Attachment VI - Fuel Pump Inertia Switch TSB (90-26-02)

Ford: 1990 Probe

Issue:
A water contaminated inertia switch (fuel pump shut-off switch) may cause the passive restraint belts to remain in the "B" pillar position.

Action:
Determine the source of the water entry and repair as required. Install a new inertia switch and protective cover. Refer to the following procedure for service details.

NOTE:
Review the 1990 Probe shop manual sections 24-35 on the fuel pump circuits and 41-54 pin 2F GN/BK wire from the passive restraint module to the inertia switch. The 1990 Probe EVTM page 23-1, 24-2, 25-2, 25-3, and 45-1 should be consulted for wire color codes, locations and routing.

1. Install a memory saver and disconnect the battery negative cable.





2. Locate and access the inertia switch. See Figure 1.

3. Check for water leaks in the area.

a. Identify the source of any water leaks.

b. Seal the area as required.

4. Remove the inertia switch.

a. Remove the affected bolts.

b. Disconnect the electrical connector from the switch.

c. Remove the inertia switch from the mounting bracket.

5. Install a new inertia switch on the mounting bracket.





6. Depress the red button on the top of the switch. See Figure 2.





7. Clean the mounting bracket of any grease or foreign material. See Figure 3.

8. Install a new protective cover.

a. Remove the adhesive protection paper from the cover.





b. Install the cover on the inertia switch. See Figure 4.

NOTE:
If the car already has a protective cover, inspect it to be sure that it can be securely attached. If there is any doubt, install a new cover.

9. Install the inertia switch and the bracket assembly and protective cover in the storage compartment.

NOTE:
When installing the inertia switch, make sure the protective cover does not come off.

10. Remove the memory saver and connect the battery negative cable.

11. Make sure the passive restraint system and inertia switch are operating properly. Refer to the 1990 Probe Shop Manual, Section 41-54, Pinpoint Test PR 5 for test procedure.

PART NUMBER PART NAME CLASS

F5AZ-9341-A Inertia Switch B
F12Z-9F315-A Protective Cover B

OPERATION DESCRIPTION TIME

902602A Install Inertia Switch &
Protective Cover 1.0 hr.

Dealer Coding:

Basic Part No. - 9341

Condition Code - 49