Chrysler RAM TRUCK 2500 1994 Service Manual page 411

8E - 14 INSTRUMENT PANEL AND GAUGES
•
(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 #6. 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 #6 to powertrain control module
(PCM) connector, cavity #32. I f not OK, repair circuit
as required. I f OK, refer to Powertrain Diagnostic
Test Procedures manual for diagnosis of PCM.
AIRBAG
(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) Check for battery voltage between bulb B+ and
ground terminals within 6 seconds after turning igni­
tion switch to ON position. 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 A (white), cavity #9. 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 A
(white), cavity #9 to airbag control module (ACM)
connector 1 (13 way), cavity #7. I f not OK, repair cir­
cuit as required. I f OK, refer to Group 8M - Restraint
System for diagnosis of ACM.
SEAT BELT
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) Check for battery voltage between bulb B+ and
ground terminals within 4 seconds after turning igni­
tion switch to ON position. 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 A (white), cavity #1. 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 A
(white), cavity #1 to terminal #57 of buzzer i n fuse-
block module. I f not OK, repair circuit as required. I f
OK, refer to Group 8U - Chime/Buzzer Warning Sys­
tem for diagnosis of buzzer.
MAINTENANCE REQUIRED (EMISSIONS
MAINTENANCE HDC 5.9L ¥8 & 8 . 0 L V10)
The maintenance required lamp is controlled
b y the PCM.
(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) Disconnect black 60-way connector at PCM,
and install a jumper wire from cavity #56 to a good
ground. Turn ignition switch to ON position and
check for battery voltage between bulb B+ and
ground terminals.If OK, replace bulb. I f not OK, con­
tinue 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 #5. 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 #5 to cavity #56 of PCM 60-way con-