User Manual

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User guide
| HDS 200/HDS 250
HD Scan Tool for Class 4-8 Diesel, Light and Medium Vehicles
581618 | REV. B | 11.2018
Bosch Automotive Service Solutions Inc.
An input signal to the PCM indicating that the brake
pedal is being pressed. This signal is typically used to
disengage cruise control systems and torque converter
clutch (TCC) solenoids. See also TCC.
Cal:
Calibration
Calc:
Calculated
CAM:
Camshaft position sensor. Sends a frequency signal to
the PCM to synchronize fuel injector and spark plug
firing.
Catalytic converter:
Designed to reduce exhaust emissions.
CAN:
Controller area network
CARB:
California air resources board. Governing body for emis-
sions control in California.
CC:
Cruise control
Cfg:
Configuration
Chnl:
Channel
Circ:
Circuit
CKP REF:
Crankshaft position reference.
CKP:
Crankshaft position. See CPS.
CKT:
Circuit
Clnt:
Coolant
Closed loop (CL):
A feedback system that uses the O2 Sensor(s) to moni-
tor the results of combustion. Based on the signal(s)
from the O2 sensor(s), the PCM modifies the air/fuel
mixture to maintain optimum performance with lowest
emissions. In closed loop mode, the PCM can fine tune
control of a system to achieve an exact result.
Cmd:
Command
Cmn:
Common
CMP:
Camshaft position sensor
CO:
Carbon monoxide; odorless gas produced by incomplete
combustion.
Code scanner:
A device that interfaces with and communicates informa-
tion via a data link.
Cont:
Continuous
Continuous memory codes:
See pending codes.
CPS:
Crankshaft position sensor. Sends a frequency signal to
the PCM. It is used to reference fuel injector operation
and synchronize spark plug firing on distributorless
ignition systems (DIS).
Ctrl:
Control
CTS:
Coolant temperature sensor. A resistance sensor that
sends a voltage signal to the PCM indicating the tem-
perature of the coolant. This signal tells the PCM
whether the engine is cold or warm.
CVRTD:
Continuous variable real time damping
Cyl:
Cylinder
D/R:
Drive/reverse
Data Link Connector (DLC):
Connector providing access and/or control of the vehicle
information, operating conditions, and diagnostic infor-
mation. Vehicles with OBD II use a 16-pin connector
located in the passenger compartment.
Data stream:
The actual data communications sent from the vehicle’s
PCM to the data connector.
Decel:
Deceleration
Dem:
Demand
DEPS:
Digital engine position sensor.
Des:
Desired
Detonation:
See knock.
Dev:
Deviation
DI/DIS:
Direct Ignition/Distributorless Ignition System. A system
that produces the ignition spark without the use of a
distributor.
Diff:
Differential
Dist:
Distance
DP:
Particulate
DPF:
Diesel particulate filter
DPFE:
Differential pressure feedback-exhaust gas recirculation
sensor
Drvr:
Driver
DTC: