Symptom List:
P 2242-AB S B RAKE MES SAGE P LAU S IB ILITY 1
P 2242-AB S B RAKE MES SAGE P LAU S IB ILITY 2
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 2242-AB S B RAKE MES S AGE
PLAUSIBILITY 1.
POSSIBLE CAUSES
CAB DTCS
CH E CKING BRAKE SWITCH IN P U T
CONTROLLE R ANTILOCK BRAKE MODULE
TCM DTCS
VERIF Y CAB COMMUNICATION
VERIF Y TCM COMMUN ICATION
TE S T ACTION AP PLICAB ILITY
1 NOTE:This DTC can be set if the vehicle operator depresses the brake pedal
and the accelerator at the same time (riding the brake pedal). Check with
vehicle operator for this type of driving behavior.
Tur n th e ign it ion on .
Wit h th e DRBIII" a t t em pt t o com m u n ica t e wit h t h e CAB.
NOTE: If there are other DTCs set with this DTC, refer to the Symptom List
and repair other stored ECM DTCs before diagnosing this DTC.
Is t h e CAB comm u n ica t ing wit h t h e DRB?
All
Ye s → Go To 2
No → Refer t o th e appr opr ia t e sym ptom in t h e Body Dia gn ost ic In for-
ma t ion.
Per for m BODY VERIFICATION TE ST - VE R 1.
2 Tur n th e ign it ion on .
Wit h th e DRBIII", r ea d t he CAB DTCs.
Are t h ere a n y CAB DTCs?
All
Ye s → Refer t o sym pt om list for pr oblem s r ela t ed to CAB.
Per for m BODY VERIFICATION TE ST - VE R 1.
No → Go To 3
3 Tur n th e ign it ion on .
Wit h th e DRBIII" a t t em pt t o com m u n ica t e wit h t h e TCM.
Is t h e TCM comm u n ica t in g wit h t h e DRB?
All
Ye s → Go To 4
No → Refer t o th e appr opr ia t e sym ptom in t h e Body Dia gn ost ic In for-
ma t ion.
Per for m BODY VERIFICATION TE ST - VE R 1.
192
DRI V EABI LI T Y - DI ESEL