Test Procedure

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KH1 CHECK FOR DTCS

Are DTCs P3401, P3402, P3403 or P3404 present?

Yes	No
GO to KH2.	RETURN to SYMPTOM CHARTS for further direction.

KH2 CYLINDER POWER BALANCE TEST

Carry out the Power Balance Test. Refer to the instruction manual provided by the scan tool manufacturer.

Are all cylinders contributing correctly during the power balance test?

Yes	No
GO to KH3.	CHECK for an engine mechanical or oil flow concern. Refer to the appropriate Service Information to continue diagnosis.

KH3 CHECK THE CYLINDER DEACTIVATION SOLENOID RESISTANCE

Ignition OFF.
Cylinder Deactivation-Cylinder 1 Solenoid connector disconnected.

Measure the resistance between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Component Side	(-) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Component Side
CDC1 - Pin 2	VPWR - Pin 1

Is the resistance between 5 - 14 ohms?

Yes	No
GO to KH4.	INSTALL a new Cylinder Deactivation solenoid. REFER to the Electronic Engine Controls article. Clear the PCM DTCs. REPEAT the self-test.

KH4 CHECK THE CYLINDER DEACTIVATION SOLENOID FOR INTERNAL SHORTS

Measure the resistance between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Component Side	(-)
CDC1 - Pin 2	Ground

Is the resistance greater than 10K ohms?

Yes	No
GO to KH5.	INSTALL a new Cylinder Deactivation solenoid. REFER to the Electronic Engine Controls article. Clear the PCM DTCs. REPEAT the self-test.

KH5 CHECK THE VPWR CIRCUIT FOR AN OPEN

Ignition ON, engine OFF.

Measure the voltage between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Harness Side	(-)
VPWR - Pin 1	Ground

Is the voltage greater than 10.5 V?

Yes	No
GO to KH6.	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.

KH6 CHECK THE CIRCUITS FOR AN OPEN

Ignition OFF.
PCM connector disconnected.

Measure the resistance between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Harness Side	(-) PCM Connector, Harness Side
CDC1 - Pin 2	CDC1 - Pin E3

Is the resistance less than 5 ohms?

Yes	No
GO to KH7.	REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test.

KH7 CHECK THE CIRCUITS FOR A SHORT TO GROUND

Measure the resistance between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Harness Side	(-)
CDC1 - Pin 2	Ground

Is the resistance greater than 10K ohms?

Yes	No
GO to KH8.	REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.

KH8 CHECK THE CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON, engine OFF.

Measure the voltage between:

(+) Cylinder Deactivation-Cylinder 1 Solenoid Connector, Harness Side	(-)
CDC1 - Pin 2	Ground

Is any voltage present?

Yes	No
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test.	GO to KH9.

KH9 CHECK THE FUNCTIONALITY OF THE CYLINDER DEACTIVATION SOLENOID

Ignition OFF.
Remove the cylinder deactivation solenoid. REFER to the Electronic Engine Controls article.

Connect a 5 amp fused jumper wire between the following:

Point A Cylinder Deactivation-Cylinder 1 Solenoid Connector, Component Side	Point B Vehicle Battery
VPWR - Pin 1	Positive terminal

Connect a 5 amp fused jumper wire between the following:

Point A Cylinder Deactivation-Cylinder 1 Solenoid Connector, Component Side	Point B Vehicle Battery
CDC1 - Pin 2	Negative terminal

While holding the cylinder deactivation solenoid, quickly connect and disconnect the jumper wire to the negative battery terminal. The cylinder deactivation solenoid plunger vibration can be felt by hand when connecting the jumper wires.
Repeat as necessary to verify the cylinder deactivation solenoid operation.

Does the cylinder deactivation solenoid plunger activate when the jumpers are connected?

Yes	No
Unable to duplicate or identify the concern at this time. GO to PINPOINT TEST Z .	INSTALL a new Cylinder Deactivation solenoid. REFER to the Electronic Engine Controls article. Clear the PCM DTCs. REPEAT the self-test.