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.
Circuit breakers CB5, CB6, CB12, CB20, CB22,
CB23 and relays R3, R13 - R19, R26, R28, R32,
and R33 are always electrically hot and can
cause severe injury to personnel. Care must be
exercised when working under the electrical
circuit board cover.
(1) Using a jumper wire, connect
connector MC29, terminal A to a
known good ground.
(2) Is there continuity on wire 1737
between relay R22, terminal 86 and a
known good ground?
(a) If there is no continuity, repair
wire 1737 (see schematic
Fig 2-58) or notify DS
(b) If there is continuity, perform
Steps (3) and (4) below.
(3) Connect crane connector to truck
(4) Install ECB covers with 15 screws.
Relay test must be performed with relay