DTC P0533:00 [MZI-3.7 (PCM CONNECTOR (3 TYPES))]
id0102e4850300
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DTC P0533:00 |
A/C refrigerant pressure sensor circuit high |
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DETECTION CONDITION
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• A DTC is stored if the refrigerant pressure sensor output voltage is above the calibrated level.
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POSSIBLE CAUSE
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• Connector or terminal malfunction
• Short to power supply circuit between refrigerant pressure sensor terminal B and PCM terminal 1M
• Open circuit between refrigerant pressure sensor terminal B and PCM terminal 1M
• Refrigerant pressure sensor malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
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Yes
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Go to the next step.
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No
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Record FREEZE FRAME DATA on the repair order, then go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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INSPECT REFRIGERANT PRESSURE SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the refrigerant pressure sensor connector.
• Inspect for poor connection (such as damaged/ pulled-out pins, corrosion).
• Are there any malfunction?
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Yes
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Repair or replace suspected part, then go to Step 8.
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No
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Go to the next step.
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4
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INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/ pulled-out pins, corrosion).
• Are there any malfunction?
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Yes
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Repair or replace suspected part, then go to Step 8.
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No
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Go to the next step.
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5
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INSPECT REFRIGERANT PRESSURE SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
• Refrigerant pressure sensor and PCM connectors are disconnected.
• Turn the ignition switch to the ON position (engine off).
• Measure the voltage between refrigerant pressure sensor terminal B (wiring harness-side) and body ground.
• Is the voltage B+?
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Yes
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Repair or replace suspected part, then go to Step 8.
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No
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Go to the next step.
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6
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INSPECT REFRIGERANT PRESSURE SENSOR CIRCUIT FOR OPEN CIRCUIT
• Refrigerant pressure sensor and PCM connectors are disconnected.
• Turn the ignition switch off.
• Inspect for continuity between refrigerant pressure sensor terminal B (wiring harness-side) and PCM terminal 1M (wiring harness-side).
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace suspected part, then go to Step 8.
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7
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INSPECT REFRIGERANT PRESSURE SENSOR
• Inspect the refrigerant pressure sensor.
• Is there any malfunction?
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Yes
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Replace the refrigerant pressure sensor, then go to the next step.
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No
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Go to the next step.
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8
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VERIFY TROUBLESHOOTING OF DTC P0533:00 HAS BEEN COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine and warm it up completely.
• Turn the A/C switch and the fan switch on.
• Retrieve DTCs using the M-MDS.
• Is the PENDING CODE for this DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the PCM.
Go to the next step.
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No
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Go to the next step.
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9
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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Troubleshooting completed.
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