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
(1) Disconnect transfer case start switch.
(2) Connect positive (+) multimeter lead
to transfer case start switch harness
connector MC57, terminal B.
(3) Connect negative () multimeter lead
to a known good ground.
(4) Turn ON ENGINE switch
(a) If 22 to 28 vdc are not
present, turn OFF ENGINE switch
and repair wire 1093
(see schematic Fig 2-72), or notify
(b) If 22 to 28 vdc are present,
wire 1093 is OK.
(5) Turn OFF ENGINE switch.
(1) Set multimeter select switch to ohms.
(2) Is there continuity between terminal A
and terminal B on transfer case start
(a) If there is no continuity, replace
switch (Para 7-83).
(b) If there is continuity, repair wire
1095 (see schematic Fig 2-72) or
notify DS Maintenance.
(3) Connect start switch connector.
Relay test must be performed with relay