FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

F4

F4 BEGIN INTERMITTENT DIAGNOSIS

- Key "OFF."

- Install the EEC IV 60-Pin Breakout Box.

- Measure the resistance between pins 10 and 22 of the breakout box.

Is the resistance greater than 4,000 ohms?

> Yes
F3

> No
F5