DTC P0628:00 [PCM (SKYACTIV-D 2.2)]

id0102j5148600

DTC P0628:00

Suction control valve circuit low input

DETECTION CONDITION

•  With the following conditions met, a condition has continued for 1 s in which the suction control valve control current is 1.0 A or less or the control voltage is more than the specified value.

―  Battery voltage: 8—16 V

―  0.5 s have elapsed after ignition is switched ON (engine on)

―  Suction control valve control duty value: 100 %

―  The following DTCs are not detected

•  Suction control valve: P0629:00

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

•  Limits the engine torque/limits the maximum engine speed.

•  Inhibits the automatic diesel particulate filter regeneration control.

•  Inhibits the intake shutter valve control.

•  Inhibits the manual diesel particulate filter regeneration control.

•  Inhibits the EGR control.

•  Stops the G-vectoring control (GVC).

•  Limits the engine transaxle total control.

•  Inhibits engine-stop by i-stop control.

POSSIBLE CAUSE

•  Suction control valve connector or terminal malfunction

•  PCM connector or terminal malfunction

•  Short to ground in wiring harness between the following terminals:

―  Suction control valve terminal A and PCM terminal 1CC

―  Suction control valve terminal B and PCM terminal 1BY

•  Short to ground in each wiring harness of suction control valve

•  Suction control valve malfunction

•  PCM malfunction

DTC P0628:00	Suction control valve circuit low input
DETECTION CONDITION	• With the following conditions met, a condition has continued for 1 s in which the suction control valve control current is 1.0 A or less or the control voltage is more than the specified value. ― Battery voltage: 8—16 V ― 0.5 s have elapsed after ignition is switched ON (engine on) ― Suction control valve control duty value: 100 % ― The following DTCs are not detected • Suction control valve: P0629:00 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	• Limits the engine torque/limits the maximum engine speed. • Inhibits the automatic diesel particulate filter regeneration control. • Inhibits the intake shutter valve control. • Inhibits the manual diesel particulate filter regeneration control. • Inhibits the EGR control. • Stops the G-vectoring control (GVC). • Limits the engine transaxle total control. • Inhibits engine-stop by i-stop control.
POSSIBLE CAUSE	• Suction control valve connector or terminal malfunction • PCM connector or terminal malfunction • Short to ground in wiring harness between the following terminals: ― Suction control valve terminal A and PCM terminal 1CC ― Suction control valve terminal B and PCM terminal 1BY • Short to ground in each wiring harness of suction control valve • Suction control valve malfunction • PCM malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED 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

INSPECT SUCTION CONTROL VALVE CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect suction control valve connector.

•  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 7.

3

INSPECT PCM CONNECTOR CONDITION

•  Disconnect the PCM connector.

•  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 7.

4

INSPECT SUCTION CONTROL VALVE CIRCUIT FOR SHORT TO GROUND

•  Verify that the suction control valve connector and PCM connector are disconnected.

•  Inspect for continuity between the following terminals (vehicle wiring harness) and body ground.

―  Suction control valve terminal A

―  Suction control valve terminal B

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  Suction control valve terminal A and PCM terminal 1CC

•  Suction control valve terminal B and PCM terminal 1BY

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 Step 7.

No

Go to the next step.

5

INSPECT EACH WIRING HARNESS IN SUCTION CONTROL VALVE CIRCUIT FOR SHORT CIRCUIT

•  Verify that the suction control valve connector and PCM connector are disconnected.

•  Switch the ignition OFF.

•  Inspect for continuity between suction control valve terminals A and B (wiring harness side).

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  Suction control valve terminal A and PCM terminal 1CC

•  Suction control valve terminal B and PCM terminal 1BY

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 7.

No

Go to the next step.

6

INSPECT SUCTION CONTROL VALVE

•  Inspect the suction control valve.
(See SUCTION CONTROL VALVE INSPECTION [SKYACTIV-D 2.2])

•  Is the suction control valve normal?

Yes

Go to the next step.

No

Replace the suction control valve, then go to the next step.

(See SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

7

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all the disconnected connectors.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
(See CLEARING DTC [PCM (SKYACTIV-D 2.2)])

•  Perform the KOER self-test.
(See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)])

•  Has DTC P0628:00 been recorded?

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.

8

VERIFY OTHER DTCs

•  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.

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED 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	INSPECT SUCTION CONTROL VALVE CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect suction control valve connector. • 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.
2		No	Repair or replace the connector, then go to Step 7.
3	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • 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.
3		No	Repair or replace the connector, then go to Step 7.
4	INSPECT SUCTION CONTROL VALVE CIRCUIT FOR SHORT TO GROUND • Verify that the suction control valve connector and PCM connector are disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness) and body ground. ― Suction control valve terminal A ― Suction control valve terminal B • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • Suction control valve terminal A and PCM terminal 1CC • Suction control valve terminal B and PCM terminal 1BY 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 Step 7.
4		No	Go to the next step.
5	INSPECT EACH WIRING HARNESS IN SUCTION CONTROL VALVE CIRCUIT FOR SHORT CIRCUIT • Verify that the suction control valve connector and PCM connector are disconnected. • Switch the ignition OFF. • Inspect for continuity between suction control valve terminals A and B (wiring harness side). • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • Suction control valve terminal A and PCM terminal 1CC • Suction control valve terminal B and PCM terminal 1BY 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 7.
5		No	Go to the next step.
6	INSPECT SUCTION CONTROL VALVE • Inspect the suction control valve. (See SUCTION CONTROL VALVE INSPECTION [SKYACTIV-D 2.2]) • Is the suction control valve normal?	Yes	Go to the next step.
6		No	Replace the suction control valve, then go to the next step. (See SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)]) • Perform the KOER self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)]) • Has DTC P0628:00 been recorded?	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])
7		No	Go to the next step.
8	VERIFY OTHER DTCs • 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)])
8		No	DTC troubleshooting completed.