No. 23 A/C Does Not Work Sufficiently: Contents

23	A/C DOES NOT WORK SUFFICIENTLY
DESCRIPTION	A/C compressor magnetic clutch does not engage when A/C switch is turned on.
TROUBLE AREA	ECM, combination meter or air conditioning amplifier DTC is stored Refrigerant pressure sensor malfunction Improper refrigerant charging amount Seized A/C compressor Evaporator temperature sensor malfunction Open or short circuit in wiring harness between the following terminals: Evaporator temperature sensor terminal D17-2-Combination meter terminal D58-8 Evaporator temperature sensor terminal D17-1-Combination meter terminal D58-16) Combination meter malfunction (Does not receive A/C request signal from air conditioning amplifier or transmit it to ECM) Air conditioning amplifier malfunction (A/C switch malfunction or air conditioning amplifier does not determine A/C request or transmit A/C request signal) Open circuit in wiring harness between magnetic clutch and body ground A/C relay stuck open Open circuit in wiring harness between the following terminals: IG1 relay terminal 5-A/C relay terminal 2 Battery positive terminal-A/C relay terminal 5 A/C relay terminal 3-Magnetic clutch terminal C25-1 A/C relay terminal 1-ECM terminal A42-21

NOTE:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

RELATED PIDS

Item (definition)	Unit/Condition	Definition	Condition/Specification (Reference)
A/C Request Signal	No(False)/Yes(True)	A/C switch status received by ECM via CAN	A/C switch off: No(False) A/C switch on: Yes(True)
Air conditioning compressor cycling switch	False/True	A/C relay status input from A/C relay	A/C relay off: False A/C relay on: True