Subaru Crosstrek Service Manual: Pressure switch (triple pressure switch) Inspection
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Pressure Switch (Triple Pressure Switch)
INSPECTION
1. Connect the manifold gauge to the service valve on the high-pressure side.
2. Disconnect the connector.
3. Start the air conditioner, and check the operating pressure of switch by turning the compressor assembly (magnet clutch) to ON/OFF. Operation of each switch is as follows.
(1) | High pressure switch | (6) | 1,770±100 kPa (18.05±1.02 kg/cm2, 256.65±14.5 psi) | (11) | OFF |
(2) | Middle pressure switch | (7) | 1,470±120 kPa (14.99±1.22 kg/cm2, 213.15±17.4 psi) | (12) | Operative range of compressor ASSY |
(3) | Low pressure switch | (8) | 225±30 kPa (2.29±0.31 kg/cm2, 32.6±4.3 psi) | (13) | Inoperative range of compressor ASSY |
(4) | 2,350±200 kPa (24.00±2.04 kg/cm2, 340.7±29.0 psi) | (9) | 196±25 kPa (2.00±0.25 kg/cm2, 28.4±3.6 psi) | (14) | Low pressure |
(5) | 2,940±200 kPa (29.98±2.04 kg/cm2, 426.3±29.0 psi) | (10) | ON | (15) | High pressure |
NOTE:
• High pressure switch turns the compressor assembly (magnet clutch) to OFF when the refrigerant pressure becomes extremely high to prevent the evaporator, air conditioner piping and expansion valve from getting damaged or frozen, etc.
• The middle pressure switch is used to effectively control the radiator fan output by judging high load/low load in normal pressure range.
• The low pressure switch detects a refrigerant shortage and deactivates the compressor assembly (magnet clutch) if the refrigerant pressure is abnormally low. (Because any further compressor assembly operation in such a state may lead to compressor seizure)
Diagnostics with phenomenon Inspection
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Diagnostics with PhenomenonINSPECTIONRefer to “Diagnostics with Phenomenon” for “HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)” section. D ...
Refrigerant charging procedure Procedure
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Refrigerant Charging ProcedurePROCEDURECAUTION:• While working, be sure to wear protective goggles and protective gloves.• Air in the cycle ca ...
Other materials:
Installing a booster seat
WARNING
Child restraint systems and seatbelts
can become hot in a vehicle
that has been closed up in sunny
weather; they could burn a small
child. Check the child restraint
system before you place a child
in it.
Do not leave an unsecured child
restraint system in your vehicle.
...
Electrical specification
AUTO HEADLIGHT BEAM LEVELER SYSTEM (DIAGNOSTICS) > Control Module I/O SignalELECTRICAL SPECIFICATION1. AUTO HEADLIGHT BEAM LEVELER CMContentTerminal No.Measuring conditionStandardIG power supply1 ←> Chassis groundIgnition switch ON8 — 16 VGND2 ←> Chassis groundAlwaysLess than 1 ...
Dtc b2271 ign relay control circuit
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2271 IGN RELAY CONTROL CIRCUITDTC detecting condition:• When malfunction is detected in IG1 and IG2 drive circuits in the keyless access CM.• When malfunction is de ...
