Jeep Cherokee (XJ): Diagnosis and testing
Jeep Cherokee (XJ) 1984 - 2001 Service Manual > Cooling system > Diagnosis and testing
- On-board diagnostics (OBD). Accessory drive belt diagnosis. Preliminary checks
- Radiator coolant flow check. Cooling system-testing for leaks. Viscous fan drive
- Electric cooling fan. Radiator cap-to-filler neck seal-pressure relief check. Radiator cap-pressure testing
- Coolant-low level aeration. Deaeration
Cooling system
DESCRIPTION
The cooling system regulates engine operating temperature.
It allows the engine to reach normal operating
temperature as quickly as possible, maintains
normal operatin ...
On-board diagnostics (OBD). Accessory drive belt diagnosis. Preliminary checks
On-board diagnostics (OBD)
COOLING SYSTEM RELATED DIAGNOSTICS
The Powertrain Control Module (PCM) has been
programmed to monitor the certain following cooling
system components:
If the en ...
Other materials:
Automatic shutdown (asd) relay
sense-pcm input. Battery voltage-pcm input. Brake switch-pcm input
Automatic shutdown (asd) relay
sense-pcm input
DESCRIPTION
The ASD relay is located in the Power Distribution
Center (PDC). The PDC is located in the engine compartment.
Refer to label on PDC cover for relay location.
OPERATION
A 12 volt signal at this input indicates to the PCM
that the AS ...