Abs Modulator And Power Unit Replacement - Procedure (91-026)

REMOVAL

1. Remove the strut bar. See Fig 1 .
2. Disconnect the 3 connectors. Remove the emission control box from the bulkhead. (Do not disconnect the vacuum hoses.) See Fig 2
3. Unbolt the brake line bracket (located under the emission control box) to allow for brake line fitting removal.
4. Disconnect the 4 engine wire harness connectors and unbolt the harness clamp. Disconnect the 3 solenoid/pump connectors. See Fig 3 .
5. Remove the 2 upper heat shield mounting bolts. Raise the car and loosen, but do not remove, the lower heat shield mounting bolt. (The lower heat shield mounting hole is shaped like a keyhole).
6. Lower the car and remove the heat shield.
7. Use the Bleeder T-Wrench to relieve the accumulator/line pressure.
8. Disconnect the 6 steel brake lines from the modulator. Cap or plug the 2 lines from the master cylinder to prevent fluid loss.
9. Loosen, but do not remove, the lower modulator bracket mounting bolt. Remove the 2 upper modulator bracket mounting bolts, then lift the modulator unit, power unit, and bracket out of the car as an assembly.

INSTALLATION

Except for the following steps, installation is the reverse of the removal procedure.

1. When tightening the steel brake lines to 14 ft. lbs. (19 N.m), have an assistant depress the brake pedal lightly to bleed the lines. Tighten the strut bar bolts to 16 ft. lbs. (22 N.m)
2. Bleed all four calipers with a pressure bleeder.
3. Remove the ALB 2 fuse from the under-hood fuse/relay box for at least 3 seconds to clear the ABS control unit's memory.
4. Function test the ABS with the ALB Checker.

Fig 1: Removing Strut Bar

Fig 2: Connectors & Emission Control Box

Fig 3: Engine Wire Harness Connectors

Fig 4: Removing Attaching Parts to Modulator Unit