DTC P2566:00 [MZ-CD 1.6]

id0102g8267700

DTC P2566:00

Wastegate valve actuator position sensor circuit intermittent
DETECTION CONDITION
•  The PCM monitors the wastegate valve actuator position sensor signal. If the change in the wastegate valve actuator position sensor signal voltage detected by the wastegate valve actuator position sensor exceeds 0.498 V/10 ms, the PCM determines that there is an intermittent/erratic malfunction in the wastegate valve actuator position sensor circuit.
POSSIBLE CAUSE
•  Wastegate valve actuator position sensor connector or terminal malfunction
•  PCM connector or terminal malfunction
•  Short to power supply in wiring harness between wastegate valve actuator position sensor terminal C and PCM terminal 2AH
•  Short to ground in wiring harness between wastegate valve actuator position sensor terminal C and PCM terminal 2AH
•  Short to ground in wiring harness between wastegate valve actuator position sensor terminal B and PCM terminal 2AS
•  Open circuit in wiring harness between wastegate valve actuator position sensor terminal A and PCM terminal 2AC
•  Open circuit in wiring harness between wastegate valve actuator position sensor terminal B and PCM terminal 2AS
•  Open circuit in wiring harness between wastegate valve actuator position sensor terminal C and PCM terminal 2AH
•  Wastegate valve actuator position sensor 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 WASTEGATE VALVE ACTUATOR POSITION SENSOR CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the wastegate valve actuator position 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 WASTEGATE VALVE ACTUATOR POSITION SENSOR CONTROL CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between following wastegate valve actuator position sensor terminals (wiring harness-side) and body ground:
―  Terminal B
―  Terminal C
•  Is there continuity?
Yes
If the short to ground circuit could be detected:
•  Repair or replace the wiring harness for a possible short to ground.
If the short to ground circuit could not be detected:
•  Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 9.
No
Go to the next step.
5
INSPECT WASTEGATE VALVE ACTUATOR POSITION SENSOR
•  Inspect the wastegate valve actuator position sensor.
•  Is there any malfunction?
Yes
Replace the turbocharger, then go to Step 9.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZ-CD 1.6].)
No
Go to the next step.
6
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.
7
INSPECT WASTEGATE VALVE ACTUATOR POSITION SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Wastegate valve actuator position sensor and PCM connectors are disconnected.
•  Switch the ignition to ON.
•  Measure the voltage at the wastegate valve actuator position sensor terminal C (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.
8
INSPECT WASTEGATE VALVE ACTUATOR POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Wastegate valve actuator position sensor terminal A—PCM terminal 2AC
―  Wastegate valve actuator position sensor terminal B—PCM terminal 2AS
―  Wastegate valve actuator position sensor terminal C—PCM terminal 2AH
•  Is there continuity?
Yes
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 P2566:00 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.
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.