DTC P2564:00 [PCM (SKYACTIV-D 2.2)]

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Engine Type

Item	Reference
Fuel injector (2 pin type)	(See Fuel injector (2 pin type).)
Fuel injector (6 pin type)	(See Fuel injector (6 pin type).)

Fuel injector (2 pin type)

DTC P2564:00	Regulating valve actuator position sensor: Low input
DETECTION CONDITION	•  If the input voltage at the PCM terminal 1BP is less than 0.21 V for 5 s, the PCM determines that the regulating valve position sensor circuit has a malfunction. MONITORING CONDITIONS ―  Battery voltage: 8—20 V ―  0.5 s have elapsed after the ignition was switched ON (engine off or on) Diagnostic support note •  This is a continuous monitor (CCM). •  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. •  FREEZE FRAME DATA/Snapshot data is available. •  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	•  Inhibits the boost control. •  Inhibits engine-stop by operating the i-stop function. •  PCM restricts engine-transaxle integration control. (ATX)
POSSIBLE CAUSE	•  Regulating valve position sensor connector or terminals malfunction •  Short to ground in wiring harness between the following terminals: ―  Regulating valve position sensor terminal C—PCM terminal 1BO ―  Regulating valve position sensor terminal B—PCM terminal 1BP •  PCM connector or terminals malfunction •  Regulating valve position sensor signal circuit and ground circuit are shorted to each other •  Open circuit in wiring harness between regulating valve position sensor terminal C and PCM terminal 1BO •  Regulating valve position sensor malfunction •  PCM malfunction

Diagnostic Procedure

Fuel injector (6 pin type)

Note

•  To determine the malfunctioning part, proceed with the diagnostics from “Function inspection using M-MDS”.

Details on DTCs

System malfunction location	Regulating valve actuator position sensor: Low input
Detection conditions	Determination condition	•  The output voltage of the regulating valve actuator position sensor is lower than 0.233 V for a continuous 1.5 s.
	Preconditions	•  All of the following conditions are met. ―  Battery positive voltage: 8—16 V ―  0.5 s have elapsed after ignition is switched ON (engine off or on) ―  The following DTCs are not detected •  Constant voltage power supply control system: P0652:00, P0653:00
	Drive cycle	•  1
	Self-test type	•  CMDTC self test
	Sensor/unit used	•  Regulating valve actuator position sensor
Fail-safe	•  Limits engine torque. •  Inhibits the automatic diesel particulate filter regeneration control. •  Inhibits the manual diesel particulate filter regeneration control. •  Inhibits the boost control. •  Inhibits the EGR control. •  Stops the G-vectoring control (GVC). •  Limits the engine transaxle total control.
Vehicle status when DTCs are output	•  Check engine light turns on
Possible cause	•  Regulating valve actuator position sensor connector or terminal malfunction •  PCM connector or terminal malfunction •  Short to ground in wiring harness between the following terminals: ―  Regulating valve actuator position sensor terminal B and PCM terminal 1DE ―  Regulating valve actuator position sensor terminal C and PCM terminal 1DY •  Short circuit in regulating valve actuator position sensor signal circuit and ground circuit •  Open circuit in wiring harness between regulating valve actuator position sensor terminal B and PCM terminal 1DE •  Regulating valve actuator position sensor malfunction •  PCM malfunction

System Wiring Diagram

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Function Explanation (DTC Detection Outline)

•  If the following condition is detected, the PCM determines that there is a short to ground or an open circuit between the regulating valve actuator position sensor terminal and the PCM terminal, and stores a DTC.

―  The output voltage of the regulating valve actuator position sensor is lower than 0.233 V for a continuous 1.5 s.

Repeatability Verification Procedure

•  Leave the vehicle for 10 s with the ignition switched ON (engine off) or while idling.

PID Item/Simulation Item Used in Diagnosis

PID

Function Inspection Using M-MDS

Step	Inspection	Results	Action
1	PURPOSE: 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 freeze frame data/snap shot data.	—	Go to the next step.
2	PURPOSE: DETERMINE IF MALFUNCTION IS CAUSED BY REGULATING VALVE ACTUATOR POSITION SENSOR MALFUNCTION •  Inspect the regulating valve actuator position sensor. (See REGULATING VALVE ACTUATOR POSITION SENSOR INSPECTION [SKYACTIV-D 2.2]) •  Is the regulating valve actuator position sensor normal?	Yes	Go to the troubleshooting procedure to perform the procedure from Step 1.
		No	Inspect the related wiring harnesses and connectors. •  Repair or replace the malfunctioning location. Go to the troubleshooting procedure to perform the procedure from Step 5.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

•  Step 1

―  Verify that there is no problem with engagement of each separate part.

•  Steps 2 to 4

―  Verify that there is no malfunction in regulating valve actuator position sensor terminals B, C, and D.

•  Steps 5 to 6

―  Verify that primary malfunction is resolved and there are no other malfunctions.

Step	Inspection	Results	Action
1	PURPOSE: VERIFY IF CONNECTOR DAMAGE OF EACH PART AFFECTS DIAGNOSTIC RESULTS •  Switch the ignition OFF. •  Disconnect the connectors of the following parts: ―  Regulating valve actuator position sensor ―  PCM •  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector, then go to Step 6.
2	PURPOSE: VERIFY IF SHORT TO GROUND IN REGULATING VALVE ACTUATOR POSITION SENSOR CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the regulating valve actuator position sensor connector and the PCM connector are disconnected. •  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground. ―  Regulating valve actuator position sensor terminal B ―  Regulating valve actuator position sensor terminal C •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Regulating valve actuator position sensor terminal B and PCM terminal 1DE •  Regulating valve actuator position sensor terminal C and PCM terminal 1DY If there is a common connector: ―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. ―  Repair or replace the malfunctioning location. If there is no common connector: ―  Repair or replace the wiring harness which is shorted to ground. Go to the next step.
		No	Go to the next step.
3	PURPOSE: VERIFY IF SHORT CIRCUIT IN REGULATING VALVE ACTUATOR POSITION SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the regulating valve actuator position sensor connector and the PCM connector are disconnected. •  Inspect for continuity between regulating valve actuator position sensor terminals C and D (vehicle wiring harness side). •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Regulating valve actuator position sensor terminal C and PCM terminal 1DY •  Regulating valve actuator position sensor terminal D and PCM terminal 1DR If there is a common connector: ―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location. ―  Repair or replace the malfunctioning location. If there is no common connector: ―  Repair or replace the malfunctioning wiring harness. Go to Step 6.
		No	Go to the next step.
4	PURPOSE: VERIFY IF OPEN CIRCUIT IN REGULATING VALVE ACTUATOR POSITION SENSOR POWER SUPPLY CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the regulating valve actuator position sensor connector and the PCM connector are disconnected. •  Inspect the wiring harness for continuity between regulating valve actuator position sensor terminal B (vehicle wiring harness side) and PCM terminal 1DE (vehicle wiring harness side). •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between regulating valve actuator position sensor terminal B and PCM terminal 1DE. If there is a common connector: •  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location. •  Repair or replace the malfunctioning location. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to Step 6.
		No	Go to the next step.
5	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION •  Reconnect all disconnected connectors and hoses. •  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)].) •  Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) •  Display the DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) •  Is DTC P2564:00 displayed?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
		No	Go to the next step.
6	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION •  Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
		No	DTC troubleshooting completed.