Suzuki Grand Vitara JB627. Manual - part 289
7B-72 Air Conditioning System:
A/C Refrigerant Pressure Sensor and Its Circuit
Inspection
S6JB0B7206015
1) Disconnect A/C refrigerant pressure sensor
connector.
2) Turn ignition switch to ON position.
3) Check if voltage between “GRY/RED” wire terminal
and “GRY/GRN” 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”.
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 kg/cm
2
, 116 psi): Approx. 1.46 – 1.71 V
1.4 MPa (14 kg/cm
2
, 203 psi): Approx. 2.28 – 2.53 V
1.6 MPa (16 kg/cm
2
, 232 psi): Approx. 2.55 – 2.80 V
1.8 MPa (18 kg/cm
2
, 261 psi): Approx. 2.82 – 3.03 V
A/C Refrigerant Pressure Sensor Removal and
Installation
S6JB0B7206016
Removal
1) Recover refrigerant from the A/C system with the
recovery and recycling equipment referring to
“Recovery” in “Operation Procedure for Charging A/
C with Refrigerant”.
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).
Installation
Reverse removal procedure noting the following
instructions.
• Apply compressor oil to O-ring of A/C refrigerant
pressure sensor.
• Tighten A/C refrigerant pressure sensor (1) to
specified torque.
Tightening torque
A/C refrigerant pressure sensor (a): 11 N·m (1.1
kgf-m, 8.0 lb-ft)
• Evacuate and charge the A/C system referring to
“Evacuation” and “Charge” in “Operation Procedure
for Charging A/C with Refrigerant”.
1
2
I5JB0A720049-03
1, (a)
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