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1
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RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.
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Note
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• Recording can be facilitated using the screen capture function of the PC.
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—
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Go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
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Yes
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Perform repair or diagnosis according to the available 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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DETERMINE IF REFRIGERANT PRESSURE SENSOR No.1 OR WIRING HARNESS MALFUNCTION
• Access the A/C_PRES_BEF_EXP_VLV PID using the M-MDS.
• Verify the A/C_PRES_BEF_EXP_VLV PID value.
• Is the A/C_PRES_BEF_EXP_VLV PID value 5 V or B+?
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Yes
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Go to Step 7.
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No
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Go to the next step.
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4
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INSPECT REFRIGERANT PRESSURE SENSOR No.1 CONNECTOR FOR MALFUNCTION
• Inspect the applicable connector and terminal.
• Are the connector and terminal normal?
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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 the malfunctioning location and perform the repair completion verification.
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5
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INSPECT PCM CONNECTOR FOR MALFUNCTION
• Inspect the applicable connector and terminal.
• Are the connector and terminal normal?
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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 the malfunctioning location and perform the repair completion verification.
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6
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INSPECT REFRIGERANT PRESSURE SENSOR No.1 FOR MALFUNCTION
• Inspect the applicable part.
• Is the part normal?
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Yes
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Go to repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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7
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DETERMINE IF REFRIGERANT PRESSURE SENSOR No.1 SIGNAL CIRCUIT OR REFRIGERANT PRESSURE SENSOR No.1 GROUND CIRCUIT MALFUNCTION
• Switch the ignition off.
• Disconnect the refrigerant pressure sensor No.1 connector.
• Access the A/C_PRES_BEF_EXP_VLV PID using the M-MDS.
• Verify the A/C_PRES_BEF_EXP_VLV PID value.
• Is the A/C_PRES_BEF_EXP_VLV PID value 5 V or B+?
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Yes
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Go to the next step.
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No
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Go to Step 9.
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8
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INSPECT REFRIGERANT PRESSURE SENSOR No.1 SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect the applicable circuit for open circuit.
• Is the circuit normal?
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Yes
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Inspect the signal circuit for a short to power supply.
• Repair or replace the malfunctioning location and perform the repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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9
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INSPECT REFRIGERANT PRESSURE SENSOR No.1 GROUND CIRCUIT FOR OPEN CIRCUIT
• Inspect the applicable circuit for open circuit.
• Is the circuit normal?
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Yes
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Replace the refrigerant pressure sensor No.1 and perform the repair completion verification.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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Repair completion verification 1
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VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory.
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
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― Perform the KOEO or KOER self test.
• Perform the DTC inspection for the PCM.
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step.
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No
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Go to the next step.
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Repair completion verification 2
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VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection.
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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