Ignition Control Module: Service and Repair

REMOVAL

CAUTION: Use care in removing and handling the plenum assembly to avoid damaging the ignition module which is attached to the underside of the plenum.

Intake Plenum Chamber:

MAP Sensor And Ignition Control Module Locations:

1. Disconnect the negative battery cable.
2. Drain the coolant. (Coolant circulating through the plenum must be drained before removing the plenum).
3. Remove the air intake duct.
4. Remove the throttle cable cover attaching hardware and cover.
5. Remove the throttle and cruise control cables from the throttle body.
6. Remove the hold down clamp, and set the cables aside.
7. Disconnect the electrical connectors from:
^ Throttle Position Sensor (TPS).
^ Idle Air Control (IAC) valve.
^ Manifold Air Temperature (MAT) sensor.
8. Remove the coolant bleed hose from the plenum.
9. Remove the power brake hose from the plenum.
10. Remove the vacuum hose between the fuel pressure regulator and the plenum.
11. Remove the left and right vacuum hoses at mid-plenum.
12. Remove the Manifold Absolute Pressure (MAP) sensor attaching screws.
13. Remove the vacuum hose from the MAP sensor, and set the sensor aside.
14. Remove the bolts retaining the plenum assembly to the injector housings.
15. Remove the PCV dual hose fitting from the fitting.
16. Remove the canister hose from the plenum.
17. Lift the front of the plenum assembly and disconnect:
^ Left and right fresh air hoses from the throttle body extension.
^ Canister vacuum signal hose from the throttle body extension.
^ Electrical connectors from the ignition module.
18. Remove the plenum assembly and gaskets, discard the gaskets.
19. Cover the intake ports with tape to prevent dirt and any foreign material from entering.
20. Disconnect Module electrical connectors.
21. Remove module from plenum.

Reverse procedure to install.

Dielectric Grease Application:

INSTALLATION NOTES
Tighten module to plenum bolts to 10 Nm (89 in lbs).

Plenum Bolt Tightening Sequence:

Use new intake gaskets. Tighten intake plenum bolts to 26 Nm (20 lb.ft) in the sequence shown in illustration.