Symptom List:
LE F T F RON T WHE EL S PE ED S E N S OR S IGN AL
LE F T RE AR WHE EL S PEE D S E N S OR S IGN AL
RIGHT FRONT WHEEL SPEED SENSOR SIGNAL
RIGHT REAR WHEEL SPEED SENSOR SIGNAL
WHE E L S P E E D S E N S OR S IGN AL E RR OR
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 ti tle fo r t h e t e s t s w ill b e LE F T F R ON T WH EE L S PE ED
SENSOR SIGNAL.
Wh e n Mo n i to re d a n d S e t Co n d it i o n :
LE F T F R ON T WH EE L S PE E D S EN S OR S IGN AL
Wh en Mon it or ed: Ign it ion On - Con t inu ou sly
Set Con dit ion : Wh en th e va lu e of t h e wh eel speed sen sor sign al is missing at veh icle
speeds over 40 km/h (25 m ph ) OR du r in g a st a r t-u p t est wit h veh icle speeds over 12km /h
(8 m ph ) OR t h e veh icle is accelera t ed by 18 km /h (12 mph ) a fter a wh eel speed sen sor
sign al h as been lost .
POSSIBLE CAUSES
IN TE RMITTE NT WH EE L SP EE D SE N SOR SIGNAL DTC
DAMAGE D SE NSOR/CAB HARNE SS CONNE CTOR
DAMAGE D WH E EL SP E E D SE NSOR TONE WH E E L
EXCE SSIVE WHE E L SP EE D SE NSOR AIR GAP
DAMAGE D WH E EL BE ARIN G
DAMAGE D BRAKE LININGS/COMP ONE NTS
WH E EL SP E E D SE NSOR FAILURE
ANTI-LOCK BRAKE CONTROLLE R
TE S T ACTION AP PLICAB ILITY
1 NOTE: Refer to the symptom list and repair any WHEEL SPEED SENSOR
CIR CU IT D TCs b e fo re c o nt inu i n g .
Tur n th e ign it ion on .
Wit h t h e DRBIII" in Sen sor s, m on it or ALL th e Wheel Speed Sen sor sign a ls wh ile an
assist a n t dr ives t h e veh icle.
Slowly a cceler a t e from a st op t o 65 km /h (40 mph ).
NOTE: Wheel Speed should not vary by more than 10%from wheel to wheel
when driving in a straight line.
Do a n y of t h e Wh eel Speed Sen sor sign a ls va r y by gr ea t er th a n 10% wh ile dr ivin g in
astraightline?
All
Ye s → Go To 2
No → Go To 8
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BRAK ES (CAB)