How to Replace a PCM ECM ECU (Engine Computer) on 2003 Dodge Caravan 3.3L

REMOVAL

A Powertrain Control Module (PCM) on a 2003 Dodge Caravan 3.3L.

2003 Dodge Caravan Power Control Module.
2003 Dodge Caravan Power Control Module.
  1. Power Battery.
  2. Power Distribution Center.
  3. PCM Module.

How to Remove a PCM Module

SBEC Controller. We start with removing of SBEC Controller (Single Board Engine Controller).

  1. Disconnect the negative cable from the battery.
  2. Remove the battery shield.
  3. Unscrew two PCM bolts from the top.
2003 Dodge Caravan PCM, fig.1.
2003 Dodge Caravan PCM, fig.1.

4. Disconnect two PCM connectors.

5. Remove the headlamp retaining screws.

6. Remove the mounting bolt from the bottom of PCM.

2003 Dodge Caravan PCM removal, fig. 2.
2003 Dodge Caravan PCM removal, fig. 2.

7. Remove the PCM Module.

 

NGC Controller. Having the negative battery cable disconnected, remove the NGC Controller (Next Generation Controller).

1. Make sure the wheels of the vehicle are turned to the left.
2. Raise vehicle and support.
3. Remove the left front wheel well splash shield.

2003 Dodge Caravan PCM removal, fig. 3.
2003 Dodge Caravan PCM removal, fig. 3.

4. Disconnect the connectors.

2003 Dodge Caravan PCM, fig. 4.
2003 Dodge Caravan PCM, fig. 4.

5. Unscrew THREE screws that straighten the PCM to the mounting bracket.
6. Remove the PCM.

 

INSTALLATION

Putting the SBEC Controller back on.

  1. Install the PCM.
  2. Put the lower PCM mounting bolt in, and tighten it.
  3. Place the upper PCM bracket bolts, and tighten them.
  4. Install the headlamp back in.
  5. Connect the two PCM cables.
  6. Place the battery shield back on.

Installing the NGC Controller.

  1. Place the PCM on the mounting bracket.
  2. Install electrical connectors and lock.
  3. Install the splash shield.
  4. Lower the vehicle.
  5. Connect the negative cable to the battery.

 

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