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Quick Test Operation



Quick Test Operation

Quick Test is performed by retrieving KOEO, KOER, and Continuous DTCs.

Special Notes

Before running Quick Test, always perform the necessary visual checks and safety precautions listed below.

Visual Check

- Inspect the air cleaner and inlet ducting.
- Check system wiring harness for proper connections, bent or broken pins, corrosion, loose wires, proper routing, etc.
- Check the PCM, sensors and actuators for physical damage.
- Check the engine coolant for proper level and mixture.
- Check the transmission fluid level and quality.
- Make all necessary repairs before continuing with Quick Test.

Vehicle Preparation

- Perform ALL safety steps required to start and run vehicle tests. Apply parking brake, place shift lever firmly into PARK position (NEUTRAL on manual transmission and all F650/750), block drive wheels, etc.
- Turn off ALL electrical loads-radios, lights, A/C, blower, fans, etc.
- Start engine and bring up to normal operating temperature before running Quick Test.

Quick Test Operation

For a Hard Start/No Start concern or a Performance concern, refer to Section 4A or Section 4B. For all other concerns, refer to the Symptom Charts in Section 3. Quick Test is performed by retrieving KOEO, KOER and Continuous Memory DTC's. If a code is retrieved, you must then go to the appropriate Pinpoint Test. If unable to complete a self test, GO to Pinpoint Test QA.

Key On Engine Off (KOEO) On-Demand Self Test

KOEO On-Demand Self Test

Connect the NGS Tester to the DLC under the dash. Turn off accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- Select VEHICLE & ENGINE SELECTION menu.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOEO ON DEMAND SELF TEST.
- Turn key on.
- Follow operating instructions from the menu.
- Record DTCs and follow appropriate pinpoint test.
- After test, cycle key to off before running other tests or driving vehicle.

If performing repeated self tests, it may be necessary to unplug glow plug relay to keep battery from going dead. Ignore any glow plug codes while glow plug relay is unplugged.

Key On Engine Running (KOER) On-Demand Self Test

KOER On-Demand Self Test

Connect the NGS Tester to the DLC under the dash. Turn off accessories. Turn A/C off. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

Note: Engine will run rough during this test.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- Start engine.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOER ON DEMAND SELF TEST.
- Follow operating instructions from the menu.
- Record DTCs and follow appropriate pinpoint test.
- After test, cycle key to off before running other tests or driving vehicle.

Retrieve/Clear Continuous DTCs

Retrieve/Clear Continuous DTCs

Connect the NGS Tester to the DLC under the dash. Turn off accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select RETRIEVE/CLEAR CONTINUOUS DTCs
- Turn key on.
- Follow operating instructions from the menu.
- Record DTCs and follow appropriate pinpoint test for continuous code diagnostics.
- After test, cycle key to off before running other tests or driving vehicle.
- Continuous DTCs must be cleared after repair is made.

KOEO Injector Electrical Self Test

KOEO Injector Electrical Self Test

Note: If no DTCs are present and the KOEO Injector Electrical Self Test aborts while trying to perform, GO to NA29 .

Connect the NGS Tester to the DLC under the dash. Turn off accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOEO INJECTOR ELECTRICAL SELF TEST.
- Follow operating instructions from the menu.
- Record DTCs and follow appropriate pinpoint test.
- After test, cycle key to off before running other tests or driving vehicle.

KOEO Output State Self Test

KOEO Output State Self Test

Connect the NGS Tester to the DLC under the dash. Turn off accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOEO output state self test.
- Follow special instructions on screen.
- Depress and release accelerator pedal to cycle output state on relays, solenoids, wait to start light, FDCS, EF, CID and TCIL. When the accelerator pedal is pressed for the first time, the glow plug relay will receive a 5 second on-command.
- After test, cycle key to off before running other tests or driving vehicle.

KOER Switch Self Test

KOER Switch Self Test

Connect the NGS Tester to the DLC under the dash. Turn off accessories. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- Start engine.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOER switch self test.
- Follow instructions on screen. After pressing the trigger to start the test, wait 5 seconds before running through the driver-operated controls. The test may also take up to 5 minutes to complete.
- After test, cycle key to off before running other tests or driving vehicle.
- On F-Series 650/750 with an automatic transmission, shift from neutral to drive and back to neutral to validate the neutral switch.
- If the vehicle is not equipped with speed control, ignore DTCs P0565-P0569.

KOER Cylinder Contribution Self Test

KOER Cylinder Contribution Self Test

Connect the NGS Tester to the DLC under the dash. Turn off accessories. Turn A/C off. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- Start engine.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select DIAGNOSTIC TEST MODE.
- Select KOER cylinder contribution self test.
- Follow instructions on screen.
- After test, cycle the key to off before running other tests or driving vehicle.

KOER Glow Plug Monitoring Self Test

KOER Glow Plug Monitoring Self Test

CALIFORNIA (Under 14,000 GVW) and All Excursion

Connect the NGS Tester to the DLC under the dash. Turn off accessories. Turn A/C off. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self test.

Note: When running this self test, battery voltage must not drop below 10 volts or go above 14 volts. Make sure that batteries are OK and the charging system is working properly. If necessary, press the accelerator pedal to maintain specified voltage.

- Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation.
- Using a digital multimeter connected to the battery, monitor voltage. It may be necessary to raise rpm to maintain voltage.
- Start engine.
- Parking brake set, automatic transmission in PARK or manual transmission in NEUTRAL.
- SELECT CORRECT VEHICLE, YEAR and MODEL.
- Select DIAGNOSTIC DATA LINK.
- Select PCM POWERTRAIN CONTROL MODULE.
- Select KOER GLOW PLUG MONITOR SELF TEST.
- Follow instructions on screen.
- Maintain system voltage until test is complete.
- Record DTCs and follow appropriate pinpoint test.
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