A/C - Control Head Replacement Procedure

88cad06

Bulletin No. T-88-144
File in Group 1
Number 52
Corp. Ref. No. 811208
Date June '88
SUBJECT: A/C CONTROL HEAD REPLACEMENT PROCEDURE

MODELS AFFECTED: 1983-1984 CIMARRONS EQUIPPED WITH 2.0L L-4 ENGINES 1985-1986 CIMARRONS EQUIPPED WITH 2.8L V-6 ENGINES


When replacing the A/C control head on 1983-1984 Cimarrons equipped with 2.0L L-4 engines and 1985-1986 Cimarrons equipped with 2.8L V-6 engines, use the following procedure. This is to prevent multiple A/C control head electrical failures due to excessive current draw by the compressor clutch causing internal circuitry damage to the A/C control head.

1. Disconnect negative battery cable.

2. Remove two screws securing A/C cutout relay (located behind R.H. shock tower).

3. Disconnect relay connector.

FIGURE 1 - 1983-1984 CIRCUIT DIAGRAM:

FIGURE 2 - 1985-1986 CIRCUIT DIAGRAM:

4. Interchange circuit 959/59, pin E (1983, 1985, 1986 dark green, 1984 green/white) and circuit 39, pin C (1983-1985 pink/black, 1986 pink) at the relay connector using terminal removal tool, refer to Figures 1 and 2.
5. Replace the A/C control head according to the following procedure:

A. Remove the R.H. trim cover.

B. Remove the three screws attaching the control assembly to instrument panel.

C. Pull the control assembly out far enough to disconnect the electrical connector.

D. Remove A/C control head.

6. Reinstall relay connector and A/C cutout relay and reconnect negative battery cable.

For warranty purposes use Labor Operation D0362 at .4 hour with an add time of .4 hour for steps 1-4.