BASIC KNOWLEDGE REQUIRED (Cont.)

TM 9-2320-364-20-1

Section II. BASIC KNOWLEDGE REQUIRED (Cont.)

DDR

-- Diagnostic Data Reader: The hand held tool used for troubleshooting the DDEC system. MPSI PRO-LINK

9000.

ECM

-- Engine Control Module: The controller of the DDEC III system. It reads the engine and vehicle inputs, sensors

and switches, calculates injector firing time and duration, and fires injectors at appropriate times.

EERPOM -- Electrically Erasable Programmable Read Only Memory

PWM

-- Pulsewidth Modulated: Modulated signal provided by the DDEC system.

EFPA

-- Electronic Foot Pedal Assembly: Contains the Throttle Position Sensor.

EUI

-- Electronic Unit Injector

FTS

-- Fuel Temperature Sensor: Monitors fuel temperature.

GND

-- Ground

INJ

-- Injector (fuel)

LSG

-- Limiting Speed Governor

N/A

-- Not Applicable

OPS

-- Oil Pressure Sensor: Monitors oil pressure.

OTS

-- Oil Temperature Sensor: Monitors oil temperature.

-- Pulsewidth

SRS

-- Synchronous Reference Sensor: Detects when the first cylinder in the firing order is about to be fired.

TBS

-- Turbocharged Boost Sensor: Monitors Turbo boost.

TBD

-- To be determined.

-- Tachometer Driver: An output from the ECM for electronic tachometers and/or data loggers.

TPS

-- Throttle Position Sensor: Used to detect throttle request (a component of the EFPA). Also referred to as LSG.

TRS

-- Timing Reference Sensor: Used to detect whenever any cylinder is about to be fired.

VIN

-- Vehicle Identification Number

VSG

-- Variable Speed Governor.

VSS

-- Vehicle Speed Sensor: Used to detect vehicle speed.

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