Instrument Cluster Failure Message; Chime Service Diagnosis - Jeep Wrangler 2001 Service Manual

TJ
INSTRUMENT CLUSTER (Continued)
VFD Message
buS b0
buS b1
buS b8
PanEL OPEn
Airbag
(6) The actuator test is now completed. The instru-
ment cluster will automatically exit the self-diagnos-
tic mode and return to normal operation at the
completion of the test, if the ignition switch is turned
to the Off position during the test, or if a vehicle
speed message indicating that the vehicle is moving
is received from the PCM over the PCI data bus dur-
ing the test.
(7) Go back to Step 1 to repeat the test, if
required.

CHIME SERVICE DIAGNOSIS

Before performing this test, complete the testing of
each of the hard wired chime warning system
switches. Refer to the appropriate wiring informa-
tion. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
details of wire harness routing and retention, connec-
tor pin-out information and location views for the
various wire harness connectors, splices and grounds.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
2001 JEEP WRANGLER

INSTRUMENT CLUSTER FAILURE MESSAGE

Description
PCM - MIL Message
SKIM - SKIM Message
ACM - Airbag Message
Panel Sense - Open Circuit
Telltale Open/Shorted
INSTRUMENT CLUSTER
The cluster is not receiving a MIL lamp
message from the PCM. A DRBIII scan tool
is required for further diagnosis. Refer to the
appropriate diagnostic information.
The cluster is not receiving a SKIS lamp
message from the SKIM. A DRBIII scan tool
is required for further diagnosis. Refer to the
appropriate diagnostic information.
The cluster is not receiving an Airbag lamp
message from the ACM. A DRBIII scan tool
is required for further diagnosis. Refer to the
appropriate diagnostic information.
The cluster is not receiving an input from the
the panel lamps dimmer circuitry of the left
multi-function switch on the panel lamps
dimmer signal circuit. Repair the open circuit
or replace the faulty switch as required.
The EMIC airbag indicator is open or shorted.
Replace the faulty cluster.
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of this system. The most reli-
able, efficient, and accurate means to diagnose the
Chime Service function of the instrument cluster
requires the use of a DRBIII scan tool. Refer to the
appropriate diagnostic information.
(1) Disconnect and isolate the battery negative
cable. Remove the instrument cluster from the
instrument panel.
(2) Disconnect the cross body wire harness connec-
tor for the ignition switch from the switch connector
receptacle. Check for continuity between the key-in
switch sense circuit cavity of the instrument panel
wire harness connector (Connector C2) for the instru-
ment cluster and a good ground. There should be no
continuity. If OK, go to Step 3. If not OK, repair the
shorted key-in switch sense circuit as required.
(3) Check for continuity between the key-in switch
sense circuit cavities of the instrument panel wire
harness connector for the instrument cluster (Con-
nector C2) and the cross body wire harness connector
for the ignition switch. There should be continuity. If
OK, go to Step 4. If not OK, repair the open key-in
ignition switch sense circuit between the instrument
cluster and the ignition switch as required.
8Js - 9
Correction