Ignition Systems: Notes
WARNING: This page is about a different car, the 1996 Mercury Villager and 1995 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For additional information and descriptions, see IGNITION SYSTEMS in THEORY/OPERATION
article. Perform spark output check in BASIC TESTING - 3.0L
article before these tests. Some ignition systems require that QUICK TEST be performed before testing. This will retrieve trouble codes from PCM memory. See TESTS W/CODES
article.
IGNITION SYSTEM ACRONYMS (1)
| Acronym | Definition | ||
|---|---|---|---|
| BAT+ Or BAT (+) | Battery Positive | ||
| BAT- Or BAT (-) | Battery Negative | ||
| BOB | Breakout Box | ||
| CCD | Computer Controlled Dwell | ||
| CID | Cylinder Identification | ||
| C1, C2, C3 | Coil Drive (Coils 1, 2 & 3) | ||
| DI | Distributor Ignition System | ||
| ICM | Ignition Control Module | ||
| IDM | Ignition Diagnostic Monitor (Diagnostic Signal To PCM) | ||
| KOEC | Key On Engine Cranking (Testing Condition) | ||
| KOEO | Key On Engine Off (Testing Condition) | ||
| KOER | Key On Engine Running (Testing Condition) | ||
| PCM | Powertrain Control Module | ||
| PIP | Profile Ignition Pickup (Crankshaft Sensor Signal) | ||
| PWR GND | Power Ground Circuit | ||
| SPOUT | Spark Output (PCM Spark Control Signal) | ||
| VPWR Or VBAT | Battery Power Or Battery Voltage | ||
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