Dtc P0533: A/C Refrigerant Pressure Sensor Circuit High - Suzuki SX4 Service Manual

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1A-138 Engine General Information and Diagnosis:

DTC P0533: A/C Refrigerant Pressure Sensor Circuit High

Wiring Diagram
Refer to "DTC P0532: A/C Refrigerant Pressure Sensor Circuit Low".
DTC Detecting Condition and Trouble Area
DTC detecting condition
A/C refrigerant pressure sensor signal voltage is higher than specified
value.
(1 driving detection logic but MIL does not light up)
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Start engine and warm up engine to normal operating temperature.
4) Run engine at idle and turn both A/C switch and heater blower switch ON (turn ON air conditioning) for 3 min. or
more.
5) Check DTC and pending DTC.
Troubleshooting
NOTE
Before this troubleshooting is performed, read the precautions for DTC troubleshooting referring to
"Precautions for DTC Troubleshooting".
Step
1
Was "Engine and Emission Control System Check"
performed?
2
A/C refrigerant pressure sensor power supply circuit
check
1) Disconnect connector from A/C refrigerant pressure
sensor with ignition switch turned OFF.
2) Check for proper connection of A/C refrigerant pressure
sensor at "GRY/RED", "RED/BLU" and "ORN" wire
terminals.
3) Turn ON ignition switch, measure voltage between
engine ground and "GRY/RED" wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
3
A/C refrigerant pressure sensor power supply circuit
check
1) Disconnect connectors from MAP sensor with ignition
switch turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground and "GRY/RED" wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
4
A/C refrigerant pressure sensor signal circuit check
1) Turn ON ignition switch, measure voltage between
engine ground and "RED/BLU" wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
Action
Trouble area
• A/C refrigerant pressure sensor circuit
• A/C refrigerant pressure sensor
• MAP sensor
• ECM
Yes
Go to Step 2.
Go to Step 4.
Faulty MAP sensor.
Go to Step 6.
S7RW0A1104054
No
Go to "Engine and
Emission Control
System Check".
Go to Step 3.
"GRY/RED" wire is open
or shorted to power
circuit.
Go to Step 5.

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