Specifications

Symptom List:
P2333-S/C VEHICLE SPEED PLAUSIBILITY
P2338-S/C EXCESSIVE ACCELERATION
P2338-S/C EXCESSIVE DECELERATION
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2333-S/C VEHICLE SPEED
PLAUSIBILITY.
POSSIBLE CAUSES
BRAKE SWITCH VERIFICATION
CAB DTCS
OPEN CAN BUS CIRCUITS
VERIFY CAB COMMUNICATION
WHEEL SPEED VERIFICATION
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
With the DRBIIIt, erase ECM DTCs.
Test drive the vehicle and attempt to duplicate the problem.
With the DRB, read ECM DTC’s.
Did this DTC set again?
All
Yes → Go To 2
No → Go To 7
2 Turn the ignition on.
With the DRBIIIt attempt to communicate with the 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 the CAB communicating with the DRB?
All
Yes → Go To 3
No → Refer to the appropriate symptom in the Body Diagnostic Infor-
mation.
Perform ROAD TEST VERIFICATION - VER-2.
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DRIVEABILITY - DIESEL