Est Tool — Fault Codes
Figure 1. Diagnostic Form
To check fault codes, follow this procedure. For a reproduction of the applicable portion of the diagnostic form, see Figure
The purpose of the EST — Fault Codes check is to determine if the ECM has detected any fault conditions that would cause a hard start or no start condition.
Before starting this procedure, turn all accessories and the ignition off before connecting the EST tool to the ATA diagnostic connector.
A Diagnostics Flowchart follows: See Figure
Figure 2. Diagnostic Flowchart
Figure 3. Diagnostic Flowchart
Connect the EST to the American Trucking Association (ATA) diagnostic connector. If the engine is installed in a truck, the connector is located on the lower left kick panel inside the cab. Body builders could locate this connector in other places. The screen of the reader should light up as soon as the tool is plugged in. See Figure
“Electronic Service Tool / ATA Connector Location”
1. ATA Connector
Figure 4. Electronic Service Tool / ATA Connector Location
Note: The ATA connector supplies power to operate the EST. The EST will automatically power up as soon as it is plugged into the ATA connector.
Turn the ignition switch to the ON position, but do not start the engine. This will allow the EST to receive data from the electronic control components. Press enter for NAVPAK menu. The information received will be data showing the current status of the engine. See Figure
Figure 5. MPSI Pro-Link
To access the fault codes, press the FUNC key to switch to the main menu. See Figure
Figure 6. Main Menu
From the main menu press the ↓ arrow down key to select Diagnostic Codes. The selection will have the ↑↓ symbol on the screen, indicating there are other selections available. By pressing the ↓ key, the other selections will display on the screen. Press ↓ key until Diagnostic Codes displays on the screen.
Next press enter. You are now in the diagnostic codes selection of the tool. From this point, diagnostic codes can be accessed. See Figure
Figure 7. Diagnostic Codes
The first option that will appear is ACTIVE CODES. By selecting this option, the fault codes that have been detected on the current (ignition) key ON cycle will be displayed.
Press enter. If there are any active codes, the first one will appear on the screen along with a description of the code. The number in the upper left hand corner represents the Flash Code number. This flash code number is referenced on the electronic diagnostic form. The numbers at the bottom of the screen represent the SAE codes. Press ↓ key to access the additional codes. If there are not any codes active, EMPTY will display on the screen. See Figure
Figure 8. Active Codes
To access Inactive Codes press the FUNC key. This will access the last prior menu selection. Then press the ↓ key to select INACTIVE CODES. Press the enter key. See Figure
Figure 9. Inactive Codes
Inactive codes are faults that have occurred in the previous (ignition) key ON cycles and are now stored in memory. An active code will become an inactive code when the ignition (key) is shut off.
Record all fault codes and refer to Electronic Diagnostics Form.
Note: All current fault codes must be repaired and cleared before proceeding with further diagnostic testing.
ECM detectable faults that will cause this condition are:
- Camshaft position (CMP) sensor inactive faults
- Injection pressure regulator (IPR) output circuit check fault
Pro-Link 9000, J 38500–100
If fault codes are set, refer to Electronic Diagnostic form and the fault code diagnostics.Refer to “10.1 Introduction”
|Series 40E Troubleshooting Manual – 6SE241|
|Generated on 10-13-2008|