Removal and Replacement

Powertrain Control Module And Fuel Pump Relay:

REMOVAL

CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.

NOTE: The Powertrain Control Module (PCM) is located on the floor tunnel ahead of the shift console in the PCM bracket. The Powertrain Control Module Relay (12A646) and fuel pump relay (9345) are mounted on the PCM bracket.

1. Disconnect the battery ground cable (14301).

2. Remove the shift console and control box side covers (04541).

3. Disconnect the EEC-IV harness connector from the PCM.

4. Remove the PCM relay and the fuel pump relay from the PCM bracket.

5. Remove the rear seat heater outlet duct adapter and pad from the top of the PCM bracket.

6. Remove the three PCM bracket bolts and loosen the one retaining nut.

7. Remove the PCM and bracket from the vehicle floor tunnel.

8. Remove the PCM from the the PCM bracket by sliding it straight out.

INSTALLATION

1. Reverse the removal procedure.

2. Tighten the PCM bracket bolts to 8 Nm (6 ft lb).

3. Tighten the wiring harness electrical connector bolt to 6.2 Nm (55 in lb).

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the adaptive strategy.