(1) Set multimeter select switch to
(2) Connect positive (+) multimeter lead
to connector MC15, terminal B.
(3) Connect negative () multimeter lead
to known good ground.
(4) While assistant applies brake pedal,
(a) If 22 to 28 vdc are not present,
release brake pedal and go to
Step 2 of this Fault.
(b) If 22 to 28 vdc are present, wire
1003C is OK. Release brake
pedal and go to Trailer
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.