Dodge RAM TRUCK 1500 1995 Service Manual page 426

8E-16 INSTRUMENT PANEL AND GAUGES
— _ B R
TERMINAL END
WIRE END
N O . IDENTIFICATION
1
SENSOR GAUGE OUTPUT
2
SENSOR LAMP OUTPUT
J958E-21
Fig. 20 Oil Pressure Sending Unit Connector
Check for continuity between cavity 7 of cluster con­
nector B and a good ground. There should be no con­
tinuity. If OK, go to next step. If not OK, repair short
circuit as required.
(4) Check for continuity between cavity 7 of cluster
connector B and cavity 2 (black and tan wire) of
washer fluid level switch connector. There should be
continuity. If OK, replace lamp bulb. If not OK, re­
pair open circuit as required.
MALFUNCTION INDICATOR LAMP
The diagnosis found here addresses an inoperative
lamp condition. If the lamp comes on and stays on
with engine running, refer to Group 14 - Fuel System
for diagnosis. If no fuel or emission system problem
is found, the following procedure will help locate a
short or open in the lamp circuit.
(1) Disconnect battery negative cable. Unplug PCM
connector. Install a jumper wire from cavity 32 of
PCM connector (Fig. 21) to a good ground. Connect
battery negative cable. Turn ignition switch to ON.
Lamp should light. Remove jumper wire and lamp
should go OFF. If OK, refer to Powertrain Diagnostic
Procedures to check PCM. If not OK, go to next step.
(2) Turn ignition switch to OFF. Disconnect battery
negative cable. Remove instrument cluster bezel and
cluster assembly. Install a jumper wire from cavity 6
of cluster connector B (black connector) to a good
ground. Connect battery negative cable. Turn ignition
switch to ON. Lamp should light. If OK, go to next
step. If not OK, replace faulty bulb.
(3) Turn ignition switch to OFF. Disconnect battery
negative cable. Unplug cluster connector b. Check for
continuity between cavity 6 of cluster connector B
and a good ground. There should be no continuity. If
OK, go to next step. If not OK, repair short circuit to
PCM as required.
( N O . IDENTIFICATION
32 MALFUNCTION INDICATOR LAMP
36 GENERATOR WARNING LAMP
43 TACHOMETER SIGNAL
54 UPSHIFT INDICATOR LAMP
J958E-7
Fig. 21 Powertrain Control Module Connector
(4) Check continuity between cavity 6 of cluster
connector B and cavity 32 of PCM connector. There
should be continuity. If not OK, repair open circuit to
PCM as required.
MAINTENANCE REQUIRED INDICATOR LAMP
(1) Disconnect battery negative cable. Unplug PCM
connector. Remove instrument cluster bezel and clus­
ter assembly. Do not unplug cluster connectors.
(2) Install a jumper wire between cavity 5 of clus­
ter connector B (black connector) and a good ground.
Connect battery negative cable. Turn ignition switch
to ON position. Lamp should light. If OK, go to next
step. If not OK, replace faulty bulb.
(3) Turn ignition switch to OFF position. Discon­
nect battery negative cable and unplug cluster con­
nector B. Check for continuity between cavity 5 of
cluster connector B and 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 5 of cluster connector B,
check for continuity to cavity 56 of PCM connector.
There should be continuity. If OK, refer to Group 14 -
Fuel Systems for diagnosis of PCM. If not OK, repair
open circuit as required.
SEAT BELT REMUSSS&iS U*U*P
(1) Refer to Group * 8U - Chime/Buzzer Warning
Systems to check chime/buzzer module operation. If
OK, go to next step. If not OK, replace chime/buzzer
module.
(2) Disconnect battery negative cable. Remove in­
strument cluster bezel and cluster assembly. Unplug
cluster connector A (white connector). Check for con-