Jeep Cherokee (XJ): Charging system
Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Charging system
STARTING SYSTEM
...
Charging system
DESCRIPTION
The charging system consists of:
Generator
Electronic Voltage Regulator (EVR) circuitry
within the Powertrain Control Module (PCM)
Ignition swi ...
Other materials:
Modes of operation
OPERATION
As input signals to the Powertrain Control Module
(PCM) change, the PCM adjusts its response to the
output devices. For example, the PCM must calculate
different injector pulse width and ignition timing for
idle than it does for wide open throttle (WOT).
The PCM will operate in two ...