DTC P0533:00 [SKYACTIV-D 1.5]

id0102q2850300

DTC P0533:00

Refrigerant pressure sensor circuit high input
DETECTION CONDITION
•  The PCM monitors the input voltage from the refrigerant pressure sensor. If the input voltage at the PCM terminal 2BH is above 4.95 V for 5 s, the PCM determines that the refrigerant pressure sensor circuit has a malfunction.
Diagnostic support note
•  This is an intermittent monitor (other).
•  The check engine light does not illuminate.
•  FREEZE FRAME DATA is not available.
•  Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Inhibits the A/C control.
POSSIBLE CAUSE
•  Refrigerant pressure sensor connector or terminals malfunction
•  PCM connector or terminals malfunction
•  Short to power supply in wiring harness between refrigerant pressure sensor terminal B and PCM terminal 2BH
•  Refrigerant pressure sensor power supply circuit and signal circuit are shorted to each other
•  Open circuit in wiring harness between refrigerant pressure sensor terminal C and PCM terminal 2Z
•  Refrigerant pressure sensor malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the snapshot data on the repair order.
—
Go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service 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 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 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.
5
INSPECT REFRIGERANT PRESSURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the refrigerant pressure sensor and PCM connectors are disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the refrigerant pressure sensor terminal B (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between refrigerant pressure sensor terminal B and PCM terminal 2BH.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to power supply.
Go to Step 9.
6
INSPECT REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT AND SIGNAL CIRCUIT FOR SHORT TO EACH OTHER
•  Verify that the refrigerant pressure sensor and PCM connectors are disconnected.
•  Switch the ignition off.
•  Inspect for continuity between refrigerant pressure sensor terminals A and B (wiring harness-side).
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Refrigerant pressure sensor terminal A—PCM terminal 2AR
•  Refrigerant pressure sensor terminal B—PCM terminal 2BH
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to each other.
Go to Step 9.
No
Go to the next step.
7
INSPECT REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
•  Verify that the refrigerant pressure sensor and PCM connectors are disconnected.
•  Inspect for continuity between refrigerant pressure sensor terminal C (wiring harness-side) and PCM terminal 2Z (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between refrigerant pressure sensor terminal C and PCM terminal 2Z.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 9.
8
INSPECT REFRIGERANT PRESSURE SENSOR
•  Reconnect all disconnected connectors.
•  Inspect the refrigerant pressure sensor.
•  Is there any malfunction?
Yes
Replace the refrigerant pressure sensor, then go to the next step.
(See REFRIGERANT PRESSURE SENSOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
(See REFRIGERANT PRESSURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Turn the A/C switch on.
•  Perform the DTC Reading Procedure.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
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 [SKYACTIV-D 1.5].)
No
DTC troubleshooting completed.