Test Ff - Introduction
NOTE:
Perform this test when Service Code 52 is displayed during QUICK TEST or when directed here by other test procedures. Some vehicles may not have power steering, but the ECA may be equipped with PSPS software strategy. If a KOEO Code 52 is displayed, check to see that vehicle is equipped with power steering. If not, disregard Code 52.
NOTE:
This test is intended to diagnose only the following:
- Power Steering Pressure Switch (PSPS)
- Harness circuits (PSPS and SIG RTN)
- ECA
WIRE COLOR IDENTIFICATION
| Application (Pin No.) | Wire Color | |
|---|---|---|
| Pin 46 | ||
| F-Series & Bronco | Gray/Red | |
| All Others | Black/White | |
| Pins 24, 23, 2 or 3 | Yellow/Light Green | |
To prevent replacement of good components, be aware that the following non-EEC related areas may be at fault: idle speed/throttle stop adjustment, binding throttle shaft/linkage or cruise control linkage.