Symptom:
*NO RESP ON S E F ROM S ECURITY S YS TEM MOD U LE
POSSIBLE CAUSES
CH E CK P OWERS AND GROUN DS TO THE SE CU RITY SYSTE M MODULE
CE NTRAL TIME R MODULE
K-CTM, SSM CIRCUIT SH ORTE D TO GROUND
CE NTRAL TIME R MODULE
K-CTM, SSM CIRCUIT SH ORTE D TO VOLTAGE
K-CTM, SSM CIRCUIT OP E N
SECURITY SYSTEM MODULE
TE S T ACTION AP PLICAB ILITY
1 Tur n th e ign it ion off.
Discon n ect t he Secu r it y Syst em Modu le ha r n ess con n ect or s.
Ch eck ea ch power a n d gr ou n d cir cu it to th e modu le.
Wer e an y pr oblem s fou n d?
All
Ye s → Refer to th e wir in g dia gr a m s loca t ed in t h e ser vice in for m a t ion t o
help isola t e an open or sh or t ed con dit ion . Repa ir as n ecessa r y.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Go To 2
2 Tur n th e ign it ion off.
Discon n ect t he SSM ha r n ess conn ect or s.
Discon n ect t he DRBIII" from t h e DLC.
Mea su r e th e resista n ce between gr ou n d a n d t h e K-CTM, SSM cir cu it .
Is t h e resista n ce below 5.0 ohm s?
All
Ye s → Go To 3
No → Go To 4
3 Tur n th e ign it ion off.
Discon n ect t he Cen t ra l Tim er Modu le h a r n ess con nect or.
Mea su r e th e resista n ce between gr ou n d a n d t h e K-CTM, SSM cir cu it .
Is t h e resista n ce below 5.0 ohm s?
All
Ye s → Repa ir t h e K-CTM, SSM cir cu it for a sh or t to grou n d.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Repla ce t h e Cent r a l Tim er Modu le in accor da n ce wit h t h e service
in for m a t ion .
Per for m BODY VERIFICATION TE ST - VE R 1.
120
COM M U N I CAT I ON
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