(1) Connect positive (+) multimeter lead
to reverse relay R10, terminal 86.
(2) Connect negative () multimeter lead
to a known good ground.
(3) Turn ON ENGINE switch
(a) If 10 to 14 vdc are not present,
turn OFF ENGINE switch and
repair wire 1871 (see schematic
Fig 2-33) or notify DS
(b) If 10 to 14 vdc are present,
wire 1871 is OK.
(4) Turn OFF ENGINE switch.
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, R33
are always electrically hot and can cause severe
working under the electrical circuit board cover.
(1) Loosen screw and disconnect
(2) Set multimeter select switch to ohms.
(3) Is there continuity between reverse
relay R10, terminal 86 and harness
connector MC9, terminal 2D?
(a) If there is no continuity, repair
wire 214 (see schematic Fig 2-33)
or notify DS Maintenance.
(b) If there is continuity, wire 214
(4) Connect connector MC9 and
Relay tests must be performed with
relay partially removed.