Laser 5091 Code Reader User’s Guide
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Laser 5091 Code Reader User’s Guide
25
Figure 4-35 Sample O2 Monitor Test screen
3. Use the up and down arrow keys to scroll through data to select lines, and left and right arrow
keys to scroll back and forth through different screens of data.
Figure 4-36 Sample O2 Bank1 Sensor 1 Screen
4. Press ENTER key to view data of selection.
Figure 4-37 Sample data of $81 screen
5. Press the BACK key to exit and return.
4.7 On-Board Monitor Test
The On-Board Monitor Test function is useful after servicing or after clearing a vehicle ECU’s
memory. It receives test results for emission-related powertrain components and systems that
are not continuously monitored for Non-CAN vehicles. And for CAN vehicles, it receives test data
for emission-related powertrain components and systems that are and are not continuously
monitored. It is vehicle manufacturer who is responsible for assigning test and component IDs.
NOTE
Test results do not necessarily indicate a faulty component or system.
To request on-board monitor test results:
1. Use the UP/DOWN key to highlight On-Board Monitor Test from Diagnostic Menu and press
the ENTER key.
Figure 4-38 Sample Diagnostic Menu Screen
2. Depending on the protocol the vehicle used, one of these 2 screens shows.
Figure 4-39 Sample Non-CAN Vehicle Test Screen
Or
Figure 4-40 Sample CAN vehicle test screen
3. Use the UP/DOWN key to highlight a test group and press the ENTER key to confirm. A screen
with details of the selected sensor displays. Use the up and down arrow keys to scroll through
data to select lines, and left and right arrow keys to scrol
l back and forth through different
screens of data.
For non-CAN vehicles, test screen is as illustrated on next page:
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