Two wires at the sensor connector ?
Vehicle
Connector
Pin
Circuit
E-Series,
Explorer,
F-Super Duty,
Mountaineer,
Mustang
170 Pin
E47
E46
CKP+
CKP
JD1 CHECK THE CKP SENSOR SIGNAL SENT TO THE PCM
Note: The battery should be fully charged and the starting system should be functioning properly.
- Disable the inertia switch.
- Key ON, engine OFF.
- Access the PCM and monitor the RPM PID.
- Crank the engine.
Is the RPM greater than 150 RPM?
Yes
No
The CKP, PCM, and harness are working properly.
The concern is elsewhere. RETURN to Section 3 , Symptom Charts for further direction.
GO to JD2 .
JD6 CHECK FOR SHORT BETWEEN CKP(+) AND CKP(-) IN THE HARNESS
- Key in OFF position.
- PCM connector disconnected.
- Measure the resistance between:
( + ) CKP Sensor Connector, Harness Side
( - ) CKP Sensor Connector, Harness Side
CKP+
CKP-
Is the resistance greater than 10K ohms?
Yes
No
GO to JD7 .
REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.
JD7 CHECK THE CKP CIRCUIT(S) FOR AN OPEN IN THE HARNESS
- Measure the resistance between:
( + ) CKP Sensor Connector, Harness Side
( - ) PCM Connector, Harness Side
CKP-
CKP-
CKP+
CKP+
Are the resistances less than 5 ohms?
Yes
No
GO to JD8 .
REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
×