B4 Conclude Red Parking Lamp Is Functioning Properly

- Key Off.

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

- Key On.

- Measure voltage at Pin 21.

- Is there 10 volts or greater present?

YES -- Defective ABS module. Replace module. Go to B12.

NO -- Open or resistive short in Circuit 162 (LG/R). Find and repair wiring fault. Go to B12.