Test Fa - Introduction
NOTE:
Perform this test when Service Code 67 or 79 is displayed during QUICK TEST or when directed here by other test procedures. This test is designed to diagnose the following:
- A/C input to ECA
- Clutch Engagement Switch (CES)
- Neutral Clutch Switch (NCS)
- Neutral Drive Switch (NDS)
- Neutral Gear Switch (NGS)
- ECA
- Harness circuits (CES, NCS, NDS, NGS, ACC, ACCS & SIG RTN)
TEST PIN WIRE COLOR IDENTIFICATION
| Application (Pin No.) | Wire Color | |
|---|---|---|
| Pin 10, A/C Input | ||
| 3.0L, 4.0L (Aerostar) 4.9L, 5.0L 5.8L & 7.5L | Black/Yellow | |
| 2.3L, 2.9L & 4.0L (Ranger) | Tan/Yellow | |
| Pin 30, NDS | ||
| 2.3L, 2.9L | White/Black | |
| 4.9L & 5.8L (E-Series) | Brown/White | |
| 4.9L, 5.8L & 7.5L (F-Series & Bronco) | Gray/Yellow | |
| 5.0L (E-Series) | Light Blue/White | |
| 5.0L (F-Series & Bronco) | Light Blue/Yellow | |
| Pin 46, SIG RTN | ||
| 4.9L, 5.0L, 5.8L, 7.5L & 7.3L Diesel (F-Series & Bronco) | Gray/Yellow | |
| All Others | Black/White | |