Mode 6 Data

2TR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: CHECKING MONITOR STATUS

The purpose of the monitor result (mode 06) is to allow access to the results for on-board diagnostic monitoring tests of specific components/systems that are not continuously monitored. Examples are catalyst, evaporative emission (EVAP) and thermostat.

The monitor result allows the Techstream to display the monitor status, test value, minimum test value and maximum test limit. These data are displayed after the vehicle has been driven to run the monitor.

When the test value is not between the minimum test limit and maximum test limit, the ECM (PCM) interprets this as a malfunction. When the component is not malfunctioning, if the difference of the test value and test limit is very small, the component will malfunction in the near future. Perform the following instructions to view the monitor status. Although these instructions refer to the Lexus/Toyota diagnostic tester, it can be checked using a generic OBD II scan tool. Refer to your scan tool operator's manual for specific procedures.

1. PERFORM MONITOR DRIVE PATTERN

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON and the Techstream on.

(c) Clear DTCs DTC Check / Clear.

(d) Run the vehicle in accordance with the applicable drive pattern described in READINESS MONITOR DRIVE PATTERN Monitors, Trips, Drive Cycles and Readiness Codes. Do not turn the ignition switch off.

NOTICE:
The test results will be lost if the ignition switch is turned off.

2. ACCESS MONITOR RESULT

(a) Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / Result.

(b) Confirm the monitor status for each component.

HINT
The monitor status for each component is displayed in the Result column.

* Pass: The component is functioning normally.
* Fail: The component is malfunctioning.

(c) Display the test results for a monitor by selecting the icon in the Details column for that monitor.

(d) Display the test value for an item listed under Test Results by selecting the icon in the Details column for that item.

3. CHECK COMPONENT STATUS

(a) Compare the test value with the minimum test limit (MIN) and maximum test limit (MAX).

(b) If the test value is between the minimum test limit and maximum test limit, the component is functioning normally. If not, the component is malfunctioning. The test value is usually significantly higher or lower than the test limits. If the test value is on the borderline of the test limits, the component will malfunction in the near future.

HINT
The monitor result might on rare occasions be Pass even if the malfunction indicator lamp (MIL) is illuminated. This indicates the system malfunctioned on a previous driving cycle. This might be caused by an intermittent problem.

4. MONITOR RESULT INFORMATION

If you use a generic scan tool, multiply the test value by the scaling value listed below.

Advance/Retarded Intake Side:





Air Fuel Ratio Sensor:





Heated Oxygen Sensor:





Rear Oxygen Sensor Heater:





Catalyst - Bank 1:





Rear Oxygen Sensor Heater





EVAP:





Secondary Air Injection (AIR) Bank 1:





Misfire:





HINT
*: EWMA (Exponential Weighted Moving Average) misfire counts for last 10 driving cycles (calculated) Calculation: 0.1 x (current counts) + 0.9 x (previous average) Initial value for (previous average) = 0