Evaporator Core: Service and Repair

Evaporator/Heater Module Assembly:

Evaporator Replace:

Fig. 28 Electronic Brake Control Module (EBCM) Assembly Removal:

Brazed fittings are used on condenser and evaporator. These fittings cannot be turned. It is important that the service technician recognize which fitting is to be turned and use back-up wrenches. The brazed fitting that should not be turned is always the same color as the pipe it is brazed to.
1. Disconnect battery ground cable.
2. Discharge A/C system, then remove vacuum tank.
3. Remove rear sight shield, then disconnect positive battery booster cable from underhood fuse block. Refer to Engine Cover Replacement Service and Repair.
4. Remove underhood fuse block from relay bracket and position aside.
5. Remove relay bracket from dash panel, then the blower resistor from top of evaporator/heater module casing.
6. Disconnect A/C module to accumulator tube from accumulator.
7. Disconnect A/C compressor and condenser hose from accumulator.
8. Remove clamp from accumulator, then disconnect electrical connector from pressure cycling switch.
9. Disconnect evaporator to condenser tube from evaporator case and condenser.
10. Disengage tube from clips holding evaporator tube to fender, then remove tube from vehicle.
11. Remove blower motor, then all brackets from evaporator/heater module.
12. Remove heat shield from bottom of evaporator/heater module, then the three screws attaching bottom of module to dash panel.
13. Remove five screws attaching top and side of module to dash panel.
14. Cut insulator on module along line indicated.
15. Remove four module to insulator attaching screws, located behind insulator.
16. Remove Electronic Brake Control Module (EBCM) as follows:
a. Remove two screws attaching Assembly Line Diagnostic Link (ALDL) connector to righthand side sound insulator.
b. Remove push-on nuts and attaching bolts from left and right sound insulators, Fig. 28.
c. Remove righthand footwell courtesy light and oil life module from right side sound insulator, then the insulator from vehicle.
d. Remove left footwell courtesy light from left side sound insulator, then the insulator.
e. Remove two floor outlet assembly to instrument panel attaching screws.
f. Remove four EBCM bracket to instrument panel attaching screws.
g. Pull bracket away from instrument panel and remove EBCM to bracket attaching bolt, then slide EBCM out of bracket.
17. Pull down rug and padding, then remove dash panel to evaporator/heater module case attaching screw.
18. Pull module case away from dash panel and remove evaporator.
19. Reverse procedure to install.