GROUNDS
The EMIC r eceives and su pplies a ground pat h to
severa l switches a nd sen sor s through the following
hard wired circuits:
• Ambient Tem per atur e Se nsor Ret u r n
(Op t io na l)
• Fuel Level Sensor Return
• Gro und
Refer t o the appr opr iat e wiring inform ation for
additional details.
COMMUNICATION
The EMIC has provisions for t he following com mu-
nica tion cir cuit s:
• CAN D a t a B us - H ig h
• CAN D a t a B us - Lo w
• Diagnostic Serial Communication Interface
(S CI) D a t a B u s Li n e
Refer t o the appr opr iat e wiring inform ation for
additional details.
DIAGNOSIS AND TESTING - INSTRUMENT
CLUSTER
The hard wired in pu ts to and outpu ts from the
instr umen t cluster may be diagnosed an d tested
using conventional diagnostic tools and pr ocedures.
Refer to th e appropriate wiring infor mation. Th e wir-
ing information includes wirin g diagram s, proper
wire a nd connector repair procedu res, details of wire
harness routing and ret ention, connector pin-out
information and loca tion views for th e various wire
harness connectors, splices an d grounds.
If the instrument cluster is com pletely inopera tive,
be certain to check the fused B(+) circuit fuses and
wiring for the instru ment clust er. If t he clust er gen-
eral illum ination is inoper ative, be certain to check
the instrumen t lighting fuse a nd the input circuit to
the instrument cluster from the exterior lighting cir-
cuitry of the multi-fu nction switch on th e steerin g
column.
Conventional diagn ost ic methods may n ot prove
conclusive in th e dia gnosis of the instr umen t cluster.
In order to obt ain conclusive testing of th e instr u-
ment cluster, the Con troller Area Network (CAN)
da ta bu s networ k and all of the electronic modules
that pr ovide i n pu ts to or r eceive out pu ts from th e
instr umen t clu st er mu st also be checked. Th e most
reliable, efficient , and accur ate m eans to dia gnose
the instr umen t cluster, t he CAN da ta bus network,
and the electron ic modules t hat pr ovide inputs to or
receive output s from t he instrument cluster requir es
the use of a diagnostic scan tool and th e appropriat e
diagnostic inform ation. Th e diagnostic sca n tool can
pr ovide confirma tion th at the CAN data bus n etwork
is functiona l, that all of the modules a re sen ding an d
receivin g th e pr oper electron ic m essa ges over th e
CAN dat a bus, and t hat t he instr umen t clust er is
receivin g t he proper hard wired inputs and respond-
ing with the proper hard wired ou tputs needed to
perform its many function s.
WARNING: To avoid personal injury or death, on
vehicles equipped with airbags, disable the supple-
mental restraint system before attempting any
steering wheel, steering column, airbag, seat belt
tensioner, or instrument panel component diagno-
sis or service. Disconnect and isolate the battery
negative (ground) cable, then wait two minutes for
the system capacitor to discharge before perform-
ing further diagnosis or service. This is the only
sure way to disable the supplemental restraint sys-
tem. Failure to take the proper precautions could
result in accidental airbag deployment.
STAN DARD PROCEDU RE
CLUSTER PROGRAMMING
NOTE: After replacing the Instrument Cluster (IC)
according to the service procedures, determine the
optional equipment on the vehicle by accessing the
sales code information using the Vehicle Identifica-
tion Number (VIN) on DealerCONNECT.
(1) Usin g th e DRBIII!, select MI SCEL LANEO US
FUNCTIONS in t he Instrument Cluster (IC) section.
(2) Select MO D UL E SERVI CE REP L ACE-
ME NT .
(3) Following the pr ompts on the DRBIII!,enter
the correct para meters tha t ar e applicable t o th e
vehicle. Use the sales code information and visu al
inspection to obt ain the correct pa rameters.
CAUTION: Do not lock down the instrument cluster
until the following steps are followed or the instru-
ment cluster may be irreversibly damaged.
(4) After enterin g the proper pa ram eters int o the
IC, tur n th e ignition swit ch to the OFF position for
30 seconds, then tur n the ignition switch ON.
(5) Test drive th e veh icle for at least 10 m inutes
before pr oceeding.
(6) Check ALL modules for any par amet erization
DTCs. If any pa ramet erization DTCs a re presen t, one
or more parameters enter ed into the IC are in correct.
Verify all para meter s entered using th e sales code
information and visua l in spect ion of th e vehicle.
(7) If the para meters ent ered are verified as cor-
rect and para meterization DTCs are still present ,
refer to the a ppr opr iate diagnostic informat ion.
(8) If no parameter iza tion DTCs are present, lock
down the IC.
VA INSTRUMENT CLUSTER 8J - 7
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