Part 4

1NR-FE ENGINE CONTROL: SFI SYSTEM: DATA LIST / ACTIVE TEST

Electrical Load Signal 1





Electrical Load Signal 2





Electrical Load Signal 3





Electrical Load Signal 4





22. Various Vehicle Conditions 5 (Vehicle Information)

Model Code





Engine Type





Cylinder Number





Transmission Type





Destination





Model Year





System Identification





23. Compression (Compression)

Engine Speed of Cyl #1 to #4





Av Engine Speed of All Cyl





24. Continuously Variable Transaxle System 1 (All Data)

Refer to Continuously Variable Transaxle System Data List / Active List.

SPD (NT)





25. Continuously Variable Transaxle System 2 (AT)

Refer to Continuously Variable Transaxle System Data List / Active List.

SPD (NOUT)





A/T Oil Temperature 1





Lock Up





Shift Status





26. ACTIVE TEST

HINT
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Warm up the engine.

(b) Turn the ignition switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Powertrain / Engine and ECT / Active Test.

(g) According to the display on the Techstream, perform the Active Test.













NOTICE:

*1:

* If the display of the Data List item Catalyst OT MF F/C item is Not Avl, perform this Active Test with the vehicle stopped and the engine idling.
* If the display of the Data List item Catalyst OT MF F/C item is Avail, perform this Active Test as described below.
(1) Stop the engine, turn the ignition switch to ON.
(2) Enter the Control the Select Cylinder Fuel Cut.
(3) Select the cylinder for fuel cut (cylinder #1 to #4) and turn the Active Test ON (press the RIGHT or LEFT button).
(4) Start the engine.

HINT
*2: In this Active Test, the fuel and ignition of all cylinders is cut. The engine must then be cranked for approximately 10 seconds. At this time, the speed of each cylinder is measured. If the speed of one cylinder is more than the other cylinders, it can be determined that the compression pressure of that cylinder is lower than the other cylinders.

(1) Warm up the engine.

(2) Turn the ignition switch off.

(3) Connect the Techstream to the DLC3.

(4) Turn the ignition switch to ON.

(5) Turn the Techstream on.

(6) Enter the following menus: Powertrain / Engine and ECT / Active Test / Check the Cylinder Compression.

HINT
To display the entire Data List, press the pull down menu button next to Primary. Then select Compression.

(7) Push the snapshot button to turn the snapshot function on.

HINT
Using the snapshot function, data can be recorded during the Active Test.

(8) 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.

(9) Crank the engine for about 10 seconds.

HINT
Continue to crank the engine until the values change from the default value (51199 rpm).

(10)




Monitor the engine speed (Engine Speed of Cyl #1 to #4) displayed on the Techstream.

HINT
At first, the Techstream 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.

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.

(11) 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.

(12) Push the snapshot button to turn the snapshot function off.

(13) Select "Stored Data" on the Techstream screen, select the recorded data and display the data as a graph.

HINT
If the data is not displayed as a graph, the change of the values cannot be observed.

(14) Check the change in engine speed values.

HINT
As the data values of the Active Test return to their default values when cranking is stopped, the engine speed value of each cylinder cannot be observed. Therefore, it is necessary to use the data recorded with the snapshot function to check the engine speed values recorded during cranking.

Reference Waveforms for Active Test

* *3: Control the Injection Volume (Idling after warming up)





HINT
During the Active Test, air fuel ratio feedback control and feedback learning are stopped.





HINT
* Usually, the value of AFS Voltage changes to below 3.1 V when the control value for Control the Injection Volume is changed to +12%.
* Usually, the value of AFS Voltage changes to 3.4 V or higher when the control value for Control the Injection Volume is changed to -12%.
* Usually, the value of O2S changes to 0.55 V or higher when the control value for Control the Injection Volume is changed to +12%.
* Usually, the value of O2S changes to below 0.4 V when the control value for Control the Injection Volume is changed to -12%.

* *4: Control the ETCS Open/Close Fast Speed [Active Test for electrical throttle control system] (Ignition switch ON)





HINT
* Usually, Throttle Position Command (Target Value) and Throttle Position No. 1 (Actual Value) are almost the same.
* If any DTCs related to the ETCS are stored, this Active Test does not function.





* *5: Activate the VSV for Evap Control (Idling after warming up)





HINT
Even when the Active Test is turned on (the purge VSV is opened 30%), air fuel ratio feedback continues and control is performed so that the air fuel ratio is the stoichiometric ratio. Therefore, by observing the change in "Short FT", it is possible to determine whether the purge VSV is actually open as well as the concentration of HC in the purge gas.





HINT
The graphs and values above are for reference only because the fuel injection volume (compensation volume) varies depending on the HC density of the purge air from the canister.

* *6: Control the VVT Linear (Bank 1)









HINT
* *: Change the control value for Control the VVT Linear to +25% or -25% in increments of 5%.
* The Control the VVT Linear Active Test considers the value of VVT Aim Angle to be 0 and raises or lowers the duty ratio with respect to VVT Aim Angle.
* The sum of the control value for the Control the VVT Linear Active Test and the value of VVT Aim Angle is approximately equal to the value of VVT OCV Duty.
* When the control value for the Control the VVT Linear Active Test is changed a few times, there should not be a large discrepancy between VVT OCV Duty when the system starts advancing or retarding the timing and the rate of change of VVT Change Angle.

* *7: Control the VVT Exhaust Linear (Bank 1)









HINT
* *: Change the control value for Control the VVT Exhaust Linear to +25% or -25% in increments of 5%.
* The Control the VVT Exhaust Linear Active Test considers the value of VVT Ex Hold Lrn Val to be 0 and raises or lowers the duty ratio with respect to VVT Ex Hold Lrn Val.
* The sum of the control value for the Control the VVT Exhaust Linear Active Test and the value of VVT Ex Hold Lrn Val is approximately equal to the value of VVT Ex OCV Duty.
* When the control value for the Control the VVT Exhaust Linear Active Test is changed a few times, there should not be a large discrepancy between VVT Ex OCV Duty when the system starts advancing or retarding the timing and the rate of change of VVT Ex Chg Angle.

27. SYSTEM CHECK

HINT
Performing a System Check enables the system, which consists of multiple actuators, to be operated without removing any parts. In addition, it can show whether or not any DTCs are stored, and can detect potential malfunctions in the system. The System Check can be performed with the Techstream.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Utility.

(e) Perform the System Check by referring to the table below.