Symptom List:
P 211 1-B OOS T P RES SU RE S ERVO MOTOR CIRCU IT S HORT TO
GR OU N D
P 2112-B OOS T P RESS U RE SERVO MOTOR CIRCU IT OP EN CIR-
CU IT
P 2510-B OOS T P RES S URE SERVO MOTOR S HORT TO GROU ND
P 2526-B OOS T P RES S URE SERVO MOTOR OP EN CIRCU IT
P 2526-B OOS T P RES S URE SERVO MOTOR S HORT TO GROU ND
Te s t N o t e : Al l s y m p t o m s l i s t e d a b o v e a r e d i a g n o s e d u s i n g t h e s a m e t e s t s .
Th e title fo r th e te sts w ill be P 2111-B OOS T P RESS U RE
SERVO MOTOR CIRCUIT SHORT TO GROUND.
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
P 2111-B OOS T P RE S S URE S ERVO MOTOR CIRCU IT S H ORT TO GROU N D
Wh en Mon it or ed: Wit h t h e ign it ion on .
Set Con dit ion : Th e E CM det ect s a sh ort t o ba t t er y on t h e Boost P ressu re Ser vo Mot or
Con tr ol cir cu it .
P 2112-B OOS T P RESS U RE S ERVO MOTOR CIRCU IT OP EN CIRCU IT
Wh en Mon it or ed: Wit h t h e ign it ion on .
Set Con dit ion : Th e ECM det ect s a n open or sh or t t o gr ou nd on t h e Boost P ressu re Ser vo
Mot or Con t r ol cir cuit .
POSSIBLE CAUSES
CH E CKIN G TH E E NGIN E CONTROL RE LAY S YSTE M
INTERMITTENT CONDITION
12 VOLT SUP P LY CIRCUIT OP E N
BOOST PRE SSU RE SE RVO MOTOR CON TROL CIRCUIT SH ORTED TO GROUN D
BOOST PRE SSU RE SE RVO MOTOR CON TROL CKT OPE N
BOOST PRE SSU RE SE RVO MOTOR
ENGINE CONTROL MODULE
167
DRI V EABI LI T Y - DI ESEL