DTC P0034:00 [PCM (SKYACTIV-D 2.2)]

id0102j5210000

DTC P0034:00

Compressor bypass solenoid valve control circuit low input

DETECTION CONDITION

•  With the following conditions met, the compressor bypass solenoid valve voltage is less than the specified value for a continuous 5 s when the following conditions are met:

―  Battery positive voltage: 8—20 V

―  0.5 s have elapsed after ignition is 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

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

•  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.

POSSIBLE CAUSE

•  Compressor bypass solenoid valve connector or terminal malfunction

•  Short to ground or open circuit in compressor bypass solenoid valve power supply circuit

―  Short to ground in wiring harness between main relay terminal C and compressor bypass solenoid valve terminal A

―  ENGINE2 15 A fuse malfunction

―  Open circuit in wiring harness between main relay terminal C and compressor bypass solenoid valve terminal A

•  Short to ground in wiring harness between compressor bypass solenoid valve terminal B and PCM terminal 1CO

•  PCM connector or terminal malfunction

•  Open circuit in wiring harness between compressor bypass solenoid valve terminal B and PCM terminal 1CO

•  Compressor bypass solenoid valve malfunction

•  PCM malfunction

DTC P0034:00	Compressor bypass solenoid valve control circuit low input
DETECTION CONDITION	• With the following conditions met, the compressor bypass solenoid valve voltage is less than the specified value for a continuous 5 s when the following conditions are met: ― Battery positive voltage: 8—20 V ― 0.5 s have elapsed after ignition is 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	• Limits the engine torque/limits the maximum engine speed. • 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.
POSSIBLE CAUSE	• Compressor bypass solenoid valve connector or terminal malfunction • Short to ground or open circuit in compressor bypass solenoid valve power supply circuit ― Short to ground in wiring harness between main relay terminal C and compressor bypass solenoid valve terminal A ― ENGINE2 15 A fuse malfunction ― Open circuit in wiring harness between main relay terminal C and compressor bypass solenoid valve terminal A • Short to ground in wiring harness between compressor bypass solenoid valve terminal B and PCM terminal 1CO • PCM connector or terminal malfunction • Open circuit in wiring harness between compressor bypass solenoid valve terminal B and PCM terminal 1CO • Compressor bypass solenoid 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 COMPRESSOR BYPASS SOLENOID VALVE CONNECTOR CONDITION

•  Switch the ignition OFF.

•  Disconnect the compressor bypass solenoid 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 8.

3

INSPECT COMPRESSOR BYPASS SOLENOID VALVE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND

•  Verify that the compressor bypass solenoid valve connector is disconnected.

•  Switch the ignition ON (engine off).

•  Measure the voltage at compressor bypass solenoid valve terminal A (vehicle wiring harness side).

•  Is the voltage B+?

Yes

Go to the next step.

No

Inspect the ENGINE2 15 A fuse.

If the fuse is blown:

•  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and compressor bypass solenoid valve terminal A.

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.

―  Replace the fuse.

If there is no common connector:

―  Repair or replace the wiring harness which is shorted to ground.

―  Replace the fuse.

If the fuse is damaged:

•  Replace the fuse.

If the fuse is normal:

•  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and compressor bypass solenoid valve terminal A.

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 8.

4

INSPECT COMPRESSOR BYPASS SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND

•  Verify that the compressor bypass solenoid valve connector is disconnected.

•  Switch the ignition OFF.

•  Inspect for continuity between compressor bypass solenoid valve terminal B (vehicle wiring harness side) and ground.

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between compressor bypass solenoid valve terminal B and PCM terminal 1CO.

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 8.

No

Go to the next step.

5

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 8.

6

INSPECT COMPRESSOR BYPASS SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT

•  Verify that the compressor bypass solenoid valve connector and PCM connector are disconnected.

•  Inspect the wiring harness for continuity between compressor bypass solenoid valve terminal B (vehicle wiring harness side) and PCM terminal 1CO (vehicle wiring harness side).

•  Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify if there is a common connector between compressor bypass solenoid valve terminal B and PCM terminal 1CO.

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 8.

7

INSPECT COMPRESSOR BYPASS SOLENOID VALVE

•  Inspect the compressor bypass solenoid valve.
(See COMPRESSOR BYPASS SOLENOID VALVE INSPECTION [SKYACTIV-D 2.2])

•  Is the compressor bypass solenoid valve normal?

Yes

Go to the next step.

No

Replace the compressor bypass solenoid valve, then go to the next step.

(See COMPRESSOR BYPASS SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2])

8

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

•  Has DTC P0034:00 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.

9

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 COMPRESSOR BYPASS SOLENOID VALVE CONNECTOR CONDITION • Switch the ignition OFF. • Disconnect the compressor bypass solenoid 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 8.
3	INSPECT COMPRESSOR BYPASS SOLENOID VALVE POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND • Verify that the compressor bypass solenoid valve connector is disconnected. • Switch the ignition ON (engine off). • Measure the voltage at compressor bypass solenoid valve terminal A (vehicle wiring harness side). • Is the voltage B+?	Yes	Go to the next step.
3		No	Inspect the ENGINE2 15 A fuse. If the fuse is blown: • Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and compressor bypass solenoid valve terminal A. 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. ― Replace the fuse. If there is no common connector: ― Repair or replace the wiring harness which is shorted to ground. ― Replace the fuse. If the fuse is damaged: • Replace the fuse. If the fuse is normal: • Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and compressor bypass solenoid valve terminal A. 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 8.
4	INSPECT COMPRESSOR BYPASS SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND • Verify that the compressor bypass solenoid valve connector is disconnected. • Switch the ignition OFF. • Inspect for continuity between compressor bypass solenoid valve terminal B (vehicle wiring harness side) and ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between compressor bypass solenoid valve terminal B and PCM terminal 1CO. 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 8.
4		No	Go to the next step.
5	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.
5		No	Repair or replace the connector, then go to Step 8.
6	INSPECT COMPRESSOR BYPASS SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT • Verify that the compressor bypass solenoid valve connector and PCM connector are disconnected. • Inspect the wiring harness for continuity between compressor bypass solenoid valve terminal B (vehicle wiring harness side) and PCM terminal 1CO (vehicle wiring harness side). • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify if there is a common connector between compressor bypass solenoid valve terminal B and PCM terminal 1CO. 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 8.
7	INSPECT COMPRESSOR BYPASS SOLENOID VALVE • Inspect the compressor bypass solenoid valve. (See COMPRESSOR BYPASS SOLENOID VALVE INSPECTION [SKYACTIV-D 2.2]) • Is the compressor bypass solenoid valve normal?	Yes	Go to the next step.
7		No	Replace the compressor bypass solenoid valve, then go to the next step. (See COMPRESSOR BYPASS SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
8	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 KOEO or KOER self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)]) • Has DTC P0034:00 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])
8		No	Go to the next step.
9	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)])
9		No	DTC troubleshooting completed.