Diagnostic procedure

A/C DOES NOT WORK SUFFICIENTLY - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Connect WDS or equivalent to DLC-2. Turn ignition key to ON (Engine OFF). Retrieve any DTCs. Is "PASSED" displayed?	Yes	No DTC is displayed: Go to next step.
1		No	DTC is displayed: Go to appropriate DTC test.
2	Disconnect A/C compressor connector. Start engine and turn A/C switch on. Is there correct voltage at terminal of A/C magnetic clutch connector? Specification More than 10.5 V	Yes	Inspect for GND condition of magnetic clutch on A/C compressor. If GND condition is okay, inspect for open circuit of magnetic clutch coil.
2		No	Go to next step.
3	Disconnect refrigerant pressure switch connector. Connect jumper wire between terminals B and C (high and low pressure side) of refrigerant pressure switch connector. Turn ignition key to ON (Engine OFF). Turn A/C switch on and set blower fan at any speed. Does A/C work?	Yes	Inspect refrigerant pressure switch operation. If switch is okay, go to next step.
3		No	Inspect for following: A/C switch is stuck open. Open circuit between refrigerant pressure switch and PCM terminal 5 Open circuit of blower motor fan switch and resistor (if blower motor does not operate) Inspect evaporator temperature sensor and A/C amplifier.
4	Remove jumper wire from switch connector. Reconnect connector to refrigerant pressure switch. Start engine and turn A/C switch on. Does fan operate?	Yes	Inspect for following: A/C relay is stuck open. Open circuit between A/C relay and PCM terminal 47
4		No	Inspect following and repair or replace as necessary: Refrigerant charging amount A/C compressor for being seized.
5	Verify test results. If okay, return to diagnostic index to service any additional symptoms. If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If vehicle is repaired, troubleshooting completed. If vehicle is not repaired or additional diagnostic information is not available, replace or reprogram PCM.