Chrysler RAM TRUCK 2500 1994 Service Manual page 413

8E - 16 INSTRUMENT PANEL AND GAUGES
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HIGH BEAM
(1) Pull instrument cluster from dash. Do not un­
plug cluster connectors. Refer to Instrument Cluster
Replacement for removal procedures,
The b u l b l o c a t i o n is labeled o n the cluster
printed circuit. Refer to Group 8W - Wiring Di­
agrams for terminal information.
(2) With headlamps on high beam, check for bat­
tery voltage between B+ terminal and ground termi­
nal of bulb. I f OK, replace bulb. I f not OK, continue
to next step.
(3) With headlamp switch i n OFF position, check
for continuity between ground terminal of bulb and
cluster connector A, cavity #10. I f OK, continue to
next step. I f not OK, replace cluster printed circuit
board.
(4) Unplug cluster connector A (white) and check
for continuity between cavity #10 and a good ground.
There should be continuity. I f OK, continue to next
step. I f not OK, repair open circuit to ground as re­
quired.
(5) With headlamps on high beam, check for bat­
tery voltage at cluster connector A (white), cavity
#13. I f OK, continue to next step. I f not OK, go to
step (7).
(6) With headlamps still on high beam, check for
battery voltage at B+ terminal of bulb. I f not OK, re­
place cluster printed circuit board.
(7) With headlamp switch i n OFF position, check
continuity between cluster connector A, cavity #13
and L3 splice i n headlamp and dash wiring harness.
I f not OK, repair open circuit as required. I f OK, re­
fer to Group 8J - Turn Signals for diagnosis of multi­
function switch.
LOW FUEL
The low fuel warning lamp is controlled by the low
fuel warning lamp circuit and module assembly. This
circuit relies upon a properly functioning fuel gauge
for operation. Therefore, make all necessary repairs
to fuel gauge and fuel tank sending unit circuits be­
fore attempting repair or diagnosis of the low fuel
warning.
(1) Pull instrument cluster from dash. Do not un­
plug cluster connectors. Refer to Instrument Cluster
Replacement for removal procedures.
The bulb location is labeled on the cluster
printed circuit. Refer to Group 8W - Wiring Di­
agrams for terminal information.
(2) Fuel level must be below 1/8 full (as indicated
on fuel gauge) or, a 100 ohm resistor must be in­
stalled between fuel tank sending unit connector "in­
put to gauge" cavity and ground. Turn ignition switch
in ON position and wait for 30 seconds. Then check
for battery voltage between B+ terminal and ground
terminal of bulb. I f OK, replace bulb. I f not OK, con­
tinue to next step.
(3) With ignition switch i n OFF position, unplug
cluster connector A (white). Check for continuity be­
tween connector A, cavity #6 and ground. Then re­
peat continuity check between connector A, cavity
#10 and ground. There should be continuity. I f OK,
continue to next step. I f not OK, repair open circuit
to ground as required.
(4) I f above tests have not revealed a problem, re­
place low fuel warning circuit and module assembly.
LOW WASHER FLUID
(1) Pull instrument cluster from dash. Do not un­
plug cluster connectors. Refer to Instrument Cluster
Replacement for removal procedures.
The bulb location is labeled on the cluster
printed circuit. Refer to Group 8W - Wiring Di­
agrams for terminal information.
(2) Unplug low washer level sensor connector and
install a jumper wire between connector and ground.
With ignition switch i n ON position, check for bat­
tery voltage between bulb B+ and ground terminals.
I f OK, replace bulb. I f not OK, continue to next step.
(3) With ignition switch i n ON position, check for
battery voltage between B+ terminal of bulb and a
known good ground. I f OK, go to step (5). I f not OK,
continue to next step.
(4) Unplug cluster connector B (black). With igni­
tion switch i n ON position, check for battery voltage
at connector cavity #8. I f OK, replace cluster printed
circuit board. I f not OK, repair open circuit to fuse
#12 as required.
(5) With ignition switch i n OFF position, check for
continuity between ground terminal of bulb and clus­
ter connector B (black), cavity #7. There should be
continuity. I f OK, continue to next step. I f not OK,
replace cluster printed circuit board.
(6) Check for continuity from cluster connector B
(black), cavity #7 to low washer level sensor. I f not
OK, repair circuit as required. I f OK, replace faulty
sensor. Refer to Group 8K - Windshield Wiper and
Washer Systems for service of sensor.