|
Abbrev |
Sensor |
Use |
Vehicle Explorer details |
| AIT |
Air
Inlet Temperature sensor |
Measures inlet air temperature for fuelling |
OBD - IAT:
Enhanced, IAT - shows temp and
IATV, volts and IATICNT
Fault filter count |
| BARO |
BAROmetric Pressure sensor |
Measures Baro air pressure for fuelling |
Enhanced: BARO shows pressure in Hg and output of
the sensor in Hz. |
| CANP |
CANister Purge valve |
Controls vacuum between engine inlet and EVAP canister |
|
| CMP |
CaMshaft Position sensor |
Detects
position of #1 cylinder for fuel and ignition coil synchronization |
Enhanced: shows CMPFM
failure mode Yes/No |
| CKP |
CranKshaft Position sensor |
Provides basic timing data for the PIP signal |
Enhanced: shows RPM
based on CKP input |
| DPFE |
Differential Pressure Feedback EGR transducer |
Measures EGR gas flow
into Inlet system |
Enhanced: - shows DPFEGR
volts |
| ECT |
Engine
Coolant Temp sensor |
Measures engine temperature |
OBD
- ECT: Enhanced:
shows ECT temp, ECTV
Volts and ECTFIL fault filter count |
| EGR |
Exhaust
Gas Recirculation |
Introduces exhaust gas into inlet system to reduce NOx |
Enhanced: Shows EGRVR
percentage engaged |
| EVAP |
Evaporative Emissions Control |
Prevents escape of fuel vapour to atmosphere |
Enhanced: EVAPCA shows fault detected Yes/No |
| EVR |
Electronic Vacuum Regulator and Egr Vacuum Regulator |
Controls vacuum pressure |
|
| FPM |
Fuel
Pump Monitor |
Monitors Fuel Pump high and low circuits |
Enhanced: shows FPM
monitor on/off |
| HO2S |
Heated
Oxygen Sensor |
Detects
exhaust rich or lean of oxygen |
In
OBD - HO2S . Enhanced:
shows all HO2S data and HTRX
heaters commanded on/off and retries if failed |
|
IAC |
Idle Air Control |
Air bypass valve on inlet system to control engine
idle |
Enhanced, IAC shows % engaged |
| ICM |
Ignition Control Module |
Whether
DIS, EDIS or TFI - module which controls ignition spark |
|
| IMRC |
Intake
Manifold Runner Control (formerly IAC Intake Air Control) |
Controls variable inlet systems (VIS) |
Enhanced: IMRC shows on/off |
| INJ |
INJector |
Valve
inject fuel into inlet, duration times commanded by the PCM |
Enhanced: FUELPW1(2) shows injector pulse width in Ms. |
| LOAD |
Current
load on engine |
Not a
sensor - computed figure from PCM for timing and fuelling |
OBD -
LOAD: Enhanced: LOAD shows computed engine
LOAD 0-200% |
| LOOP |
Current
Feedback Status |
Open is
cold fuelling, Closed is fuelling by HO2S and fuel trims |
Enhanced: LOOP shows OPEN or CLOSED |
| LTFT |
Long
Term Fuel Trim |
Fuelling based on computed adjustments over time to allow for ageing sensors |
OBD
- LTFT and Enhanced: LONGFT. |
| MAF |
Mass Air Flow sensor |
Measures air entering
Inlet system |
OBD
- MAF: shows Ibs/min flow and
Enhanced: MAFV shows volts |
| MPH |
Miles Per Hour |
Vehicle speed computed
from VSS signal |
OBD
- MPH: Enhanced: MPH |
| OCT ADJ |
Octane
Adjust |
Retards
Ignition timing for poor fuel |
Enhanced: OCT ADJ shows Open or Closed |
| PCM |
Powertrain Control Module |
The
EECV module controls Engine and in Automatics, the gearbox. OBD is programmed
into the software, |
|
| PIP |
Profile
Ignition Pickup signal |
Not a
sensor - a dataword signal to ignition system |
Enhanced: PIP shows On or Off (error is off) |
| PSP |
Power
Steering Pressure |
Detects
power steering load |
Enhanced: PSP shows Low/high |
| RPM |
Revs
per Minute |
RPM of the engine based on
CKP information |
OBD
- RPM
: Enhanced RPM |
| STFT |
Short
Term Fuel Trim |
Fuel
adjustment based on HO2S sensor input |
OBD RTFT:
and Enhanced: shows as SHRTFT |
| TPS |
Throttle Position Sensor |
Detects
location and speed of movement of accelerator |
OBD - TPS
shows % engaged. Enhanced: shows TPV, volts |
| WOT |
Wide
Open Throttle |
Not a
sensor, but a condition of the TPS. In WOT condition the A/C or C/C compressor
is disengaged and LOOP is open to provide a rich mixture |
|
| BOO |
Brake
On/Off |
Warns
PCM that brakes are applied |
Enhanced, BPP/BOO shows on/off |
| EPC |
Electronic Pressure Control |
Variable solenoid which controls line pressure in the auto transmission |
Enhanced: EPC pressure psi and
EPCV shows volts |
| GEAR |
Gear
currently engaged (auto) |
Not a sensor, PCM
computed, gear currently
engaged |
Enhanced: GEAR selected 1
to 4 |
| SS A
SS B
SS C
SS D |
Shift
Solenoids #1 to 4 |
Provide
pressure to force gear shifts, one for each gear |
Enhanced: SS1 to 4 solenoid controls on/off for
each |
| TCC |
Torque
Converter Clutch |
Locks
up Torque Converter to output shaft to provide direct drive to wheels |
Enhanced: TCC shows percentage engaged. |
| TFT |
Transmission Fluid Temp |
Auto
transmission fluid temperature |
|
| TR |
Transmission Range sensor |
Commonly called PRNGL - this provides input of the Gear Selector position |
|
| TSS |
Turbine
Speed Sensor |
Measures turbine speed to aid controlled slip |
Enhanced: TSS/ISS shows rpm |
| VSS |
Vehicle
Speed Sensor |
provides digital signal corresponding to vehicle speed |
OBD - MPH:
Enhanced:MPH and VSFIL
fault filter count |
| |
|
EricR |
|
