Symptom:
AMB IEN T TEMP S ENS OR OP EN/S HORT TO BATTERY
POSSIBLE CAUSES
AMBIE NT TE MP ERATURE SE NSOR SIGNAL (+) CIRCUIT SH ORT TO VOLTAGE
AMBIE NT TE MP ERATURE SE NSOR
AMBIE NT TE MP ERATURE SE NSOR SIGNAL RE TU RN CIRCUIT OP E N
AMBIE NT TE MP ERATURE SE NSOR SIGNAL (+) CIRCUIT OP E N
INSTRUMENT CLUSTER
TE S T ACTION AP PLICAB ILITY
1 Tur n th e ign it ion off.
Discon n ect t he Ambient Tem per a t u r e Sensor h a r n ess con n ect or.
Discon n ect t he In st r u m en t Clu st er C1 ha r n ess conn ect or.
Mea su r e th e volt a ge bet ween t h e Am bien t Temper a t u r e Sen sor Sign a l (+) cir cu it a n d
gr ou n d.
Is t h e volt a ge above 0.2 volt s?
All
Ye s → Repa ir t h e Am bient Tem per a t u r e Sen sor Sign a l (+) cir cu it for a
sh or t to volt a ge.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Go To 2
2 Discon n ect t he Ambient Tem per a t u r e Sensor h a r n ess con n ect or.
Con n ect a ju m per wir e between t h e Am bien t Temper a t u r e Sen sor Sign a l (+) an d
Ambient Tem per a t u r e Sen sor Sign a l Ret u r n cir cu it.
Tur n th e ign it ion on , wit h th e DRBIII",readDTCs.
Does t h e DRBIII" displa y Am bien t Tem per a t u r e Sen sor Sh or t t o Gr ou n d?
All
Ye s → Repla ce th e Ambien t Temper a t u r e Sen sor.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Go To 3
3 Tur n th e ign it ion off.
Discon n ect t he Ambient Tem per a t u r e Sensor h a r n ess con n ect or.
Discon n ect t he In st r u m en t Clu st er C1 ha r n ess conn ect or.
Mea su r e t h e r esista n ce of t h e Ambien t Temper a t u r e Sen sor Sign a l Ret ur n cir cu it
bet ween th e In st r u m en t Clu st er C1 h a r n ess con n ect or an d th e Ambien t Tem per a t u r e
Sen sor ha r n ess con n ect or.
Is t h e resista n ce a bove 10 ohm s?
All
Ye s → Repa ir t h e Am bien t Tem per a t u r e Sen sor Sign a l Ret u r n circu it for
an open.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Go To 4
179
INSTRUMENT CLUSTER
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