Diagnostic Aids
WARNING: This page is about a different car, the 1994 Mercury Sable, 1994 Mercury Cougar, 1994 Lincoln Continental, 1994 Ford Thunderbird, and 1994 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
PINPOINT TESTS A, AA, AAA, B and C are intended to diagnose hard faults. Intermittent failures may be difficult to diagnose using these procedures. Following information should be noted during testing:
- All voltage readings given in test procedures are based on values obtained using a standard DVOM such as Rotunda (007 -00001) or Fluke (20 or 70 Series). DO NOT use RMS type meter.
- When instructed to inspect a wiring harness, perform both a visual inspection and a continuity test.
- When making voltage checks, ground connections should be made at negative battery terminal or cast iron surface of engine.
- When making measurements on a wiring harness or connector, perform a wiggle test while measuring.
- When making voltage checks, ground readings are defined as a value of less than 1.0 volt. Battery voltage is defined as a value of more than 10 volts.
- Circuits are identified in all capitals, for example: PIP. Manufacturer's breakout box overlay test terminals are identified by a "J" prefix, for example: J15 (PIP). This indicates test terminal number and circuit identification.
- Test procedures are intended to identify faulty components or wiring while fault is present. If complaint is an intermittent condition, see the article TESTS W/O CODES - EEC-IV (3.8L) in the ENGINE PERFORMANCE section.
NOTE:
Start all diagnostics with QUICK TEST. See appropriate TESTS W/CODES - EEC-IV (3.8L)
article in the ENGINE PERFORMANCE section. These tests are dependent on results and diagnostic trouble codes received during QUICK TEST.
DI PINPOINT TEST INDEX
| Application | Pinpoint Test/Step | |||
|---|---|---|---|---|
| No Start & No Codes Present | ||||
| Distributor Mounted ICM | A/1 | |||
| Remote Mounted ICM | AA/1 | |||
| No Start & Code 211 Or | ||||
| 212 Present (PIP At PCM Fault) | ||||
| Distributor Mounted ICM | A/1 | |||
| Remote Mounted ICM | AA/1 | |||
| Vehicle Runs Normal Until SPOUT | ||||
| In-Line Connector Disconnected | (1) AAA/1 | |||
| Code 212 (Engine Runs, IDM Missing | B/1 | |||
| Code 213 (Timing Incorrect, SPOUT Open, | ||||
| Poor Fuel Economy Or Poor Driveability) | C/1 | |||
|
||||