N10 Test For Intermittent Short Circuit to Ground

- Install 60-pin breakout box and correct Econoline 4WABS overlay.

- Measure resistance between Pins 9 and 22 and known good chassis ground.

- A drive over rough road while resistance is being monitored is recommended.

- Is resistance less than 10k ohms detected?

YES -- Go to N4 to identify short circuit to ground.

NO -- Go to N11.