Dodge RAM TRUCK 1500 1995 Service Manual page 427

B R INSTRUMENT PANEL AND GAUGES 8E - 17
tinuity between cavity 10 of cluster connector A and
a good ground. There should be continuity. If OK,
plug cluster connector A back into cluster and go to
next step. If not OK, repair open circuit to ground as
required.
(3) Connect battery negative cable. Install a
jumper wire between a 12-volt battery feed and cav­
ity 1 of cluster connector A. Lamp should light. If
OK, go to next step. If not OK, replace bulb.
(4) Disconnect battery negative cable. Unplug
chime/buzzer module from fuseblock module. Unplug
cluster connector A. Check for continuity between
cavity 1 of cluster connector A and a good ground.
There should be no continuity. If OK, go to next step.
If not OK, repair short circuit to chime/buzzer mod­
ule as required.
(5) Check continuity between cavity 1 of cluster
connector A and cavity for terminal A3 of chime/
buzzer module (Fig. 22) in fuseblock module. There
should be continuity. If not OK, repair open circuit to
chime/buzzer module as required.
A4
f
*| A3
f
*] A2 A1
f
VIEWED FROM TERMINAL END
NO. IDENTIFICATION
A3 SEAT BELT REMINDER LAMP
Fig. 22 Chime/Buzzer IWoduie Receptacle
TRANSMISSION OIL TEMPERATURE
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 transmission oil
cooling system. Proper transmission oil flow and
cooler operation should be checked before you pro­
ceed with lamp diagnosis. For diagnosis and service
of the sensor and transmission oil cooling system, re­
fer to Group 21 - Transmission and Transfer Case.
(1) Disconnect battery negative cable. Remove in­
strument cluster bezel and message center. Connect
battery negative cable. Turn ignition switch to ON
position. Check for battery voltage at cavity 3 of mes­
sage center connector. If OK, go to next step. If not
OK, repair circuit to fuse 12 as required.
(2) Turn ignition switch to OFF position. Install a
jumper wire between cavity 8 of message center con­
nector and a good ground. 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, message center connector
and PCM connector. Check for continuity between
cavity 8 of message center connector and a good
ground. There should be no continuity. If OK, go to
next step. If not OK, repair short circuit as required.
(4) Check for continuity between cavity 8 of mes­
sage center connector and cavity 31 of PCM connec­
tor. There should be continuity. If OK, refer to Group
21 - Transmission and Transfer Case to diagnose sen­
sor. If not OK, repair open circuit as required.
TURN SIGNAL INDICATOR LAMPS
(1) Disconnect battery negative cable. Remove in­
strument cluster bezel and cluster assembly. Probe
cavity 10 of cluster connector A (white connector).
Check for continuity to a good ground. There should
be continuity. If OK, go to next step. If not OK, re­
pair open circuit to ground.
(2) Connect battery negative cable. Install a
jumper wire from cavity 12 (left indicator) or cavity
14 (right indicator) of cluster connector A (white con­
nector) to a 12-volt battery feed. Lamp should light.
If OK, continue to next step. If not OK, replace bulb.
(3) Disconnect battery negative cable. Check for
continuity between cavity 12 (left indicator) or cavity
14 (right indicator) of cluster connector 1 and cavity
16 (left front turn signal) or cavity 11 (right front
turn signal) of multi-function switch connector. There
should be continuity. If OK, refer to Group 8J - Turn
Signals And Hazard Warning Flasher for further di­
agnosis. If not OK, repair open circuit as required.
UPSHIFT INDICATOR LAMP
(1) Disconnect battery negative cable. Unplug PCM
connector. Connect battery negative cable. Turn igni­
tion switch to ON. Install a jumper wire from cavity
54 of PCM connector (Fig. 21) to a good ground.
Lamp should light. Remove jumper from ground.
Lamp should go off. If OK, refer to Powertrain Diag­
nostic Procedures manual to diagnose PCM. If not
OK, turn ignition switch to OFF and go to next step.
(2) Disconnect battery negative cable. Remove in­
strument cluster bezel and cluster assembly. Install a
jumper wire from cavity 3 of cluster connector A
(white 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, re­
place bulb.
(3) Turn ignition switch to OFF. Disconnect battery
negative cable. Unplug cluster connector A. Check for
continuity between cavity 3 of cluster connector A
and a good ground. There should be no continuity. If
OK, go to next step. If not OK, repair short circuit as
required.