Category: Heating, Ventilation and Air Conditioning
A/C System Service Leak Test Only use service equipment that is U.L.-listed and is cer- tified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system. CAUTION: Exposure to air conditioner refrigerant and lubricant vapor or mist can irritate eyes, nose and throat. Avoid breathing the air conditioner refrigerant […]
Troubleshooting Symptom-to-Components Chart Use this chart if the self-diagnosis checks don’t identify any cause for the symptom. Across each row in the chart, the potential sources of a symptom are ranked in the order they should be inspected in, starting with . Find the symptom in the left column, read across to the most likely […]
Compressor Clutch Overhaul 1. Remove the center bolt while holding the pressure plate. CENTER BOLT 12 N-m (1.2 kg-m, 9 Ib-ft) A/C CLUTCH HOLDER Commercially available Robinair: P/N 10204 Kent-Moore: P/N J37872 2. Remove the pressure plate and shim(s), taking care not to lose the shims. PRESSURE PLATE SHIM(S) 3. Use snap ring pliers to […]
Function Selection and Operation Check This check will quickly and automatically select and operate all functions of the climate control system, in the combina- tions and sequence shown below. It may help clarify a problem, or identify one that didn’t show up when you perform the self-diagnosis circuit check. Turn the FAN switch to AUTO, […]
Description Fan Control Unit The fan control unit performs calculations based on signals from the radiator fan control sensor. It them controls the operation of radiator fan speed (High-Low), engine compartment fan, condenser fan and A/C compressor. IG2 RADIATOR FAN (Low) RADIATOR FAN CONTROL SENSOR RADIATOR FAN (High) ENGINE COMPARTMENT FAN CONDENSER FAN (Right and […]
Outside Air Temperature Sensor Removal Remove the screw, disconnect the connector, and remove the outside air temperature sensor. Be careful not to damage the front grille and front bumper. OUTSIDE AIR TEMPERATURE SENSOR Test Compare the resistance reading between the terminals of the outside air temperature sensor with specifica- tions shown in the following graph: […]
“DEF” Door Adjustment Connect the control rod to the clip. Turn this lever all the way clockwise and hold it there. Turn this lever clockwise and hold it against its stop. “HEAT” Door Adjustment Reposition gear 2 so this mark lines up with the mark . on gear 1 Loosen this screw in gear 2. […]
A/C System Service Evacuation Only use service equipment that is U.L.-listed and is cer- tified to meet the requirements of SAE J2210 to remove HFC-134a (R-134a) from the air conditioning system. CAUTION: Exposure to air conditioner refrigerant and lubricant vapor or mist can irritate eyes, nose and throat. Avoid breathing the air conditioner refrigerant and […]
Mode Control Motor Test 1. Disconnect the mode control motor connector, turn the ignition switch ON (II), and move the blower switch to the middle setting. 2. Connect battery power to the No. 1 terminal of the mode control motor, then connect ground to the No. 2 terminal. The mode control motor should run, and […]
A/C Service Tips and Precautions The air conditioning system uses HFC-134a (R-134a) refrigerant and polyalkyleneglycol (PAG) refrigerant oil (ND-OIL 8: P/N 38899-PR7-A01), which are not compatible with CFC-12 (R-12) refrigerant and mineral oil. Do not use R-12 refriger- ant or mineral oil in this system, and do not attempt to use R-12 servicing equipment; damage […]