Dodge 2000 DURANGO Service Manual page 491

DN
DESCRIPTION AND OPERATION (Continued)
The driver seat belt switch cannot be repaired and,
if faulty or damaged, the entire driver seat belt and
retractor unit must be replaced. Refer to Group 23 -
Body for the service procedures.
DIAGNOSIS AND TESTING
CENTRAL TIMER MODULE
Before testing the Central Timer Module (CTM) for
an inoperative chime function, be sure to test the
hard-wired switch and instrument cluster chime
request circuits as described in this group. For circuit
descriptions and diagrams, refer to 8W-45 - Central
Timer Module in Group 8W - Wiring Diagrams.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of the high-line version of the
Central Timer Module (CTM). The most reliable, effi-
cient, and accurate means to diagnose the high-line
CTM requires the use of a DRB scan tool and the
proper Diagnostic Procedures manual.
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) Check the fuses in the junction block. If OK, go
to Step 2. If not OK, repair the shorted circuit or
component as required and replace the faulty fuse.
(2) Check for battery voltage at the fuse in the
junction block. If OK, go to Step 3. If not OK, repair
the open circuit to the Power Distribution Center
(PDC) as required.
(3) Disconnect and isolate the battery negative
cable. Remove the CTM from its mounting bracket to
access the CTM wire harness connectors. Refer to
Central Timer Module in the Removal and Installa-
tion section of Group 8E - Instrument Panel Systems
for the procedures.
(4) Unplug the wire harness connectors from the
CTM. Check the wire harness connectors and the
receptacles in the module for loose, corroded, or dam-
aged terminals and pins. If OK, go to Step 5. If not
OK, repair as required.
(5) Probe the ground circuit cavity of the 14-way
CTM wire harness connector and check for continuity
to a good ground. On the high-line version of the
CTM, repeat the check between the ground circuit
cavity of the 18-way CTM wire harness connector
GROUP 8M - PASSIVE
STEERING COLUMN,
CHIME/BUZZER WARNING SYSTEMS
and a good ground. In each case, there should be con-
tinuity. If OK, go to Step 6. If not OK, repair the
open circuit(s) to ground as required.
(6) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
14-way CTM wire harness connector. If OK, go to
Step 7. If not OK, repair the open circuit to the junc-
tion block as required.
(7) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run/start) circuit cavity of the 14-way CTM
wire harness connector. On the high-line version of
the CTM, repeat the check at the fused ignition
switch output (run/accessory) circuit cavity of the
18-way CTM wire harness connector. If OK, replace
the faulty CTM. If not OK, repair the open circuit
from the CTM to the junction block as required.
DRIVER DOOR AJAR SWITCH
For circuit descriptions and diagrams, refer to
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,
OR
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) Rotate the headlamp switch knob counterclock-
wise to ensure that the dome lamps are not switched
off. Open the driver door and note whether the inte-
rior lamps light. They should light. If OK, see Key-In
Ignition Switch and/or Headlamp Switch in the Diag-
nosis and Testing section of this group. If not OK, go
to Step 2.
(2) Disconnect and isolate the battery negative
cable. Unplug the driver door latch wire harness con-
nector. Check for continuity between the ground cir-
cuit cavity in the body half of the driver door latch
wire harness connector and a good ground. There
should be continuity. If OK, go to Step 3. If not OK,
repair the circuit to ground as required.
(3) Check for continuity between the driver door
ajar switch ground circuit terminal and the driver
door ajar switch sense circuit terminal of the driver
door latch wire harness connector. There should be
continuity with the driver door open, and no continu-
ity with the driver door closed. If OK, go to Step 4. If
not OK, replace the faulty latch.
(4) Remove the Central Timer Module (CTM) from
its mounting bracket to access the CTM wire harness
connectors. Refer to Central Timer Module in the
TO GROUP 8M -
STEERING COLUMN,
8U - 3
PASSIVE
OR