DTC P024F [MZ-CD 1.6 (Y6) (EURO4 emission level)]

id0102g6223100

DTC P024F

Air bypass valve actuator control circuit high input
DETECTION CONDITION
•  The PCM monitors the air bypass valve actuator control signal circuit at PCM terminal 248. If the PCM detects that air bypass valve actuator control circuit is short to power supply for 2s when the PCM duty-controls the air bypass valve actuator, the PCM determines that there is a short to powe supply circuit in the air bypass valve actuator control circuit.
POSSIBLE CAUSE
•  Air bypass valve connector or terminal malfunction
•  PCM connector or terminal malfunction
•  Air bypass valve actuator control and power supplycircuits are short to each other
•  Short to power supply in wiring harness between air bypass valve terminal D and PCM terminal 248
•  Air bypass valve actuator malfunction
•  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 AIR BYPASS VALVE CONNECTOR CONDITION
•  Switch the ignition to OFF.
•  Disconnect the aie bypass valve 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 7.
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 7.
No
Go to the next step.
5
INSPECT AIR BYPASS VALVE ACTUATOR CONTROL SIGNAL AND POWER SUPPLY CIRCUITS FOR SHORT TO EACH OTHER
•  Remove the main relay.
•  Air bypass valve component and PCM connectors are disconnected.
•  Inspect for continuity between air bypass valve terminals C and D (wiring harness-side).
•  Is there any continuity?
Yes
Repair or replace the wiring harness for a possible short to each other, then go to Step 7.
No
Go to the next step.
6
INSPECT AIR BYPASS VALVE ACTUATOR CONTROL SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Air bypass valve component and PCM connectors are disconnected.
•  Install the main relay.
•  Switch the ignition to ON (engine off).
•  Measure the voltage air bypass valve 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 the next step.
No
Replace the air bypass valve component, then go to the next step.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
7
VERIFY THAT DTC P024F 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.
Go to the next step.
No
Go to the next step.
8
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 (Y6) (EURO4 emission level)].)
No
DTC troubleshooting completed.