Manual Transmission AJ-V6/AJ28
68
Clutch Pedal Assembly
The clutch pedal is mounted on a combined
assembly with the brake pedal. The clutch master
cylinder is directly actuated by the pedal and
shares a common reservoir with the brake system.
An assistor spring is fitted to the clutch pedal to
reduce the actuation load.
Operation of the pedal when in cruise control
mode activates a switch which cancels this mode.
D.307.316
CLUTCH PEDAL ASSEMBLY
D.307.316
Cruise Deactivate
Switch
Slave Cylinder
Hydraulic
Connection
Fluid from Brake
Reservoir
Clutch Master
Cylinder
Powertrain ManagementAJ-V6/AJ28
69
Introduction
All powertrain and associated management
functions are controlled from a single unit, the
powertrain control module (PCM). These
functions are as follows:
¥ overall monitoring and control of
performance, fuel economy, emissions,
driveability and safety
¥ receives and processes direct inputs from
engine, transmission, fuel system and
ancillary systems sensors
¥ provides direct control of actuator devices
¥ communicates with other modules via the
SCP bus (eg to obtain wheel speed
information)
¥ provides system diagnostics to conform to
OBDII requirements.
Powertrain Control Module (PCM)
The basic PCM is common to the V6 and V8
engines but with unique programming to suit the
respective engine characteristics and some
differences in the interface circuits for the
different sensors and actuators.
The PCM is located below the LH or RH mounted
A/C evaporator/blower unit and has a single
connector panel which protrudes through the
forward bulkhead into the engine bay.
The PCM has three connectors:
¥ a 60 pin connector which provides the
interfacing with the engine wiring harness:
carries engine mounted sensor inputs and
output control signals
¥ a 32 pin connector which carries the
transmission sensing and control signals and
also the rear HO2 sensor inputs
¥ a 58 pin connector which carries non engine
mounted sensor and actuator signals and
provides the PCM link to the SCP bus.
Powertrain Sub-Systems
Brief descriptions of PCM control of new
subsystems are given in the relevant engine and
transmission sections (electronic throttle,
returnless fuel etc).
J.303.1393
POWERTRAIN CONTROL MODULE
J.303.1393
