carbon is in the air flow passage. Result Result Proceed to Carbon in passage A No carbon present B B --> See step 23 A --> See step 132
  23. CHECK INTAKE SYSTEM Check the intake system for vacuum leak, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422457-S33275328762011092600000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  24. PERFORM SIMULATION TEST Check if the engine can be started. Result Result Proceed to Engine can be started A Engine cannot be started B B --> See step 25 A --> END
  25. CHECK MALFUNCTION CONDITION Confirm the problem symptoms. HINT: The problem symptoms below can be determined by reading the freeze frame data. Result Problem Symptom Suspected Area Proceed to The engine does not crank Battery fully depleted Starter (includes pinion gear wear or teeth damage) Starter system Engine assembly (excess friction) Drive plate wear or teeth damage A Abnormal cranking speed Battery fully depleted Starter Engine assembly (excess friction, compression loss) B There is no initial combustion (combustion does not occur even once)*1 Fuel pressure of pressure regulator maintained Fuel injector assembly leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil system C The engine stalls after starter turnoff (engine stalls immediately after the first time the engine speed increases)*2 Intake system connections Throttle body Camshaft timing oil control valve Mass air flow meter system D The initial combustion and starter turnoff occur late*3 Engine coolant temperature sensor Mass air flow meter Air fuel ratio sensor Heated oxygen sensor Fuel injector assembly Spark plug Pressure regulator Fuel pump Fuel pump control system E HINT: If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning. *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning. *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the camshaft timing oil control valve may have a problem returning. *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high). B --> See step 32 C --> See step 35 D --> See step 51 E --> See step 58 A: Go to next step
  26. PERFORM SIMULATION TEST When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely. Result Problem Symptom Suspected Area Proceed to A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely* Battery Excess engine friction Starter A A noise indicating that the starter pinion gear is extending is heard but the starter pinion gear is spinning freely Drive plate Starter B A noise indicating that the starter pinion gear is extending is not heard Battery Starter Starter system C HINT: *: The battery may be fully depleted or there may be excess engine friction. B --> See step 29 C --> See step 30 A: Go to next step
  27. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  28. CHECK ENGINE ASSEMBLY Check that the crankshaft rotates smoothly when rotating it by hand. OK Crankshaft rotates smoothly. HINT: Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 134
  29. INSPECT STARTER ASSEMBLY Remove the starter assembly, refer to «REMOVAL»(ref-422452-S26228446542011092600000) . Check for starter pinion gear wear and damage. Standard There is no wear or damage. Install the starter assembly. NG --> See step 135 OK --> See step 133
  30. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  31. INSPECT STARTER ASSEMBLY Inspect the starter assembly, refer to «INSPECTION»(ref-422452-S19657170332011092600000) . NG --> See step 135 OK --> See step 124
  32. PERFORM SIMULATION TEST Check the cranking speed. Result Problem Symptom Suspected Area Proceed to Cranking speed is slow (100 RPM or less) Battery Starter assembly Excess engine friction A Cranking speed is fast (300 RPM or more)* Engine compression loss B HINT: *: If the cranking speed is fast, there may be compression loss. B --> See step 129 A: Go to next step
  33. INSPECT BATTERY Check the electrolyte quantity. Standard Electrolyte quantity is within the specified range. Inspect the specific gravity. Inspect the specific gravity of each cell. Standard specific gravity 1.25 to 1.29 (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. It is not necessary to inspect a maintenance-free battery. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
  34. CHECK ENGINE ASSEMBLY Check that the crankshaft rotates smoothly when rotating it by hand. OK Crankshaft rotates smoothly. HINT: Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts. NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 134
  35. CHECK FUEL INJECTOR ASSEMBLY Using a sound scope or screwdriver, check for an fuel injector assembly operating noise while cranking the engine. OK Fuel injector assembly operating noise is heard. NG --> See step 48 OK: Go to next step
  36. CHECK FUEL PRESSURE Inspect the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . NG --> See step 46 OK: Go to next step
  37. CHECK SPARK PLUG AND SPARK Check for sparks, refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422440-S39986225172011092600000) . NG --> See step 41 OK: Go to next step
  38. CONFIRM VEHICLE CONDITION Confirm the conditions present when the malfunction occurred based on the customer problem analysis. Result Problem Symptom Suspected Area Proceed to When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector assembly leak B When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4 HINT: *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: Fuel may be leaking from a fuel injector assembly. *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *4: From step 72, perform fuel system troubleshooting C (steps 73 to 78). B --> See step 40 C --> See step 72 A: Go to next step
  39. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm 2) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) B* HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *: From step 72, perform fuel system troubleshooting C (steps 73 to 78). B --> See step 72 A --> See step 131
  40. CHECK FUEL INJECTOR ASSEMBLY After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 400 ppm or higher A Less than 400 ppm B* HINT: If the concentration is 400 ppm or higher, a fuel injector assembly may have a sealing problem. *: From step 72, perform fuel system troubleshooting C (steps 73 to 78). B --> See step 72 A --> See step 130
  41. CHECK SPARK PLUG Inspect the spark plugs, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422440-S39986225172011092600000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 136 OK: Go to next step
  42. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Engine Speed. Start the engine. While running the engine, read the Engine Speed value. Standard A value that matches the actual engine speed is constantly output. HINT: Check the engine speed using a line graph. If the engine cannot be started, check the engine speed while cranking the engine. If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit. NG --> See step 137 OK: Go to next step
  43. CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil 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 B30-1 (+B) - B30-4 (GND) Ignition switch ON 11 to 14 V B59-1 (+B) - B59-4 (GND) Ignition switch ON 11 to 14 V B32-1 (+B) - B32-4 (GND) Ignition switch ON 11 to 14 V B60-1 (+B) - B60-4 (GND) Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL - IG2 RELAY) OK: Go to next step
  44. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B30-2 (IGF) - B48-16 (IGF1) Always Below 1 ohms B59-2 (IGF) - B48-16 (IGF1) Always Below 1 ohms B32-2 (IGF) - B48-16 (IGF1) Always Below 1 ohms B60-2 (IGF) - B48-16 (IGF1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B30-2 (IGF) or B48-16 (IGF1) - Body ground Always 10 kohms or higher B59-2 (IGF) or B48-16 (IGF1) - Body ground Always 10 kohms or higher B32-2 (IGF) or B48-16 (IGF1) - Body ground Always 10 kohms or higher B60-2 (IGF) or B48-16 (IGF1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  45. CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B30-3 (IGT1) - B48-2 (IGT1) Always Below 1 ohms B59-3 (IGT2) - B48-3 (IGT2) Always Below 1 ohms B32-3 (IGT3) - B48-4 (IGT3) Always Below 1 ohms B60-3 (IGT4) - B48-5 (IGT4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B30-3 (IGT1) or B48-2 (IGT1) - Body ground Always 10 kohms or higher B59-3 (IGT2) or B48-3 (IGT2) - Body ground Always 10 kohms or higher B32-3 (IGT3) or B48-4 (IGT3) - Body ground Always 10 kohms or higher B60-3 (IGT4) or B48-5 (IGT4) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the ignition coil, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform troubleshooting for the ignition system (steps 79 to 87). Reconnect the ECM connector. Reconnect the ignition coil connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 138
  46. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for an operating sound from the fuel pump. Standard Techstream Operation Specified Condition ON Operating sound heard OFF Operating sound not heard HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. NG --> See step 128 OK: Go to next step
  47. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform fuel system troubleshooting (steps 73 to 78). B --> See step 128 A --> REPAIR OR REPLACE FUEL LINE
  48. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Engine Speed. Start the engine. While running the engine, read the Engine Speed value. Standard A value that matches the actual engine speed is constantly output. HINT: Check the engine speed using a line graph. If the engine cannot be started, check the engine speed while cranking the engine. If the engine speed is 0 RPM, the crankshaft position sensor may have an open or short circuit. NG --> See step 126 OK: Go to next step
  49. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY POWER SOURCE) Disconnect the fuel injector 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 B54-1 - Body Ground Ignition switch ON 11 to 14 V B55-1 - Body Ground Ignition switch ON 11 to 14 V B56-1 - Body Ground Ignition switch ON 11 to 14 V B57-1 - Body Ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - IG2 RELAY) OK: Go to next step
  50. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B54-2 - B48-7 (#10) Always Below 1 ohms B55-2 - B48-8 (#20) Always Below 1 ohms B56-2 - B48-9 (#30) Always Below 1 ohms B57-2 - B48-10 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B54-2 or B48-7 (#10) - Body ground Always 10 kohms or higher B55-2 or B48-8 (#20) - Body ground Always 10 kohms or higher B56-2 or B48-9 (#30) - Body ground Always 10 kohms or higher B57-2 or B48-10 (#40) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 127
  51. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, refer to «INSPECTION»(ref-422454-S10823200122011092600000) . NG --> See step 57 OK: Go to next step
  52. CHECK INTAKE SYSTEM Check for air suction in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.], refer to «ON-VEHICLE INSPECTION - Step 1»(ref-422457-S33275328762011092600000) . HINT: If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake manifold increases and the air suction noise becomes louder. If Short FT #1 and Long FT #1 are largely different from the normal values when idling (intake air volume is small) and almost the same as the normal values when racing the engine (intake air volume is high), air leakage may be present. Standard There is no air suction. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
  53. CHECK THROTTLE BODY Disconnect the throttle body connector. HINT: When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 6°. Crank the engine and check that it starts. Result Result Proceed to Engine starts A Engine does not start B Connect the throttle body connector. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . B --> See step 55 A: Go to next step
  54. CHECK THROTTLE BODY Check if carbon is in the air flow passage. Standard No carbon present. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
  55. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 1). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in P or N. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Techstream Operation Specified Condition OFF Normal engine speed ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the camshaft timing oil control valve assembly is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall. NG --> See step 139 OK: Go to next step
  56. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1). Check the engine speed while operating the oil control valve using the Techstream. OK* Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls Result Result Proceed to NG A OK B HINT: *: From step 72, perform intake system troubleshooting (steps 88 to 90). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 91 to 98). Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. If the camshaft timing oil control valve assembly is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall. B --> See step 72 A --> See step 140
  57. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-5 (VG) - B50-11 (VG) Always Below 1 ohms B10-4 (E2G) - B50-5 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B10-5 (VG) or B50-11 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 72 and perform intake system troubleshooting (steps 88 to 90). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 91 to 98). Reconnect the ECM connector. Reconnect the mass air flow meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 141
  58. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor, refer to «INSPECTION»(ref-422454-S19699053592011092600000) . HINT: If the engine coolant temperature sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
  59. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B53-2 - B51-18 (THW) Always Below 1 ohms B53-1 - B51-17 (ETHW) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B53-2 or B51-18 (THW) - Body ground Always 10 kohms or higher B53-1 or B51-17 (ETHW) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. Reconnect the ECM connector. Reconnect the engine coolant temperature sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  60. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, refer to «INSPECTION»(ref-422454-S10823200122011092600000) . HINT: If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. NG --> See step 141 OK: Go to next step
  61. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B10-5 (VG) - B50-11 (VG) Always Below 1 ohms B10-4 (E2G) - B50-5 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B10-5 (VG) or B50-11 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. Reconnect the ECM connector. Reconnect the mass air flow meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  62. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Atmosphere Pressure and Long FT #1. Read the value. Result Data List Item Result Suspected Area Proceed to Long FT #1 +25% or more or less than -25% Air fuel ratio sensor Heated oxygen sensor Mass air flow meter Fuel injector assembly ECM A Atmosphere Pressure 80 kPa (600 mmHg) or less (when altitude is 0 m) Both Data List items listed above Values are other than above - B B --> See step 66 A: Go to next step
  63. PERFORM SIMULATION TEST Remove the EFI No. 1 and ETCS fuses from the engine room relay block. After 60 seconds or more elapse, install the EFI No. 1 and ETCS fuses. Check if the engine can be started. RESULT Result Proceed to Engine can be started A Engine cannot be started B B --> See step 66 A: Go to next step
  64. INSPECT AIR FUEL RATIO SENSOR Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Fuel System Status #1. Confirm that Fuel System Status #1 is CL. Enter the following menus: Powertrain / Engine / Data List / All Data / AF Lambda B1S1. Confirm that AF Lambda B1S1 is within the range of 0.95 to 1.05 when idling. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Techstream Display Injection Volume Specified Condition AFS Voltage B1S1 +25% Air fuel ratio sensor output voltage is below 3.1 V -12.5% Air fuel ratio sensor output voltage is higher than 3.4 V HINT: 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 air fuel ratio sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. NG --> See step 142 OK: Go to next step
  65. PERFORM SIMULATION TEST Check if the idling speed is stable after starting the engine. OK Idling speed is stable. HINT: After replacing the fuel injector assembly or mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. NG --> See step 130 OK --> See step 141
  66. CHECK FUEL PRESSURE Inspect the fuel pressure, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . NG --> See step 71 OK: Go to next step
  67. CHECK SPARK PLUG Inspect the spark plugs, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422440-S39986225172011092600000) . RESULT Result Proceed to All cylinders are normal A One cylinder is abnormal*1 B All cylinders are abnormal*2, *3 C HINT: *1: If one cylinder is abnormal, replace the spark plug of that cylinder and inspect the ignition and fuel system for that cylinder. After performing repairs, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. *2: If all cylinders are abnormal, replace the spark plugs of all cylinders and check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. B --> See step 143 C --> See step 144 A: Go to next step
  68. CONFIRM VEHICLE CONDITION Confirm the conditions present when the malfunction occurred based on the customer problem analysis. Result Problem Symptom Suspected Area Proceed to When the engine is stopped and a long time has passed, engine starting trouble occurs*1 Pressure regulator is stuck open A When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2 Fuel injector assembly leak B When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3 Failure to maintain fuel pressure by pressure regulator A Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs - C*4 HINT: *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *2: Fuel may be leaking from a fuel injector assembly. *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine. *4: From step 72, perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. B --> See step 70 C --> See step 72 A: Go to next step
  69. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) B* HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *: From step 72, perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. B --> See step 72 A --> See step 131
  70. CHECK FUEL INJECTOR ASSEMBLY Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 400 ppm or higher A Less than 400 ppm B* HINT: If the concentration is 400 ppm or higher, a fuel injector assembly may have a sealing problem. *: From step 72, perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. B --> See step 72 A --> See step 130
  71. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 72 and perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. B --> See step 128 A --> REPAIR OR REPLACE FUEL LINE
  72. CHECK MALFUNCTION CONDITION If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 47, perform fuel system troubleshooting C (steps 73 to 78). Result Performed Step Troubleshooting by System Procedure Proceed to Steps 38, 39, 40 and 47 Fuel system troubleshooting C 73 to 78 A If the malfunction could not be identified during the inspection in step 45, perform ignition system troubleshooting (steps 79 to 87). Result Performed Step Troubleshooting by System Procedure Proceed to Step 45 Ignition system troubleshooting 79 to 87 B If the malfunction could not be identified during the inspection in steps 55, 56 and 57, perform intake air system troubleshooting (steps 88 to 90). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 91 to 98). Result Performed Step Troubleshooting by System Procedure Proceed to Step 55, 56, 57 Intake air system troubleshooting 88 to 90 C Fuel system troubleshooting A 91 to 98 If the malfunction could not be identified during the inspection in steps 58, 59, 60, 61, 64, 65, 67, 68, 69, 70 and 71, perform fuel system troubleshooting A (steps 99 to 106), fuel system troubleshooting B (steps 107 to 109), intake air system troubleshooting (steps 110 to 112), and ignition system troubleshooting (steps 113 to 121), in that order. Result Performed Step Troubleshooting by System Procedure Proceed to Steps 58, 59, 60, 61, 64, 65, 67, 68, 69, 70 and 71 Fuel system troubleshooting A 99 to 106 D Fuel system troubleshooting B 107 to 109 Intake air system troubleshooting 110 to 112 Ignition system troubleshooting 113 to 121 B --> See step 79 C --> See step 88 D --> See step 99 A: Go to next step
  73. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injectors assembly, refer to «INSPECTION»(ref-422456-S33717048052011092600000) . NG --> See step 130 OK: Go to next step
  74. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY POWER SOURCE) Disconnect the fuel injector 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 B54-1 - Body Ground Ignition switch ON 11 to 14 V B55-1 - Body Ground Ignition switch ON 11 to 14 V B56-1 - Body Ground Ignition switch ON 11 to 14 V B57-1 - Body Ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - IG2 RELAY) OK: Go to next step
  75. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B54-2 - B48-7 (#10) Always Below 1 ohms B55-2 - B48-8 (#20) Always Below 1 ohms B56-2 - B48-9 (#30) Always Below 1 ohms B57-2 - B48-10 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B54-2 or B48-7 (#10) - Body ground Always 10 kohms or higher B55-2 or B48-8 (#20) - Body ground Always 10 kohms or higher B56-2 or B48-9 (#30) - Body ground Always 10 kohms or higher B57-2 or B48-10 (#40) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK: Go to next step
  76. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 77 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  77. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 78 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  78. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
  79. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 145 OK: Go to next step
  80. CHECK CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Check the tightening and installation condition of the camshaft position sensor (for intake camshaft) bolt. Check the connection of the camshaft position sensor (for intake camshaft) connector. OK Sensor is installed correctly. NG --> See step 146 OK: Go to next step
  81. CHECK CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Check the tightening and installation condition of the camshaft position sensor (for exhaust camshaft) bolt. Check the connection of the camshaft position sensor (for exhaust camshaft) connector. OK Sensor is installed correctly. NG --> See step 147 OK: Go to next step
  82. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  83. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM) Disconnect the camshaft position sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B63-1 (VVI+) - B49-17 (G2+) Always Below 1 ohms B63-2 (VVI-) - B49-5 (G2-) Always Below 1 ohms B63-3 (VC) - B49-11 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-1 (VVI+) or B49-17 (G2+) - Body ground Always 10 kohms or higher B63-2 (VVI-) or B49-5 (G2-) - Body ground Always 10 kohms or higher B63-3 (VC) or B49-11 (VCV1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the camshaft position sensor (for intake camshaft) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  84. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B62-1 (VVE+) - B50-13 (EV1+) Always Below 1 ohms B62-2 (VVE-) - B50-1 (EV1-) Always Below 1 ohms B62-3 (VC2) - B50-7 (VCE1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-1 (VVE+) or B50-13 (EV1+) - Body ground Always 10 kohms or higher B62-2 (VVE-) or B50-1 (EV1-) - Body ground Always 10 kohms or higher B62-3 (VC2) or B50-7 (VCE1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the camshaft position sensor (for exhaust camshaft) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  85. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 86 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  86. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 87 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  87. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
  88. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / ISC Learning Value. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches off. Result Data List Item Result Suspected Area Proceed to ISC Learning Value (Engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 90 A: Go to next step
  89. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression, refer to «ON-VEHICLE INSPECTION - Step 9»(ref-422438-S22544883302011092600000) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> CHECK VALVE TIMING
  90. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor, refer to «INSPECTION»(ref-422454-S19699053592011092600000) . NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
  91. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine. Result Vehicle State Specified Condition Cranking engine 304 to 343 kPa (3.1 to 3.5 kgf/cm 2 ) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm 2 ) or more NG --> See step 97 OK: Go to next step
  92. READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Long FT #1. Result Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector assembly B B --> See step 130 A: Go to next step
  93. PERFORM SIMULATION TEST Check if the idling speed after starting the engine is currently stable and has always been stable in the past. Result Problem Symptom Suspected Area Proceed to Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A All current and past idling speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
  94. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 145 OK: Go to next step
  95. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  96. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  97. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 98 A --> REPAIR OR REPLACE FUEL LINE
  98. INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 - 5 20°C (68°F) 0.2 to 3.0 ohms HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. Reconnect the fuel pump connector. NG --> See step 148 OK --> See step 131
  99. CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures, refer to «ON-VEHICLE INSPECTION - Step 2»(ref-422461-S27554927852011092600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) A Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) B B --> See step 105 A: Go to next step
  100. READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Long FT #1. Result Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector assembly B B --> See step 130 A: Go to next step
  101. PERFORM SIMULATION TEST Check if the idling speed after starting the engine is currently stable and has always been stable in the past. RESULT Problem Symptom Suspected Area Proceed to Current unstable idling speed or history of unstable idling speed Crankshaft position sensor system A All current and past idling speeds are stable Fuel B HINT: Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added to check if the malfunction is caused by the fuel in the vehicle. B --> REPLACE FUEL A: Go to next step
  102. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 145 OK: Go to next step
  103. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  104. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  105. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. RESULT Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 106 A --> REPAIR OR REPLACE FUEL LINE
  106. INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 - 5 20°C (68°F) 0.2 to 3.0 ohms HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. Reconnect the fuel pump connector. NG --> See step 148 OK: Go to next step
  107. CHECK PURGE VSV Disconnect the vacuum hose (on the canister side) of the purge VSV. Start the engine. Idle the engine. Disconnect the purge VSV connector. Check if air flows through the purge VSV. Standard Air does not flow Reconnect the purge VSV connector. Reconnect the vacuum hose. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . NG --> See step 149 OK: Go to next step
  108. CHECK FUEL INJECTOR ASSEMBLY Clean the inside of the surge tank with compressed air. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes. Result Result Proceed to 400 ppm or higher A Less than 400 ppm B HINT: If the concentration is 400 ppm or higher, a fuel injector assembly may have a sealing problem. B --> See step 109 A --> See step 130
  109. CHECK INTAKE VALVE Check if carbon is on the intake valves. Result Result Proceed to Carbon present A No carbon present B B --> See step 110 A --> CLEAN INTAKE VALVE
  110. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / ISC Learning Value. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Result Data List Item Result Suspected Area Proceed to ISC Learning Value (engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 112 A: Go to next step
  111. CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression, refer to «ON-VEHICLE INSPECTION - Step 9»(ref-422438-S22544883302011092600000) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> See step 150
  112. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor, refer to «INSPECTION»(ref-422454-S19699053592011092600000) . NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
  113. CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 145 OK: Go to next step
  114. CHECK CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Check the tightening and installation condition of the camshaft position sensor (for intake camshaft) bolt. Check the connection of the camshaft position sensor (for intake camshaft) connector. OK Sensor is installed correctly. NG --> See step 146 OK: Go to next step
  115. CHECK CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Check the tightening and installation condition of the camshaft position sensor (for exhaust camshaft) bolt. Check the connection of the camshaft position sensor (for exhaust camshaft) connector. OK Sensor is installed correctly. NG --> See step 147 OK: Go to next step
  116. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B21-1 - B50-14 (NE+) Always Below 1 ohms B21-2 - B50-2 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B21-1 or B50-14 (NE+) - Body ground Always 10 kohms or higher B21-2 or B50-2 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the crankshaft position sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  117. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) - ECM) Disconnect the camshaft position sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B63-1 (VVl+) - B49-17 (G2+) Always Below 1 ohms B63-2 (VVl-) - B49-5 (G2-) Always Below 1 ohms B63-3 (VC) - B49-11 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B63-1 (VVl+) or B49-17 (G2+) - Body ground Always 10 kohms or higher B63-2 (VVl-) or B49-5 (G2-) - Body ground Always 10 kohms or higher B63-3 (VC) or B49-11 (VCV1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the camshaft position sensor (for intake camshaft) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  118. CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B62-1 (VVE+) - B50-13 (EV1+) Always Below 1 ohms B62-2 (VVE-) - B50-1 (EV1-) Always Below 1 ohms B62-3 (VC2) - B50-7 (VCE1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B62-1 (VVE+) or B50-13 (EV1+) - Body ground Always 10 kohms or higher B62-2 (VVE-) or B50-1 (EV1-) - Body ground Always 10 kohms or higher B62-3 (VC2) or B50-7 (VCE1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunction that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ECM connector. Reconnect the camshaft position sensor (for exhaust camshaft) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  119. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor, refer to «REMOVAL»(ref-422454-S19678557662011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 120 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
  120. REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) Replace the camshaft position sensor (for intake camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 121 OK --> END (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT) IS DEFECTIVE)
  121. REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) Replace the camshaft position sensor (for exhaust camshaft), refer to «REMOVAL»(ref-422454-S19832999002011092600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 127 OK --> END (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT) IS DEFECTIVE)
  122. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-422301-S13330058002011092600000)
  123. REPAIR ENGINE IMMOBILISER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-422299-S29476179362011092600000)
  124. CHECK STARTER SIGNAL CIRCUIT. Refer to «Starter Signal Circuit»(ref-422453-S26912490632011092600000)
  125. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-422454-S18796511172011092600000)
  126. REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-422454-S19678557662011092600000)
  127. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  128. CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-422453-S32817142032011092600000)
  129. CHECK AND REPAIR ENGINE ASSEMBLY. Refer to «REMOVAL»(ref-422454-S38543213272011092600000)
  130. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-422456-S31838584772011092600000)
  131. REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-422456-S01999098892011092600000)
  132. CLEAN OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-422454-S36070692272011092600000)
  133. REPLACE DRIVE PLATE AND RING GEAR. Refer to «REMOVAL»(ref-422438-S12600925102011092600000)
  134. INSPECT STARTER ASSEMBLY. Refer to «INSPECTION»(ref-422452-S19657170332011092600000)
  135. REPLACE STARTER ASSEMBLY. Refer to «REMOVAL»(ref-422452-S26228446542011092600000)
  136. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-422462-S01956674162011092600000)
  137. CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «DESCRIPTION»(ref-422455-S07907211642011092600000)
  138. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-422462-S01956674162011092600000)
  139. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-422454-S26671936412011092600000)
  140. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-422454-S26671936412011092600000)
  141. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-422454-S17733953542011092600000)
  142. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-422454-S13686551372011092600000)
  143. REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-422462-S01956674162011092600000)
  144. REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-422462-S01956674162011092600000)
  145. SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-422454-S18796511172011092600000)
  146. SECURELY REINSTALL CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT). Refer to «INSTALLATION»(ref-422454-S19647723132011092600000)
  147. SECURELY REINSTALL CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT). Refer to «REMOVAL»(ref-422454-S19832999002011092600000)
  148. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-422456-S28943871842011092600000)
  149. INSPECT PURGE VSV. Refer to «INSPECTION»(ref-422448-S29712380392011092600000)
  150. ADJUST VALVE TIMING. Refer to «REASSEMBLY»(ref-422438-S39800685212011092600000)

HINT

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

HINT

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

HINT

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

Scheme 115

Scheme 115: PROCEDURE
Scheme 115: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE TUMBLE CONTROL VALVE) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the IAC Duty Ratio / All Data / IAC Sensor Voltage. Check the output voltage of IAC Sensor Voltage while changing Control the IAC Duty Ratio from -100 to 100% (or from 100 to -100%) using the Techstream. OK The voltage output of IAC Sensor Voltage remains between 0.2 and 4.8 V while Control the IAC Duty Ratio is changed from -100 to 100% (or from 100 to -100%). HINT Control the IAC Duty Ratio operation IAC Sensor Voltage (Normal) Suspected Failure Area IAC1 circuit shorted VCIA circuit open VCIA and IAC1 circuit shorted IAC1 circuit open EIA1 circuit open Sensor malfunction -100% 0.2 to 1.0 V Remains below 0.2 V Remains higher than 4.8 V Other than the voltage in the 2 columns on the left 100% 3.2 to 4.8 V Remains below 0.2 V Remains higher than 4.8 V NG --> See step 3 OK: Go to next step
  2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to P2014, P2016 and/or P2017 are output again A DTC is not output B B --> See step 7 A --> See step 9
  3. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ACTUATOR - ECM) Disconnect the ECM connector. Disconnect the intake air control valve actuator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B50-16 (VCIA) - d4-3 (VDD) Always Below 1 ohms B50-18 (IAC1) - d4-1 (OUT) Always Below 1 ohms B50-17 (EIA1) - d4-2 (GND) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B50-16 (VCIA) or d4-3 (VDD) - Body ground Always 10 kohms or higher B50-18 (IAC1) or d4-1 (OUT) - Body ground Always 10 kohms or higher Reconnect the intake air control valve actuator connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT ECM (VCIA VOLTAGE) Disconnect the intake air control valve actuator 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 d4-3 (VDD) - Body ground Ignition switch ON 4.5 to 5.5 V Reconnect the intake air control valve actuator connector. NG --> See step 8 OK: Go to next step
  5. REPLACE INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE) Replace the intake air control valve actuator, refer to «REMOVAL»(ref-422463-S40838264112011092600000) . NEXT: Go to next step
  6. CHECK WHETHER DTC OUTPUT RECURS (DTC P2014, P2016 AND/OR P2017 ARE OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to P2014, P2016 and/or P2017 are output again A DTC is not output B B --> REPAIR COMPLETED A --> See step 10
  7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-422301-S08892066442011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  9. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  10. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)

HINT

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

Scheme 116

Scheme 116: PROCEDURE
Scheme 116: PROCEDURE
  1. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the throttle body connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (M+) - 1 (M-) 20°C (68°F) 0.3 to 100 ohms Reconnect the throttle body connector. NG --> See step 5 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (THROTTLE BODY - ECM) Disconnect the throttle body connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B27-2 (M+) - B48-18 (M+) Always Below 1 ohms B27-1 (M-) - B48-19 (M-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B27-2 (M+) or B48-18 (M+) - Body ground Always 10 kohms or higher B27-1 (M-) or B48-19 (M-) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the throttle body connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) Check for foreign objects between the throttle valve and the housing. OK No foreign objects between the throttle valve and housing. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
  4. INSPECT THROTTLE BODY (THROTTLE VALVE) Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. NG --> See step 6 OK --> See step 7
  5. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-422454-S36070692272011092600000)
  6. REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-422454-S36070692272011092600000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)

HINT

  1. Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
  1. Since a pending DTC is not stored for this DTC, it takes time to confirm whether the malfunction has been successfully repaired by checking for this DTC. When confirming whether the malfunction has been successfully repaired, compare "ISC Learning Value" recorded in the freeze frame data with "ISC Learning Value" in the Data List after repairs have been made to save time.

Scheme 117

Scheme 117: PROCEDURE
Scheme 117: PROCEDURE
  1. CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. RESULT Result Proceed to Only DTC P2109 is output A DTC P2109 and other DTCs are output B HINT: If any DTCs other than P2109 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
  2. CHECK FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, check "ISC Learning Value" in the freeze frame data, refer to «FREEZE FRAME DATA»(ref-422301-S41940209302011092600000) . HINT: Be sure to check "ISC Learning Value" in the freeze frame data as it is used when confirming whether the malfunction has been successfully repaired. NEXT: Go to next step
  3. REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY ASSEMBLY) Clean off any deposits from the inside of the throttle body. Push open the throttle valve and wipe off any carbon from the valve and bore using a cloth soaked in non-residue solvent. NOTE: Make sure that the cloth or your fingers do not get caught in the valve. Make sure that foreign matter does not enter the throttle body. Do not directly apply non-residue solvent to the throttle body or wash the throttle body. Cleaning solvent may leak into the motor from the shaft and cause problems such as rust or valve movement problems. If there is coating material on the edge of the valve, be careful not to remove it. Push the throttle valve open gently with your finger and check that the throttle valve moves smoothly. HINT: If the throttle valve does not open smoothly, replace the throttle body assembly. NEXT: Go to next step
  4. READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Remove the EFI No. 1 and ETCS fuses at the same time, wait 60 seconds or more, and then reinstall the fuses to reset the ISC learned value. Start the engine and fully warm it up. HINT: The A/C switch and all accessory switches should be off. Leave the vehicle idling for 3 minutes or more and check that the engine speed is at the standard idling speed. HINT: Check the freeze frame data and make sure that the vehicle conditions are the same as when the DTC was stored. Using the Techstream, check "ISC Learning Value". OK The value is half of "ISC Learning Value" recorded in the freeze frame data or less. NG --> See step 6 OK --> END
  5. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-422301-S13330058002011092600000)
  6. REPLACE THROTTLE BODY ASSEMBLY. Refer to «REMOVAL»(ref-422454-S36070692272011092600000)

HINT

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

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

HINT

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

HINT

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

HINT

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

Scheme 118

Scheme 118: PROCEDURE
Scheme 118: PROCEDURE

Scheme 119

Scheme 119
Scheme 119
  1. READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Accel Sensor Out No. 1 and Accel Sensor Out No. 2. Read the value displayed on the Techstream. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Difference between Accel Sensor Out No. 1 and Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V More than 0.02 V Depressed 2.6 to 4.5 V 3.4 to 4.98 V OK --> See step 5 NG --> See step 2
  2. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM) Disconnect the accelerator pedal position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A18-6 (VPA) - D60-6 (VPA) Always Below 1 ohms A18-5 (EPA) - D60-2 (EPA) Always Below 1 ohms A18-4 (VCPA) - D60-4 (VCPA) Always Below 1 ohms A18-3 (VPA2) - D60-5 (VPA2) Always Below 1 ohms A18-2 (EPA2) - D60-1 (EPA2) Always Below 1 ohms A18-1 (VCP2) - D60-3 (VCP2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A18-6 (VPA) or D60-6 (VPA) - Body ground Always 10 kohms or higher A18-5 (EPA) or D60-2 (EPA) - Body ground Always 10 kohms or higher A18-4 (VCPA) or D60-4 (VCPA) - Body ground Always 10 kohms or higher A18-3 (VPA2) or D60-5 (VPA2) - Body ground Always 10 kohms or higher A18-2 (EPA2) or D60-1 (EPA2) - Body ground Always 10 kohms or higher A18-1 (VCP2) or D60-3 (VCP2) - Body ground Always 10 kohms or higher Reconnect the accelerator pedal position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK ECM (VCPA AND VCP2 VOLTAGE) Disconnect the accelerator pedal position 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 A18-4 (VCPA) - A18-5 (EPA) Ignition switch ON 4.5 to 5.5 V A18-1 (VCP2) - A18-2 (EPA2) Ignition switch ON 4.5 to 5.5 V Reconnect the accelerator pedal position sensor connector. NG --> See step 6 OK: Go to next step
  4. REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly, refer to «REMOVAL»(ref-422454-S16215038612011092600000) . NEXT: Go to next step
  5. CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL 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-422301-S01463917032011092600000) . Turn the ignition switch off. Turn the ignition switch to ON and turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 are output A DTC is not output B B --> END A --> See step 7
  6. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  7. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)

HINT

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

HINT

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

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

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1 S1 and O2S B1 S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 25%.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (Air fuel ratio)+25%RichLess than 3.1 V
12.5%LeanMore than 3.4 V
O2S B1 S2 (Heated oxygen)+25%RichMore than 0.55 V
12.5%LeanLess than 0.4 V

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

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

Scheme 120

Scheme 120
Scheme 120

Scheme 121

Scheme 121
Scheme 121

Scheme 122

Scheme 122
Scheme 122

Scheme 123

Scheme 123
Scheme 123
  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1 S1 and O2S B1 S2; then press the graph button on the Data List screen.

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

HINT

  1. Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor.
  2. Sensor 1 refers to the sensor mounted in front of the Three-way Catalytic Converter (TWC) and located near the engine assembly.
  3. DTC P2A00 may be stored when the air-fuel ratio is stuck at a rich or lean value.
  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 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.
  5. 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.
  6. 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.
  7. Sensor 1 refers to the sensor closest to the engine assembly.
  8. Sensor 2 refers to the sensor farthest away from the engine assembly.

HINT

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

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

  1. Connect the Techstream to the DLC3.
  2. Start the engine.
  3. Turn the Techstream on.
  4. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds.
  5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1 S1 and O2S B1 S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 25%.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (Air fuel ratio)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (Heated oxygen)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

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

  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1 S1 and O2S B1 S2; 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.

DTC SUMMARY

DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P2420Vent valve stuck open (vent)Following condition met during key-off EVAP monitor: EVAP pressure change when vent valve closed (ON) below 0.3 kPa-g (2.25 mmHg-g)Canister pump module (Reference orifice, leak detection pump, vent valve) Connector/wire harness (Canister pump module - ECM) ECMWhile ignition switch off2 trip

HINT

The vent valve is built into the canister pump module.

Refer to EVAP System, refer to INSPECTION PROCEDURE .

HINT

Unit expressions

  1. [kPa-a (mmHg-a)] denotes the absolute pressure.
  2. [kPa-g (mmHg-g)] denotes the gauge pressure (relative pressure).
  3. On the Techstream, convert the unit of measurement according to the inspection procedure.
DTC No.Monitoring ItemMalfunction Detection ConditionTrouble AreaDetection TimingDetection Logic
P2610Soak timer (built into ECM)ECM internal malfunctionECMEngine running2 trip

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

HINT

  1. DTC P2610 is stored if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is necessary.
  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 / Active Test / Control the Injection Volume for A/F Sensor.
  6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
  7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1 S1 and O2S B1 S2) displayed on the Techstream.

HINT

  1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by -12.5% or increases the injection volume by 25%.
  2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Techstream Display (Sensor)Injection VolumeStatusVoltage
AFS Voltage B1 S1 (Air fuel ratio)+25%RichBelow 3.1 V
12.5%LeanHigher than 3.4 V
O2S B1 S2 (Heated oxygen)+25%RichHigher than 0.55 V
12.5%LeanBelow 0.4 V

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

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

  1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
  2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1 S1 and O2S B1 S2; 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. DTC P2A00 may be also stored when the air fuel ratio is stuck at rich or lean.
  2. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
  3. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
  4. 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. Sensor 1 refers to the sensor closest to the engine assembly.
  6. Sensor 2 refers to the sensor farthest away from the engine assembly.

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

Scheme 124

Scheme 124: PROCEDURE
Scheme 124: PROCEDURE
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0101) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC U0101 is output A DTC U0101 and other DTCs are output B HINT: If any DTCs other than U0101 are output, troubleshoot those DTCs first. B --> See step 7 A: Go to next step
  2. INSPECT ECU POWER SOURCE CIRCUIT (TCM POWER SOURCE) Disconnect the TCM connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition B52-18 (+B) - Body ground Ignition switch ON 11 to 14 V B52-1 (BATT) - Body ground Always 11 to 14 V Reconnect the TCM connector. NG --> See step 8 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND) Disconnect the TCM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Condition Condition Specified Condition B52-8 (E1) - Body ground Always Below 1 ohms Reconnect the TCM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (ECM - TCM) Disconnect the ECM connector. Disconnect the TCM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B52-6 (CAN+) - B51-30 (CAN+) Always Below 1 ohms B52-7 (CAN-) - B51-36 (CAN-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B52-6 (CAN+) or B51-30 (CAN+) - Body ground Always 10 kohms or higher B52-7 (CAN-) or B51-36 (CAN-) - Body ground Always 10 kohms or higher Reconnect the ECM connector and TCM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. REPLACE ECM Replace the ECM, refer to «REMOVAL»(ref-422454-S15687586072011092600000) . NEXT: Go to next step
  6. CHECK WHETHER DTC OUTPUT RECURS (DTC U0101) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC U0101 is output B B --> See step 9 A --> REPAIR COMPLETED
  7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-422301-S13330058002011092600000)
  8. GO TO TCM POWER SOURCE CIRCUIT. Refer to «ECU Power Source Circuit»(ref-422469-S22048498922011092600000)
  9. REPLACE TCM. Refer to «REMOVAL»(ref-422436-S32730813102011092600000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT

  1. Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
  2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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  1. CONFIRM DTC Turn the ignition switch off and wait for 10 seconds. Turn the ignition switch to ON. Turn the ignition switch off and wait for 10 seconds. Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Confirm DTCs and freeze frame data. If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below. NOTE: If the reference pressure difference between the first and second checks is more than the specification, the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
  2. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: In the Evaporative System Check (Automatic Mode) a series of 5 steps is performed automatically by the Techstream. It takes a maximum of approximately 18 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Connect the Techstream to the DLC3. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending. HINT: If no pending DTC is displayed, perform the Monitor Confirmation after this repair is completed. After this confirmation, check for pending DTCs. If no DTC is displayed, the EVAP system is normal. NEXT: Go to next step
  3. PERFORM EVAP SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), the series of 5 Evaporative System Check steps are performed manually using the Techstream. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). Connect the Techstream to the DLC3. Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) Check the EVAP pressure in step 1/5. Result DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa-g (2.25 mmHg-g) or more Pressure sensor noising B *: The DTCs relating to the EVAP system displayed on the Techstream when checking. B --> See step 30 A: Go to next step
  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) Check the EVAP pressure in steps 1/5 and 2/5. Result DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/5. Then decreases to reference pressure standard* Not yet determined A P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Vacuum pump stuck ON B *: The DTCs related to the EVAP system are displayed on the Techstream when checking. HINT: The first reference pressure standard is the value determined in step 2/5. B --> See step 23 A: Go to next step
  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) HINT: Make a note of the pressures checked in steps "A" and "B" below. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (Step "A"). Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure standard (Step "B"). *1: The leak detection pump begins to operate at the time step 2/5 starts. Result DTC*2 Result Suspected Trouble Area Proceed to - EVAP pressure in step (B) is between -4.85 kPa-g and -1.06 kPa-g (-36.38 mmHg-g and -7.95 mmHg-g) Not yet determined A P043F and P2401 EVAP pressure in step (B) is -1.06 kPa-g (-7.95 mmHg-g) or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step (B) is less than -4.85 kPa-g (-36.38 mmHg-g) Reference orifice clogged C P2419 EVAP pressure in step (A) is more than -1.06 kPa-g (-7.95 mmHg-g) Vent valve stuck closed D *2: The DTCs related to the EVAP system are displayed on the Techstream when checking. B --> See step 11 C --> See step 30 D --> See step 19 A: Go to next step
  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) Check the EVAP pressure increase in step 3/5. Result DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 2/5 to step 3/5 Not yet determined A P2420 No variation in EVAP pressure even after proceeding from step 2/5 to step 3/5 Vent valve stuck open (vent) B P0451 No variation in EVAP pressure during steps 1/5 through 3/5 Canister pressure sensor malfunction C *: The DTCs related to the EVAP system are displayed on the Techstream when checking. B --> See step 20 C --> See step 30 A: Go to next step
  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) Wait until the EVAP pressure change is less than 0.1 kPa-g (0.75 mmHg-g) for 30 seconds. Measure the EVAP pressure and record it. HINT: A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes. NEXT: Go to next step
  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) Check the EVAP pressure in step 4/5. Result DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined A P0441 EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Problems in EVAP hose between purge VSV and intake manifold B P0441 Variation in EVAP pressure is less than 0.3 kPa-g (2.25 mmHg-g) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C *: The DTCs related to the EVAP system are displayed on the Techstream when checking. B --> See step 15 C --> See step 12 A: Go to next step
  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) Check the EVAP pressure in step 5/5. Compare the EVAP pressure in step 3/5 and the second reference pressure standard (step 5/5). Result DTC* Result Suspected Trouble Area Proceed to - EVAP pressure (step 3/5) lower than second reference pressure standard (step 5/5) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure (step 3/5) higher than [second reference pressure standard (step 5/5) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure (step 3/5) higher than second reference pressure standard (step 5/5) EVAP small leak B *: The DTCs related to the EVAP system are displayed on the Techstream when checking. A --> See step 36 B --> See step 12
  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) Check the EVAP pressure in step 3/5. Result DTC* Result Suspected Trouble Area Proceed to P043F EVAP pressure is less than [reference pressure standard] measured in step 2/5 Reference orifice high-flow A P2401 EVAP pressure is almost the same as [reference pressure standard] measured in step 2/5 Leak detection pump stuck OFF B *: The DTCs related to the EVAP system are displayed on the Techstream when checking. HINT: The first reference pressure standard is the value determined in step 2/5. A --> See step 30 B --> See step 23
  12. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Using the Techstream, turn off the purge VSV (EVAP VSV: OFF). Confirm that the purge VSV has no suction with your fingers. Using the Techstream, turn on the purge VSV (EVAP VSV: ON). Confirm that the purge VSV has suction with your fingers. Result Result Suspected Trouble Area Proceed to No suction when purge VSV turned OFF, and suction applied when turned ON - A Suction applied when purge VSV turned OFF Purge VSV stuck open B No suction when purge VSV turned ON Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold C Reconnect the hose. B --> See step 14 C --> See step 15 A: Go to next step
  13. CHECK FUEL CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specification. HINT: If an EVAP tester is available, check the fuel cap using the tester. Tighten the fuel cap. Remove the fuel cap and install it onto the fuel cap adaptor. Connect the EVAP tester pump hose to the adaptor, and pressurize the cap to 3.2 to 3.7 kPa-g (24 to 28 mmHg-g) using an EVAP tester pump. Seal the adaptor and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa-g (15 mmHg-g) or more, the fuel cap is normal. Result Test Result Suspected Trouble Area Proceed to Fuel cap correctly installed - A Fuel cap loose Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications B No fuel cap - C A --> See step 29 B --> See step 27 C --> See step 28
  14. INSPECT PURGE VSV Turn the ignition switch off. Disconnect the purge VSV connector. Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Confirm that the purge VSV has no suction with your fingers. Result Result Suspected Trouble Area Proceed to No suction ECM A Suction applied Purge VSV B Reconnect the purge VSV connector. Reconnect the hose. A --> See step 35 B --> See step 31
  15. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. Start the engine. Confirm that the hose has suction with your fingers. Result Result Suspected Trouble Area Proceed to Suction applied - A No suction Intake manifold EVAP hose between purge VSV and intake manifold B Reconnect the hose. B --> See step 26 A: Go to next step
  16. INSPECT PURGE VSV Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. Using compressed air, confirm that air flows from port A to port B. Result Result Suspected Trouble Area Proceed to Air flows - A No air flow Purge VSV B Install the purge VSV. B --> See step 31 A: Go to next step
  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV 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 B29-1 - B29-2 Ignition switch ON 11 to 14 V Result Result Suspected Trouble Area Proceed to Between 11 V and 14 V - A Other than result above Wire harness or connectors between purge VSV and ECM B Reconnect the purge VSV connector. B --> See step 32 A: Go to next step
  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector and the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B51-26 (PRG) - B29-2 Always Below 1 ohms B51-26 (PRG) - Body ground Always 10 kohms or higher B29-1 - Body ground Always 10 kohms or higher Reconnect the purge VSV connector. Reconnect the ECM connector. OK --> See step 35 NG --> See step 32
  19. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE) Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Vent Valve. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D61-7 (VPMP) - Body ground Vent valve ON 11 to 14 V Vent valve OFF Below 3 V Result Result Suspected Trouble Area Proceed to Between 11 V and 14 V when OFF Below 3 V when ON Vent valve A Below 3 V when OFF and ON ECM B A --> See step 22 B --> See step 35
  20. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE) Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Vent Valve. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D61-7 (VPMP) - Body ground Vent valve ON 11 to 14 V Vent valve OFF Below 3 V Result Result Suspected Trouble Area Proceed to Below 3 V when OFF and ON Power source of vent valve A Between 11 V and 14 V when OFF Below 3 V when ON Vent valve B Between 11 V and 14 V when OFF and ON ECM C B --> See step 22 C --> See step 35 A: Go to next step
  21. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the ignition switch off. Disconnect the canister pump module 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 N8-9 (VLVB) - Body ground Ignition switch ON 11 to 14 V Result Test Result Suspected Trouble Area Proceed to Between 11 V and 14 V Vent valve ECM A Between 0 V and 3 V Power source wire harness of vent valve B Reconnect the canister pump module connector. B --> See step 32 A: Go to next step
  22. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch off. Disconnect the canister pump module connector. Apply the battery voltage to terminals VLVB and VGND of the pump module. Touch the canister pump module to confirm the vent valve operation. Result Result Suspected Trouble Area Proceed to Operating Wire harness between vent valve and ECM A Not operating Vent valve B Reconnect the canister pump module connector. A --> See step 32 B --> See step 30
  23. PERFORM ACTIVE TEST USING TECHSTREAM (FOR CANISTER PUMP MODULE) Enter the following menus: Powertrain / Engine / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D61-9 (MPMP) - Body ground Leak detection pump ON (Active Test ON) 11 to 14 V Result Test Result Suspected Trouble Area Proceed to Between 0 V and 3 V when OFF Between 11 V and 14 V when ON - A Between 11 V and 14 V when OFF Between 0 V and 3 V when ON ECM B B --> See step 35 A: Go to next step
  24. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the canister pump module connector. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine / Active Test / Activate the Vacuum Pump. Turn the vacuum pump on (Active Test ON). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition N8-1 (MTRB) - Body ground Leak detection pump ON (Active Test ON) 11 to 14 V Result Test Result Suspected Trouble Area Proceed to Between 11 V and 14 V - A Between 0 V and 3 V Wire harness between ECM and leak detection pump B Reconnect the canister pump module connector. B --> See step 32 A: Go to next step
  25. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Disconnect the canister pump module connector. Turn the ignition switch off. Check the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N8-6 (MGND) - Body ground Always Below 1 ohms Result Test Result Suspected Trouble Area Proceed to Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness between leak detection pump and body ground B Reconnect the canister pump module connector. A --> See step 30 B --> See step 32
  26. INSPECT INTAKE MANIFOLD Stop the engine. Disconnect the EVAP hose from the intake manifold. Start the engine. Confirm that the port of the intake manifold has suction with your fingers. Result Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B Reconnect the EVAP hose. A --> See step 33 B --> See step 34
  27. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it until a few click sounds are heard. When replacing the fuel cap, use a fuel cap that meets OEM specifications, and tighten it until a few click sounds are heard. NEXT --> See step 37
  28. REPLACE FUEL CAP ASSEMBLY HINT: When installing the fuel cap, tighten it until a few click sounds are heard. NEXT --> See step 37
  29. LOCATE EVAP LEAK Disconnect the vent hose. Connect the EVAP pressure tester tool to the canister with the adapter. Pressurize the EVAP system by 3.2 to 3.7 kPa-g (24 to 28 mmHg-g). Apply soapy water to the piping and the connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates a leak point. Repair or replace the leak point. NEXT --> See step 37
  30. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the charcoal canister assembly, refer to «REMOVAL»(ref-422448-S41294506982011092600000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following parts: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; 3) the fuel tank vent hose. NEXT --> See step 37
  31. REPLACE PURGE VSV Replace the purge VSV, refer to «REMOVAL»(ref-422448-S29745568282011092600000) . NEXT --> See step 37
  32. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 37
  33. REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 37
  34. INSPECT INTAKE MANIFOLD Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. NEXT --> See step 37
  35. REPLACE ECM Replace the ECM, refer to «REMOVAL»(ref-422454-S15687586072011092600000) . NEXT --> See step 37
  36. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in. NEXT: Go to next step
  37. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: In the Evaporative System Check (Automatic Mode), the series of 5 Evaporative System Check steps are performed automatically. It takes a maximum of approximately 18 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear the DTCs, refer to «DTC CHECK / CLEAR»(ref-422301-S01463917032011092600000) . On the Techstream, enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes / Pending. HINT: If no pending DTC is found, the repair has been successfully completed. NEXT --> COMPLETED

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

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  1. INSPECT ECM (+B VOLTAGE) 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 D61-23 (+B) - B49-6 (E1) Ignition switch ON 11 to 14 V D61-24 (+B2) - B49-6 (E1) Ignition switch ON 11 to 14 V NG --> See step 2 OK --> See step 15
  2. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B49-6 (E1) - Body ground Always Below 1 ohms Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. INSPECT ECM (MREL VOLTAGE) 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 D60-36 (MREL) - B49-6 (E1) Ignition switch ON 11 to 14 V NG --> See step 8 OK: Go to next step
  4. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY (EFI RELAY) Inspect the EFI relay, refer to «INSPECTION»(ref-422454-S19847077362011092600000) . NG --> See step 16 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (EFI RELAY - ECM) Remove the engine room junction block assembly from the engine room relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2E-9 - D60-36 (MREL) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2E-9 or D60-36 (MREL) - Body ground Always 10 kohms or higher Reinstall the engine room junction block assembly. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (EFI RELAY - BODY GROUND) Remove the engine room junction block assembly from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2E-10 - Body ground Always Below 1 ohms Reinstall the engine room junction block assembly. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (EFI RELAY - ECM) Remove the engine room junction block assembly from the engine room relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2E-6 - D61-23 (+B) Always Below 1 ohms 2E-6 - D61-24 (+B2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2E-6 or D61-23 (+B) - Body ground Always 10 kohms or higher 2E-6 or D61-24 (+B2) - Body ground Always 10 kohms or higher Reinstall the engine room junction block assembly. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI RELAY)
  8. INSPECT ECM (IGSW VOLTAGE) 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 D60-21 (IGSW) - B49-6 (E1) Ignition switch ON 11 to 14 V NG --> See step 9 OK --> See step 17
  9. CHECK HARNESS AND CONNECTOR (ECM - IG2 RELAY) Remove the IG2 relay from the engine room relay block. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IG2 relay terminal 3 - D60-21 (IGSW) Always Below 1 ohms Reconnect the ECM connector. Reinstall the IG2 relay. NG --> See step 13 OK: Go to next step
  10. INSPECT RELAY (IG2 RELAY) Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Battery voltage is not applied between terminals 1 and 2 10 kohms or higher Battery voltage applied between terminals 1 and 2 Below 1 ohms Reinstall the IG2 relay. NG --> REPLACE RELAY (IG2 RELAY) OK: Go to next step
  11. CHECK HARNESS AND CONNECTOR (IG2 RELAY POWER SOURCE) Remove the IG2 relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition IG2 relay terminal 5 - Body ground Always 11 to 14 V Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IG2 RELAY) OK: Go to next step
  12. CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND) Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition IG2 relay terminal 2 - Body ground Always Below 1 ohms Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  13. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - IG2 RELAY) Remove the IG2 relay from the engine room relay block. Disconnect the ignition switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D24-6 (IG2) - IG2 relay terminal 1 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D24-6 (IG2) or IG2 relay terminal 1 - Body ground Always 10 kohms or higher Reinstall the IG2 relay. Reconnect the ignition switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  14. INSPECT IGNITION SWITCH ASSEMBLY Inspect the ignition switch assembly, refer to «INSPECTION»(ref-422452-S41207047002011092600000) . NG --> See step 18 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH ASSEMBLY - BATTERY)
  15. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422301-S23979484722011092600000)
  16. REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(ref-422454-S33968218332011092600000)
  17. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  18. REPLACE IGNITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422452-S40929404622011092600000)

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

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

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Scheme 149: PROCEDURE
Scheme 149: PROCEDURE
  1. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) Disconnect the fuel injector 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 B54-1 - Body ground Ignition switch ON 11 to 14 V B55-1 - Body ground Ignition switch ON 11 to 14 V B56-1 - Body ground Ignition switch ON 11 to 14 V B57-1 - Body ground Ignition switch ON 11 to 14 V Reconnect the fuel injector connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - FUEL INJECTOR) OK: Go to next step
  2. INSPECT FUEL INJECTOR (INJECTOR RESISTANCE) Inspect the fuel injector, refer to «INSPECTION - Step 1»(ref-422456-S30942402982011092600000) . NG --> See step 7 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the ECM connector. Disconnect the fuel injector connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B54-2 - B48-7 (#10) Always Below 1 ohms B55-2 - B48-8 (#20) Always Below 1 ohms B56-2 - B48-9 (#30) Always Below 1 ohms B57-2 - B48-10 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B54-2 or B48-7 (#10) - Body ground Always 10 kohms or higher B55-2 or B48-8 (#20) - Body ground Always 10 kohms or higher B56-2 or B48-9 (#30) - Body ground Always 10 kohms or higher B57-2 or B48-10 (#40) - Body ground Always 10 kohms or higher Reconnect the fuel injector connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B48-1 (E01) - Body ground Always Below 1 ohms B49-12 (E02) - Body ground Always Below 1 ohms Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT FUEL INJECTOR (INJECTION AND VOLUME) Check the fuel injector injection and volume, refer to «INSPECTION - Step 1»(ref-422456-S30942402982011092600000) . NG --> See step 7 OK --> See step 6
  6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422301-S23979484722011092600000)
  7. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-422456-S31838584772011092600000)

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

HINT

This chart is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to the problem symptoms table, refer to PROBLEM SYMPTOMS TABLE .

Scheme 150

Scheme 150: PROCEDURE
Scheme 150: PROCEDURE
  1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / All Data / Starter Signal. Read the value. OK Ignition Switch Position Starter Signal ON Close (Starter signal OFF) START Open (Starter signal ON) NG --> See step 2 OK --> See step 8
  2. INSPECT RELAY (ST RELAY VOLTAGE) Remove the ST relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition ST relay terminal 2 - Body ground Ignition switch START position 11 to 14 V Reinstall the ST relay. NG --> See step 3 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - ECM)
  3. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY) Disconnect the park/neutral position switch assembly connector. Remove the ST relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B5-9 - ST relay terminal 2 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B5-9 or ST relay terminal 2 - Body ground Always 10 kohms or higher Reconnect the park/neutral position switch assembly connector. Reinstall the ST relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Inspect the park/neutral position switch assembly, refer to «INSPECTION»(ref-422436-S01553183972011092600000) . NG --> See step 9 OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH) Disconnect the ignition switch assembly connector. Disconnect the park/neutral position switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D24-3 (ST1) - B5-4 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D24-3 (ST1) or B5-4 - Body ground Always 10 kohms or higher Reconnect the ignition switch assembly connector. Reconnect the park/neutral position switch assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - ECM) Disconnect the ignition switch assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D24-3 (ST1) - B51-24 (NSW) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D24-3 (ST1) or B51-24 (NSW) - Body ground Always 10 kohms or higher Reconnect the ignition switch assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. INSPECT IGNITION SWITCH ASSEMBLY Inspect the ignition switch assembly, refer to «INSPECTION»(ref-422452-S41207047002011092600000) . NG --> See step 10 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH ASSEMBLY)
  8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422301-S23979484722011092600000)
  9. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422436-S41680257952011092600000)
  10. REPLACE IGNITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-422452-S40929404622011092600000)

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

Scheme 151

Scheme 151: PROCEDURE
Scheme 151: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS). Connect the Techstream to the DLC3. Start the engine. Enter the following menus: Powertrain / Engine / Active Test / Active the VSV for Intake Control. Operate the VSV for ACIS. Check the VSV air flow when switching the VSV on and off. OK Test Condition Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through air filter NG --> See step 5 OK: Go to next step
  2. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) Check the vacuum hoses, refer to «ON-VEHICLE INSPECTION»(ref-422457-S02988803912011092600000) . NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
  3. INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) Inspect the intake air control valve, refer to «INSPECTION»(ref-422463-S08716294682011092600000) . NG --> See step 9 OK --> See step 4
  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422301-S23979484722011092600000)
  5. INSPECT VACUUM SWITCHING VALVE (VSV FOR ACIS) Inspect the VSV for ACIS, refer to «INSPECTION»(ref-422463-S11934546552011092600000) . NG --> See step 10 OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS VOLTAGE) Disconnect the VSV for ACIS 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 B58-2 - Body ground Ignition switch ON 11 to 14 V Reconnect the VSV for ACIS connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 3 FUSE - VSV FOR ACIS) OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM) Disconnect the VSV for ACIS connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition B58-1 - B51-27 (ACIS) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B58-1 or B51-27 (ACIS) - Body ground Always 10 kohms or higher Reconnect the VSV for ACIS connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  8. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)
  9. REPLACE INTAKE MANIFOLD. Refer to «REMOVAL»(ref-422463-S16295714212011092600000)
  10. REPLACE VACUUM SWITCHING VALVE. Refer to «REMOVAL»(ref-422463-S23779364702011092600000)

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

Scheme 152

Scheme 152: PROCEDURE
Scheme 152: PROCEDURE
  1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR AICS) Disconnect the 2 hoses from the VSV for air intake control valve. Turn the ignition switch to ON and turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for AICS. Check the operation of the VSV when the VSV is operated by the Techstream. Standard Techstream Operation Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through the air filter NG --> See step 4 OK: Go to next step
  2. INSPECT VACUUM TANK Inspect the vacuum tank, refer to «ON-VEHICLE INSPECTION»(ref-422463-S03231700622011092600000) . NG --> REPLACE AIR CLEANER CAP SUB-ASSEMBLY OK: Go to next step
  3. INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY Inspect the intake air control valve assembly, refer to «ON-VEHICLE INSPECTION»(ref-422470-S20593014742011092600000) . NG --> REPLACE NO. 3 INTAKE AIR CONTROL VALVE ASSEMBLY OK --> See step 7
  4. INSPECT VACUUM SWITCHING VALVE (VSV FOR AICV) Inspect the VSV for air intake control valve, refer to «ON-VEHICLE INSPECTION»(ref-422471-S35190337192011092600000) . NG --> REPLACE NO. 3 INTAKE AIR CONTROL VALVE ASSEMBLY OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (VSV FOR AICV VOLTAGE) Disconnect the VSV for air intake control valve 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 A10-1 - Body ground Ignition switch ON 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 3 FUSE - VSV FOR AIR INTAKE CONTROL VALVE) OK: Go to next step
  6. CHECK HARNESS AND CONNECTOR (VSV FOR AIR INTAKE CONTROL VALVE - ECM) Disconnect the VSV for air intake control valve connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A10-2 - B51-35 (AICV) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A10-2 or B51-35 (AICV) - Body ground Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
  7. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422301-S23979484722011092600000)
  8. REPLACE ECM. Refer to «REMOVAL»(ref-422454-S15687586072011092600000)

Inspection Method

Drive at 10km/h (6.25mph), depress the accelerator pedal by 1/2 to 3/4 and keep it in that position. Under these conditions, if the engine speed decreases to 1000RPM when the brake pedal is depressed, then the brake override system has been activated.

WARNINGWhen carrying out the inspection, use a place where you are able to carry it out safely and also pay close attention to your surroundings. Also, when driving make absolutely sure that all road traffic laws, such as speed limits, are observed.

HINT

  1. Under normal conditions, the Accelerator Position value changes in response to the Accel Sens. No. 1 Volt % value. For more information on the numerical values, refer to the Data List, refer to «DATA LIST / ACTIVE TEST»(ref-422301-S24251007742011092600000) .
  2. If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accel Sens. No. 1 Volt % changes but the value of Accelerator Position is constant, this confirms that brake override system has activated. (Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.)

Note. The brake override system restricts driving torque if the brake pedal is depressed when driving with the accelerator pedal depressed. If a customer reports experiencing loss of torque after the accelerator and brake pedals have both been intentionally depressed, explain to the customer that this is not a malfunction, and that the customer should avoid depressing both the accelerator and brake pedals at the same time. Example: While operating the accelerator pedal, the customer uses their left foot to operate the brake pedal.

More articles — Engine Control System (1AR-FE) (Diagnostic Codes (P1604 - U0101) & Circuit Tests)