Jeep Cherokee (XJ): On-board diagnostics
Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Emission control systems > On-board diagnostics
- Emission system. Malfunction indicator lamp (mil). State display test mode
- Circuit actuation test mode. Diagnostic trouble codes. Diagnostic trouble code descriptions
- Task manager
- Monitored systems
- Trip definition. Component monitors. Non-monitored circuits
- High and low limits. Load value
Emission system. Malfunction indicator lamp (mil). State display test mode
Emission system
OPERATION
The Powertrain Control Module (PCM) monitors
many different circuits in the fuel injection, ignition,
emission and engine systems. If the PCM senses a
problem with a moni ...
Other materials:
Extended idle switch-pcm input. Oxygen sensor-pcm input. Ignition circuit sense-pcm input
Extended idle switch-pcm input
DESCRIPTION
USED ONLY WITH OPTIONAL POLICE
PACKAGE WHEN EQUIPPED WITH A 4.0L
ENGINE: The extended idle switch is a rocker-type
switch mounted to the instrument panel.
OPERATION
The extended idle switch is used to raise the
engine idle speed to approximately 1000 ...