DTC P2588:00 [PCM (SKYACTIV-D 2.2)]

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Note

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

Details on DTCs

System malfunction location	Variable turbine geometry turbocharger actuator position sensor: Low input
Detection conditions	Determination condition	•  The output voltage of the variable turbine geometry turbocharger 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 on)
	Drive cycle	•  1
	Self-test type	•  CMDTC self test
	Sensor/unit used	•  Variable turbine geometry turbocharger 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	•  Variable turbine geometry turbocharger actuator connector or terminal malfunction •  PCM connector or terminal malfunction •  Short to ground in wiring harness between the following terminals: ―  Variable turbine geometry turbocharger actuator position sensor terminal E and PCM terminal 1BE ―  Variable turbine geometry turbocharger actuator position sensor terminal D and PCM terminal 1BP •  Short circuit in variable turbine geometry turbocharger actuator position sensor signal circuit and ground circuit •  Open circuit in wiring harness between variable turbine geometry turbocharger actuator position sensor terminal C and PCM terminal 1BD •  Variable turbine geometry turbocharger actuator position sensor malfunction •  PCM malfunction

System Wiring Diagram

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Function Explanation (DTC Detection Outline)

―  The output voltage of the variable turbine geometry turbocharger actuator position sensor is lower than 0.233 V for a continuous 1.5 s.

Repeatability Verification Procedure

PID Item/Simulation Item Used in Diagnosis

PID

Simulation item

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 VARIABLE TURBINE GEOMETRY TURBOCHARGER ACTUATOR POSITION SENSOR •  Inspect the variable turbine geometry turbocharger actuator position sensor. (See VARIABLE TURBINE GEOMETRY TURBOCHARGER ACTUATOR POSITION SENSOR INSPECTION [SKYACTIV-D 2.2]) •  Is the variable turbine geometry turbocharger 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

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

―  Verify that there is no malfunction in variable turbine geometry turbocharger actuator position sensor terminals C, D, and E.

―  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: ―  Variable turbine geometry turbocharger actuator ―  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 5.
2	PURPOSE: VERIFY IF SHORT TO GROUND IN VARIABLE TURBINE GEOMETRY TURBOCHARGER ACTUATOR POSITION SENSOR POWER SUPPLY CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the variable turbine geometry turbocharger actuator position sensor connector and the PCM connector are disconnected. •  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground. ―  Variable turbine geometry turbocharger actuator position sensor terminal E ―  Variable turbine geometry turbocharger actuator position sensor terminal D •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. •  Variable turbine geometry turbocharger actuator position sensor terminal E and PCM terminal 1BE •  Variable turbine geometry turbocharger actuator position sensor terminal D and PCM terminal 1BP 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 the next step.
		No	Go to the next step.
3	PURPOSE: VERIFY IF SHORT CIRCUIT IN VARIABLE TURBINE GEOMETRY TURBOCHARGER ACTUATOR POSITION SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the variable turbine geometry turbocharger actuator position sensor connector and the PCM connector are disconnected. •  Inspect for continuity between variable turbine geometry turbocharger actuator position sensor terminals D and C (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. •  Variable turbine geometry turbocharger actuator position sensor terminal D and PCM terminal 1BP •  Variable turbine geometry turbocharger actuator position sensor terminal C and PCM terminal 1BD 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 5.
		No	Go to the next step.
4	PURPOSE: VERIFY IF OPEN CIRCUIT IN VARIABLE TURBINE GEOMETRY TURBOCHARGER ACTUATOR POSITION SENSOR POWER SUPPLY CIRCUIT AFFECTS DIAGNOSTIC RESULTS •  Verify that the variable turbine geometry turbocharger actuator connector and the PCM connector are disconnected. •  Inspect the wiring harness for continuity between variable turbine geometry turbocharger actuator position sensor terminal C and PCM terminal 1BD (vehicle wiring harness side). •  Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between variable turbine geometry turbocharger actuator position sensor terminal C and PCM terminal 1BD. 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 5.
		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 P2588:00 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.