Jeep Wrangler 1997 Manual page 391

TJ
DIAGNOSIS AND TESTING (Continued)
WARNING : ON VEHICLES EQUIPPED WITH AN AIR-
BAG, REFER TO GROUP 8M - PASSIVE RESTRAINT
SYSTEMS BEFORE ATTEMPTING STEERING
WHEEL
OR STEERING COLUMN COMPONENT
DIAGNOSIS OR SERVICE . FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Remove the steering column shrouds . Refer to
Group 8D - Ignition Systems for the procedures .
Unplug the key-in ignition switch connector from the
ignition switch.
(2) Check for continuity between the left front
door jamb switch sense circuit cavity of the con-
nector and a good ground . There should be continuity
with the driver door open, and no continuity with the
driver door closed . If OK, go to Step 3 . If not OK,
repair the circuit to the driver door jamb switch as
required .
(3) Check for continuity between the key-in
switch sense circuit and the left front door jamb
switch sense circuit terminals on the key-in ignition
switch . There should be continuity with the key in
the ignition lock cylinder, and no continuity with the
key removed. If OK, see the diagnosis for Instrument
Cluster in this group. If not OK, replace the faulty
ignition switch .
HEADLAMP 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 GROUP 8M - PASSIVE
RESTRAINT
SYSTEMS
BEFORE ATTEMPTING
STEERING WHEEL, STEERING COLUMN, 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) Unplug the headlamp switch connector . Check
for continuity between the left front door jamb
switch sense circuit cavity of the headlamp switch
connector and a good ground . There should be conti-
nuity with the driver door closed, and no continuity
with the driver door open. If OK, go to Step 2 . If not
OK, repair the circuit to the driver door jamb switch
as required .
(2) Check for continuity between the key-in
switch sense circuit terminal and the left front
door jamb switch sense terminal of the headlamp
switch. There should be continuity with the head-
lamp switch turned on, and no continuity with the
CHIME/BUZZER WARNING SYSTEMS
81.1 - 3
headlamp switch turned off. If OK, see the diagnosis
for Instrument Panel in this group . If not OK,
replace the faulty headlamp switch .
INSTRUMENT CLUSTER
Before performing this test, complete the testing of
the hard-wired chime warning system switches as
described in this group . For circuit descriptions and
diagrams, refer to 8W-40 - Instrument Cluster or
8W-44 - Interior Lighting in Group 8W - Wiring Dia-
grams.
WARNING : ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP
8M
- PASSIVE
RESTRAINT
SYSTEMS BEFORE ATTEMPTING
STEERING
WHEEL, STEERING COLUMN, 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) Disconnect and isolate the battery negative
cable. Remove the instrument cluster from the
instrument panel . Refer to Group 8E - Instrument
Panel Systems for the procedures.
(2) Unplug the headlamp switch and key-in igni-
tion switch connectors . Check for continuity between
the key-in switch sense circuit cavity of the right
(gray) instrument cluster connector and a good
ground. There should be no continuity. If OK, go to
Step 3. If not OK, repair the short circuit as
required .
(3) Check for continuity between the key-in
switch sense circuit cavities of the right (gray)
instrument cluster connector and the headlamp
switch connector. There should be continuity. If OK,
go to Step 4 . If not OK, repair the open circuit as
required .
(4) Unplug the driver seat belt switch connector.
Check for continuity between the seat belt switch
sense circuit cavity of the right (gray) instrument
cluster connector and a good ground. There should be
no continuity. If OK, go to Step 5 . If not OK, repair
the short circuit as required .
(5) Check for continuity between the seat belt
switch sense circuit cavities of the right (gray)
instrument cluster connector and the driver seat belt
switch connector. There should be continuity. If OK,
replace the faulty instrument cluster . If not OK,
repair the open circuit as required .