Symptom:
CON TROL U NIT FAU LTY
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
CON TROL U N IT FAULTY
Wh en Mon it or ed: Du r ing h ea t er a ctiva t ion a nd oper at ion .
Set Condit ion : Th is DTC will set if t he h ea ter’s con tr ol u nit det ect s a n in t er na l fa ilur e in
it s m icr opr ocessor /m em ory.
POSSIBLE CAUSES
CABIN H EATE R OR HE ATE R BOOSTE R CONTROL UN IT
TE S T ACTION AP PLICAB ILITY
1 WA R N I N G : N E V E R O P E R AT E T H E H E AT E R I N A N E N C L O S E D A R E A
TH AT D OES N OT HAVE EXH AU S T VEN TILATION FACILITIES . A LWAYS
VEN T THE EXHAU S T WHE N OP ERATIN G THE HE ATER. F AILU R E TO
FOLLOW TH ES E IN S TRU CTIONS CAN RES U LT IN P E RS ON AL IN J U RY
OR D E ATH .
WA R N I N G : A L L O W T H E H E AT E R A S S E M B LY T O C O O L B E F O R E P E R -
FOR MIN G A COMP ON EN T INS P E CTION /RE PAIR /REP LACE MEN T. FAIL-
UR E TO F OLLOW THES E IN STR U CTION S CAN RE SU LT IN P E RS ON AL
IN JU RY OR D E ATH .
CAU TION : D O N OT P E R F ORM TH IS TE S T U N LES S D IRE CTE D H ER E B Y
TH E HEATER P RE -TES T. ALWAYS P ERF ORM THE HEATER P RE-TES T
P RIOR TO P ERF ORMING AN Y OTHER TES T F OR TH E R ES U LT TO BE
VAL I D .
Tur n th e ign it ion off.
Vie w r ep a ir
All
Repa ir
Repla ce t h e Ca bin H ea t er Assem bly or Hea t er Boost er Assem bly
in accor da n ce wit h t h e Ser vice In for m a t ion .
Per for m H E ATE R VERIF ICATION TE ST - VER 1.
77
CABI N H EAT ER
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