Engine Control System (Diagnostic Codes (P1604-P2A00) & 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 these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
If any other DTCs are output, perform troubleshooting for those DTCs first.
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-388734-S37216522582011031100000) .
When confirming 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.

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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 100 and 250 rpm (the engine cranks but there is no combustion). HINT: If the engine speed is between 100 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 3 to 8 100 to 250 rpm (engine cranks but no initial combustion*1) Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system 9 to 13 250 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 14 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 25 to 30 Starting system Starter (includes pinion gear wear or tooth damage) Starting system Engine assembly Engine assembly (excess friction) Drive plate wear or tooth damage Flywheel wear or tooth damage Cranking speed too low Battery malfunction Battery fully depleted 31 to 33 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 34 to 49 Ignition system malfunction Spark plug Crankshaft position sensor Ignition coil Engine stalls after starter turnoff Air suction Intake system connections 50 to 56 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 57 to 70 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 87 to 94 95 to 102 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 103 to 105 Fuel system troubleshooting C Injection signal system malfunction Fuel injector Crankshaft position sensor Camshaft position sensor ECM 72 to 76 Intake system troubleshooting Difference between ISC target value and opening angle when idling Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM 84 to 86 106 to 108 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 77 to 83 109 to 115

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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 the DTCs and record the Freeze Frame Data. HINT: This freeze frame data shows the actual engine conditions when engine starting trouble occurred. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data. The fourth set of freeze frame data is the data recorded when then the DTC is stored. Result Result Proceed to Only DTC P1604 is output A DTCs other than P1604 are output B B --> See step 116 A: 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 24 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-388734-S37216522582011031100000) . 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 100 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 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 step 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. Engine Speed (Starter Off) Shift SW Status (R, D Range) E --> See step 50 D --> See step 14 C --> See step 9 B --> See step 4 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-388734-S37216522582011031100000) . 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. C --> CHECK AND REPAIR ENGINE OR BATTERY B --> See step 5 A --> See step 117
CHECK CRANKSHAFT POSITION SENSOR INSTALLATION Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. NG --> See step 118 OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Disconnect the crankshaft position sensor connector. Check for oil on the connector terminals. OK No oil on the terminals. NG --> See step 119 OK: Go to next step
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 120 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C2-1 - C19-122 (NE+) Always Below 1 ohms C2-1 - C19-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C2-1 or C19-122 (NE+) - Body ground Always 10 kohms or higher C2-1 or C19-121 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 165
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-388734-S37216522582011031100000) . Result Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Ambient Temperature, Intake Air Coolant Temp, Ambient Temperature Fuel Pump/Speed Status Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C or more*1 Coolant Temp is 125°C or more, or lower than Ambient Temperature by 15°C or more - Engine coolant temperature sensor A Other than above All 5 sets of freeze frame data are ON - B At least 1 of the 5 sets of freeze frame data is OFF Fuel pump control system C Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C*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. C --> See step 121 B --> See step 10 A --> See step 166
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Disconnect the fuel pump connector. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L7-4 - Body ground Active Test is being performed 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the fuel pump connector. NG --> See step 122 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the 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 C4-1 - Body ground Ignition switch ON 11 to 14 V C5-1 - Body ground Ignition switch ON 11 to 14 V C6-1 - Body ground Ignition switch ON 11 to 14 V C7-1 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the injector connectors. NG --> See step 123 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. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. Result Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 13 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 23 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-388734-S37216522582011031100000) . Result Freeze Frame Data Item Suspected Area Proceed to Coolant Temp, Ambient Temperature, Intake Air Coolant Temp, Ambient Temperature Long FT #1 Engine Speed Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C or more Coolant Temp is 125°C or more, or lower than Ambient Temperature by 15°C 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*1 Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C - -15% or less, or +15% or more - Fuel pump control system Fuel injector B -15 to +15% Minimum speed is 300 rpm or more*1 Engine assembly C Minimum speed is below 300 rpm Fuel system Intake air system D HINT: *1: Compression loss may have occurred in the engine assembly. D --> See step 17 C --> CHECK AND REPAIR ENGINE ASSEMBLY B --> See step 15 A --> See step 167
INSPECT FUEL INJECTOR Check that no carbon is stuck to the fuel injector. OK No carbon present. NG --> See step 124 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 23 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-388734-S37216522582011031100000) . 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 19 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-388745-S39058734952011031100000) . 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. Result Result Proceed to Abnormal A Normal B B --> See step 23 A --> See step 125
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 21 A: Go to next step
INSPECT FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(ref-388742-S38387298712011031100000) . Result Result Proceed to Abnormal A Normal B B --> See step 21 A --> See step 168
CHECK THROTTLE BODY Check if carbon is in the air flow passage. Result Result Proceed to Carbon in passage A No carbon present B B --> See step 22 A --> See step 169
CHECK INTAKE SYSTEM Check the intake system for vacuum leak. Refer to «ON-VEHICLE INSPECTION»(ref-388743-S32820677762011031100000) . 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 24 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 wear or teeth damage 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 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). E --> See step 57 D --> See step 50 C --> See step 34 B --> See step 31 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 Flywheel 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. C --> See step 29 B --> See step 28 A: Go to next step
INSPECT BATTERY Check the electrolyte quantity. OK Electrolyte quantity is within the specified range. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F)) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
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 170
CHECK STARTER Remove the starter. Refer to «REMOVAL»(ref-388740-S16553238632011031100000) . Check for starter pinion gear wear and damage. Standard There is no wear or damage. Result Result Proceed to NG A OK (for manual transaxle models) B OK (for automatic transaxle models) C C --> See step 171 B --> See step 187 A --> See step 126
INSPECT BATTERY Check the electrolyte quantity. OK Electrolyte quantity is within the specified range. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
INSPECT STARTER Inspect the starter. Refer to «INSPECTION»(ref-388740-S10595096982011031100000) . NG --> See step 127 OK --> See step 172
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 Check the electrolyte quantity. OK Electrolyte quantity is within the specified range. Inspect the battery voltage. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery. Measure the battery voltage. Standard voltage 12.5 to 12.9 V (electrolyte is at 20°C (68°F)) HINT: If the result is not as specified, recharge or replace the battery. Measure the battery voltage when cranking the engine. Standard Approximately 6 V or higher (0°C (32°F) or higher) HINT: When the battery is depleted, the horn becomes quieter. NG --> CHARGE OR REPLACE BATTERY OK: Go to next step
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 173
CHECK FUEL INJECTOR Using a sound scope or screwdriver, check for an injector operating noise while cranking the engine. OK Fuel injector operating noise is heard. NG --> See step 47 OK: Go to next step
CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388745-S39058734952011031100000) . NG --> See step 45 OK: Go to next step
INSPECT SPARK PLUG AND SPARK Inspect for sparks. Refer to «ON-VEHICLE INSPECTION»(ref-388729-S41054930162011031100000) . NG --> See step 40 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 71, perform fuel system troubleshooting C (steps 72 to 76). C --> See step 71 B --> See step 39 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-388745-S39058734952011031100000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine) B*1 HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 71, perform fuel system troubleshooting C (steps 72 to 76). B --> See step 71 A --> See step 128
CHECK 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 he concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *1: From step 71, perform fuel system troubleshooting C (steps 72 to 76). B --> See step 71 A --> See step 174
INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388729-S07005667082011031100000) . HINT: Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders. NG --> See step 129 OK: Go to next step
READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. 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 --> CHECK CRANKSHAFT POSITION SENSOR CIRCUIT OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL POWER SOURCE) Disconnect the ignition coil connectors. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C11-1 (+B) - C11-4 (GND) Ignition switch ON 11 to 14 V C12-1 (+B) - C12-4 (GND) Ignition switch ON 11 to 14 V C13-1 (+B) - C13-4 (GND) Ignition switch ON 11 to 14 V C14-1 (+B) - C14-4 (GND) Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ignition coil connectors. NG --> See step 130 OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connectors. 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 C11-2 (IGF) - C19-81 (IGF1) Always Below 1 ohms C12-2 (IGF) - C19-81 (IGF1) Always Below 1 ohms C13-2 (IGF) - C19-81 (IGF1) Always Below 1 ohms C14-2 (IGF) - C19-81 (IGF1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C11-2 (IGF) or C19-81 (IGF1) - Body ground Always 10 kohms or higher C12-2 (IGF) or C19-81 (IGF1) - Body ground Always 10 kohms or higher C13-2 (IGF) or C19-81(IGF1) - Body ground Always 10 kohms or higher C14-2 (IGF) or C19-81 (IGF1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the ignition coil connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM) Disconnect the ignition coil connectors. 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 C11-3 (IGT1) - C19-85 (IGT1) Always Below 1 ohms C12-3 (IGT2) - C19-84 (IGT2) Always Below 1 ohms C13-3 (IGT3) - C19-83 (IGT3) Always Below 1 ohms C14-3 (IGT4) - C19-82 (IGT4) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C11-3 (IGT1) or C19-85 (IGT1) - Body ground Always 10 kohms or higher C12-3 (IGT2) or C19-84 (IGT2) - Body ground Always 10 kohms or higher C13-3 (IGT3) or C19-83 (IGT3) - Body ground Always 10 kohms or higher C14-3 (IGT4) or C19-82 (IGT4) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the ignition coil, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 71 and perform troubleshooting for the ignition system (steps 77 to 83). Reconnect the ignition coil connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 175
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. 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 131 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. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. Result Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 71 and perform fuel system troubleshooting (steps 72 to 76). B --> See step 132 A --> REPAIR OR REPLACE FUEL LINE
READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. Start the engine. 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 133 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the 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 C4-1 - Body ground Ignition switch ON 11 to 14 V C5-1 - Body ground Ignition switch ON 11 to 14 V C6-1 - Body ground Ignition switch ON 11 to 14 V C7-1 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the injector connectors. NG --> See step 134 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the injector connectors. 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 C4-2 - C19-108 (#10) Always Below 1 ohms C5-2 - C19-107 (#20) Always Below 1 ohms C6-2 - C19-106 (#30) Always Below 1 ohms C7-2 - C19-105 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C4-2 or C19-108 (#10) - Body ground Always 10 kohms or higher C5-2 or C19-107 (#20) - Body ground Always 10 kohms or higher C6-2 or C19-106 (#30) - Body ground Always 10 kohms or higher C7-2 or C19-105 (#40) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the injector connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 176
INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION»(ref-388735-S15142531732011031100000) . NG --> See step 56 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»(ref-388743-S32820677762011031100000) . HINT: If the accelerator pedal is released after revving 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 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 revving 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
CHECK THROTTLE BODY Disconnect the throttle body connector. HINT: When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°. Crank the engine and check that it starts. Result Result Proceed to Engine starts A Engine does not start B Reconnect 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-388734-S06424090862011031100000) . B --> See step 54 A: Go to next step
CHECK 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 SYSTEM) Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in N. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Tester Operation Specified Condition OCV OFF Normal engine speed OCV ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems. NG --> See step 177 OK: Go to next step
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1). HINT: When performing the Active Test, make sure the A/C is on and the shift lever is in N. Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK*1 Tester Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls Result Result Proceed to NG A OK B HINT: *1: From step 71, perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). 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. B --> See step 71 A --> See step 135
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C23-5 (VG) - C19-118 (VG) Always Below 1 ohms C23-4 (E2G) - C19-116 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C23-5 (VG) or C19-118 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 71 and perform intake system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 178
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-388735-S00808240142011031100000) . 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 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. NG --> See step 136 OK: Go to next step
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the engine coolant temperature sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C18-2 - C19-97 (THW) Always Below 1 ohms C18-1 - C19-96 (ETHW) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C18-2 or C19-97 (THW) - Body ground Always 10 kohms or higher C18-1 or C19-96 (ETHW) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. Reconnect the engine coolant temperature sensor connector. Reconnect the ECM connector. 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 «ON-VEHICLE INSPECTION»(ref-388735-S15142531732011031100000) . 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 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. NG --> See step 137 OK: Go to next step
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C23-5 (VG) - C19-118 (VG) Always Below 1 ohms C23-4 (E2G) - C19-116 (E2G) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C23-5 (VG) or C19-118 (VG) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. Reconnect the mass air flow meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
READ VALUE USING TECHSTREAM (LONG FT #1 - ATMOSPHERE PRESSURE) 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 / Long FT #1 and Atmosphere Pressure. Result Data List Item Result Suspected Area Proceed to Long FT #1 +25% or more or less than -25% Air fuel ratio 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 65 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 65 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 and Fuel System Status #2. Confirm that Fuel System Status #1 and Fuel System Status #2 are both CL. Enter the following menus: Powertrain / Engine and ECT / Data List / AF Lambda B1S1. Confirm that AF Lambda B1S1 are both 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 for A/F sensor. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume. Standard Tester Display Injection Volume Specified Condition AFS Voltage B1S1 AFS Voltage B2S1 +25% Air fuel ratio sensor output voltage is below 3.1 V -12.5% Air fuel ratio sensor output voltage is higher than 3.4 V HINT: The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the air fuel ratio sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. NG --> See step 138 OK: Go to next step
PERFORM SIMULATION TEST Check if the idling speed is stable after starting the engine. OK 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 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. NG --> See step 139 OK --> See step 179
CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388745-S39058734952011031100000) . NG --> See step 70 OK: Go to next step
INSPECT SPARK PLUG Inspect the spark plugs. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388729-S07005667082011031100000) . 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 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), 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 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. *3: Engine starting trouble may occur if the vehicle is driven extremely short distances repeatedly. C --> See step 141 B --> See step 140 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 71, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. C --> See step 71 B --> 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-388745-S39058734952011031100000) . Attach a fuel pressure gauge and check the fuel pressure after stopping the engine. Result Result Proceed to Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine) A 147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine) B*1 HINT: If the engine cannot be started, check the fuel pressure after cranking the engine. *1: From step 71, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. B --> See step 71 A --> See step 142
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*1 HINT: If the concentration is 400 ppm or higher, a fuel injector may have a sealing problem. *1: From step 71, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. B --> See step 71 A --> See step 180
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. Result Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble still occurs, proceed to step 71 and perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. B --> See step 143 A --> REPAIR OR REPLACE FUEL LINE
CHECK MALFUNCTION CONDITION If the malfunction could not be identified during the inspection in steps 37, 38, 39 and 46, perform fuel system troubleshooting C (steps 72 to 76). Result Performed Step Troubleshooting by System Procedure Proceed to Steps 37, 38, 39 and 46 Fuel system troubleshooting C 72 to 76 A If the malfunction could not be identified during the inspection in step 44, perform ignition system troubleshooting (steps 77 to 83). Result Performed Step Troubleshooting by System Procedure Proceed to Step 44 Ignition system troubleshooting 77 to 83 B If the malfunction could not be identified during the inspection in steps 54, 55 and 56, perform intake air system troubleshooting (steps 84 to 86). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 87 to 94). Result Performed Step Troubleshooting by System Procedure Proceed to Step 54, 55, 56 Intake air system troubleshooting 84 to 86 C Fuel system troubleshooting A 87 to 94 If the malfunction could not be identified during the inspection in steps 57, 58, 59, 60, 63, 64, 65, 66, 67, 68, 69 and 70, perform fuel system troubleshooting A (steps 95 to 102), fuel system troubleshooting B (steps 103 to 105), intake air system troubleshooting (steps 106 to 108), and ignition system troubleshooting (steps 109 to 115), in that order. Result Performed Step Troubleshooting by System Procedure Proceed to Steps 57, 58, 59, 60, 63, 64, 65, 66, 67, 68, 69 and 70 Fuel system troubleshooting A 95 to 102 D Fuel system troubleshooting B 103 to 105 Intake air system troubleshooting 106 to 108 Ignition system troubleshooting 109 to 115 D --> See step 95 C --> See step 84 B --> See step 77 A: Go to next step
INSPECT FUEL INJECTOR Inspect the fuel injectors. Refer to «INSPECTION»(ref-388742-S38387298712011031100000) . NG --> See step 144 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE) Disconnect the 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 C4-1 - Body ground Ignition switch ON 11 to 14 V C5-1 - Body ground Ignition switch ON 11 to 14 V C6-1 - Body ground Ignition switch ON 11 to 14 V C7-1 - Body ground Ignition switch ON 11 to 14 V HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the injector connectors. NG --> See step 145 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) Disconnect the injector connectors. 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 C4-2 - C19-108 (#10) Always Below 1 ohms C5-2 - C19-107 (#20) Always Below 1 ohms C6-2 - C19-106 (#30) Always Below 1 ohms C7-2 - C19-105 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C4-2 or C19-108 (#10) - Body ground Always 10 kohms or higher C5-2 or C19-107 (#20) - Body ground Always 10 kohms or higher C6-2 or C19-106 (#30) - Body ground Always 10 kohms or higher C7-2 or C19-105 (#40) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the injector connectors. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 146 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-388735-S03403130892011031100000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 181 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 147 OK: Go to next step
CHECK 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 148 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C2-1 - C19-122 (NE+) Always Below 1 ohms C2-1 - C19-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C2-1 or C19-122 (NE+) - Body ground Always 10 kohms or higher C2-1 or C19-121 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE SIDE) - ECM) Disconnect the camshaft position sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C26-1 (VV1+) - C19-99 (G2+) Always Below 1 ohms C26-2 (VV1-) - C19-98 (G2-) Always Below 1 ohms C26-3 (VC) - C19-70 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C26-1 (VV1+) or C19-99 (G2+) - Body ground Always 10 kohms or higher C26-2 (VV1-) or C19-98 (G2-) - Body ground Always 10 kohms or higher C26-3 (VC) or C19-70 (VCV1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the camshaft position sensor (for intake camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST SIDE) - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C25-1 (VVE+) - C19-76 (EV1+) Always Below 1 ohms C25-2 (VVE-) - C19-75 (EV1-) Always Below 1 ohms C25-3 (VC2) - C19-117 (VC) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C25-1 (VVE+) or C19-76 (EV1+) - Body ground Always 10 kohms or higher C25-2 (VVE-) or C19-75 (EV1-) - Body ground Always 10 kohms or higher C25-3 (VC2) or C19-117 (VC) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Disconnect the camshaft position sensor (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 149 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-388735-S03403130892011031100000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 182 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. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ISC Learning Value. Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and all the accessory switches should be off Result Data List Item Result Suspected Area Proceed to ISC Learning Value (engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 86 A: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Check the compression. Refer to «ON-VEHICLE INSPECTION - Step 8»(ref-388728-S03994150272011031100000) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> CHECK VALVE TIMING
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-388735-S00808240142011031100000) . NG --> See step 150 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-388745-S39058734952011031100000) . Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine. Result Vehicle State Specified Condition Cranking engine 304 to 343 kPa (3.1 to 3.5 kgf/cm 2 ) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm 2 ) or more NG --> See step 93 OK: Go to next step
READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Long FT #1. Result Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector B B --> See step 151 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 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
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 153 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C2-1 - C19-122 (NE+) Always Below 1 ohms C2-1 - C19-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C2-1 or C19-122 (NE+) - Body ground Always 10 kohms or higher C2-1 or C19-121 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 183
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. Result Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 94 A --> REPAIR OR REPLACE FUEL LINE
INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (+) - 5 (-) 20°C (68°F) 0.2 to 3.0 ohms HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. Reconnect the fuel pump connector. NG --> See step 154 OK --> See step 184
CHECK FUEL PRESSURE HINT: For the fuel pressure inspection, refer to the following procedures. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388745-S39058734952011031100000) . 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 101 A: Go to next step
READ VALUE USING TECHSTREAM (LONG FT #1) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Long FT #1. Result Data List Item Result Suspected Area Proceed to Long FT #1 -15 to +15% Wire harness or connector Fuel A +15% or more, or less than -15% Fuel injector B B --> See step 155 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 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 156 OK: Go to next step
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 157 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C2-1 - C19-122 (NE+) Always Below 1 ohms C2-1 - C19-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C2-1 or C19-122 (NE+) - Body ground Always 10 kohms or higher C2-1 or C19-121 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 185
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed. When performing the Active Test, check for fuel leakage from the fuel pipes. Result Result Proceed to Fuel leakage or signs of fuel leakage are present A No fuel leakage or signs of fuel leakage B HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected. B --> See step 102 A --> REPAIR OR REPLACE FUEL LINE
INSPECT FUEL PUMP Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (+) - 5 (-) 20°C (68°F) 0.2 to 3.0 ohms HINT: Make sure there is no foreign matter such as iron particles on the fuel pump and no signs that the fuel pump was stuck. Make sure the internal connector is securely connected. Make sure the fuel pump filter is not clogged. Reconnect the fuel pump connector. NG --> See step 158 OK: Go to next step
INSPECT PURGE VSV Disconnect the vacuum hose (on the canister side) of the purge VSV. Start the engine. Idle the engine. Disconnect the connector of the purge VSV. Check if air flows through the purge VSV. Standard 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-388734-S06424090862011031100000) . NG --> See step 159 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 105 A --> See step 186
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 106 A --> CLEAN INTAKE VALVE
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ISC Learning Value. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes. Result Data List Item Result Suspected Area Proceed to ISC Learning Value (engine displacement (liters) x 0.9) or more Valve timing Compression A Less than (engine displacement (liters) x 0.9) - B B --> See step 108 A: Go to next step
CHECK CYLINDER COMPRESSION PRESSURE Check the compression. Refer to «ON-VEHICLE INSPECTION - Step 8»(ref-388728-S03994150272011031100000) . NG --> REPAIR OR REPLACE ENGINE ASSEMBLY OK --> CHECK VALVE TIMING
INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «REMOVAL»(ref-388735-S27134545902011031100000) . NG --> See step 160 OK: Go to next step
CHECK CRANKSHAFT POSITION SENSOR Check the tightening and installation condition of the crankshaft position sensor bolt. Check the connection of the crankshaft position sensor connector. OK Sensor is installed correctly. NG --> See step 161 OK: Go to next step
CHECK 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 162 OK: Go to next step
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C2-1 - C19-122 (NE+) Always Below 1 ohms C2-1 - C19-121 (NE-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C2-1 or C19-122 (NE+) - Body ground Always 10 kohms or higher C2-1 or C19-121 (NE-) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the crankshaft position sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR INTAKE SIDE) - ECM) Disconnect the camshaft position sensor (for intake camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C26-1 (VV1+) - C19-99 (G2+) Always Below 1 ohms C26-2 (VV1-) - C19-98 (G2-) Always Below 1 ohms C26-3 (VC) - C19-70 (VCV1) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C26-1 (VV1+) or C19-99 (G2+) - Body ground Always 10 kohms or higher C26-2 (VV1-) or C19-98 (G2-) - Body ground Always 10 kohms or higher C26-3 (VC) or C19-70 (VCV1) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Reconnect the camshaft position sensor (for intake camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CAMSHAFT POSITION SENSOR (FOR EXHAUST SIDE) - ECM) Disconnect the camshaft position sensor (for exhaust camshaft) connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C25-1 (VVE+) - C19-76 (EV1+) Always Below 1 ohms C25-2 (VVE-) - C19-75 (EV1-) Always Below 1 ohms C25-3 (VC2) - C19-117 (VC) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C25-1 (VVE+) or C19-76 (EV1+) - Body ground Always 10 kohms or higher C25-2 (VVE-) or C19-75 (EV1-) - Body ground Always 10 kohms or higher C25-3 (VC2) or C19-117 (VC) - Body ground Always 10 kohms or higher HINT: Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur. Make sure there is not an excessive amount of force applied to the wire harness. Disconnect the camshaft position sensor (for exhaust camshaft) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
INSPECT CRANKSHAFT POSITION SENSOR Inspect the crankshaft position sensor. Refer to «INSPECTION»(ref-388735-S05187941842011031100000) . NG --> See step 163 OK: Go to next step
REPLACE CAMSHAFT POSITION SENSOR Replace the camshaft position sensor. Refer to «REMOVAL»(ref-388735-S03403130892011031100000) . Check the engine start operation. OK Malfunction has been repaired successfully. NG --> See step 164 OK --> END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
CHECK STARTER SIGNAL CIRCUIT. Refer to «Cranking Holding Function Circuit»(ref-388739-S36117224002011031100000)
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S22926160812011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-388739-S26940311472011031100000)
CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-388739-S26940311472011031100000)
CHECK POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(ref-388739-S22496850452011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(ref-388742-S41830824312011031100000)
REPLACE STARTER. Refer to «REMOVAL»(ref-388740-S16553238632011031100000)
REPLACE STARTER. Refer to «REMOVAL»(ref-388740-S16553238632011031100000)
REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(ref-388742-S41830824312011031100000)
REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-388746-S27889390792011031100000)
CHECK POWER SOURCE CIRCUIT. Refer to «PROCEDURE - Step 1»(ref-388738-S15413668772011031100000)
CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-388739-S26940311472011031100000)
CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-388739-S26940311472011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
CHECK POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(ref-388739-S22496850452011031100000)
REPLACE CAMSHAFT OIL CONTROL VALVE (for Exhaust Side). Refer to «REMOVAL»(ref-388735-S33812102812011031100000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-388735-S27134545902011031100000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-388735-S00481504932011031100000)
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-388735-S05886652062011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE SPARK PLUG (ABNORMAL CYLINDER). Refer to «REMOVAL»(ref-388746-S27889390792011031100000)
REPLACE SPARK PLUG (ALL CYLINDER). Refer to «REMOVAL»(ref-388746-S27889390792011031100000)
REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(ref-388742-S41830824312011031100000)
CHECK FUEL PUMP CONTROL SYSTEM. Refer to «Fuel Pump Control Circuit»(ref-388739-S26940311472011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
CHECK POWER SOURCE CIRCUIT. Refer to «Fuel Injector Circuit»(ref-388739-S22496850452011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S22926160812011031100000)
SECURELY REINSTALL CAMSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S28897760202011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «INSPECTION»(ref-388735-S05187941842011031100000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-388735-S27134545902011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S22926160812011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-388742-S05286328372011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S22926160812011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-388742-S05286328372011031100000)
INSPECT PURGE VSV. Refer to «INSPECTION»(ref-388732-S11344389452011031100000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-388735-S27134545902011031100000)
SECURELY REINSTALL CRANKSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S22926160812011031100000)
SECURELY REINSTALL CAMSHAFT POSITION SENSOR. Refer to «INSTALLATION»(ref-388735-S28897760202011031100000)
REPLACE CRANKSHAFT POSITION SENSOR. Refer to «REMOVAL»(ref-388735-S41899630452011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-388735-S27134545902011031100000)
REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-388735-S27134545902011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
CLEAN OR REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-388735-S12806086742011031100000)
INSPECT STARTER. Refer to «INSPECTION»(ref-388740-S10595096982011031100000)
REPLACE DRIVE PLATE AND RING GEAR. Refer to «REMOVAL»(ref-388728-S08328030072011031100000)
CHECK STARTER SIGNAL CIRCUIT. Refer to «Cranking Holding Function Circuit»(ref-388739-S36117224002011031100000)
INSPECT STARTER. Refer to «INSPECTION»(ref-388740-S10595096982011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-388746-S27889390792011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE CAMSHAFT OIL CONTROL VALVE (for Intake Side). Refer to «REMOVAL»(ref-388735-S33812102812011031100000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-388735-S00481504932011031100000)
REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-388735-S00481504932011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE PRESSURE REGULATOR. Refer to «REMOVAL»(ref-388742-S41830824312011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE FLYWHEEL SUB-ASSEMBLY. Refer to «REMOVAL»(ref-388728-S08328030072011031100000)

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 293

Scheme 293: PROCEDURE

Scheme 294

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 C17-2 (M+) - C19-42 (M+) Always Below 1 ohms C17-1 (M-) - C19-41 (M-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C17-2 (M+) or C19-42 (M+) - Body ground Always 10 kohms or higher C17-1 (M-) or C19-41 (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-388735-S12806086742011031100000)
REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-388735-S12806086742011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

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 295

Scheme 295: PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2109) Connect the Techstream to the DLC3. Turn the ignition switch ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to Only DTC P2109 is output A DTC P2109 and other DTCs are output B HINT: If any DTCs other than P2109 are output, troubleshoot those DTCs first. B --> See step 5 A: Go to next step
READ 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-388734-S37216522582011031100000) . 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 ASSEMBLY) Clean off any deposits from the inside of the throttle body. Push open the throttle valve and wipe off any carbon from the valve and bore using a cloth soaked in non-residue solvent. NOTE: Make sure that the cloth or your fingers do not get caught in the valve. Make sure that foreign matter does not enter the throttle 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. NEXT: Go to next step
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE) Remove the EFI and ETCS fuses at the same time, wait 60 seconds or more, and then reinstall the fuses to reset the ISC learning value. Start the engine and fully warm it up. Leave the vehicle idling for 3 minutes or more and check that the engine speed is at the standard idling speed. HINT: Check the freeze frame data and make sure that the vehicle conditions are the same as when the DTC was stored. Using the Techstream, confirm "ISC Learning Value". OK The value is half of "ISC Learning Value" recorded in the freeze frame data or less. NG --> See step 6 OK --> END
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
REPLACE THROTTLE BODY. Refer to «REMOVAL»(ref-388735-S12806086742011031100000)

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.

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

HINT

Scheme 296

Scheme 296: 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 / All Data / +BM Voltage. Read the value displayed on the Techstream. Standard Voltage 11 to 14 V NG --> See step 2 OK --> See step 3
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 A21-3 (+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 C19-43 (ME01) - Body ground Always Below 1 ohms C19-104 (E1) - Body ground Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

HINT

Scheme 297

Scheme 297: PROCEDURE

Scheme 298

Scheme 299

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 tester. Standard Voltage Accelerator Pedal Operation Accel Sensor Out No. 1 Accel Sensor Out No. 2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 5.0 V 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 A20-6 (VPA) - A21-55 (VPA) Always Below 1 ohms A20-5 (EPA) - A21-59 (EPA) Always Below 1 ohms A20-4 (VCPA) - A21-57 (VCPA) Always Below 1 ohms A20-3 (VPA2) - A21-56 (VPA2) Always Below 1 ohms A20-2 (EPA2) - A21-60 (EPA2) Always Below 1 ohms A20-1 (VCP2) - A21-58 (VCP2) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A20-6 (VPA) or A21-55 (VPA) - Body ground Always 10 kohms or higher A20-5 (EPA) or A21-59 (EPA) - Body ground Always 10 kohms or higher A20-4 (VCPA) or A21-57 (VCPA) - Body ground Always 10 kohms or higher A20-3 (VPA2) or A21-56 (VPA2) - Body ground Always 10 kohms or higher A20-2 (EPA2) or A21-60 (EPA2) - Body ground Always 10 kohms or higher A20-1 (VCP2) or A21-58 (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
INSPECT 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 A20-4 (VCPA) - A20-5 (EPA) Ignition switch ON 4.5 to 5.5 V A20-1 (VCP2) - A20-2 (EPA2) Ignition switch ON 4.5 to 5.5 V Reconnect the accelerator pedal position sensor connector. NG --> See step 6 OK: Go to next step
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY Replace the accelerator pedal rod assembly. Refer to «REMOVAL»(ref-388735-S04914580752011031100000) . 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-388734-S06424090862011031100000) . Start the engine. Refer to the confirmation driving pattern for P2120, P2122, P2123, P2125, P2127, P2128, and P2138. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to P2120, P2122, P2123, P2125, P2127, P2128 or P2138 A No output B B --> END A --> See step 7
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor function provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

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

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
Perform the Active Test operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume.)
Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the tester.

HINT

The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Tester Display (Sensor)	Injection Volume	Status	Voltage
AFS Voltage B1S1 (A/F)	+25%	Rich	Less than 3.1 V
AFS Voltage B1S1 (A/F)	12.5%	Lean	More than 3.4 V
O2S B1S2 (HO2)	+25%	Rich	More than 0.55 V
O2S B1S2 (HO2)	12.5%	Lean	Less than 0.4 V

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Injector Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 300

Scheme 301

Scheme 302

Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
To display the graph, Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

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

HINT

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.

Scheme 303

Scheme 303: PROCEDURE

Scheme 304

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195 OR P2196) 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 the DTCs. Result Result Proceed to P2195 or P2196 A P2195 or P2196 and other DTCs B HINT: If any DTCs other than P2195 and P2196 are output, troubleshoot those DTCs first. B --> See step 18 A: Go to next step
READ VALUE USING TECHSTREAM (TEST VALUE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor. Check that the status of O2 Sensor is Complete. If the status is still Incomplete, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RANGE B1 S1. Check the test value of the A/F sensor output current during fuel-cut. Result Result Proceed to Within normal range (0.7 mA or higher, and below 2.2mA) A Outside normal range (Below 0.7 mA, or 2.2 mA or higher) B B --> See step 15 A: Go to next step
READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF AIR FUEL RATIO SENSOR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the Air-Fuel Ratio (A/F) sensor at an engine speed of 2500 rpm for 90 seconds. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / AFS Voltage B1S1 and Engine Speed, then press the Record button. Check the A/F sensor voltage three times, when the engine is in each of the following conditions: (1) While idling (check for at least 30 seconds) (2) At an engine speed of approximately 2500 rpm (without any sudden changes in engine speed) (3) Raise the engine speed to 4000 rpm and then quickly release the accelerator pedal so that the throttle valve is fully closed. Standard Voltage Condition A/F Sensor Voltage Variation Reference (1) and (2) Changes at approximately 3.3 V Between 3.1 V and 3.4 V (3) Increases to 3.8 V or higher This occurs during engine deceleration (when fuel-cut performed) HINT: For more information, see the diagrams below. HINT: If the output voltage of the A/F sensor remains at approximately 3.3 V (see Malfunction Condition diagram) under any conditions, including those above, the A/F sensor may have an open circuit. (This will also happen if the A/F sensor heater has an open circuit.) If the output voltage of the A/F sensor remains at either approximately 3.8 V or higher, or below 2.8 V (see Malfunction Condition diagram) under any conditions, including those above, the A/F sensor may have a short circuit. The ECM stops fuel injection (fuel cut) during engine deceleration. This causes a lean condition and results in a momentary increase in the A/F sensor output voltage. When the vehicle is driven: The output voltage of the A/F sensor may be below 2.8 V during fuel enrichment. For the vehicle, this translates to a sudden increase in speed with the accelerator pedal fully depressed when trying to overtake another vehicle. The A/F sensor is functioning normally. The A/F sensor is a current output element; therefore, the current is converted into a voltage inside the ECM. Measuring the voltage at the connectors of the A/F sensor or ECM will show a constant voltage result. NG --> See step 10 OK: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the confirmation driving pattern for P2195 and P2196. NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195 OR P2196) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Result Proceed to ABNORMAL DTC P2195 or P2196 detected) A NORMAL (DTC is not output) B B --> See step 9 A: Go to next step
REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-388735-S05886652062011031100000) . NEXT: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the confirmation driving pattern for P2195 and P2196. NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195 OR P2196) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL DTC P2195 or P2196 detected) B B --> See step 19 A --> END
CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST Has the vehicle run out of fuel in the past? NO --> See step 20 YES --> DTC CAUSED BY RUNNING OUT OF FUEL
INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-388738-S38655170662011031100000) NG --> See step 21 OK: Go to next step
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition C21-1 (HA1A) - C19-109 (HA1A) Always Below 1 ohms C21-3 (A1A+) - C19-112 (A1A+) C21-4 (A1A-) - C19-113 (A1A-) Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C21-1 (HA1A) or C19-109 (HA1A) - Body ground Always 10 kohms or higher C21-3 (A1A+) or C19-112 (A1A+) - Body ground C21-4 (A1A-) or C19-113 (A1A-) - Body ground Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leak. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-388743-S29392626042011031100000) . OK No leak from air induction system. NG --> See step 22 OK: Go to next step
CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-388745-S39058734952011031100000) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
INSPECT FUEL INJECTOR Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-388742-S38387298712011031100000) . NG --> See step 23 OK: Go to next step
REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-388735-S05886652062011031100000) . NEXT: Go to next step
PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the confirmation driving pattern for P2195 and P2196. NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS (DTC P2195 OR P2196) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P2195 or P2196. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL DTC P2195 or P2196 detected) B B --> See step 24 A --> END
GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-388735-S05886652062011031100000)
REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «ON-VEHICLE INSPECTION»(ref-388743-S32820677762011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

HINT

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

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
Perform the Active Test operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume.)
Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the tester.

HINT

The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Tester Display (Sensor)	Injection Volume	Status	Voltage
AFS Voltage B1S1 (A/F)	+25%	Rich	Less than 3.1 V
AFS Voltage B1S1 (A/F)	12.5%	Lean	More than 3.4 V
O2S B1S2 (HO2)	+25%	Rich	More than 0.55 V
O2S B1S2 (HO2)	12.5%	Lean	Less than 0.4 V

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
To display the graph, Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

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

HINT

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-g (2.25 mmHg-g)	Canister pump module (Reference orifice, leak detection pump, vent valve) Connector/wire harness (Canister pump module - ECM) 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 .

HINT

Unit expressions

[kPa-a (mmHg-a)] denotes the absolute pressure.
[kPa-g (mmHg-g)] denotes the gauge pressure (relative pressure).
On the Techstream, convert the unit of measurement according to the 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 set 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.

HINT

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

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
Perform the Active Test operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume.)
Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2) displayed on the tester.

HINT

The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Tester Display (Sensor)	Injection Volume	Status	Voltage
AFS Voltage B1S1 (A/F)	+25%	Rich	Less than 3.1 V
AFS Voltage B1S1 (A/F)	12.5%	Lean	More than 3.4 V
O2S B1S2 (HO2)	+25%	Rich	More than 0.55 V
O2S B1S2 (HO2)	12.5%	Lean	Less than 0.4 V

Note. The Air Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
To display the graph, Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2; then press the graph button on the Data List view.

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

HINT

DTC P2A00 may be also set, when the air-fuel ratio is stuck rich or lean.
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.
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. The Techstream is required to conduct the following diagnostic troubleshooting procedure. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Using the Techstream to monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
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 305

Scheme 305: PROCEDURE

Scheme 306

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Scheme 311

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Scheme 319

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Scheme 326

Scheme 327

CONFIRM DTC Turn the ignition switch to OFF and wait for 10 seconds. Turn the ignition switch to ON. Turn the ignition switch to OFF and wait for 10 seconds. 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. Confirm DTCs and freeze frame data. If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below. NEXT: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of five 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. If the cut-off valve is closed, the fuel tank leak check is not possible. 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). Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 selecting the following menu items: Powertrain / Engine and ECT / Trouble Codes / Pending. 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 EVAPORATIVE SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), perform the series of 5 Evaporative System Check steps 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. If the cut-off valve is closed, the fuel tank leak check is not possible. 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). Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5) Check the EVAP pressure in step 1/5. Result DTCs* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa-g (+/-2.25 mmHg-g) or more Canister pressure sensor noise B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above. B --> See step 29 A: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5 TO 2/5) Check the EVAP pressure in steps 1/5 and 2/5. Result DTCs* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/5. Then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 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" procedures above. HINT: The first reference pressure is the value determined in step 2/5. B --> See step 22 A: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5) HINT: Make a note of the pressures checked in steps (a) and (b) below. (a) Check the EVAP pressure 4 seconds after the leak detection pump is activated*. *: The leak detection pump begins to operate as step 1/5 finishes and step 2/5 starts. (b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure. Result DTCs* Result Suspected Trouble Area Proceed to - EVAP pressure in step (b) between -4.85 kPa-g and -1.057 kPa-g (-36.4 mmHg-g and -7.93 mmHg-g) Not yet determined A P043F and P2401 EVAP pressure in step (b) -1.057 kPa-g (-7.93 mmHg-g) or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step (b) below -4.85 kPa-g (-36.4 mmHg-g) Reference orifice clogged C P2419 EVAP pressure in step (a) more than -1.057 kPa-g (-7.93 mmHg-g) Vent valve stuck closed D *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above. D --> See step 20 C --> See step 29 B --> See step 11 A: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5 TO 3/5) Check the EVAP pressure increase in step 3/5. Result DTCs* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 2/5 to step 3/5 Not yet determined A P2420 No variation in EVAP pressure despite proceeding from step 2/5 to step 3/5 Vent valve stuck open (vent) B P0451 No variation in EVAP pressure during steps 1/5 through 3/5 Canister pressure sensor output value stuck C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above. C --> See step 29 B --> See step 19 A: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) Wait until the EVAP pressure change is less than 0.1 kPa-g (0.75 mmHg-g) for 30 seconds. Measure the EVAP pressure and record it. HINT: A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes. NEXT: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 4/5) Check the EVAP pressure in step 4/5. Result DTCs* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined A P0441 EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Problems in EVAP hose between purge VSV and intake manifold B P0441 Variation in EVAP pressure less than 0.3 kPa-g (2.25 mmHg-g) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above. C --> See step 12 B --> See step 15 A: Go to next step
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 5/5) Check the EVAP pressure in step 5/5. Compare the EVAP pressure in step 3/5 and the second reference pressure (step 5/5). Result DTCs* Result Suspected Trouble Area Proceed to - EVAP pressure (step 3/5) lower than second reference pressure (step 5/5) Not yet determined (no leak from EVAP system) A P0455 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x 0.2] EVAP gross leak B P0441 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x 0.4] Purge VSV stuck open B P0456 EVAP pressure (step 3/5) higher than second reference pressure (step 5/5) EVAP small leak B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above. B --> See step 12 A --> See step 35
PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) Check the EVAP pressure in step 3/5. Result DTCs* Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured at 2/5 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured at 2/5 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" procedures above. HINT: The first reference pressure is the value determined in step 2/5. B --> See step 22 A --> See step 29
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. Start the engine. Using the tester, 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 tester, turn on the purge VSV (Activate the VSV for EVAP Control: ON). Use your finger to confirm that the purge VSV has suction. Result Result Suspected Trouble Area Proceed to No suction when purge VSV turned OFF, and suction applied when turned ON Purge VSV normal A Suction applied when purge VSV turned OFF Purge VSV stuck open B No suction when purge VSV turned ON Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold C Reconnect the hose. C --> See step 15 B --> See step 14 A: Go to next step
CHECK FUEL CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications. Tighten the fuel cap until a few click sounds are heard. HINT: If an EVAP tester is available, check the fuel cap using the tester. 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 (24 to 28 mmHg) using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa (15 mmHg) or more, the fuel cap is normal. Result 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 C --> See step 27 B --> See step 26 A --> See step 28
INSPECT PURGE VSV Turn the ignition switch to OFF. Disconnect the purge VSV connector. 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 Result Suspected Trouble Area Proceed to No suction ECM A Suction applied Purge VSV B Reconnect the purge VSV connector. Reconnect the hose. B --> See step 30 A --> See step 34
CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. Start the engine. Use your finger to confirm that the hose has suction. Result Result Suspected Trouble Area Proceed to Suction applied EVAP hose between purge VSV and intake manifold normal A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B Reconnect the hose. B --> See step 25 A: Go to next step
INSPECT PURGE VSV Remove the purge VSV. Apply the battery voltage to the terminals of the purge VSV. Confirm that air flows from port A to port B. Result Result Condition Suspected Trouble Area Proceed to Air flows Apply battery voltage to purge VSV terminals - A No air flow Apply battery voltage to purge VSV terminals Purge VSV B Reinstall the purge VSV. B --> See step 30 A: Go to next step
CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Result Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to C3-2 - Body ground Ignition Switch ON 11 to 14 V Normal A Other than result above Wire harness or connectors between purge VSV and battery B Reconnect the purge VSV connector. B --> See step 31 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 (Check for Open) Tester Connection Condition Specified Condition C19-49 (PRG) - C3-1 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C19-49 (PRG) or C3-1 - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the purge VSV connector. NG --> See step 31 OK --> See step 34
INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the ignition switch to OFF. Disconnect the canister pump module connector. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Result Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to L28-9 (VLVB) - Body ground Ignition switch ON 11 to 14 V Wire harness between vent valve and ECM Vent valve ECM A Below 3 V Power source wire harness of vent valve B Reconnect the canister pump module connector. B --> See step 31 A: Go to next step
INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the ignition switch to OFF. Disconnect the canister pump module connector. Apply the battery voltage to VLVB and VGND terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. Result Result Suspected Trouble Area Proceed to Operating Wire harness between vent valve and ECM ECM A Not operating Vent valve B Reconnect the canister pump module connector. B --> See step 29 A: Go to next step
CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the ECM connector. 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 A21-42 (VPMP) - L28-8 (VGND) Always Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B Reconnect the ECM connector. Reconnect the canister pump module connector. B --> See step 31 A --> See step 34
PERFORM ACTIVE TEST USING TECHSTREAM (FOR LEAK DETECTION PUMP) Turn the ignition switch to OFF. Disconnect the canister pump module connector. 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 Specified Condition Suspected Trouble Area Proceed to L28-1 (MTRB) - Body ground Leak detection pump ON and OFF (Active Test ON and OFF) Below 3 V when OFF 11 to 14 V when ON Wire harness between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON or 11 to 14 V when OFF and ON Wire harness between leak detection pump and ECM ECM B Reconnect the canister pump module connector. B --> See step 24 A: Go to next step
CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the ignition switch to 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 L28-6 (MGND) - Body ground Always Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness between canister pump module and body ground B Reconnect the canister pump module connector. B --> See step 31 A --> See step 29
CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the ignition switch to OFF. Disconnect the ECM connector. 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 A21-34 (MPMP) - L28-1 (MTRB) Always Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B Reconnect the ECM connector. Reconnect the canister pump module connector. B --> See step 31 A --> See step 34
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 Result Suspected Trouble Area Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B Reconnect the EVAP hose. B --> See step 33 A --> See step 32
CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP HINT: When reinstalling the fuel tank cap, tighten it until a few click sounds are heard. When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and install it until a few click sounds are heard. NEXT --> See step 36
REPLACE FUEL TANK CAP HINT: When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it until a few click sounds are heard. NEXT --> See step 36
LOCATE EVAP LEAK PART Disconnect the vent hose. Connect an EVAP tester to the canister pump module with the adapter. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg). Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates a leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and the 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 36
REPLACE CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(ref-388732-S17335451102011031100000) . 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. NEXT --> See step 36
REPLACE PURGE VSV Disconnect the connector and the hoses from the purge VSV. Remove the purge VSV. Install a new purge VSV. Reconnect the connector and hoses. NEXT --> See step 36
REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 36
REPLACE PURGE LINE HOSE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 36
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. NEXT --> See step 36
REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000) . NEXT --> See step 36
REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in. NEXT --> See step 36
PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of five 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. If the cut-off valve is closed, the fuel tank leak check is not possible. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-388734-S06424090862011031100000) . 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 selecting the following menu items: Powertrain / Engine and ECT / Trouble Codes / Pending. 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 328

Scheme 328: PROCEDURE

Scheme 329

Scheme 330

Scheme 331

Scheme 332

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 tester. 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 4B-11 (Main body ECU) - Body ground Ignition switch OFF Below 1 V 4F-4 (Main body ECU) - Body ground 4B-11 (Main body ECU) - Body ground Ignition switch ON 11 to 14 V 4F-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 1B-4 (Integration relay) - 4F-4 (Main body ECU) Always Below 1 ohms 1A-4 (Integration relay) - 4B-11 (Main body ECU) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 4F-4 (Main body ECU) - Body ground Always 10 kohms or higher 4B-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 4A-8 - 4B-11 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 4D-1 and 4E-5 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 4E-5 (Main body ECU) - A21-7 (FC) Always Below 1ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 4E-5 (Main body ECU) or A21-7 (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 Condition 4A-8 (Main body ECU) - L7-4 (Fuel pump) Always Below 1ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 4A-8 (Main body ECU) or L7-4 (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 Condition L7-5 (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 Remove the fuel pump. Inspect fuel pump resistance. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4 (+) - 5 (-) 20°C (68°F) 0.2 to 3.0 ohms Inspect fuel pump operation. Apply the battery voltage to both the terminals. Check that the pump operates. NOTE: These tests must be done quickly (within 10 seconds) to prevent the coil from burning out. Keep the fuel pump as far away from the battery as possible. Always turn the voltage on and off on the battery side, not the fuel pump side. OK The fuel pump operates normally. Reinstall the fuel pump. NG --> See step 12 OK --> See step 13
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 / All Data / Starter Signal. Check the result when the ignition switch is turned to ON and START. OK Ignition Switch Position Starter Signal ON Close START Open NG --> See step 14 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 / All Data / Engine Speed. Read the values displayed on the tester while cranking. OK Values are displayed continuously. NG --> See step 15 OK --> See step 16
GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-388739-S34858315402011031100000)
REPLACE MAIN BODY ECU. Refer to «REMOVAL - Step 71»(ref-388752-S04252607382011031100000)
REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-388742-S05286328372011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPAIR OR REPLACE STARTING SYSTEM. Refer to «INSPECTION PROCEDURE»(ref-388737-S11326284542011031100000)
REPAIR OR REPLACE CRANKSHAFT POSITION SENSOR CIRCUIT. Refer to «INSPECTION PROCEDURE»(ref-388738-S30106611402011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)

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

Scheme 333

Scheme 334

Scheme 335

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 C4-1 - Body ground Ignition switch ON 11 to 14 V C5-1 - Body ground Ignition switch ON 11 to 14 V C6-1 - Body ground Ignition switch ON 11 to 14 V C7-1 - 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) Disconnect the fuel injector connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 11.6 to 12.4 ohms Reconnect the fuel injector connectors. NG --> See step 9 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 C4-2 - C19-108 (#10) Always Below 1 ohms C5-2 - C19-107 (#20) Always Below 1 ohms C6-2 - C19-106 (#30) Always Below 1 ohms C7-2 - C19-105 (#40) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C4-2 or C19-108 (#10) - Body ground Always 10 kohms or higher C5-2 or C19-107 (#20) - Body ground Always 10 kohms or higher C6-2 or C19-106 (#30) - Body ground Always 10 kohms or higher C7-2 or C19-105 (#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 C19-45 (E01) - Body ground Always Below 1 ohms C19-44 (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»(ref-388742-S38387298712011031100000) . NG --> See step 9 OK --> See step 8
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 C4-1 - 1B-4 (Integration relay) Always Below 1 ohms C5-1 - 1B-4 (Integration relay) Always Below 1 ohms C6-1 - 1B-4 (Integration relay) Always Below 1 ohms C7-1 - 1B-4 (Integration relay) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C4-1 or 1B-4 (Integration relay) - Body ground Always 10 kohms or higher C5-1 or 1B-4 (Integration relay) - Body ground Always 10 kohms or higher C6-1 or 1B-4 (Integration relay) - Body ground Always 10 kohms or higher C7-1 or 1B-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 7
REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-388739-S34858315402011031100000)
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-388734-S31905740222011031100000)
REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-388742-S05379933692011031100000)

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

Scheme 336

Scheme 336: PROCEDURE

Scheme 337

Scheme 338

Scheme 339

Scheme 340

Scheme 341

Scheme 342

Scheme 343

Scheme 344

Scheme 345

READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Engine and ECT / Data List / All Data / Starter Signal. Check the result when the ignition switch is turned to ON and START positions. OK Ignition Switch Condition Starter Signal ON Close START Open NG --> See step 2 OK --> See step 13
INSPECT ECM (STSW TERMINAL VOLTAGE) Disconnect the ECM connector. Perform the cranking operation. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A21-14 (STSW) - Body ground Ignition switch ON Below 1 V Ignition switch START 9 to 13 V Reconnect the ECM connector. HINT: DTCs related to the communication with other computers may be set due to this inspection. Clear those DTCs after the inspection. NG --> See step 7 OK: Go to next step
INSPECT ECM (STAR TERMINAL OUTPUT 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 / Active Test / Control the All Cylinders Fuel Cut. Move the shift lever to the P or N position (for automatic transaxle models). Fully depress the clutch pedal (for manual transaxle models). Measure the voltage according to the value(s) in the table below. Standard Voltage (for automatic transaxle models) Tester Connection Switch Condition Specified Condition 10 (Junction Connector) - Body ground Ignition switch ON (P or N position) Below 1 V Cranking operation 9 to 13 V Standard Voltage (for manual transaxle models) Tester Connection Switch Condition Specified Condition A17-2 - Body ground Ignition switch ON (Accelerator pedal Fully depressed) Below 1 V Cranking operation 9 to 13 V HINT: The junction connector is in the engine room relay block and junction block as the illustration above. During this inspection, all connectors and relays should be connected. NG --> See step 8 OK: Go to next step
INSPECT CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH Inspect the Park/Neutral Position (PNP) switch connector (for automatic transaxle models). Disconnect the park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Shift Selector Lever Position Specified Condition 2-6, 4-5 P Below 1 ohms 1-2 R 2-9, 4-5 N 2-7 D 2-3 2 2-8 L Except above terminals All Positions 10 kohms or higher Reconnect the park/neutral position switch connector. Inspect the clutch start switch (for manual transaxle models). Disconnect the clutch start switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 ON (Pushed) Below 1 ohms 1 - 2 OFF (Not pushed) 10 kohms or higher Reconnect the clutch start switch connector. Result Result Proceed to Outside standard range A Within standard range (for automatic transaxle models) B Within standard range (for manual transaxle models) C C --> See step 6 B --> See step 5 A --> REPLACE CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH
CHECK HARNESS AND CONNECTOR (PNP SWITCH - ECM) Disconnect the Park/Neutral Position (PNP) switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C28-4 - C19-52 (STAR) Always Below 1 ohms Reconnect the PNP switch connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH OR PNP SWITCH - ECM - ST RELAY) Check the harness and connector (for automatic transaxle models). Remove the ST relay from the engine room relay block. Disconnect the Park/Neutral Position (PNP) switch 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 C28-5 - A21-48 (STA) Always Below 1 ohms C28-5 - 2 (ST relay) Always Below 1 ohms 1 (ST relay) - Body ground Always Below 1 ohms Reinstall the ST relay. Reconnect the park/neutral position switch connector. Reconnect the ECM connector. Check the harness and connector (for manual transaxle models). Remove the ST relay from the engine room relay block. Disconnect the clutch start switch 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 A17-1 - A21-48 (STA) Always Below 1 ohms A17-1 - 2 (ST relay) Always Below 1 ohms 1 (ST relay) - Body ground Always Below 1 ohms Reinstall the ST relay. Reconnect the clutch start switch connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE STARTER CIRCUIT (STARTER - ST RELAY)
INSPECT IGNITION SWITCH Remove the ignition switch. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition All terminals LOCK 10 kohms or higher 2 (ACC) - 4 (AM1) ACC Below 1 ohms 1 (IG1) - 2 (ACC) - 4 (AM1) ON 5 (AM2) - 6 (IG2) 1 (IG1) - 3 (ST1) - 4 (AM1) START 5 (AM2) - 6 (IG2) - 7 (ST2) Reinstall the ignition switch. NG --> See step 12 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - ECM)
INSPECT CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH Inspect the Park/Neutral Position (PNP) switch connector (for automatic transaxle models). Disconnect the park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Shift Selector Lever Position Specified Condition 2-6, 4-5 P Below 1 ohms 1-2 R 2-9, 4-5 N 2-7 D 2-3 2 2-8 L Except above terminals All Positions 10 kohms or higher Reconnect the park/neutral position switch connector. Inspect the clutch start switch (for manual transaxle models). Disconnect the clutch start switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - 2 ON (Pushed) Below 1 ohms 1 - 2 OFF (Not pushed) 10 kohms or higher Reconnect the clutch start switch connector. NG --> REPLACE CLUTCH START SWITCH OR PARK/NEUTRAL POSITION SWITCH OK: Go to next step
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH OR PNP SWITCH - IGNITION SWITCH AND ECM) Check the harness and connector (for automatic transaxle models). Disconnect the ignition switch connector. Disconnect the Park/Neutral Position (PNP) switch 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 F9-7 (ST2) - C28-4 Always Below 1 ohms C19-52 (STAR) - C28-4 Always Standard Resistance (Check for Short) Tester Connection Condition Specified Condition F9-7 (ST2) or C28-4 - Body ground Always 10 kohms or higher C19-52 (STAR) or C28-4 - Body ground Always HINT: The wire between the park/neutral position switch and the ignition switch has a diode «WIRING DIAGRAM»(ref-388739-S20465886062011031100000) . The current flowing to the park/ neutral position switch is rectified by the diode. Reconnect the ignition switch connector. Reconnect the clutch start switch connector. Reconnect the ECM connector. Check the harness and connector (for manual transaxle models). Disconnect the ignition switch connector. Disconnect the clutch start switch 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 F9-7 (ST2) - A17-2 Always Below 1 ohms C19-52 (STAR) - A17-2 Always Standard Resistance (Check for Short) Tester Connection Condition Specified Condition F9-7 (ST2) or A17-2 - Body ground Always 10 kohms or higher C19-52 (STAR) or A17-2 - Body ground Always HINT: The wire between the clutch start switch and the ignition switch has a diode refer to «WIRING DIAGRAM»(ref-388739-S20465886062011031100000) . The current flowing to the clutch start switch is rectified by the diode. Reconnect the ignition switch connector. Reconnect the clutch start switch connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH OR PNP SWITCH - ECM - ST RELAY) Check the harness and connector (for automatic transaxle models). Remove the ST relay from the engine room relay block. Disconnect the Park/Neutral Position (PNP) switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition C28-5 or A21-48 (STA) - Body ground Always 10 kohms or higher C28-5 or 2 (ST relay) - Body ground Always 10 kohms or higher Reinstall the ST relay. Reconnect the park/neutral position switch connector. Reconnect the ECM connector. Check the harness and connector (for manual transaxle models). Remove the ST relay from the engine room relay block. Disconnect the clutch start switch connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A17-1 or A21-48 (STA) - Body ground Always 10 kohms or higher A17-1 or 2 (ST relay) - Body ground Always 10 kohms or higher Reinstall the ST relay. Reconnect the clutch start switch connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE IGNITION SWITCH. Refer to «REMOVAL»(ref-388740-S24626244732011031100000)
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-388734-S31905740222011031100000)

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

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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 A21-24 (W) or F1-9 (EFI) - 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 10
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 12 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 A21-24 (W) - F1-9 (EFI) Always Below 1 ohms Reconnect the ECM connector. Reconnect the combination meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-388734-S31814561492011031100000)
REPLACE ECM. Refer to «REMOVAL»(ref-388735-S27161698942011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-388734-S30722680022011031100000)
GO TO VC OUTPUT CIRCUIT. Refer to «VC Output Circuit»(ref-388739-S22308028712011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)

Engine Control System (Diagnostic Codes (P1604-P2A00) & Circuit Tests): Diagnosis Scion xD I

INSPECTION PROCEDURE

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