Why does my ASD fuse keep blowing out?
Why does my ASD fuse keep blowing out?
Most blowing ASD fuses revolve around shorted oxygen sensor heaters or the wiring going to the oxygen sensors. Look for a wiring harness that fell down onto hot exhaust parts. If everything looks okay, unplug the O2 sensors, then if the short appears to be gone, reinstall the ASD relay and fuse then try to start the engine.
Why does my TCM fuse blow when I start the engine?
Unplug those sensors. The ignition coil and injectors are in this circuit. They are turned off by the Engine Computer removing their ground circuits, so even if one of those parts were shorted, the fuse wouldn’t blow until you started cranking the engine. That eliminates the coil and injectors as suspects, but not the wires going to them.
What to do if your fuse blows on your car?
Look for a wiring harness that fell down onto hot exhaust parts. If everything looks okay, unplug the O2 sensors, then if the short appears to be gone, reinstall the ASD relay and fuse then try to start the engine.
What does a light in place of a fuse mean?
The bright light in place of the fuse or the relay is showing it is getting the full 12 volts. That means it’s getting 12 volts from the battery, AND a good ground, which is what we don’t want. That’s just a different way of saying there’s a short to ground on that circuit.
What does the PCM do when the ASD fuse blows?
If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC). The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off.
Where is the fuse located on an ASD?
The fuse is located in teh PDC. The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position.
Most blowing ASD fuses revolve around shorted oxygen sensor heaters or the wiring going to the oxygen sensors. Look for a wiring harness that fell down onto hot exhaust parts. If everything looks okay, unplug the O2 sensors, then if the short appears to be gone, reinstall the ASD relay and fuse then try to start the engine.
Why does my ECM 1 fuse keep blowing?
If the wires leading to the O2 sensor rub against the exhaust, it creates a ground; once the O2 sensor is grounded, the fuse to the ECM 1 blows. The O2 sensor must be installed in a different place to ensure the wires do not short-circuit.
