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How to Remove a 96 Galant ECM

All 1996 Mitsubishi Galants contain an engine control unit, also referred to as the ECM or ECU. This unit is fastened to the underside of the dashboard, beneath the radio and climate controls in the center section of the vehicle. The ECU is responsible for controlling the engine, transmission and other powertrain components. A malfunctioning ECU can cause an extremely wide range of symptoms due to the number of components that it controls. Some Galant owners are focused on the increasing the horsepower and performance of their engine. These owners may opt to remove and replace a properly functioning ECU with a unit that has been custom programmed to increase engine performance.

Instructions

Removal

1

Open the hood and locate the battery on the left side of the engine bay. Disconnect the negative battery terminal using a metric wrench.

2

Remove the two screws holding the radio console panel to the dashboard with a Phillips screwdriver. Insert a flat-head screwdriver in between the radio console panel and the dashboard. Pry around the outside edge of the console panel until it pops loose. Remove the console panel.

3

Remove the screws holding the radio and cup holder unit to the dashboard with a Phillips screwdriver. Slide the assembly out of the dashboard. Remove the screws from the bracket holding the cup holder to the radio assembly, then remove the bracket and the cup holder assembly.

4

Disconnect the electrical connectors from the radio and remove it from the vehicle.

5

Locate the ECU. It is a square metal box located directly underneath the radio. Remove the bolts holding the ECU to the vehicle with a ratchet and metric socket, then lift the ECU up and out of the console area. Disconnect the ECUs electrical connector and remove it from the vehicle.

Installation

6

Reconnect the ECUs electrical connector and set the ECU into position.

7

Install the ECUs retaining bolts and tighten them to 43 inch-pounds with a torque wrench.

8

Reconnect the radios electrical connectors and set the cup holder assembly into position under the radio. Set the side bracket into position and reinstall the bracket screws.

9

Set the radio and cup holder assembly back into the dashboard and reinstall the radio retaining screws. Set the radio console panel into position and press down on it until it snaps into place.

10

Reinstall the radio console panels retaining screws. Reconnect the negative battery terminal.

Posted by Unknown at 10:15 AM

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