Dodge RAM TRUCK 1500 1995 Service Manual page 425

BR
INSTRUMENT PANEL AND GAUGES 8E - 15
tery negative cable and test operation. If OK, discard
faulty bulb. If not OK, replace faulty low fuel warn­
ing printed circuit.
LOW OIL PRESSURE WARNING LAMP
The diagnosis found here addresses an inoperative
lamp condition. If the problem being diagnosed is re­
lated to lamp accuracy, be certain to confirm that
problem is with lamp and not with engine oiling sys­
tem. Actual engine oil pressure should be checked
with a test gauge before you proceed with lamp diag­
nosis. Refer to Group 9 - Engines for more informa­
tion.
(1) Turn ignition switch to ON. Disconnect oil pres­
sure sending unit connector (Figs. 17, 18 or 19). In­
stall a jumper wire between cavity 2 of sending unit
connector (Fig. 20) and a good ground. The lamp
should light. Remove jumper wire and lamp should
go off. If OK, replace sending unit. If not OK, go to
next step.
OIL PRESSURE -
SENDING UNIT
Fig. 17 Oil Pressure Switch/Sending Unit •
Engine
J938E-35
(2) Turn ignition switch to OFF. Disconnect battery
negative cable. Remove instrument cluster bezel and
cluster assembly. Disconnect instrument cluster con­
nector B (black connector).
(3) Probe cavity 4 of cluster connector B and check
for continuity to a good ground. There should be no
continuity. If OK, go to next step. If not OK, repair
short circuit as required.
(4) Still probing cavity 4 of cluster connector B,
check for continuity to cavity 2 of sending unit wire
connector (Fig. 20). There should be continuity. If
OK, replace lamp bulb. If not OK, repair open circuit
as required.
LOW WASHER FLUID WARMING LAMP
(1) Unplug washer fluid level switch connector. In­
stall a jumper wire between two cavities of connector.
Turn ignition switch to ON. Lamp should light. Re-
Fig. 18 Oil Pressure
Swiich/Senc
Engine
STEERING
. PUMP
ENGINE BLOCK
Jf119-74
Fig. 19 Oil Pressure Switch/Sending Unit - Diesel
Engine
move jumper and lamp should go off. If OK, replace
washer fluid level switch. If not OK, go to next step.
(2) Turn ignition switch to OFF position. Check for
continuity between washer fluid level switch connec­
tor cavity 1 (black wire) and a good ground. There
should be continuity. If OK, go to next step. If not
OK, repair open circuit to ground as required.
(3) Disconnect battery negative cable. Remove ~ in­
strument cluster bezel and cluster assembly. Unplug
instrument cluster connector B (black connector).