ATC - Recirculation Timer Logic
Models: 1993 J30Section: Heater/Air Conditioner
Classification: HA93-005
Bulletin No.: ITB93-060
Date: November 29, 1993
J30 (JY32) ATC RECIRCULATION TIMER LOGIC
APPLIED MODEL:
1993 J30
APPLIED VIN:
JNKAY21D*PM006878
APPLIED DATE:
April, 1992
SERVICE INFORMATION
Some drivers may complain of odors from outside air (such as exhaust fumes) due to the recirculation switch turning off automatically after ten minutes of operation.
SERVICE PROCEDURE
For 1993 J30 vehicles only, the ten minute timer ATC recirculation timer has been eliminated in the control assembly. in the system's revised logic, the recirculation mode is maintained continuously after pressing the recirculation button, unless the ignition key or ATC power is turned off. When the ignition key or ATC power is turned off, the recirculation system will always default to the fresh air mode (non-recirculation).
NOTE:
This "control assembly" retrofit is available only on a customer pay basis. In addition, the expansion valve assembly (P/N 92200-10Y02) should also be replaced, which has different set values corresponding to the new control assembly. The original ATC recirculation operates as designed, elective replacement is not warranted.
PARTS INFORMATION
DESCRIPTION PART # QUANTITY
Control assembly 28520-10Y02 1
Expansion valve 92200-10Y02 1