Ford Enhanced (OBD II) Diagnostics

KOER Glow Plug

The KOER Glow Plug is an on-demand test which activates the glow plug relay and detects any difference in the amount of current between both banks of glow plugs. DTCs returned from the test indicate which bank has failed glow plugs or failed wiring.

Exhaust gases are harmful or FATAL. Always operate vehicle in a well-ventilated area.

The KOER glow plug test is done with the engine running. Do not over-rev engine. Observe all safety precautions.

Battery Voltage must be between 11.8 and 14.0 volts for the Glow Plug Test. To maintain battery voltage, increase engine RPM. If required, monitor battery voltage during the test using a voltmeter.

Select KOER Glow Plug from the

Quick

Tests

 

?

` KOER

Glow

Plug

]

Quick Tests screen. Perform the

KOER

Cyl.

Cont.

 

following:

 

KOER

Switch

~

 

1)Set Parking Brake.

2)Transmission In Park Or Neutral.

3)Turn A/C Off.

4)Start Engine — Let Idle Until Hot.

5)Turn Ign Key Off.

6) Wait 10 Seconds. Start Engine — Let Idle.

 

 

 

 

6

 

 

 

 

 

 

When the vehicle has finished the test,

DTCs

 

Found: 2

 

 

 

 

 

the DTCs found display on the screen.

 

 

 

Use

[

To

View

DTCs

If no codes are read, the System Pass

screen is displayed.

Write

Down

Codes

 

For

Reference.

~

 

Use UP/DOWN arrow keys to view

Codes.

Press the FUNC key to return to the Ford Function List or BACK to return to the Quick Tests screen.

KOER Cyl. Cont.

The KOER Cyl. Cont. is an on-demand test performed with the engine running, the A/C OFF and engine oil temperature above 76.6C (170°F). This test determines that all cylinders are contributing equally to engine performance.

The PCM first tests the cylinders in numeric order (1 – 8) for a bad/weak cylinder. If all cylinders check good, a 4 cylinder test is then executed (if a weak cylinder is detected in the 8 cylinder test, the four cylinder test will not be started).

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Actron 9640 user manual Koer Glow Plug, ` Koer, Koer Cyl

9640 specifications

The Actron 9640 is a distinguished automotive diagnostic tool that has garnered attention for its versatility and user-friendly design. Designed for professional mechanics and DIY enthusiasts alike, the Actron 9640 stands out for its comprehensive features and advanced technologies that simplify vehicle diagnostics.

One of the main features of the Actron 9640 is its ability to read and erase diagnostic trouble codes (DTCs) for a wide variety of vehicles. This tool supports OBD II protocols, allowing it to communicate with a vast array of vehicles produced after 1996. The device provides clear, detailed descriptions of any trouble codes, enabling users to quickly identify and address issues. This is vital for efficient troubleshooting and ensures that users can make informed decisions about repairs.

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