Engine Control System (Diagnostic Codes (P1604-P2610) & Circuit Tests)): Diagnosis

INSPECTION PROCEDURE

HINT

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 the DTC can be stored as a result of certain user actions, even if the DTC is output, if the customer makes no mention of problems, clear the DTC without performing any troubleshooting and return the vehicle to the customer.
If any other DTCs are output, perform troubleshooting for those DTCs first.
When the Data List item "Immobilizer Fuel Cut" is ON, the engine cannot be started.
Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data. Refer to «FREEZE FRAME DATA»(ref-511384-S31720518352012102600000) .
When confirming the freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
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.
If the malfunction does not reoccur, carefully check the vehicle conditions from when the malfunction occurred using freeze frame data.
When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.
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.

Scheme 143

Scheme 144

Scheme 145

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
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 Crankshaft position sensor ECM 4 to 9 60 to 250 RPM (engine cranks but no initial combustion*1) Fuel pump control system Ignition system Immobilizer system (w/ immobilizer 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 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 Engine assembly Engine assembly (excess friction) Cranking speed too high Engine assembly Engine assembly (compression loss) There is no initial combustion Fuel supply problem Cannot maintain pressure due to pressure regulator malfunction Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump 35 to 48 Immobilizer system Immobilizer system (w/ immobilizer system) Ignition system malfunction Spark plug Crankshaft position sensor Ignition coil assembly Engine stalls after starter turnoff Air suction Intake system connections 49 to 54 Deposits in throttle body Throttle body VVT valve does not return properly Camshaft timing oil control valve assembly 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 55 to 68 Mass air flow meter malfunction Mass air flow meter Abnormal A/F learning value Air fuel ratio sensor Deviation from fuel injection characteristics Fuel injector 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 A/F learning value Fuel injector 83 to 90 91 to 98 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 99 to 101 Fuel system troubleshooting C Injection signal system malfunction Fuel injector Crankshaft position sensor Camshaft position sensor ECM 70 to 73 Intake system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 80 to 82 102 to 104 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 74 to 79 105 to 110 NOTE: Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 146

Scheme 146: PROCEDURE

Scheme 147

Scheme 148

Scheme 149

Scheme 150

CHECK ANY OTHER DTCS OUTPUT AND RECORD FREEZE FRAME DATA Connect the Techstream to the DLC3. Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read 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 then the DTC is stored. RESULT Result Proceed to P1604 A P1604 and other DTCs B B --> See step 111 A: Go to next step
CHECK ENGINE IMMOBILIZER SYSTEM HINT: If the vehicle is not equipped with an immobilizer system, proceed to the next step (OK). Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Immobilizer Fuel Cut. Read the value displayed on the Techstream. OK Immobilizer Fuel Cut is OFF HINT: If the engine is cranked immediately after reconnecting the battery cable (key verification for immobilizer 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 112 OK: Go to next step
CHECK MALFUNCTION CONDITION Confirm the problem symptoms. RESULT Result Proceed to Freeze frame data exists, but the starting difficulty cannot be reproduced and it is unknown what kind of starting difficulty occurred A The problem symptoms can be reproduced, or the malfunction conditions are known B B --> See step 25 A: Go to next step
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Engine Speed Battery Voltage All 5 sets of freeze frame data are 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 ECM B 60 to 250 RPM (engine cranks but no initial combustion) - Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system C 250 RPM or higher (combustion occurs but initial combustion and starter turnoff occur late) - Engine assembly Engine coolant temperature sensor 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. Immobilizer 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 49 A --> CHARGE OR REPLACE BATTERY
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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. 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 ASSEMBLY OR BATTERY A --> See step 113
CHECK SENSOR INSTALLATION (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 114 OK: Go to next step
INSPECT 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 115 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S23532908192012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 116 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Fuel Pump/Speed Status Difference between Coolant Temp and Intake Air is 10°C (18°F) or more*1 Coolant Temp is 125°C (257°F) or more, or lower than outside temperature*3 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 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. *3: Use an actual outside temperature estimated from the Initial Intake Air Temp, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. B --> See step 11 C --> See step 118 A --> See step 117
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Disconnect the connector from the fuel suction tube. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H13-4 - Body ground Active Test is being performed 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector: (to Fuel Pump) 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. NG --> See step 119 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-511389-S27012263192012102600000) . 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. NG --> See step 175 OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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
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
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Intake Air Coolant Temp Long FT #1 Engine Speed Difference between Coolant Temp and Intake Air is 10°C (18°F) or more Coolant Temp is 125°C (257°F) or more, or lower than outside temperature*1 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 B -15 to +15% Minimum speed is 300 RPM or more*2 Engine assembly C Minimum speed is below 300 RPM Fuel system Intake air system D Difference between Coolant Temp and Intake Air is less than 10°C (18°F) - -15% or less, or +15% or more - Fuel pump control system Fuel injector B -15 to +15% Minimum speed is 300 RPM or more*2 Engine assembly C Minimum speed is below 300 RPM Fuel system Intake air system D HINT: *1: Use an actual outside temperature estimated from the Initial Intake Air Temp, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected. *2: Compression loss may have occurred in the engine assembly. B --> See step 16 C --> CHECK AND REPAIR ENGINE ASSEMBLY D --> See step 18 A --> See step 120
INSPECT FUEL INJECTOR Check that no carbon is stuck to the fuel injector. OK No carbon present. NG --> See step 121 OK: Go to next step
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
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-511384-S31720518352012102600000) . RESULT Freeze Frame Data Item 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 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. *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
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION»(ref-511396-S21237912162012102600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Standard 147 kPa (1.5 kgf/cm 2 ) or higher (5 minutes after stopping the engine) HINT: If the engine cannot be started, read the values after cranking the engine. OK --> See step 24 NG --> See step 171
INSPECT FUEL INJECTOR 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 may have a sealing problem. B --> See step 22 A: Go to next step
INSPECT FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(ref-511393-S20850519882012102600000) . RESULT Result Proceed to Abnormal A Normal B B --> See step 22 A --> See step 172
INSPECT 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 122
CHECK INTAKE SYSTEM Check the intake system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511394-S02699951012012102600000) . OK No leak in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
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
CONFIRM PROBLEM SYMPTOM 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 (flywheel) 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 Pressure regulator fuel pressure maintenance Fuel injector 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 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 49 E --> See step 55 A: Go to next step
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.*1 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 or flywheel sub-assembly Starter B A noise indicating that the starter pinion gear is extending is not heard Battery Starter Starter system C HINT: *1: 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
INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(ref-511403-S24142971182012102600000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
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 123
INSPECT STARTER (STARTER PINION GEAR) Remove the starter. Refer to «REMOVAL»(ref-511390-S08729012702012102600000) . Check for starter pinion gear wear and damage. OK There is no wear or damage. NG --> See step 125 OK --> See step 124
INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(ref-511403-S24142971182012102600000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
INSPECT STARTER Inspect the starter. Refer to «INSPECTION»(ref-511390-S12958855672012102600000) . NG --> See step 127 OK --> See step 126
PERFORM SIMULATION TEST Check the cranking speed. RESULT Problem Symptom Suspected Area Proceed to Cranking speed is slow (100 RPM or less) Battery Starter Excess engine friction A Cranking speed is fast (300 RPM or more)*1 Engine compression loss B HINT: *1: If the cranking speed is fast, there may be compression loss. B --> CHECK AND REPAIR ENGINE ASSEMBLY A: Go to next step
INSPECT BATTERY Inspect the battery. Refer to «ON-VEHICLE INSPECTION»(ref-511403-S24142971182012102600000) . NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
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 --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 128
INSPECT FUEL INJECTOR Using a sound scope or screwdriver, check for an injector operating sound while cranking the engine. OK Fuel injector operating sound is heard. NG --> See step 47 OK: Go to next step
CHECK FUEL PRESSURE Inspect the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . NG --> See step 45 OK: Go to next step
CHECK SPARK PLUG AND SPARK Check for sparks. Refer to «ON-VEHICLE INSPECTION»(ref-511379-S30505875502012102600000) . NG --> See step 41 OK: Go to next step
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 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. *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 69, perform fuel system troubleshooting C (steps 70 to 73). B --> See step 40 C --> See step 69 A: Go to next step
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION»(ref-511396-S21237912162012102600000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. RESULT Result Proceed to 147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine) A*1 Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine) B HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 69, perform fuel system troubleshooting C (steps 70 to 73). A --> See step 69 B --> See step 129
INSPECT FUEL INJECTOR 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*1 HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *1: From step 69, perform fuel system troubleshooting C (steps 70 to 73). B --> See step 69 A --> See step 130
INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511379-S33268528002012102600000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 131 OK: Go to next step
READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select [Engine Speed] of the Data List. Start the engine. While running the engine, read the [Engine Speed] value. OK 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 132 OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000) . 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. NG --> See step 133 OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Check the harnesses and connectors, referring to DTC P0351 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-511389-S34952127862012102600000) . 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 assembly, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 69 69 and perform troubleshooting for the ignition system (steps 74 74 to 79). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 134
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. When performing the Active Test, check for an operating sound from the fuel pump. OK Control the Fuel Pump / Speed 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 135 OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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 69 69 and perform fuel system troubleshooting C (steps 70 70 to 73). B --> See step 136 A --> REPAIR OR REPLACE FUEL LINE
READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select [Engine Speed] of the Data List. Start the engine. While running the engine, read the [Engine Speed] value. OK 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
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-511389-S27012263192012102600000) . 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. NG --> See step 176 OK --> See step 138
INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «PROCEDURE - Step 6»(ref-511389-S08632134142012102600000) . NG --> See step 54 OK: Go to next step
CHECK INTAKE SYSTEM Check for air leakage in the intake system (vacuum hose disconnection, cracks, damaged gaskets, etc.). Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-511394-S02699951012012102600000) . 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 (differ by more than 15%) when idling (intake air volume is small) and almost the same as the normal values when racing the engine (for example, when maintaining a speed of 3000 RPM) (intake air volume is high), air leakage may be present. OK There is no air leakage. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
INSPECT 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 7°. 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-511384-S36374632912012102600000) . B --> See step 53 A: Go to next step
INSPECT THROTTLE BODY Check if carbon is in the air flow passage. OK No carbon present. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Using the Techstream, select the [Control the VVT Linear (Bank1)] Active Test. HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in P or N (neutral). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Techstream Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls RESULT Result Proceed to NG A OK B*1 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. *1: From step 69, perform intake system troubleshooting (steps 80 to 82). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 83 to 90). B --> See step 69 A --> See step 139
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Check the harnesses and connectors, referring to DTC P0102 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S34696711692012102600000) . 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 69 69 and perform intake system troubleshooting (steps 80 to 82). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 83 83 to 90). NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 140
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-511385-S07217628132012102600000) . 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 69 69 and perform fuel system troubleshooting A (steps 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 102 to 104), and ignition system troubleshooting (steps 105 105 to 110 110 ), in that order. NG --> See step 141 OK: Go to next step
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0115 inspection procedure. Refer to «INSPECTION PROCEDURE»(ref-511389-S38110216012012102600000) . 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98 98 ), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 102 to 104), and ignition system troubleshooting (steps 105 105 to 110 110 ), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «PROCEDURE - Step 6»(ref-511389-S08632134142012102600000) . 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98 98 ), fuel system troubleshooting B (steps 99 99 to 101), intake system troubleshooting (steps 102 102 to 104), and ignition system troubleshooting (steps 105 to 110 110 ), in that order. NG --> See step 142 OK: Go to next step
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Check the harnesses and connectors, referring to DTC P0102 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S34696711692012102600000) . 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98 98 ), fuel system troubleshooting B (steps 99 99 to 101), intake system troubleshooting (steps 102 102 to 104), and ignition system troubleshooting (steps 105 105 to 110 110 ), in that order. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select and read [Long FT #1] and [Atmosphere Pressure] in the Data List. 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 ECM A Atmosphere Pressure 80 kPa or less (when altitude is 0 m) Both Data List items listed above Values are other than above - B B --> See step 63 A: Go to next step
PERFORM SIMULATION TEST Remove the EFI and ETCS fuses from the engine room relay block. After 60 seconds or more elapse, install the EFI 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 63 A: Go to next step
INSPECT AIR FUEL RATIO SENSOR Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel System Status #1. Confirm that Fuel System Status #1 is CL. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 and ECT / Active Test / Control the Injection Volume. 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 +12% Air fuel ratio sensor output voltage is below 3.1 V -12% Air fuel ratio sensor output voltage is higher than 3.4 V RESULT Result Proceed to Normal A Abnormal B 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98 98 ), fuel system troubleshooting B (steps 99 to 101 101 ), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. B --> See step 143 A: Go to next step
PERFORM SIMULATION TEST Check if the idling speed is stable after starting the engine. OK Engine speed is stable. HINT: After replacing the fuel injector 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. NG --> See step 145 OK --> See step 144
CHECK FUEL PRESSURE Inspect the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . NG --> See step 68 OK: Go to next step
INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511379-S33268528002012102600000) . 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), 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 69 69 and perform fuel system troubleshooting A (steps 91 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. B --> See step 146 C --> See step 147 A: Go to next step
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 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. *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 69, perform fuel system troubleshooting A (steps 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. B --> See step 67 C --> See step 69 A: Go to next step
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . 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*1 Less than 147 kPa (1.5 kgf/cm 2 ) (5 minutes after stopping the engine) B HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 69, perform fuel system troubleshooting A (steps 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. A --> See step 69 B --> See step 148
INSPECT FUEL INJECTOR 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*1 HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *1: From step 69, perform fuel system troubleshooting A (steps 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. B --> See step 69 A --> See step 149
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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 69 and perform fuel system troubleshooting A (steps 91 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. B --> See step 150 A --> REPAIR OR REPLACE FUEL LINE
CHECK MALFUNCTION CONDITION If the malfunction could not be identified during the inspection in steps 38, 39, 40 and 46, perform fuel system troubleshooting C (steps 70 to 73). RESULT Performed Step Troubleshooting by System Procedure Proceed to Steps 38, 39, 40 and 46 Fuel system troubleshooting C 70 to 73 A If the malfunction could not be identified during the inspection in step 44, perform ignition system troubleshooting (steps 74 to 79). RESULT Performed Step Troubleshooting by System Procedure Proceed to Step 44 Ignition system troubleshooting 74 to 79 B If the malfunction could not be identified during the inspection in steps 53 and 54, perform intake air system troubleshooting (steps 80 to 82). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 83 to 90). RESULT Performed Step Troubleshooting by System Procedure Proceed to Step 53 and 54 Intake air system troubleshooting 80 to 82 C Fuel system troubleshooting A 83 to 90 If the malfunction could not be identified during the inspection in steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68, perform fuel system troubleshooting A (steps 91 to 98), fuel system troubleshooting B (steps 99 to 101), intake air system troubleshooting (steps 102 to 104), and ignition system troubleshooting (steps 105 to 110), in that order. RESULT Performed Step Troubleshooting by System Procedure Proceed to Steps 55, 56, 57, 58, 61, 62, 64, 65, 66, 67 and 68 Fuel system troubleshooting A 91 to 98 D Fuel system troubleshooting B 99 to 101 Intake air system troubleshooting 102 to 104 Ignition system troubleshooting 105 to 110 B --> See step 74 C --> See step 80 D --> See step 91 A: Go to next step
INSPECT FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(ref-511393-S20850519882012102600000) . NG --> See step 177 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT) Check the harnesses and connectors, referring to DTC P0300 inspection procedure. Refer to «PROCEDURE - Step 10»(ref-511389-S27012263192012102600000) . 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. NG --> See step 178 OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 73 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-511385-S34497447542012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 151 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
CHECK SENSOR INSTALLATION (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 152 OK: Go to next step
CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) Check the tightening and installation condition of the camshaft position sensor bolt. Check the connection of the camshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 153 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S23532908192012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-511389-S10966450102012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 79 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-511385-S34497447542012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 154 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches turned off Using the Techstream, select and read [ISC Learning Value] in the Data List. 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 82 A: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-511378-S29302409912012102600000) . NG --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 155
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-511385-S07217628132012102600000) . NG --> See step 156 OK: Go to next step
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine. STANDARD 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 89 OK: Go to next step
READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select and read [Long FT #1] in the Data List. 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 B B --> See step 157 A: Go to next step
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
CHECK SENSOR INSTALLATION (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 158 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S23532908192012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 159 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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 90 A --> REPAIR OR REPLACE FUEL LINE
INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-511393-S17514318892012102600000) . 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. NG --> See step 163 OK --> See step 160
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-511396-S03674563012012102600000) . 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 97 A: Go to next step
READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Using the Techstream, select and read [Long FT #1] in the Data List. 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 B B --> See step 170 A: Go to next step
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
CHECK SENSOR INSTALLATION (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 161 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S23532908192012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 162 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON and turn the Techstream on. Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test. 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
INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-511393-S17514318892012102600000) . 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. NG --> See step 173 OK: Go to next step
CHECK PURGE VSV Disconnect the vacuum hose (on the canister side) of the purge VSV. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 Purge VSV Start the engine. Idle the engine. Disconnect the connector of the purge VSV. Check if air flows through the purge VSV. OK Air does not flow Connect the connector of the purge VSV. Connect the vacuum hose of the purge VSV. HINT: When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . NG --> See step 164 OK: Go to next step
CHECK FUEL INJECTOR 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 may have a sealing problem. B --> See step 101 A --> See step 165
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 102 A --> CLEAN INTAKE VALVE
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Using the Techstream, select and read [ISC Learning Value] in the Data List. 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 104 A: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Inspect the compression. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-511378-S29302409912012102600000) . NG --> CHECK AND REPAIR ENGINE ASSEMBLY OK --> See step 166
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-511385-S07217628132012102600000) . NG --> See step 167 OK: Go to next step
CHECK SENSOR INSTALLATION (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 168 OK: Go to next step
CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR) Check the tightening and installation condition of the camshaft position sensor bolt. Check the connection of the camshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 169 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0335 inspection procedure. Refer to «PROCEDURE - Step 3»(ref-511389-S23532908192012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR - ECM) Check the harnesses and connectors, referring to DTC P0340 inspection procedure. Refer to «PROCEDURE - Step 2»(ref-511389-S10966450102012102600000) . 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. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-511385-S13750803862012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 110 OK --> END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
CHECK CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-511385-S34497447542012102600000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 174 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
REPAIR ENGINE IMMOBILIZER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-511392-S26181269702012102600000)
CHECK STARTER SIGNAL CIRCUIT. Refer to «Starter Signal Circuit»(ref-511387-S21312693492012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01206664542012102600000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-511385-S13750803862012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
CLEAN OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)
INSPECT STARTER. Refer to «INSPECTION»(ref-511390-S12958855672012102600000)
REPLACE FLYWHEEL SUB-ASSEMBLY OR DRIVE PLATE AND RING GEAR. Refer to «REMOVAL»(ref-511378-S00684377632012102600000)
REPLACE STARTER. Refer to «REMOVAL»(ref-511390-S08729012702012102600000)
CHECK STARTER SIGNAL CIRCUIT. Refer to «Starter Signal Circuit»(ref-511387-S21312693492012102600000)
REPLACE STARTER. Refer to «REMOVAL»(ref-511390-S08729012702012102600000)
INSPECT STARTER. Refer to «INSPECTION»(ref-511390-S12958855672012102600000)
REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-511393-S20824339862012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
CHECK CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-511389-S36898240992012102600000)
CHECK IGNITION COIL POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-511389-S34952127862012102600000)
REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-511385-S13750803862012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE. Refer to «REMOVAL»(ref-511385-S15814011642012102600000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-511385-S03018773852012102600000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-511385-S36000517632012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-511397-S30873308072012102600000)
REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-511393-S20824339862012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
CHECK FUEL PUMP CONTROL CIRCUIT. Refer to «Fuel Pump Control Circuit»(ref-511387-S23939090992012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01206664542012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01535171662012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
CHECK VALVE TIMING. Refer to «PROCEDURE - Step 4»(ref-511389-S24668794042012102600000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01206664542012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-511393-S20824339862012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01206664542012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)
INSPECT PURGE VSV. Refer to «INSPECTION»(ref-511382-S05123661002012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
CHECK VALVE TIMING. Refer to «PROCEDURE - Step 4»(ref-511389-S24668794042012102600000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-511385-S20412119702012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01206664542012102600000)
SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-511385-S01535171662012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
REPLACE FUEL PRESSURE REGULATOR. Refer to «REMOVAL»(ref-511393-S20824339862012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)
CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
CHECK FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-511387-S27198894842012102600000)

Note. After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Refer to PRECAUTION .

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the ETCS malfunctions.

Scheme 151

Scheme 151: PROCEDURE

Scheme 152

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
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 B24-2 (M+) - B33-42 (M+) Always Below 1 ohms B24-1 (M-) - B33-41 (M-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B24-2 (M+) or B33-42 (M+) - Body ground Always 10 kohms or higher B24-1 (M-) or B33-41 (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
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
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
REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)
REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
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 153

Scheme 153: PROCEDURE

CHECK 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 and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P2109 is output A P2109 and other DTCs are output B B --> See step 5 A: Go to next step
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-511384-S31720518352012102600000) . HINT: Be sure to confirm "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
REMOVE FOREIGN OBJECT (CLEAN THROTTLE BODY) 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 valve. 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. NEXT: Go to next step
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Remove the EFI MAIN and ETCS fuses at the same time, wait 60 seconds or more, and then reinstall the fuses to reset the ISC learning value. Connect the Techstream to the DLC3. Start the engine and fully warm it up. Turn the Techstream on. 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. Enter the following menus: Powertrain / Engine and ECT / Data List / ISC Learning Value. Read the value. OK The value is half of "ISC Learning Value" recorded in the freeze frame data or less. NG --> See step 6 OK --> END
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-511385-S41241468102012102600000)

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) .

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

HINT

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

Scheme 154

Scheme 154: PROCEDURE

READ VALUE USING TECHSTREAM (+BM VOLTAGE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / +BM Voltage. Read the value displayed on the Techstream. Standard voltage 11 to 14 V NG --> See step 2 OK --> See step 4
CHECK HARNESS AND CONNECTOR (ECM - BATTERY, BODY GROUND) Disconnect the ECM connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A36-3 (+BM) - Body ground Always 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B33-43 (ME01) - Body ground Always Below 1 ohms B33-104 (E1) - Body ground Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)

HINT

Refer to "Data List / Active Test" [Throttle Position Commanded, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open) and Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-511384-S23597167722012102600000) .
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

Scheme 155

Scheme 155: PROCEDURE

Scheme 156

READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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 4.8 V TEXT IN ILLUSTRATION *a Depressed *b Released NG --> See step 2 OK --> See step 8
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 A2-6 (VPA) - A36-55 (VPA) Always Below 1 ohms A2-5 (EPA) - A36-59 (EPA) Always Below 1 ohms A2-4 (VCPA) - A36-57 (VCPA) Always Below 1 ohms A2-3 (VPA2) - A36-56 (VPA2) Always Below 1 ohms A2-2 (EPA2) - A36-60 (EPA2) Always Below 1 ohms A2-1 (VCP2) - A36-58 (VCP2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A2-6 (VPA) or A36-55 (VPA) - Body ground Always 10 kohms or higher A2-5 (EPA) or A36-59 (EPA) - Body ground Always 10 kohms or higher A2-4 (VCPA) or A36-57 (VCPA) - Body ground Always 10 kohms or higher A2-3 (VPA2) or A36-56 (VPA2) - Body ground Always 10 kohms or higher A2-2 (EPA2) or A36-60 (EPA2) - Body ground Always 10 kohms or higher A2-1 (VCP2) or A36-58 (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
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 A2-4 (VCPA) - A2-5 (EPA) Ignition switch ON 4.5 to 5.5 V A2-1 (VCP2) - A2-2 (EPA2) Ignition switch ON 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Accelerator Pedal Position Sensor) Reconnect the accelerator pedal position sensor connector. NG --> See step 6 OK: Go to next step
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly. Refer to «REMOVAL»(ref-511385-S19731498332012102600000) . NEXT: Go to next step
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 DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Read DTCs. RESULT Result Proceed to P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 A No output B B --> END A --> See step 7
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)

HINT

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

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
A low A/F sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
A high A/F sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.

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

HINT

Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

DTC SUMMARY

DTC No.	Monitoring Item	Malfunction Detection Condition	Trouble Area	Detection Timing	Detection Logic
P2420	Vent valve stuck open (vent)	Following condition met during key-off EVAP monitor: EVAP pressure change when vent valve closed (ON) less than 0.3 kPa(gauge) [2.25 mmHg(gauge)]	Canister pump module (Reference orifice, leak detection pump, vent valve) Connector/wire harness (Canister pump module - ECM) Canister (filter inside canister clogged) ECM	While ignition switch off	2 trip

HINT

The vent valve is built into the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

DTC No.	Monitoring Item	Malfunction Detection Condition	Trouble Area	Detection Timing	Detection Logic
P2610	Soak timer (built into ECM)	ECM internal malfunction	ECM	Engine running	2 trip

HINT

DTC P2610 is stored if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is necessary.
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
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 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

Scheme 162

Scheme 163

Scheme 164

Scheme 165

Scheme 166

Scheme 167

Scheme 168

Scheme 169

Scheme 170

Scheme 171

Scheme 172

Scheme 173

Scheme 174

Scheme 175

Scheme 176

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 and ECT / 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 greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 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 fuel tank leak check 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. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the EVAP SYSTEM CHECK is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. HINT: If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal. NEXT: Go to next step
PERFORM EVAP SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), the series of 6 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 fuel tank leak check 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. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-511384-S36374632912012102600000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 1/6) Check the EVAP pressure in step 1/6. RESULT DTC *1 Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa(gauge) [2.25 mmHg(gauge)] or more Canister pressure sensor signal noise B (P0452 or P0453) *2 EVAP pressure is below 42.1 kPa(abs) [315.7 mmHg(abs)] or 123.8 kPa(abs) [928.5 mmHg(abs)] or more EVAP pressure deviates +/-10 kPa [+/-75 mmHg] from actual atmosphere pressure *3 Canister pressure sensor or its circuit has malfunction C *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. *2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the ignition switch is turned to ON. HINT: *3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [525 to 825 mmHg(abs)]. This varies by weather. B --> See step 38 C --> See step 12 A: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 1/6 TO 2/6) Check the EVAP pressure in steps 1/6 and 2/6. RESULT DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure standard Not yet determined A P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. HINT: The first reference pressure standard is the value determined in step 2/6. B --> See step 31 A: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 2/6) HINT: Make a note of the pressures checked in inspection items (A) and (B) below. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A). *1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B). RESULT DTC*2 Result Suspected Trouble Area Proceed to - EVAP pressure in inspection item (B) is between -4.85 kPa(gauge) and -1.057 kPa(gauge) [-36.4 mmHg(gauge) and -7.93 mmHg(gauge)] Not yet determined A P043F and P2401 EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.93 mmHg(gauge)] or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in inspection item (B) is less than -4.85 kPa(gauge) [-36.4 mmHg(gauge)] Reference orifice clogged C P2419 EVAP pressure in inspection item (A) is more than -1 kPa(gauge) [-7.5 mmHg(gauge)] Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) D *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 11 C --> See step 38 D --> See step 13 A: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 2/6 to step 3/6 Not yet determined A P2420 No variation in EVAP pressure even after proceeding from step 2/6 to step 3/6 Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged B P0451 No variation in EVAP pressure during steps 1/6 through 3/6 Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 27 C --> See step 15 A: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is less than 0.12 kPa(gauge) [0.9 mmHg(gauge)] 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
PERFORM EVAP SYSTEM CHECK (STEP 4/6) Check the EVAP pressure in step 4/6. RESULT DTC*1 Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6 Not yet determined A P0441 *2 EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6 Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM B P0441 Variation in EVAP pressure is less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] for 10 seconds, after proceeding from step 3/6 to step 4/6 Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV ECM C *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test results were nearly borderline values. B --> See step 22 C --> See step 17 A: Go to next step
PERFORM EVAP SYSTEM CHECK (STEP 5/6) Check the EVAP pressure in step 5/6. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6). RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure from step 3/6 lower than second reference pressure (step 5/6) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure from step 3/6 higher than [second reference pressure (step 5/6) x 0.35] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure from step 3/6 higher than second reference pressure (step 5/6) EVAP small leak B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. A --> See step 43 B --> See step 17
PERFORM EVAP SYSTEM CHECK (STEP 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured in step 2/6 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured in step 2/6 Leak detection pump stuck off B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. HINT: The first reference pressure standard is the value determined in step 2/6. A --> See step 38 B --> See step 31
INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure. Refer to «INSPECTION PROCEDURE»(ref-511388-S35537817772012102600000) . NEXT --> See step 48
INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) 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 Condition Tester Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND Operating Wire harness or connector between vent valve and ECM Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A36-42 (VPMP) - H20-8 (VGND) Always Below 1 ohms A36-42 (VPMP) or H20-8 (VGND) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A NG Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to H20-6 (MGND) - Body ground Always Below 1 ohms Canister pump module Wire harness or connector between canister pump module and ECM ECM A 10 kohms or higher Wire harness or connector between canister pump module and body ground B B --> See step 40 A: Go to next step
CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A36-34 (MPMP) - H20-1 (MTRB) Always Below 1 ohms Canister pump module ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B A --> See step 45 B --> See step 40
PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control. Disconnect the hose (connected to the canister) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Hose (to Canister) Start the engine. Using the Techstream, turn off the purge VSV (Activate the VSV for EVAP Control: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (Activate the VSV for EVAP Control: ON). Use your finger to confirm that the purge VSV has suction. RESULT Test Result Suspected Trouble Area Proceed to No suction when purge VSV turned off, and suction applied when turned on Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM A Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister assembly B Suction applied when purge VSV turned off Purge VSV stuck open C No suction when purge VSV turned on Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold D B --> See step 20 C --> See step 21 D --> See step 23 A: Go to next step
INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister. Refer to «INSPECTION»(ref-511382-S41572256462012102600000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
CHECK FUEL TANK CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications. Tighten the fuel cap firmly (only one click sound could be heard). HINT: If an EVAP tester is available, check the fuel cap using the Techstream. Remove the fuel cap and install it onto a fuel cap adapter. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) [24 to 28 mmHg(gauge)] using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] 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 Defective fuel cap - B No fuel cap - C A --> See step 37 B --> See step 35 C --> See step 36
INSPECT PURGE VSV Turn the ignition switch off. Disconnect the purge VSV connector. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 Connector *3 Purge VSV Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Use your finger to confirm that the purge VSV has no suction. RESULT Test Result Suspected Trouble Area Proceed to No suction Wire harness or connector between canister pump module and ECM (short to ground) ECM A Suction applied Purge VSV B A --> See step 26 B --> See step 39
INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Hose (to intake manifold) Start the engine. Use your finger to confirm that the hose has suction. RESULT Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between purge VSV and intake manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B B --> See step 34 A: Go to next step
INSPECT PURGE VSV Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV Confirm that air flows from port E to port F. RESULT Test Result Condition Suspected Trouble Area Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM A No air flow Battery voltage is applied to purge VSV terminals Purge VSV B B --> See step 39 A: Go to next step
CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. Turn the ignition switch to ON. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Purge VSV) Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to B21-2 - Body ground Ignition switch ON 11 to 14 V Purge VSV power source normal Wire harness or connector between purge VSV and ECM A Other than result above Wire harness or connectors between purge VSV and battery B B --> See step 40 A: Go to next step
CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector. Disconnect the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition B21-1 - B33-49 (PRG) Always Below 1 ohms B21-1 or B33-49 (PRG) - Body ground Always 10 kohms or higher OK --> See step 47 NG --> See step 40
INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the ignition switch off. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) Disconnect the canister pump module connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to H20-9 (VLVB) - Body ground Ignition switch ON 11 to 14 V Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM A Below 3 V Power source wire harness of vent valve B B --> See step 40 A: Go to next step
INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) 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 Condition Tester Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND Operating Wire harness or connector between vent valve and ECM Canister (charcoal filter inside canister) clogged ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the ignition switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to A36-42 (VPMP) - H20-8 (VGND) Always Below 1 ohms Canister (charcoal filter inside canister) clogged ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister. Refer to «INSPECTION»(ref-511382-S41572256462012102600000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Turn the ignition switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) Turn the ignition switch to ON. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to H20-1 (MTRB) - Body ground Leak detection pump on and off (Active Test ON and OFF) Below 3 V when OFF 9 to 14 V when ON Wire harness or connector between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness or connector between leak detection pump and ECM ECM B 9 to 14 V when OFF and ON ECM C B --> See step 33 C --> See step 47 A: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the ignition switch off. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to H20-6 (MGND) - Body ground Always Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness or connector between canister pump module and body ground B A --> See step 38 B --> See step 40
CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the ignition switch off. Disconnect the canister pump module connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A36-34 (MPMP) - H20-1 (MTRB) Always Below 1 ohms A36-34 (MPMP) or H20-1 (MTRB) - Body ground Always 10 kohms or higher RESULT Result Suspected Trouble Area Proceed to OK ECM A NG Wire harness or connector between ECM and canister pump module B A --> See step 47 B --> See step 40
INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Stop the engine. Disconnect the EVAP hose from the intake manifold. Start the engine. Use your finger to confirm that the port of the intake manifold has suction. RESULT Tester Connection Suspected Trouble Area Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B A --> See step 41 B --> See step 42
CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY HINT: When reinstalling the fuel cap, tighten it firmly (only one click sound could be head). When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly. NEXT --> See step 48
REPLACE FUEL TANK CAP ASSEMBLY HINT: When installing the fuel cap, tighten it firmly (only one click sound could be head). NEXT --> See step 48
LOCATE EVAP LEAK PART Disconnect the vent hose. Connect the EVAP pressure tester tool to the canister pump module with the adapter. TEXT IN ILLUSTRATION *1 Canister Filter *2 Canister *3 Canister Pump Module *4 Adapter *5 EVAP Pressure Tester Tool - - *a Disconnect the vent hose - - Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) [24 to 28 mmHg(gauge)]. Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates the leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks. NEXT --> See step 48
REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-511382-S29693778392012102600000) . 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: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister *6 Canister Filter *a Inspection Area (check for disconnection and/or cracks) - - NEXT --> See step 48
REPLACE PURGE VSV Replace the purge VSV. Refer to «REMOVAL»(ref-511382-S14851704862012102600000) . NEXT --> See step 48
REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 48
REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 48
INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. Refer to «REMOVAL»(ref-511404-S26851381792012102600000) ). NEXT --> See step 48
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 --> See step 48
REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) NEXT --> See step 48
REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-511382-S29693778392012102600000) . 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: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister *6 Canister Filter *a Inspection Area (check for disconnection and/or cracks) - - NEXT: Go to next step
PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 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 fuel tank leak check unavailable. Do not run the engine in this step. 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 fuel temperature below 35°C (95°F). 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-511384-S36374632912012102600000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. Result Proceed to EVAP system DTCs are output A No DTCs output (No pending DTCs output) B B --> END A: Go to next step
REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000) . NEXT: Go to next step
PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. It takes a maximum of approximately 19 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 fuel tank leak check unavailable. Do not run the engine in this step. 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 fuel temperature below 35°C (95°F). 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-511384-S36374632912012102600000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. HINT: If no pending DTCs are found, the repair has been successfully completed. NEXT --> END

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

Scheme 177

Scheme 177: PROCEDURE

Scheme 178

Scheme 179

Scheme 180

Scheme 181

PERFORM ACTIVE TEST USING TECHSTREAM (FUEL PUMP/SPD) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream. RESULT Result Proceed to Fuel pump operating sound does not occur A Fuel pump operating sound occurs B B --> See step 8 A: Go to next step
INSPECT MAIN BODY ECU (C/OPN RELAY INPUT VOLTAGE) Measure the voltage between the terminal of the main body ECU and the body ground when the ignition switch is turned to ON and off. Standard Voltage Tester Connection Switch Condition Specified Condition 2B-11 (Main body ECU) - Body ground Ignition switch OFF Below 1 V 2F-4 (Main body ECU) - Body ground 2B-11 (Main body ECU) - Body ground Ignition switch ON 11 to 14 V 2F-4 (Main body ECU) - Body ground RESULT Result Proceed to Outside standard range A Within standard range B B --> See step 4 A: Go to next step
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - INTEGRATION RELAY) Remove the integration relay from the engine room relay block. Disconnect the main body ECU connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 1A-4 (Integration relay) - 2F-4 (Main body ECU) Always Below 1 ohms 1B-4 (Integration relay) - 2B-11 (Main body ECU) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2F-4 (Main body ECU) - Body ground Always 10 kohms or higher 2B-11 (Main body ECU) - Body ground Always 10 kohms or higher Reinstall the integration relay. Reconnect the main body ECU connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
INSPECT MAIN BODY ECU (C/OPN RELAY) Remove the main body ECU. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-11 - 2A-8 When battery voltage not applied 10 kohms or higher When battery voltage applied to terminals 2F-4 and 2B-10 Below 1 ohms Reinstall the main body ECU. NG --> See step 11 OK: Go to next step
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM) Disconnect the ECM connector. Disconnect the main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2B-10 (Main body ECU) - A36-7 (FC) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2B-10 (Main body ECU) or A36-7 (FC) - Body ground Always 10 kohms or higher Reconnect the main body ECU connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FUEL PUMP - BODY GROUND) Check the harness and the connectors between the main body ECU (C/OPN relay) and the fuel pump. Disconnect the main body ECU connector. Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Conditions 2A-8 (Main body ECU) - H13-4 (Fuel pump) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Conditions 2A-8 (Main body ECU) or H13-4 (Fuel pump) - Body ground Always 10 kohms or higher Reconnect the main body ECU connector. Reconnect the fuel pump connector. Check the harness and the connectors between the fuel pump and the body ground. Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Conditions H13-5 (Fuel pump) - Body ground Always Below 1 ohms Reconnect the fuel pump connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-511393-S17514318892012102600000) . NG --> See step 16 OK --> See step 12
READ VALUE USING TECHSTREAM (STARTER SIG) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal. Check the result when the ignition switch is turned to ON and START. OK Ignition Switch Position Starter Signal ON OFF START ON NG --> See step 13 OK: Go to next step
READ VALUE USING TECHSTREAM (ENGINE SPD) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Read the values displayed on the Techstream while cranking. OK Values are displayed continuously. NG --> See step 14 OK --> See step 15
GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)
REPLACE MAIN BODY ECU. Refer to «REMOVAL - Step 3»(ref-511391-S41319909642012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPAIR OR REPLACE STARTING SYSTEM. Refer to «INSPECTION PROCEDURE»(ref-511388-S00598650452012102600000)
REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-511389-S36898240992012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-511393-S11421065682012102600000)

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

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INSPECT 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 B11-1 - Body ground Ignition switch ON 11 to 14 V B12-1 - Body ground Ignition switch ON 11 to 14 V B13-1 - Body ground Ignition switch ON 11 to 14 V B14-1 - Body ground Ignition switch ON 11 to 14 V Reconnect the fuel injector connectors. NG --> See step 6 OK: Go to next step
INSPECT FUEL INJECTOR (INJECTOR RESISTANCE) Measure the injector resistance. Refer to «INSPECTION - Step 1»(ref-511393-S01840439762012102600000) . NG --> See step 7 OK: Go to next step
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 B11-2 - B33-108 (#10) Always Below 1 ohms B12-2 - B33-107 (#20) Always Below 1 ohms B13-2 - B33-106 (#30) Always Below 1 ohms B14-2 - B33-105 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B11-2 or B33-108 (#10) - Body ground Always 10 kohms or higher B12-2 or B33-107 (#20) - Body ground Always 10 kohms or higher B13-2 or B33-106 (#30) - Body ground Always 10 kohms or higher B14-2 or B33-105 (#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
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 B33-45 (E01) - Body ground Always Below 1 ohms B33-44 (E02) - Body ground Always Below 1 ohms Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT FUEL INJECTOR (INJECTION AND VOLUME) Check the fuel injector injection and volume. Refer to «INSPECTION - Step 1»(ref-511393-S01840439762012102600000) . NG --> See step 7 OK --> See step 9
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - INTEGRATION RELAY) Disconnect the fuel injector connectors. Remove the integration 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 B11-1 - 1A-4 (Integration relay) Always Below 1 ohms B12-1 - 1A-4 (Integration relay) Always Below 1 ohms B13-1 - 1A-4 (Integration relay) Always Below 1 ohms B14-1 - 1A-4 (Integration relay) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition B11-1 or 1A-4 (Integration relay) - Body ground Always 10 kohms or higher B12-1 or 1A-4 (Integration relay) - Body ground Always 10 kohms or higher B13-1 or 1A-4 (Integration relay) - Body ground Always 10 kohms or higher B14-1 or 1A-4 (Integration relay) - Body ground Always 10 kohms or higher Reconnect the fuel injector connectors. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-511393-S36639117142012102600000)
REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-511387-S00803622272012102600000)
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-511384-S26307350452012102600000)

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

Inspection Method

Drive at 10 km/h (6.25 mph), 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 1000 RPM when the brake pedal is depressed, then the brake override system has been activated.

WARNING

When 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

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-511384-S23597167722012102600000) .
If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accelerator Position changes but the value of Accel Sens. No. 1 Volt % 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.

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

Scheme 186

Scheme 186: PROCEDURE

Scheme 187

CHECK THAT MIL IS ILLUMINATED Perform troubleshooting in accordance with the table below. RESULT Result Proceed to MIL remains ON A MIL does not illuminate B B --> See step 5 A: Go to next step
CHECK WHETHER MIL TURNS OFF Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check if any DTCs have been detected. Note down any DTCs. RESULT Result Proceed to No DTC detected A Any DTCs detected B HINT: Check for detected DTCs output from other ECUs which relates to the MIL. B --> See step 8 A: Go to next step
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the ECM connector. Turn the ignition switch to ON. Check that the MIL is not illuminated. OK MIL is not illuminated. Reconnect the ECM connector. NG --> See step 4 OK --> See step 9
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A36-24 (W) or C36-3 (combination meter) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the combination meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 12
CHECK THAT MIL IS ILLUMINATED Check if the MIL is illuminated when the ignition switch is turned to ON. OK MIL should be illuminated. NG --> See step 6 OK --> See step 11
CHECK THAT ENGINE STARTS Turn the ignition switch to ON. Start the engine. RESULT Result Proceed to Engine starts A Engine does not start* B HINT: *: The Techstream cannot communicate with the ECM. B --> See step 13 A: Go to next step
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) Disconnect the ECM connector. Disconnect the combination meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A36-24 (W) - C36-3 (combination meter) Always Below 1 ohms Reconnect the ECM connector. Reconnect the combination meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-511384-S22208120472012102600000)
REPLACE ECM. Refer to «REMOVAL»(ref-511385-S33230492262012102600000)
REPLACE COMBINATION METER. Refer to «REMOVAL»(ref-511398-S03938641392012102600000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-511384-S28868653262012102600000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-511398-S03938641392012102600000)
GO TO VC OUTPUT CIRCUIT. Refer to «VC Output Circuit»(ref-511387-S21744657452012102600000)

Engine Control System (Diagnostic Codes (P1604-P2610) & Circuit Tests)): Diagnosis Scion xB II рестайлинг

INSPECTION PROCEDURE

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DTC SUMMARY

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