Test Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Ford RV Cutaway, 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.

AP1 PRELIMINARY DIAGNOSIS FOR DIAGNOSTIC TROUBLE CODE (DTC) P2289

Retrieve and record all DTCs.
Record the freeze frame data.
Clear the DTCs.
Carry out the self-test.

Is DTC P2289 present?

Yes	No
GO to AP2.	UNABLE to duplicate the condition. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary. REFER to SYMPTOM CHARTS , if a driveability concern exists.

AP2 DIAGNOSTIC TROUBLE CODE (DTC) P2289

Possible causes:
- biased ICP sensor
- open SIGRTN circuit
- signal circuit shorted to voltage
- PCM
Key in OFF position.
ICP Sensor connector disconnected.
PCM connector disconnected.

Measure the resistance between:

( + ) ICP Sensor Connector, Harness Side	( - ) PCM Connector, Harness Side
SIGRTN - Pin 1	SIGRTN - Pin E25

Is the resistance less than 5 ohms?

Yes	No
GO to AP3.	REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.

AP3 CHECK THE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE

Key ON, engine OFF.

Measure the voltage between:

( + ) ICP Sensor Connector, Harness Side	( - )
ICP - Pin 3	Ground

Is any voltage indicated?

Yes	No
REPAIR the short circuit. CLEAR the DTCs. REPEAT the self-test.	GO to AP4.

AP4 CHECK THE ICP SENSOR

Key in OFF position.
ICP Sensor connector connected.
PCM connector connected.
Key ON, engine OFF.
Access the PCM and monitor the ICP_V PID.

Is the voltage between 0.15 - 0.35 V?

Yes	No
GO to AP5.	INSTALL a new ICP sensor. CLEAR the DTCs. REPEAT the self-test.

AP5 CHECK FOR CORRECT PCM OPERATION

Disconnect all the PCM connectors.
Visually inspect for:
- pushed out pins
- corrosion
Connect all the PCM connectors and make sure they seat correctly.
Carry out the PCM self-test and verify the concern is still present.

Is the concern still present?

Yes	No
INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.