Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1993TEMPO LX, 2.3 X, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYSTEM/COMPONENT TESTS - EEC-IVIGNITION SYSTEMNOTES
1993 Ford Tempo LX, 2.3 X, Standard
Ignition System: Notes
1993 Ford Tempo LX, 2.3 X, StandardSECTION Notes
NOTE:
For additional information and descriptions, see IGNITION SYSTEM in THEORY/OPERATION
article in the ENGINE PERFORMANCE Section. Perform appropriate SPARK OUTPUT CHECK under IGNITION CHECKS in BASIC TESTING
article in the ENGINE PERFORMANCE Section before entering these tests.
IGNITION SYSTEM ACRONYMS
| Acronym (1) | Definition | ||||
|---|---|---|---|---|---|
| B + Or B (+) | Battery Positive | ||||
| B- Or B (-) | Battery Negative | ||||
| C1, C2, C3 | Coil Drive (Coils 1, 2 & 3) | ||||
| DI | Distributor Ignition System | ||||
| EI (2) | Electronic Ignition (High Data Rate Or Low Data Rate) | ||||
| DPI | Dual Plug Inhibit (High Signal - Right Plugs Fire, Low Signal - Both Sides Fire) | ||||
| FTO | Filtered Tach Output | ||||
| ICM | Ignition Control Module | ||||
| IDM | Ignition Diagnostic Monitor (Diagnostic Signal To PCM) | ||||
| IGND | Ignition Ground (Low Current Ground Reference) | ||||
| 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 (EEC-Processor, Computer, Processor) | ||||
| PIP | Profile Ignition Pick-Up (Camshaft Position Sensor Signal) | ||||
| PWR GND | Power Ground Circuit To ICM | ||||
| SPOUT | Spark Output (PCM Spark Control Signal) | ||||
| VPWR Or VBAT | Battery Power Or Battery Voltage | ||||
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IGNITION SYSTEM IDENTIFICATION
| Application | System | |||
|---|---|---|---|---|
| Continental | (1) DI | |||
| Cougar & Thunderbird | ||||
| 3.8L Except SC | (1) DI | |||
| 3.8L SC (Thunderbird Only) | EI | |||
| 5.0L | (1) DI | |||
| Crown Victoria, Grand Marquis & Town Car | EI (High Data Rate) | |||
| Escort & Tracer 1.9L | EI (High Data Rate) | |||
| Mark VII | EI (High Data Rate) | |||
| Mustang | ||||
| 2.3L OHC | EI (Low Data Rate) | |||
| 5.0L | DI | |||
| Probe 2.0L | (1) DI | |||
| Sable & Taurus | ||||
| 3.0L & 3.2L | EI (Low Data Rate) | |||
| 3.0L Flex Fuel | EI (High Data Rate) | |||
| 3.0L SHO | EI (Low Data Rate) | |||
| 3.8L | (1) DI | |||
| Tempo & Topaz | ||||
| 2.3L HSC | DI | |||
| 3.0L | (1) DI | |||
|
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.