The 3.1 version software for the Omitec PDA Ignition Analyzer includes Coil-On-Plug (COP) primary and secondary ignition tests. The primary ignition signal can be accessed through the primary circuit on the vehicle's ignition module. Secondary ignition testing requires special coil adapters for each manufacturer's coil design. Those coil adapters can be purchased from Omitec.
The COP tests are accessed through the Quick Ignition selection on the Main Menu, Figure 1. The next step is to select the appropriate coil probe from the Quick Ignition Menu, Figure 2 , by pressing the F3 key. Choose the COP probe from the probe menu - Figure 3. There are 7 COP probes available at this time. If your probe choice is not on the menu, press the F2 key (F2-NEW) and program the probe name and gain into the PDA. Contact your local Omitec representative or call tech support for assistance. Your probe selection will be displayed in the 'USING COP 1 KV PROBE' box at the bottom of the QUICK IGNITION MENU in Figure 2.
Figure 1
Figure 2
Figure 3
Select IGNITION WAVEFORM and press the ENTER key and the SECONDARY ignition screen will appear Figure 4. Next press the F2-UTILITY key and select COP TRIGGER SYNC from the menu in Figure 5. The SYNC selection will appear with an up and down arrow. Press the down arrow once and SECN will synchronize the secondary ignition pattern on the screen. Press the down arrow twice and PRIM will synchronize the primary pattern when Primary display is selected. Primary and Secondary selection is made by pressing the F4 key and the secondary or primary selection will appear at the top of the scope screen Figure 6. It is necessary choose a SYNC selection for the scope to display a waveform. The advantage to having an internal sync is that only one coil connection is required to display a signal.
To view Ignition coil Primary voltage, press the down arrow twice from the menu in Figure 5. Most COP coils' primary patterns can be accessed by back probing the primary circuit at the coil by using the primary (PRIM) connection on the Ignition Module. Always connect the ground lead before testing any circuit. This test does not require any special probes. The primary pattern is not accessible on some new coils because the igniter (power transistor) is incorporated inside the coil assembly. These systems receive a timing control signal from the PCM to the coil, typically a square waveform. If a primary or secondary signal cannot be acquired and there is system voltage at the coil assembly, then the timing signal should be tested with the lab scope.
Figure 4
Figure 5
Figure 6
The QUICK IGNITION scope has many adjustments that can be made from the scope screen Figure 7. These adjustments can be made by highlighting the selection and pressing the enter key. The kV level can be adjusted from a low of 6kV to a high of 45kV. The INV selects the polarity. If the pattern appears to be up side down, Highlight the INV and press enter to invert the pattern. The TIME BASE can be adjusted from 1MS to 200MS per scope division. The default time of 2MS should be sufficient for most testing. The RPM selection adds digital values to the screen, Figure 8. The default SYNC POS (Sync Position) is identified by the small arrow at the lower left corner of the scope screen. The signal sync position can be repositioned by highlighting the SYNC POS and pressing the enter key.
There are two POWER FEATURES that are located in the Utility (F2-UTIL) menu, refer back to Figure 5. These functions are PLAY and SAVE. The QUICK IGNITION scope is always recording and up to 50 screens can be immediately reviewed by pressing F-3 to stop the recording and then pressing F-2 and selecting PLAY. The CHOOSE REPLAY FILE menu will appear. The top selection, CURRENT, will be highlighted. Press the ENTER key and replay the last 50 screens. Select PLAY from the menu and a list of 8 files will appear. The current screens can be saved to one of the 8 files that are stored in the memory of the program card and will remain there until you choose to delete the file. Figure 9 is an example of a screen from a saved file. The file menu ( not pictured) will identify the file by date, time and secondary or primary pattern. Figure 9 identifies which file was selected. The 1 ms/6 sec, at the lower left corner of the screen, indicates one millisecond per division time base setting and the total recorded time of six seconds. The 28/50 identifies the screen as #28 out of 50 total in the file.
Figure 7
Figure 8
Figure 9
