Where is the fuse box on a 1999 Jeep Grand Cherokee Laredo?
The fuse panel is on the lower instrument panel just to the left of the steering column. A label is stamped on the fuse panel cover to identify each fuse for ease of replacement.
Where is the fuse box on a 04 Jeep Grand Cherokee?
The Jeep Cherokee has two fuse boxes: the Power Distribution Center is located under the hood and the junction fuse box is located inside the kick panel.
What is the ASD fuse for?
One of these components is the automatic shutdown relay, commonly referred to as the ASD relay. The ASD relay is responsible for supplying switched 12-volt power to the vehicle’s injectors and ignition coils, allowing them to provide fuel and produce spark.
What does ASD mean in a fuse box?
The power supplied to the fuel pump, ignition coil, fuel injectors, and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD); the idea is to shut off fuel pressure and the ignition systems when the key is turned off to prevent fires, dieseling, and other problems.
How do you test a jeep ASD relay?
(ASD) Relay Testing With An Ohmmeter With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance should be 75 ohms 5 ohms. Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
Where is the PCM relay located?
engine main fuse relay control box
What does ASD relay stand for?
The ASD relay is an acronym for Automatic Shutdown relay, but its acronym is popularly known. It is a major component of the fuel and ignition systems of modern vehicle engines.
How do you bypass an ASD relay?
Look at the side or bottom of the relay and it should show a simple diagram or at least numbers by the pins. The two pins that control power on the ASD circuit are #30 & #87, these are the pins you can temporarily put a jumper wire on to bypass the relay.
What is a PCM relay?
The PCM relay, also known as the powertrain control module relay, comes with a power relay that provides battery voltage to the right PCM circuits. This relay applies to all vehicles that use the OBD-II system, especially those vehicles that are newer than 1996 to present.
How do HVAC relays work?
In a blower motor, the relay supplies the power that allows the fans to circulate warmed air. Essentially an on/off switch, the blower motor relay’s reactions start and end the heating process in HVAC systems by controlling the flow of current between the power source and the motor.