TE S T ACTION AP PLICAB ILITY
4 Tur n th e ign it ion off.
Discon n ect t he DRBIII" from t h e DLC.
Discon n ect t he H ea t er Booster Modu le ha r n ess con n ect or.
Tur n th e ign it ion on .
Usin g a 12-volt t est ligh t conn ect ed t o gr ou n d, pr obe t h e K-IC, ATC, HBM, CH M
cir cu it .
NOTE: Th e t e s t lig h t m u s t illu m in a t e b rig h tly. Co m p are th e brig h tn e ss to
th a t of a dire c t co n n e cti o n to th e ba tte ry.
Does t h e test ligh t illu min a t e br igh t ly?
All
Ye s → Go To 5
No → Go To 6
5 Tur n th e ign it ion off.
Discon n ect t he H ea t er Booster Modu le ha r n ess con n ect or.
Tur n th e ign it ion on .
Usin g a 12-volt t est ligh t conn ect ed t o gr ou n d, pr obe t h e K-IC, ATC, HBM, CH M
cir cu it .
Wh ile m on it or in g th e test ligh t , disconn ect ea ch m odu le (IC, ATC, CH M) one at a
time.
NOTE: The vehicle may not be equipped with all the above modules.
NOTE: Th e t e s t lig h t m u s t illu m in a t e b rig h tly. Co m p are th e brig h tn e ss to
th a t of a dire c t co n n e cti o n to th e ba tte ry.
Does t h e test ligh t illu min a t e br igh t ly wit h a ll t h e above modules discon n ect ed?
All
Ye s → Repa ir t h e K-IC, ATC, H BM, CH M cir cu it for a sh or t to volt a ge.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Repla ce th e Modu le, th a t wh en discon nect ed t h e sh or t wa s
elim in a t ed, in accor da n ce wit h th e ser vice in for m a t ion .
Per for m BODY VERIFICATION TE ST - VE R 1.
6 Tur n th e ign it ion off.
Discon n ect t he H ea t er Booster Modu le ha r n ess con n ect or.
Discon n ect t he DRBIII" from t h e DLC.
Mea su r e t he r esist an ce of t h e K-IC, ATC, H BM, CHM circu it bet ween th e H BM
conn ect or a n d t he DLC.
Is t h e resista n ce below 5.0 ohm s?
All
Ye s → Repla ce th e Hea t er Boost er Modu le in a ccor da nce wit h t h e
Ser vice In for m a t ion .
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Repa ir th e K-IC, ATC, H BM, CH M cir cu it for an open .
Per for m BODY VERIFICATION TE ST - VE R 1.
115
COM M U N I CAT I ON
*NO RESP ON S E F ROM HEATER B OOS TER MOD ULE — Co n t in ued
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