DTC P0533:00 [MZ-CD 1.6]

id0102g8850300

DTC P0533:00

Refrigerant pressure sensor circuit high input
DETECTION CONDITION
•  The PCM monitors the input signal from the refrigerant pressure sensor. If the voltage from the refrigerant pressure sensor is more than 4.49997 V, the PCM determine that there is a malfunction in the refrigerant pressure sensor.
POSSIBLE CAUSE
•  Refrigerant pressure sensor connector or terminal malfunction
•  Short to power supply in wiring harness between refrigerant pressure sensor terminal D and PCM terminal 1O
•  Refrigerant pressure sensor signal circuit and power supply circuit are shorted to each other
•  Refrigerant pressure sensor malfunction
•  PCM connector or terminal malfunction
•  Open circuit in wiring harness between refrigerant pressure sensor terminal C and PCM terminal 1N
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•   Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Verify related service repair information availability.
•  Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
•   If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT REFRIGERANT PRESSURE SENSOR CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the refrigerant pressure sensor connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
4
INSPECT REFRIGERANT PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition to ON (engine off).
•  Disconnect the refrigerant pressure sensor connector.
•  Measure the voltage at the refrigerant pressure sensor terminal D (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No
Go to the next step.
5
INSPECT REFRIGERANT PRESSURE SENSOR SIGNAL CIRCUIT AND POWER SUPLLY CIRCUIT FOR SHORT TO EACH OTHER
•  Switch the ignition to off.
•  Refrigerant pressure sensor and PCM connectors are disconnected.
•  Inspect for continuity between the refrigerant pressure sensor terminal A and D (wiring harness-side)
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to each other, then go to Step 9.
No
Go to the next step.
6
INSPECT REFRIGERANT PRESSURE SENSOR
•  Inspect the refrigerant pressure sensor.
•  Is there any malfunction?
Yes
Replace the refrigerant pressure sensor, then go to Step 9.
No
Go to the next step.
7
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 9.
No
Go to the next step.
8
INSPECT REFRIGERANT PRESSURE SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Refrigerant pressure sensor and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Refrigerant pressure sensor terminal C —PCM terminal 1N
•  Is there continuity?
Yes
Intermittent concern exists.
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
9
VERIFY THAT DTC P0533:00 TROUBLESHOOTING IS COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Run the vehicle under the FREEZE FRAME DATA stored condition.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
(See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].)
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the after repair procedure.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZ-CD 1.6].)
No
DTC troubleshooting completed.