NOTE: The practice of exchanging (swapping) instrument clusters and other electronic modules in this vehi-
cle with those removed from another vehicle must always be avoided. If the instrument cluster has been
replaced, certain indicators in this instrument cluster will be automatically configured when the cluster is
connected to the electrical system of the vehicle. This feature allows those indicators to be activated for
compatibility with certain optional equipment. Some other indicators may require manual intervention to
obtain proper configuration for the equipment in the specific vehicle. If the problem being diagnosed
involves erroneous illumination of the ABS indicator, the airbag indicator, the Electronic Throttle Control
(ETC) indicator, the Part Time indicator, the Full Time indicator or the Tire Pressure Monitor indicator when
the vehicle does not have the appropriate equipment, a diagnostic scan tool must be used to manually
enable or disable the correct indicator(s). Refer to the appropriate diagnostic information.
The instrument cluster actuator test will put the instrument cluster into its self-diagnostic mode. In this mode the
instrument cluster can perform a self-diagnostic test that will confirm that the instrument cluster circuitry, the gauges,
the PCI data bus message controlled indicators, and the chime tone transducer are capable of operating as
designed. During the actuator test the instrument cluster circuitry will sound the audible tone transducer, position
each of the gauge needles at various calibration points, illuminate each of the segments in the Vacuum-Fluorescent
Display (VFD) unit, and turn all of the PCI data bus message-controlled indicators on and off again.
Successful completion of the actuator test will confirm that the instrument cluster is operational. However, there may
still be a problem with the PCI data bus, the Powertrain Control Module (PCM), the Airbag Control Module (ACM),
the Body Control Module (BCM), the Electronic Vehicle Information Center (EVIC), the Sentry Key REmote Entry
Module (SKREEM), or the inputs to one of these electronic control modules. Use a diagnostic scan tool to diagnose
these components. Refer to the appropriate diagnostic information.
1. Begin the test with the ignition switch in the Off position.
2. Depress the odometer/trip odometer switch button.
3. While still holding the odometer/trip odometer switch button depressed, turn the ignition switch to the On position,
but do not start the engine.
4. Release the odometer/trip odometer switch button.
5. The instrument cluster will automatically begin the actuator test sequence, as follows:
a. The cluster will turn on, then off again each of the PCI data bus message controlled indicators to confirm the
functionality of the indicator and the cluster control circuitry:
b. The cluster will sweep the needles for each of the gauges to several calibration points in sequence to con-
firm the functionality of the gauge and the cluster control circuitry:
c. The cluster will sequentially step the odometer/trip odometer VFD unit display from all ones (111111) through
all nines (999999) to confirm the functionality of all VFD unit segments and their control circuitry, then display
the software version number.
d. The cluster will generate five (5) chime tones to confirm the functionality of the audible tone transducer and
the control circuitry.
6. The actuator test is now completed. The instrument cluster will automatically exit the self-diagnostic 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 an engine rpm message indicating that the engine is running is received from the PCM over the
PCI data bus during the test.
7. Go back to Step 1 to repeat the test, if required.
CLUSTER ILLUMINATION DIAGNOSIS
WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental
restraint system before attempting any steering wheel, steering column, airbag, occupant classification sys-
tem, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect
and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge
before performing further diagnosis or service. This is the only sure way to disable the supplemental
restraint system. Failure to take the proper precautions could result in accidental airbag deployment.
If the problem being diagnosed is a single inoperative illumination lamp, be certain that the bulb and bulb holder unit
are properly installed in the instrument cluster electronic circuit board. If no installation problems are found, replace
the faulty bulb and bulb holder unit. If all of the cluster illumination lamps are inoperative, the most reliable, efficient,
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INSTRUMENT CLUSTER
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