No you have to disconnect the wiring under the dash.
On a 1999 Mercury Mountaineer : The Powertrain Control Module ( PCM ) is in the engine compartment , passing through the firewall . From the engine compartment , towards the passenger side of the engine compartment , you will see where the wiring harness is bolted to one end of the PCM at the firewall ( most of the PCM is " hidden " behind the glove compartment )
The firewall is the steel bulkhead that separates the engine compartment from the driver compartment.The firewall is the steel bulkhead that separates the engine compartment from the driver compartment.
The firewall is the metal wall that divides the engine compartment from the passenger compartment
The firewall separates the engine compartment from the passenger compartment
The firewall is the barrier that separates the engine compartment from the passenger compartment.
You can see one end of the Powertrain Control Module from the engine compartment It passes through the firewall , most of the PCM is " hidden " behind the glove compartment but you can see where the wiring harness is bolted to the end of the PCM on the firewall over towards the passenger side of the engine compartment
the firewall on a f250 is the wall of the cab between the engine and the passenger compartment on any vehicle the firewall is the wall that seperates engine compartment from passenger compartment
From the engine compartment you will see the wiring harness bolted to one end of the PCM as it passes through the firewall ( most of it is " hidden " behind the glove compartment )
The firewall is between the engine compartment and the passenger compartment.
the firewall is between the passanger compartment, behind the dashboard and the engine compartment.
The firewall divides the passenger compartment from the engine compartment
The firewall is the metal wall that divides the engine compartment from the passenger compartment