A/C - Poor Performance

Bulletin No.: 017/92
Issued: 10/9/92
Revised: 10/23/92

Category
U

Applicable Model/s
1992 MX-3
(1.6L, 4 Cyl.)

Subject:
POOR A/C PERFORMANCE

* The revised section is indicated by an asterisk. Please replace the original bulletin with this revised bulletin.

DESCRIPTION

Some vehicles may experience poor A/C performance. The cause is insufficient air flow across the A/C condenser.

A modified sub-harness has been developed to allow both the A/C and engine cooling fans to operate simultaneously and improve condenser air flow.

NOTE:
Prior to installing this sub-harness, verify the A/C system has the correct amount of refrigerant charge and check for any other conditions which may contribute to poor A/C performance - refrigerant leakage or poor A/C connections.

REPAIR PROCEDURE

1. Disconnect the battery negative cable.

2. Obtain 1 new sub-harness (EAY1 61 54X) and 9 tie-wraps (NA02 61 435). Examine the couplers at each end of the harness. One end of the harness has two 6-pin connectors each with 4 terminals. The other end of the harness also has two 6-pin connectors; one with 5 terminals, the other with 6 terminals.





NOTE:
See figure 1.





3. Locate the A/C relay (near the passenger side shock tower, figure 2) and disconnect it from the existing A/C harness.

4. Plug the 6-terminal male connector of the new sub-harness into the A/C relay.

5. Plug the 5-terminal female connector of the new sub-harness into the existing A/C harness.

6. Remove the coolant reservoir and the fresh air duct.

7. Route the new sub-harness along the existing A/C harness.

8. Tie-wrap the new sub-harness along the A/C harness at each of the 9 existing tie-wrap locations.

9. Disconnect the A/C harness from the main fuse box. The connector is located in the front part of the fuse box and is the connector closest to the fender.

10. Plug the 4-terminal male connector of the new sub-harness into the main fuse box (figure 2).

11. Plug the 4-terminal female connector of the new sub-harness into the existing A/C harness.

12. Connect the battery negative cable. Start the engine. Turn on the A/C and verify that both cooling fans are operating.

13. Reinstall coolant reservoir and fresh air duct.

PARTS INFORMATION

PART NUMBER DESCRIPTION QTY APPLICABLE MODEL

EAY 1 61 54X Harness 1992 MX-3 (1.6L, 4 Cyl.)

WARRANTY INFORMATION
(Applies to vehicles covered under warranty.)

Warranty Type Code: A
Customer Comment Code: A1
Damage Code: AA*
Part No. of Main Cause: EAY1 61 54X
Operation No.: YY0089RX
Labor Hour: 0.3 Hrs.