Dodge RAM TRUCK 1500 1995 Service Manual page 428

8E -18 INSTRUMENT PANEL AND GAUGES
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OK, turn ignition switch to OFF, remove jumper wire
and go to next step. If not OK, replace faulty bulb.
(4) Disconnect battery negative cable. Unplug mes­
sage center connector and PCM connector. Check for
continuity between cavity 2 of message center con­
nector and a good ground. There should be no conti­
nuity. If OK, go to next step. If not OK, repair short
circuit as required.
(5) Still probing cavity 2 of message center connec­
tor, check for continuity to cavity 35 of PCM connec­
tor. There should be continuity. If OK, refer to Group
14 - Fuel Systems to diagnose PCM and its inputs. If
not OK, repair open circuit to PCM connector as re­
quired.
CLUSTER ILLUMINATION LAMPS
(1) Check fuse 13 in fuseblock module. If OK, go to
next step. If not OK, replace fuse.
(2) Turn park lamps on at headlamp switch. Rotate
headlamp switch knob counterclockwise to just before
interior lamps detent. Check for battery voltage at
fuse 13 in fuseblock module. Rotate headlamp switch
clockwise while observing test voltmeter. Reading
should go from battery voltage to zero volts. If OK,
go to next step. If not OK, repair open circuit to
headlamp switch or refer to Group 8L - Lamps to di­
agnose headlamp switch.
(3) Disconnect battery negative cable. Remove in­
strument cluster bezel and cluster assembly. Unplug
cluster connector B (black connector). Connect bat­
tery negative cable. Turn park lamps on at headlamp
switch. Rotate headlamp switch knob counterclock­
wise to just before interior lamps detent. Check for
battery voltage at cavity 1 of cluster connector B. If
OK, go to next step. If not OK, repair open circuit to
fuse as required.
(4) Turn park lamps off. Disconnect battery nega­
tive cable. Remove fuse 13 from fuseblock module.
Probe cavity 1 of cluster connector B. Check for con­
tinuity to a good ground. There should be no continu­
ity. If OK, go to next step. If not OK, repair short
circuit as required.
(5) Probe cavity 1 of cluster connector B. Check for
continuity to output side of cavity for fuse 13. There
should be continuity. If OK, replace illumination
bulb(s). If not OK, repair open circuit as required.
(4) Check for continuity between cavity 3 of cluster
connector A and cavity 54 of PCM connector. There
should be continuity. If not OK, repair open circuit as
required.
WAIT-TOSTART LAMP
(1) Disconnect battery negative cable. Remove in­
strument cluster bezel and message center. Unplug
message center connector.
(2) Connect battery negative-cable. Turn ignition
switch to ON position. Check for battery voltage at
cavity 3 of message center connector. If OK, turn ig­
nition switch to OFF position and go to next step. If
not OK, refer to Group 8W - Wiring Diagrams and
repair circuit to ignition feed as required.
(3) Plug message center connector into message
center, install a jumper wire between cavity 4 - of
message center connector and a good ground. Turn
ignition switch to ON position. Bulb should light. If
OK, turn ignition switch to OFF, remove jumper wire
and go to next step. If not OK, replace faulty bulb.
(4) Disconnect battery negative cable. Unplug mes­
sage center connector and PCM connector. Check for
continuity between cavity 4 of message center con­
nector and a good ground. There should be no conti­
nuity. If OK, go to next step, if not OK, repair short
circuit as required.
(5) Still probing cavity 4 of message center connec­
tor, check for continuity to cavity 36 of PCM connec­
tor. There should be continuity, if OK, refer to Group
14 - Fuel Systems to diagnose PCM and its inputs. If
not OK, repair open circuit as required.
WATER-IN-FUEL LAMP
(1) Disconnect battery negative cable. Remove in­
strument cluster bezel and message center. Unplug
message center connector.
(2) Connect battery, negative cable. Turn ignition
switch to ON position. Check for battery voltage at
cavity 3 of message center connector. If OK, turn ig­
nition switch to OFF position and go to next step. If
not OK, refer to Group 8W - Wiring Diagrams - and
repair circuit to ignition feed as required.
(3) Plug message center connector into message
center. Install a jumper wire between cavity 2 of
message center connector and a good ground. Turn
ignition switch to ON position. Bulb should light. If