Actron 9640 - Manual (Page 109)

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6 – 29
Ford Enhanced (OBD II) Diagnostics
6
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 screen. Perform the
following:
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.
When the vehicle has finished the test,
the DTCs found display on the screen.
If no codes are read, the System Pass
screen is displayed.
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).
Quick Tests ?
` KOER Glow Plug ]
KOER Cyl. Cont.
KOER Switch ~
DTCs Found: 2
Use [ To View DTCs
Write Down Codes
For Reference. ~