Part 2

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





7. Air Fuel Ratio Control

Target Air-Fuel Ratio





AF Lambda B1S1, B2S1





AFS Voltage B1S1, B2S1





AFS Current B1S1, B2S1





A/F Heater Duty #1, #2





O2S B1S2, B2S2





O2S Impedance B1S2, B2S2





O2 Heater B1S2, B2S2





O2 Heater Curr Val B1S2, B2S2





Short FT #1, #2





Long FT #1, #2





Total FT #1, #2





Fuel System Status #1, #2





8. Secondary Air Injection System

Air Pump Pressure (Absolute)





Air Pump2 Pressure (Absolute)





Air Pump Pulsation Pressure





Secondary Air Control VSV





2nd Air System Status





AI Test





9. Ignition System

IGN Advance





Knock Feedback Value








Knock Correct Learn Value





Idle Spark Advn Ctrl #1 to #8





10. Intake Control

ACIS VSV





11. EGR System

Target EGR Position





EGR Step Position





12. VVT Control

Actual VVT Angle #1, #2





Actual VVT Ex Angle #1, #2





VVT Control Status #1, #2





VVT Advance Fail





VVT Aim Angle #1, #2





VVT Change Angle #1, #2





VVT OCV Duty #1, #2





VVT Ex Hold Lrn Val #1, #2





VVT Ex Chg Angle #1, #2





VVT Ex OCV Duty #1, #2





13. Catalyst

Catalyst Temp B1S1, B2S1





Catalyst Temp B1S2, B2S2





14. Various Vehicle Conditions 2

Starter Signal





Power Steering Signal





Neutral Position SW Signal





Stop Light Switch





A/C Signal





Idle Up Signal





Closed Throttle Position SW





Fuel Cut Condition





Immobilizer Communication

22. 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 engine switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the engine switch on (IG).

(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 engine switch on (IG) and turn Control the Cylinder #1 Fuel Cut (to Control the Cylinder #8 Fuel Cut) ON.
(2) Start the engine.

HINT
*2: When cranking the engine, each cylinder measures the engine speed.

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.

Warm up the engine.

Turn the engine switch off.

Connect the Techstream to the DLC3.

Turn the engine switch on (IG).

Turn the Techstream on.

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.

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 #1 to #8) 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.

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.

Push the snapshot button to turn the snapshot function off.

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.

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.