Instruction sheet

IS-17910

MESSAGE CENTER DISPLAY (MCD) REPLACEMENT
Effectivity: all vehicles with digital cluster.

MATERIEL
Kit #IS17910 includes the following parts:
Part No.

Description

Qty

19519274
IS-17910

MESSAGE CENTER DISPLAY (CURCUIT BOARD)
INSTRUCTION SHEET

1
1

FI-17910

FEUILLE D'INSTRUCTIONS

1

NOTE
Material can be obtained through regular channels.

PROCEDURE

DANGER
Park vehicle safely, apply parking brake, stop the engine. Prior to working on the vehicle, set the
ignition switch to the OFF position and trip the main circuit breakers equipped with a trip button. On
Commuter type vehicles, set the battery master switch (master cut-out) to the OFF position.

General Work Practices
Note: Individual gages or modules in the H3/XL2 instrument cluster are not serviceable during the
warranty period. Attempts to service or replace individual modules or gages during the warranty
period will void the cluster warranty.

Caution: To prevent electrostatic discharge (ESD), which may damage the sensitive electronic
components in the instrument cluster, make sure the workbench has an anti-static mat which is grounded
to the nearest electrical outlet when working on the instrument cluster. Failure to use an anti-static mat
may result in permanent damage to the printed circuit boards in the instrument cluster. When working at
the anti-static workbench, always keep a wrist strap connected to the anti-static mat.
When dealing with circuits designed to sense differences smaller than 1 volt, electrostatic discharge can
be a subtle but destructive problem. Circuit boards mounted in the instrument cluster or in modules
mounted elsewhere may not fall immediately after being hit with a static discharge. Rather they may work
for a while, then fall for no apparent reason. The culprit then is often the normal warming up and cooling
down the process of the module, engine or cab interior.

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Grounding straps and anti-static mats are available for minimal cost from electronic supply stores.
Grounding straps consists of a wrist strap, a coiled extension wire and an alligator clip. Be sure to
purchase one with a long enough extension wire to allow freedom of movement.

FIGURE 1: SPECIAL EQUIPMENT

Instrument Cluster Removal
1. Remove the air from the air tank by applying the brakes repeatedly.
2. Remove the dashboard cover.
3. Disconnect the instrument cluster cabling.
4. Disconnect the 3 air hoses.
5. Remove the nuts fixing the instrument cluster to the dashboard housing (figure 2).
6. Remove the instrument cluster.

instrument cluster nuts /
écrous du panneau des instruments
FIGURE 2: DASHBOARD COMPONENTS

7. Place the instrument cluster on a static mat for repairs. A static bracelet must be worn for all bench
repairs.

Caution: When servicing or troubleshooting, do not leave the cluster face-down for more than 15
minutes, or damage to the gages may occur. Gage oil can run out the front of the gage faces and make
the gages inaccurate.

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STEP NO 1

STEP NO 2
USE A TORX SCREWDRIVER NO. T18 AND
UNFASTEN SCREWS (2) SUPPORTING THE
DISPLAY TO THE PC BOARD.

REMOVE THE FAILED DISPLAY AND INSTALL
THE NEW ONE.

SECURE THE NEW DISPLAY ON THE PC
BOARD WITH 2 SCREWS.

STEP NO 3

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STEP NO 4

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TURN THE PC BOARD AND FASTEN 2 SCREWS
TO SECURE IN PLACE.

STEP NO 5

STEP NO 6

INSTALL THE PLASTIC COVER AND FASTEN
WITH 3 SCREWS.

STEP NO 7
Instrument Cluster Installation
1. Reinstall the instrument cluster into the dashboard housing.
2. Insert the lower part of Pollak instrument cluster into the housing. Exert a pressure on the lower part
of the instrument cluster to avoid jamming the instrument cluster glass pane. Rest the leaf spring
against the supports.

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Note : The instrument panel supports may be lowered from 1 mm to 2 mm maximum if, after tightening,
the pane does not clear the housing (figure 3).
3. Bring back the top of the instrument cluster, insert the screws and tighten the nuts until the instrument
cluster rests against the housing (figure 3).
4. Reconnect the 3 air hoses.

Instrum ent panel lens /
Lentille du panneau
des instrum ents

Suffic ient tightening /
Serrage suffisant

FIGURE 3

5. Reconnect the instrument cluster cabling.
6. Reinstall the dashboard cover.

PARTS / WASTE DISPOSAL
Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)

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