|
|
DIAGNOSTIC PROCEDURE NO.23 A/C DOES NOT WORK SUFFICIENTLY (MZI-3.7) DIAGNOSTIC PROCEDURE POSSIBLE CAUSE Open the A/C magnetic clutch Open circuit in wiring harness between A/C relay and A/C magnetic clutch Poor GND of A/C magnetic clutch Refrigerant pressure switch is stuck open. A/C relay is stuck open. Seized A/C compressor Open circuit in wiring harness between A/C switch and PCM through both STEP INSPECTION RESULTS ACTION 1 Connect the M-MDS to the DLC- Yes DTC is displayed: No No DTC is displayed: Go to the next step. 2 Disconnect A/C compressor Yes Inspect for GND condition of magnetic clutch on No Go to the next step. 3 Disconnect refrigerant pressure Yes Inspect refrigerant pressure switch operation. No Inspect for the following: A/C switch is stuck open. Open circuit in wiring harness between refrigerant pressure switch and PCM terminal 1R Open circuit in wiring harness between blower motor fan switch and resistor (if blower motor does not operate) Evaporator temperature sensor and A/C amplifier Remove jumper wiring from the Yes Inspect whether A/C relay is stuck open.
2008 Mazda CX-9 Grand Touring 2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:06 AM Page 82 © 2005 Mitchell Repair Information Company, LLC. |