Test Procedures

WARNING: This page is about a different variant/trim than selected.

JD1 CHECK THE CKP SENSOR SIGNAL TO THE PCM

NOTE: With electronic throttle control (ETC), erroneous ignition and ETC-related DTCs may be set due to salt water intrusion into the crankshaft position (CKP) sensor harness connector. These DTCs are set in the following combination:

P0320, P0351, and P2106 .

Thoroughly clean the connector, pack with di-electric grease and retest. If the problem returns, continue the CKP sensor diagnosis.

Battery fully charged and starting system functioning properly.
Key in ON position.
Access the PCM and monitor the RPM PID.
Crank the engine using the engine cranking diagnostic mode. Refer to DIAGNOSTIC MODES .

Is the engine speed between 900 - 1,200 RPM?

Yes	No
The CKP, PCM, and harness are working properly. Concern is elsewhere. RETURN to SYMPTOM CHARTS - HYBRID ESCAPE for further direction.	Key in OFF position. GO to JD2.

JD2 CHECK THE TIMING COVER, CKP SENSOR, AND CRANKSHAFT PULSE WHEEL FOR OBVIOUS PHYSICAL DAMAGE

Visually check the timing cover, CKP sensor, and crankshaft pulse wheel (outside the timing cover) for obvious physical damage.

Do any parts appear physically damaged?

Yes	No
REPAIR or INSTALL a new component as necessary.	GO to JD3.

JD3 CHECK FOR PROPER CKP BIAS VOLTAGES IN THE PCM

CKP Sensor connector disconnected.
Key in ON position.

Measure the voltage between:

( + ) CKP Sensor Connector, Harness Side	( - ) Vehicle Battery
CKP+ - Pin 1	Negative terminal
CKP- - Pin 2	Negative terminal

Are the voltages between 1 V - 3 V?

Yes	No
Key in OFF position. GO to JD4.	Key in OFF position. GO to JD6.

JD4 CHECK THE CKP SENSOR RESISTANCE

NOTE: The CKP sensor resistance values change significantly with temperature rise.

Measure the resistance between:

( + ) CKP Sensor Connector, Component Side	( - ) CKP Sensor Connector, Component Side
CKP+ - Pin 1	CKP- - Pin 2

Is the resistance between 250 ohms - 1K ohms?

Yes	No
GO to JD5.	INSTALL a new CKP sensor.

JD5 CHECK THE CKP HARNESS SHIELD GROUND

NOTE: The harness shield protects the CKP signal from electrical noise and is grounded at one end, typically near the PCM.

NOTE: Carry out the following resistance measurement between the CKP shield and the chassis ground.

Measure the resistance between:

( + ) CKP_SHLD Assembly Connector, Harness Side	( - )
CKP_SHLD	Ground

Is the resistance less than 5 ohms?

Yes	No
GO to JD6.	REPAIR the open circuit. CHECK for a poor ground connection.

JD6 CHECK FOR A SHORT BETWEEN THE CKP(+) AND CKP(-) IN THE HARNESS

PCM connector disconnected.

Measure the resistance between:

( + ) CKP Sensor Connector, Harness Side	( - ) CKP Sensor Connector, Harness Side
CKP+ - Pin 1	CKP- - Pin 2

Is the resistance greater than 10K ohms?

Yes	No
GO to JD7.	REPAIR the short circuit.

JD7 CHECK THE CKP CIRCUIT(S) FOR AN OPEN IN THE HARNESS

PCM connector disconnected.

Measure the resistance between:

( + ) CKP Sensor Connector, Harness Side	( - ) PCM Connector, Harness Side
CKP- - Pin 2	CKP- - Pin E45
CKP+ - Pin 1	CKP+ - Pin E34

Are the resistances less than 5 ohms?

Yes	No
GO to JD8.	REPAIR the open circuit.

JD8 CHECK THE CKP CIRCUIT FOR A SHORT TO POWER IN THE HARNESS

Key in ON position.

Measure the voltage between:

( + ) PCM Connector, Harness Side	( - ) Vehicle Battery
CKP+ - Pin E34	Negative terminal
CKP- - Pin E45	Negative terminal

Is any voltage present?

Yes	No
Key in OFF position. REPAIR the short circuit to PWR.	Key in OFF position. GO to JD9.

JD9 CHECK THE CKP CIRCUIT(S) FOR A SHORT TO GROUND IN THE HARNESS

Measure the resistance between:

( + ) CKP Sensor Connector, Harness Side	( - ) Vehicle Battery
CKP+ - Pin 1	Negative terminal
0CKP- - Pin 2	Negative terminal

Are the resistances less than 10K ohms?

Yes	No
REPAIR the short circuit.	INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .