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NO: 24-13-99
SUBJECT: A/C Evaporator Freeze Up
DATE: July 2, 1999
OVERVIEW:
This bulletin involves installing a revised low pressure cycling switch.
SYMPTOM/CONDITION:
Intermittent low A/C output due to reduced airflow through the evaporator or excessive condensation draining from the vehicle after the vehicle has been turned off due to evaporator freeze up. The system will operate normally in most conditions. The condition will only occur after extended periods of driving with the A/C system operating. The system will return to normal operation after the A/C system has been turned off long enough for the ice on the evaporator to melt.
DIAGNOSIS:
If customers complain of this condition and no other A/C system problems are found, perform the Repair Procedure.
PARTS REQUIRED:
| Qty | Part No. | Description |
|---|---|---|
| 1 | 05015871AA | Low Pressure Cycling Switch (1997 Models) |
| 1 | 05015872AA | Low Pressure Cycling Switch (1998 – 1999 Models) |
REPAIR PROCEDURE:
- Disconnect and isolate the negative battery cable.
- Disconnect the low-pressure cycling switch connector from the low pressure cycling switch located on accumulator.
- Remove the switch from the accumulator and remove the O-ring.
- Lubricate the O-ring with refrigerant oil and transfer it to the new switch. Install the new switch. The switch should be hand tightened to the accumulator fitting.
- Connect the harness to the switch.
- Connect the negative battery cable.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
| Labor Op. No. | Time |
|---|---|
| 24-35-35-90 | 0.2 Hrs. |
FAILURE CODE:
| Code | Description |
|---|---|
| P8 | New Part |