A/C Refrigerant Pressure Sensor And Its Circuit Inspection; A/C Refrigerant Pressure Sensor Removal And Installation; A/C Switch Inspection - Suzuki SX4 Service Manual

A/C Refrigerant Pressure Sensor and Its Circuit
Inspection
1) Disconnect A/C refrigerant pressure sensor
connector.
2) Turn ignition switch to ON position.
3) Check if voltage between "RED" wire terminal and
"ORN" wire terminal of A/C refrigerant pressure
sensor connector is 4.75 V to 5.25 V.
If not, check A/C refrigerant pressure sensor circuit.
4) Connect A/C refrigerant pressure sensor connector
with ignition switch turned OFF.
5) Connect manifold gauge set to the charging valves.
6) Check A/C refrigerant pressure sensor voltage of
ECM connector referring to "A/C System Inspection
at ECM: Manual Type".
If voltage is not as specified below, replace A/C
refrigerant pressure sensor.
A/C refrigerant pressure sensor voltage
specifications (A/C refrigerant pressure measured
by manifold gauge)
0.8 MPa (8.0 kgf/cm 2 , 116 psi): 1.40 – 1.78 V
1.4 MPa (14 kgf/cm 2 , 203 psi): 2.18 – 2.64 V
1.6 MPa (16 kgf/cm 2 , 232 psi): 2.44 – 2.92 V
1.8 MPa (18 kgf/cm 2 , 261 psi): 2.70 – 3.21 V
A/C Refrigerant Pressure Sensor Removal and
Installation
Removal
1) Recover refrigerant from the A/C system with the
recovery and recycling equipment referring to
"Recovery" in "Operation Procedure for Refrigerant
Charge: Manual Type".
2) Disconnect negative (–) cable from battery.
3) Disconnect A/C refrigerant pressure sensor
connector.
4) Remove A/C refrigerant pressure sensor (1) from
liquid pipe (2).
1
Installation
Reverse removal procedure noting the following
instructions.
S7RW0A7216014
• Apply compressor oil to O-ring of A/C refrigerant
• Tighten A/C refrigerant pressure sensor to specified
• Evacuate and charge the A/C system referring to

A/C Switch Inspection

• Check that there is continuity between terminal (1)
S7RW0A7216015
• Check that there is no continuity between terminal (1)
If check result does not meet the above conditions,
replace HVAC control unit.
2
I5RW0A721029-01
Air Conditioning System: Manual Type 7B-29
pressure sensor.
torque.
Tightening torque
A/C refrigerant pressure sensor (a): 11 N·m (1.1
kgf-m, 8.0 lb-ft)
(a)
"Evacuation" and "Charge" in "Operation Procedure
for Refrigerant Charge: Manual Type".
and terminal (2) when A/C switch is at ON position.
and terminal (2) when A/C switch is at OFF position.
1
I5RW0A721030-01
S7RW0A7216016
2
I5RW0A721031-01