TE S T ACTION AP PLICAB ILITY
4 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 .
Recon n ect t h e Ca bin Hea t er or Hea t er Boost er h a r n ess con n ect or.
Con n ect a su it a ble volt m et er t o t h e veh icle’s ba t t er y. P osit ion th e volt m et er wher e it
can be mon it or ed wh ile oper a t in g t h e DRBIII".
Tur n th e ign it ion on .
Set t h e blen d con t r ol t o th e m a x h ea t posit ion a n d t he m ode cont r ol t o th e floor
posit ion .
Star t t he engine.
Allow th e engin e to idle.
NOTE: Do not disconnect the vehicle’s battery or the heater’s main power
su p p ly w hi le th e h e at e r is i n o p e ra tio n or i n ru n -d o w n m o d e . Fa i lu re to
fo ll o w t h e s e i n s t ru c t i o n s c a n r e s u l t i n e x c es s e mi s s io ns fr o m t h e hea t e r
during heater operation.
Swit ch t h e Ca bin H ea t er or H ea t er Boost er on . If necessar y, allow t h e hea t er t o ru n
th r ou gh a t lea st one cycle of oper a tion (a ppr oxim a t ely 10 min u t es), a n d th en t u r n th e
hea t er off.
Wit h t h e DRBIII" in Sen sor s, m on it or t h e volt met er an d th e Ca bin H ea t er ’s or
Hea t er Boost er ’s Oper a tin g Volt a ge while th e hea t er is opera t ion al.
Swit ch t h e hea t er off.
Tur n th e en gin e off.
Wa s t h ere m or e th a n 1.5 volt s differ en ce bet ween Oper a t in g & ba t t er y volt a ge?
All
Ye s → Repa ir t h e h igh resist a n ce in th e Fu sed B+ cir cu it.
Per for m H E ATE R VERIF ICATION TE ST - VER 1.
No → Repla ce t h e Ca bin Hea t er Assem bly or H ea 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.
101
CABI N H EAT ER
UN D ER VOLTAGE — Co n t i n u ed
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