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CS
DOOR MODULE (Continued)
INSTALLATION
(1) Position the door module onto the front door
trim panel.
(2) Install the door module to the back of the front
door trim panel. Tighten the screws to 2.2 N·m (20
in. lbs.).
(3) Install the trim panel onto the front door
(Refer to 23 - BODY/DOOR - FRONT/TRIM PANEL -
INSTALLATION).
(4) Connect the battery negative cable.
POWERTRAIN CONTROL
MODULE
DESCRIPTION
DESCRIPTION
The Powertrain Control Module (PCM) is a digital
computer containing a microprocessor (Fig. 8). The
PCM receives input signals from various switches
and sensors referred to as Powertrain Control Mod-
ule Inputs. Based on these inputs, the PCM adjusts
various engine and vehicle operations through
devices referred to as Powertrain Control Module
Outputs.
Fig. 8 PCM LOCATION
NOTE: PCM Inputs:
• Air Conditioning Pressure Transducer
• Ambient temperature Sensor
• ASD Relay
ELECTRONIC CONTROL MODULES 8E - 7
• Battery Temperature Sensor (NGC)
• Battery Voltage
• Brake Switch
• Camshaft Position Sensor
• Crankshaft Position Sensor
• EGR Position Feedback
• Engine Coolant Temperature Sensor
• Heated Oxygen Sensors
• Ignition sense
• Intake Air Temperature Sensor
• Knock Sensor
• NVLD Assembly
• Manifold Absolute Pressure (MAP) Sensor
• Park/Neutral
• PCI Bus
• Power Steering Pressure Switch
• EVAP Purge Return
• SCI Receive
• Speed Control
• Throttle Position Sensor
• Transmission Control Relay (Switched B+)
• Transmission Pressure Switches
• Transmission Temperature Sensor
• Transmission Input Shaft Speed Sensor
• Transmission Output Shaft Speed Sensor
• Transaxle Gear Engagement
• Vehicle Speed
NOTE: PCM Outputs:
• Air Conditioning Clutch Relay
• Automatic Shut Down (ASD) and Fuel Pump
Relays
• Data Link Connector (PCI and SCI Transmit)
• Double Start Override
• EGR Solenoid
• Fuel Injectors
• Generator Field
• High Speed Fan Relay
• Idle Air Control Motor
• Ignition Coils
• NVLD Assembly
• Low Speed Fan Relay
• MTV Actuator
• EVAP Purge
• SRV Valve
• Speed Control Vent Solenoid
• Speed Control Vacuum Solenoid
• 5 Volt Output
• Torque Reduction Request
• Transmission Control Relay
• Transmission Solenoids
• Vehicle Speed
Based on inputs it receives, the powertrain control
module (PCM) adjusts fuel injector pulse width, idle
speed, ignition timing, and canister purge operation.
The PCM regulates the cooling fans, air conditioning
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