Diagnostic Aids
Following information should be noted during testing:
- When checking a wiring harness, perform both a visual inspection and a continuity test. Inspect terminal connector pins for damage, bending, spreading and corrosion when directed to remove a connector.
- Spark timing adjustments are not possible. Timing is controlled by EDIS module with input from ECA.
- When checking voltage drop to GROUND, circuit must have a voltage drop of less than one volt.
- Battery voltage (VBAT) is any voltage reading within 2 volts of actual battery voltage.
- EEC-IV Breakout Box (T83L-50-EEC-IV) connected to EDIS diagnostic cable is referred to as breakout box or EDIS breakout box. If a second breakout box is connected to ECA vehicle harness connector, it will be referred to as second or ECA breakout box. This setup allows testing of EDIS components and vehicle harness circuits.
NOTE:
A 12-volt incandescent (high voltage) test light should not be used to test circuit signals. It will load circuit and may cause incorrect measurements or faulty EDIS/ECA operations (engine stall).
4.6L EDIS PINPOINT TEST INDEX
| Result | Pinpoint Test & Step | |||||
|---|---|---|---|---|---|---|
| No Start | ||||||
| No Codes | A1 | |||||
| KOEO Code 111 "PASS Code" | A1 | |||||
| KOEO Code 226 | A1 | |||||
| Continuous Memory Code 211 (PIP Signal At ECA Fault) | A1 | |||||
| "CHECK ENGINE" Light On During Cranking | A1 | |||||
| Engine Runs | ||||||
| KOER Code 213 (No System Response To SAW Commands During Self-Test) | C1 | |||||
| Continuous Memory Code 212 Or 226 (IDM Signal Fault At ECA) | B1 | |||||
| Continuous Memory Code 215 And/Or 216 (Coil 1 Or Coil 2 Fault) | D19 | |||||
| Continuous Memory Code 217 And/Or 238 (Coil 3 Or Coil 4 Fault) | D3 | |||||
| Lack Of Power Or Poor Fuel Economy | C1 | |||||
| Engine Miss | (1) | |||||
| Engine Intermittent Driveability Complaint | (2) | |||||
|
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WARNING:
DO NOT connect ECA to EDIS diagnostic cable; 60-pin connector on this harness may be connected to a breakout box only. If ECA is connected to EDIS diagnostic cable, ECA may be damaged. Some tests may require a second breakout box to be connected to ECA 60-pin connector. When a second breakout box is used, ECA should be disconnected at all times. Never connect ECA to breakout box when performing EDIS diagnostics.