Test Dg - Introduction
NOTE:
Perform this test when Code 25 is received during QUICK TEST procedure or you are directed here by other diagnostic tests. Use DYNAMIC RESPONSE CHECK as specified in steps 1) and 6). There is no need to perform WOT during this test.
To prevent replacement of good components, be aware that the following non-EEC related areas may be at fault:
- Poor fuel quality
- Engine mechanical condition
- Spark timing
TEST PIN IDENTIFICATION
| Test Pin No. | Wire Color | |
|---|---|---|
| Pin 7 | ||
| 4.9L F Series Bronco/Pickup | Red | |
| All V8 Truck & Van Models | Light Green/Red | |
| All Other Truck Models | Light Green/Yellow | |
| Pin 25 | ||
| All E Series Econoline/Club Wagon | Yellow/Red | |
| All F Series Bronco/Pickup | Grey | |
| 2.3L Ranger | Yellow/Red | |
| Pin 46 | ||
| F Series Bronco/Pickup (All Engines) | Grey/Yellow | |
| All Other Truck Models | Black/White | |