Dodge 2000 DURANGO Service Manual page 493

DN
DIAGNOSIS AND TESTING (Continued)
(4) Check for continuity between the driver door
ajar switch sense circuit terminal and the key-in
ignition switch sense circuit terminal of the head-
lamp switch. There should be no continuity with the
switch in the Off position, and continuity with the
switch in the park or head lamps On position. If OK,
see Central Timer Module in the Diagnosis and Test-
ing section of this group. If not OK, replace the
faulty headlamp switch.
DRIVER SEAT BELT SWITCH
For circuit descriptions and diagrams, refer to
8W-40 - Instrument Cluster or 8W-44 - Interior
Lighting in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable. Unplug the wire harness connector from the
driver seat belt retractor. Check for continuity
between the circuit cavity in the body half of the
driver seat belt switch wire harness connector and a
good ground. There should be continuity. If OK, go to
Step 2. If not OK, repair the open circuit as required.
(2) Check for continuity between the two cavities
in the seat belt half of the driver seat belt switch
wire harness connector. There should be no continu-
ity with the seat belt webbing retracted, and continu-
ity with the seat belt webbing pulled out of the
retractor far enough to engage the seat belt buckle. If
OK, go to Step 3. If not OK, replace the faulty driver
side seat belt and retractor assembly.
(3) Remove the instrument cluster from the instru-
ment panel. Check for continuity between the seat
belt switch sense circuit cavities of the instrument
cluster wire harness connector (connector B) and the
body half of the driver seat belt switch wire harness
connector. There should be continuity. If OK, see
Instrument Cluster in the Diagnosis and Testing sec-
tion of this group for diagnosis of the chime request
circuit. If not OK, repair the open circuit as required.
INSTRUMENT CLUSTER
Before performing this test, see Driver Seat Belt
Switch in the Diagnosis and Testing section of this
group, and Instrument Cluster in the Diagnosis and
Testing section of Group 8E - Instrument Panel Sys-
tems. For circuit descriptions and diagrams, refer to
GROUP 8M - PASSIVE
STEERING COLUMN,
CHIME/BUZZER WARNING SYSTEMS
8W-40 - Instrument Cluster or 8W-45 - Central
Timer Module in Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL,
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable. Remove the instrument cluster from the
instrument panel. Refer to Instrument Cluster in the
Removal and Installation section of Group 8E -
Instrument Panel Systems for the procedures.
(2) Remove the Central Timer Module (CTM) from
OR
its mounting bracket to access the CTM wire harness
connectors. Refer to Central Timer Module in the
Removal and Installation section of Group 8E -
Instrument Panel
Unplug the 14-way CTM wire harness connector.
(3) Check for continuity between the chime request
circuit cavity of the 14-way CTM wire harness con-
nector and a good ground. There should be no conti-
nuity. If OK, go to Step 4. If not OK, repair the short
circuit as required.
(4) Check for continuity between the chime request
circuit cavities of the 14-way CTM wire harness con-
nector and the instrument cluster wire harness con-
nector (connector B). There should be continuity. If
OK, test the CTM as described in this group. If not
OK, repair the open circuit as required.
REMOVAL AND INSTALLATION
CHIME WARNING SYSTEM SWITCHES
Service procedures for the various hard-wired
switches used in the chime warning system can be
found in the Removal and Installation section of the
proper group, as follows:
• Driver door ajar switch - refer to Group 23 -
Body for the door latch service procedures
• Driver seat belt switch - refer to Group 23 -
Body for the seat belt retractor service procedures
• Headlamp switch - refer to Headlamp Switch in
the Removal and Installation section of Group 8E -
Instrument Panel Systems
• Key-in ignition switch - refer to Group 8D - Igni-
tion Systems
procedures.
TO GROUP 8M
STEERING COLUMN,
Systems for the
for the ignition switch
8U - 5
- PASSIVE
OR
procedures.
service