2ZR-FE ENGINE CONTROL SFI SYSTEM Engine Stalls
DESCRIPTION
| Problem Symptom | Suspected Area | Trouble Area | |
|---|---|---|---|
·
Engine speed fluctuation due to abnormal combustion ·
Idle speed too low or high Strong engine vibration due to above symptoms |
·
Ignition malfunction ·
Deviation in air fuel ratio (Excessive or insufficient intake air volume or fuel supply) ·
Insufficient compression ·
Changes in load from another system |
Ignition system | ·
Spark plug ·
Ignition coil assembly |
| Fuel system | ·
Fuel injector assembly ·
Fuel pump ·
Fuel pump control circuit ·
Fuel line ·
Purge VSV system ·
Fuel quality (existence of foreign matter, degradation) |
||
| Intake and exhaust systems | ·
Mass air flow meter sub-assembly ·
Intake system (Air leaks or deposit accumulation) ·
Throttle body assembly ·
Air fuel ratio sensor ·
Heated oxygen sensor ·
Camshaft timing oil control valve assembly ·
Variable Valve Timing system (VVT system) ·
Brake booster assembly |
||
| Other control systems | ·
ECM ·
Wire harness or connector ·
Knock control sensor ·
Engine coolant temperature sensor |
||
| Engine | ·
Thermostat ·
Engine assembly |
||
| High load from another system | ·
Air conditioning system ·
Power steering system ·
Electrical load signal system ·
CVT system |
||
- HINT:
- ·
If any other DTCs are output, perform troubleshooting for those DTCs first.
·Make sure to reproduce the conditions present when the malfunction occurred.
·Using the GTS, read the Data List to confirm the engine operating conditions. This information can be useful when troubleshooting.
·If the problem symptoms do not recur, attempt to reproduce the symptoms and conditions when the malfunction occurred based on the result of the customer problem analysis. Place the priority on confirming the symptoms.
SYMPTOM AND CAUSE OF SYSTEM MALFUNCTION
- HINT:
-
The following are descriptions of the characteristics of each system malfunction. After understanding the link between the causes and symptoms, perform the inspection of each component. Even if the problem symptom does not recur, signs of the malfunction may be found in the Data List.
Ignition system
| Main cause of malfunction | Performance degradation (wear, existence of foreign matter, etc.) |
| Symptom | Engine speed fluctuation due to abnormal combustion |
| Data List | Cylinder Misfire Count |
|
|
| Main cause of malfunction | Internal malfunction |
| Problem symptom | Engine speed fluctuation due to abnormal combustion |
| Data List | Cylinder Misfire Count |
Fuel system
| Main cause of malfunction | Blockage |
| Problem symptom | ·
Engine speed fluctuation due to abnormal combustion ·
Idle speed too low or high |
| Data List | ·
Short FT ·
Long FT ·
Fuel System Status ·
Target Air-Fuel Ratio ·
AF Lambda ·
A/F Learn Value Idle ·
A/F Learn Value Low ·
A/F Learn Value Mid1 ·
A/F Learn Value Mid2 ·
A/F Learn Value High ·
Total FT |
|
|
| Main cause of malfunction | Purge VSV stuck open |
| Symptom | Engine speed fluctuation due to abnormal combustion |
| Data List | ·
EVAP (Purge) VSV ·
Evap Purge Flow ·
Purge Density Learn Value ·
EVAP Purge VSV ·
Purge Cut VSV Duty |
|
| Main cause of malfunction | ·
Fuel degradation due to age or water contamination ·
Low fuel quality ·
Addition of fuel additive |
| Problem symptom | ·
Engine speed fluctuation due to abnormal combustion ·
Idle speed too low or high ·
Engine is difficult to start |
Intake and exhaust systems
| Main cause of malfunction | Performance degradation (existence of foreign matter, etc.) |
| Problem symptom | Lack of power |
| Data List | MAF |
|
|
| Main cause of malfunction | Inappropriate trim volume adjustment due to accumulation of deposits |
| Problem symptom | ·
Engine speed fluctuation due to abnormal combustion ·
Idle speed too low or high |
| Data List | ·
Eng Stall Control FB Flow ·
ISC Position ·
ISC Feedback Learning Torque ·
ISC Total AUXS Torque ·
ISC Feedback Torque ·
ISC Feedback Torque(Resent) ·
ISC AUXS Torque(Alternator) ·
ISC AUXS Torque(Air Conditioner) ·
Throttle Air Flow F/B Value |
| Main cause of malfunction | Deviation in sensor characteristics |
| Problem symptom | Abnormal combustion due to deviation of actual air fuel ratio from calculated ratio |
| Data List | ·
AFS Voltage ·
O2S ·
Fuel System Status |
Engine
| Main cause of malfunction | ·
Compression loss ·
Accumulation of deposits (Combustion chamber, intake valve or intake manifold) |
| Problem symptom | ·
Engine speed fluctuation due to abnormal combustion ·
Idle speed too low or high ·
Hesitation during acceleration or stalling |
|
|
| Main cause of malfunction | Camshaft timing oil control valve assembly stuck open |
| Symptom | Abnormal combustion due to excessive valve overlap |
| Data List | ·
VVT Control Status #1 ·
VVT Advance Fail ·
VVT Aim Angle #1 ·
VVT Change Angle #1 ·
VVT OCV Duty #1 ·
VVT Ex Hold Lrn Val #1 ·
VVT Ex Chg Angle #1 ·
VVT Ex OCV Duty #1 |
CVT system
| Main cause of malfunction | Shift solenoid valve SLU stuck on |
| Symptom | Engine stall due to delay in lock-up OFF operation when lock-up OFF is requested |
| Data List | ·
Engine Speed ·
SPD (NT) ·
Shift SW Status (D Range) ·
SPD (NIN) ·
SPD (NOUT) |
|
|
Data List Items Related to Engine Stalls
- HINT:
-
Depending on the vehicle model, the applicable Data List items may vary. Data List items other than the ones used in the diagnostic procedure are for reference only.
- ·
Eng Stall Control FB Flow
·Deposit Loss Flow
·ISC Position
·ISC Feedback Learning Torque
·ISC Total AUXS Torque
·ISC Feedback Torque
·ISC Feedback Torque(Resent)
·ISC AUXS Torque(Alternator)
·ISC AUXS Torque(Air Conditioner)
·Throttle Air Flow F/B Value
·Short FT
·Long FT
·Fuel System Status
·Target Air-Fuel Ratio
·AF Lambda
·A/F Learn Value Idle
·A/F Learn Value Low
·A/F Learn Value Mid1
·A/F Learn Value Mid2
·A/F Learn Value High
·Total FT
·MAF
·Cylinder Misfire Count
·AFS Voltage
·O2S
·Engine Speed
·SPD (NT)
·Shift SW Status (D Range)
·SPD (NT)
·SPD (NOUT)
·VVT Control Status #1
·VVT Advance Fail
·VVT Aim Angle #1
·VVT Change Angle #1
·VVT OCV Duty #1
·VVT Ex Hold Lrn Val #1
·VVT Ex Chg Angle #1
·VVT Ex OCV Duty #1
PROCEDURE
Interview the customer for details about the conditions when the engine stalled.
- HINT:
- ·
Use any information from the customer problem analysis about the conditions of the vehicle when the malfunction occurred (how the engine stalled, conditions when the engine was restarted, etc.)
·Depending on the conditions when the engine stalled, a malfunction in one of the following areas is suspected.
Symptom Suspected Area Engine vibration occurs and engine stalls ·Abnormal mass air flow meter sub-assembly output due to existence of foreign matter
·Abnormal air fuel ratio due to malfunction of air fuel ratio sensor or heated oxygen sensor, air leaks in intake system or insufficient fuel supply
Engine stalls without vibration Ignition stoppage, fuel injection stoppage or high load from another system Engine can be started with accelerator pedal depressed Insufficient air volume Engine stalls or is difficult to start immediately after engine stalled, regardless of whether engine is cold or warm Deposits in intake system or combustion chamber caught temporarily on intake or exhaust valve
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Perform a road test.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTC is output
(DTCs other than P1603, P1604 or P1605 are output)B
A
B
Check if the problem symptoms reported in the customer problem analysis recur.
- HINT:
-
If the problem symptoms do not recur, attempt to reproduce the conditions when the malfunction occurred based on the result of the customer problem analysis.
- Result:
Result Proceed to The problem symptom recurs A The problem symptom does not recur (occurred in the past) B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / ISC Feedback Learning Torque.
- Powertrain > Engine and ECT > Data List
-
Tester Display ISC Feedback Learning Torque - 50003 234 731
Read the value displayed on the GTS.
- Result:
Result Proceed to Less than 4 Nm A Other than above B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Short FT B1S1 and Long FT B1S1.
- Powertrain > Engine and ECT > Data List
-
Tester Display Short FT B1S1 Long FT B1S1 - 50003 234 25,26
Read the value displayed on the GTS.
- Result:
Data List Result Proceed to Short FT B1S1 + Long FT B1S1 -15% or higher, or less than 15% A Other than above B
- HINT:
- ·
"Total FT" is used to detect an abnormal air fuel ratio. As the value of "Total FT" is corrected by the ECM before it is displayed in the Data List, the displayed value may not be equal to the sum of the measured "Short FT" and "Long FT".
·An abnormally lean or rich tendency can be checked by reading the following Data List items: A/F Learn Value Idle, A/F Learn Value Low, A/F Learn Value Mid1, A/F Learn Value Mid2 and A/F Learn Value High. (For vehicles equipped with a V type engine, check that both banks have the same correction tendency. If the correction of either bank is -15% or less or +15% or more, the air fuel ratio sensor or heated oxygen sensor of that bank may be malfunctioning.)
·The following may cause a lean air fuel ratio (an operating range in which the air fuel ratio learned value correction is +15% or more):
1.Decrease in fuel injector assembly injection volume
2.Decrease in mass air flow meter sub-assembly output (due to existence of foreign matter)
3.Air leaks in intake system after mass air flow meter sub-assembly
4.Decrease in fuel pressure (at fuel filter, fuel pump or fuel pressure regulator assembly)
·On vehicles which the learning value for each operating range can be checked, if the value of "A/F Learn Value Idle" or "A/F Learn Value Low" only is corrected to the positive side, an air leak after the mass air flow meter sub-assembly is suspected.
·The following may cause a rich air fuel ratio (an operating range in which the air fuel ratio learned value correction is -15% or less):
1.Increase in the fuel injector assembly injection volume
2.Purge VSV system
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine.
- HINT:
-
Reproduce the vehicle conditions when the malfunction occurred. (such as after the engine is warmed up or after a cold start).
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Select Cylinder Fuel Cut / All Data / Engine Speed.
- Powertrain > Engine and ECT > Active Test
-
Active Test Display Control the Select Cylinder Fuel Cut -
Data List Display Engine Speed - 50004 234 235 9
According to the display on the GTS, perform the Active Test and check for a malfunctioning cylinder.
- HINT:
- ·
Perform fuel-cut for each cylinder and check the change in the engine speed.
·If the engine speed of a cylinder does not change while performing the Active Test, it can be determined that the cylinder is malfunctioning.
·If the engine speed of all cylinders change while performing the Active Test, it can be determined that multiple cylinders are malfunctioning.
·A cylinder for which the Data List item "Cylinder Misfire Count" increases may be malfunctioning.
·If "Compression Leakage Count" in the Data List increases, misfiring due to insufficient compression may be occurring.
- Result:
Result Proceed to One cylinder is malfunctioning A Multiple or all cylinders are malfunctioning, or the malfunctioning cylinder cannot be determined. B
A
B
- HINT:
-
If the vehicle does not support the Active Test "Check the Cylinder Compression", measure the compression pressure. If the compression pressure is normal, go to step 8.
Warm up the engine.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Check the Cylinder Compression / All Data / Engine Speed of Cyl #1 to #4 and Av Engine Speed of All Cyl.
- Powertrain > Engine and ECT > Active Test
-
Active Test Display Check the Cylinder Compression -
Data List Display Engine Speed of Cyl #1 Engine Speed of Cyl #2 Engine Speed of Cyl #3 Engine Speed of Cyl #4 Av Engine Speed of All Cyl - 50004 234 111 379,380,381,382,389
- HINT:
-
To display the entire Data List, press the pull down menu button next to Primary. Then select Compression.
Push the snapshot button to turn the snapshot function on.
- HINT:
-
Using the snapshot function, data can be recorded during the Active Test.
While the engine is not running, press the RIGHT or LEFT button to change Check the Cylinder Compression to ON.
- HINT:
-
After performing the above procedure, Check the Cylinder Compression will start. Fuel injection for all cylinders is prohibited and each cylinder engine speed measurement enters standby mode.
Crank the engine for about 10 seconds.
- HINT:
-
Continue to crank the engine until the values change from the default value (51199 rpm).
Monitor the engine speed (Engine Speed of Cyl and Av Engine Speed of All Cyl) displayed on the GTS.
- NOTICE:
- ·
Do not crank the engine continuously for 20 seconds or more.
·If it is necessary to crank the engine again after Check the Cylinder Compression has been changed to ON and the engine has been cranked once, press Exit to return to the Active Test menu screen. Then change Check the Cylinder Compression to ON and crank the engine.
·Use a fully-charged battery.
- HINT:
-
At first, the GTS displays extremely high cylinder engine speed values. After approximately 10 seconds of engine cranking, each cylinder engine speed measurement will change to the actual engine speed.
Stop cranking the engine, and then change "Check the Cylinder Compression" to OFF after the engine stops.
- NOTICE:
- ·
If the Active Test is changed to OFF while the engine is being cranked, the engine will start.
·When performing the Active Test, DTC P1604 (Startability Malfunction) may be stored.
·After performing the Active Test, make sure to check and clear DTCs.
Check the change in engine speed values.
- HINT:
- ·
If the value of Data List item "Engine Speed of Cyl #1 to #4" of a cylinder is higher than other cylinders, the cylinder may be malfunctioning.
·If the value of Data List item "Engine Speed of Cyl #1 to #4" is high for only one cylinder, compression loss is suspected.
- Result:
Result Proceed to There is no variation in "Engine Speed of Cyl #1 to #4"
(All cylinders display approximately the same value for "Engine Speed of Cyl #1 to #4")A There is variation in "Engine Speed of Cyl #1 to #4"
(Only one cylinder displays a value for "Engine Speed of Cyl #1 to #4" that differs considerably)B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
Idle the engine.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume.
- Powertrain > Engine and ECT > Active Test
-
Tester Display Control the Injection Volume - 50004 234 1
According to the display on the GTS, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume.
- HINT:
-
Change the fuel injection volume between the minimum and maximum range of correction (e.g. -12.5% to 24.8%).
- Result:
Result Proceed to Malfunction is still present even if the fuel injection volume is changed A Malfunction disappears when the fuel injection volume is changed B
A
B
Check the ignition system.
- HINT:
- ·
Interchange the ignition coil assembly and spark plug of the malfunctioning cylinder with those of a known good cylinder and check if the malfunctioning cylinder returns to normal.
·If the spark plug of the malfunctioning cylinder is abnormally wet with fuel even after the ignition coil assembly and spark plug are replaced, a leaking fuel injector assembly is suspected.
- Result:
Result Proceed to The malfunctioning cylinder does not return to normal A The malfunctioning cylinder returned to normal B
A
B
Check the power source circuit, wire harness and connectors.
- Result:
Proceed to NEXT
NEXT
Clean off any deposits from the inside of the throttle body assembly.
Push open the throttle valve and wipe off any carbon from the valve and bore using a piece of cloth soaked in non-residue solvent.
| *1 | Throttle Body Assembly | *2 | Bore |
| *3 | Valve | - | - |
| *a | Reference | *b | Throttle Body Assembly Cross-section Diagram |
| *c | When valve fully opened | *d | Do not directly apply cleaner |
| *e | Deposits | - | - |
- NOTICE:
- ·
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 assembly or wash the throttle body assembly. 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.
- HINT:
-
The illustrations are for reference only. Actual parts may differ.
- Result:
Proceed to NEXT
NEXT
Perform "Inspection After Repair" after cleaning the throttle body assembly.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
Allow the engine to idle for 3 minutes or more and confirm that the engine speed is within the specified range.
- HINT:
-
If the engine is operated without performing learning value reset and idle learning after cleaning the deposits from the throttle body assembly, the idle speed may increase.
- Result:
Proceed to NEXT
NEXT
Measure the cylinder compression pressure. If the compression pressure of a cylinder is low, inspect the engine assembly and repair or replace parts as necessary.
Click hereEngine / Hybrid System>2ZR-FE ENGINE MECHANICAL>ENGINE>ON-VEHICLE INSPECTION
- Result:
Proceed to NEXT
NEXT
Replace the fuel injector assembly of the malfunctioning cylinder.
Click hereEngine / Hybrid System>2ZR-FE FUEL>FUEL INJECTOR>REMOVAL
- HINT:
- ·
If the air fuel ratio learned value is corrected to the positive side for all operating ranges due to low fuel injector assembly injection volume, replace the fuel injector assemblies of all cylinders.
·Perform "Inspection After Repair" after replacing the fuel injector assembly.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF.
- Powertrain > Engine and ECT > Data List
-
Tester Display MAF - 50003 234 3
According to the display on the GTS, read the Data List when the ignition switch is turned to ON and while maintaining an engine speed of 3000 rpm.
- Result:
Result Proceed to Other than below A Ignition switch ON (engine stopped): 1 gm/sec or higher
Engine speed 3000 rpm (without load): Less than 7.6 gm/secB
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up until the engine coolant temperature 75°C (167°F) or higher with all the accessories switched off.
Warm up the air fuel ratio sensor at an engine speed of 2500 rpm for 90 seconds.
Idle the engine.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1S1 and O2S B1S2.
- Powertrain > Engine and ECT > Active Test
-
Active Test Display Control the Injection Volume for A/F Sensor -
Data List Display AFS Voltage B1S1 O2S B1S2 - 50004 234 2 35,44
According to the display on the GTS, perform the Active Test and check the vehicle conditions when increasing and decreasing the fuel injection volume.
- NOTICE:
- ·
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.
·Read the output voltage immediately after warming up the air fuel ratio sensor and heated oxygen sensor to avoid an inaccurate reading due to a sensor cooling.
- HINT:
-
The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 12.5%.
- Standard:
GTS Display
(Sensor)Injection Volume Voltage AFS Voltage B1S1
(Air fuel ratio)12.5% Below 3.1 V -12.5% Higher than 3.4 V O2S B1S2
(Heated oxygen)12.5% Higher than 0.55 V -12.5% Below 0.4 V
- Result:
Result Proceed to Output voltage values are abnormal A Malfunction disappears when fuel injection volume is increased B Malfunction is still present when fuel injection volume is increased, even if output voltage values are normal C
A
B
C
Replace the air fuel ratio sensor.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>AIR FUEL RATIO SENSOR>REMOVAL
- HINT:
-
Perform "Inspection After Repair" after replacing the air fuel ratio sensor.
-
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION
Replace the heated oxygen sensor.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>HEATED OXYGEN SENSOR>REMOVAL
- Result:
Proceed to NEXT
NEXT
Replace the fuel injector assemblies of all cylinders.
Click hereEngine / Hybrid System>2ZR-FE FUEL>FUEL INJECTOR>REMOVAL
- HINT:
-
Perform "Inspection After Repair" after replacing the fuel injector assembly.
-
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION
- Result:
Proceed to NEXT
NEXT
Check for air leaks or blockage in the intake system components. If a connection problem or foreign matter is found, repair the connection or remove the foreign matter.
- HINT:
- ·
If there is foreign matter in the intake system components, remove it before proceeding to the next step.
·If there is no foreign matter in the intake system components, check for foreign matter in the mass air flow meter sub-assembly. If there is foreign matter in the mass air flow meter sub-assembly, remove it.
- Result:
Proceed to NEXT
NEXT
- HINT:
-
Inspect the EFI-MAIN fuse before inspecting the circuit relay.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
- Powertrain > Engine and ECT > Active Test
-
Tester Display Control the Fuel Pump / Speed - 50004 234 5
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
- Result:
Proceed to OK NG
OK
NG
Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping the engine.
Click hereEngine / Hybrid System>2ZR-FE FUEL>FUEL SYSTEM>ON-VEHICLE INSPECTION
- Standard:
Vehicle State Specified Condition Cranking engine 304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi) 5 minutes after stopping engine 147 kPa (1.5 kgf/cm2, 21 psi) or higher
- HINT:
- ·
If there is foreign matter such as iron particles on the fuel pump, remove it.
·Make sure that there are no leaks from the fuel lines, signs of fuel leakage or fuel odors.
- Result:
Result Proceed to Abnormal A Normal B
A
B
Inspect the following fuel pump related parts:
Fuel pump
Fuel pressure regulator assembly
Fuel lines and connecting parts
Fuel filter
- Result:
Proceed to NEXT
NEXT
Inspect other related components.
- HINT:
-
If the malfunctioning part could not be determined by performing the preceding inspections, one of the following malfunctions is suspected.
- ·
Deposits in the intake manifold or on an intake valve
·Delay in fuel supply due to adherence of the fuel to the deposits
- Result:
Proceed to NEXT
NEXT
Inspect the fuel pump control system.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>Fuel Pump Control Circuit
- Result:
Proceed to NEXT
NEXT
Repair or replace the malfunctioning part.
Perform "Inspection After Repair" after repairing or replacing the malfunctioning part.
Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION
- Result:
Proceed to NEXT
NEXT
Check that the engine has returned to normal.
- Result:
Proceed to NEXT
NEXT