Figure 1. Diagnostic Form Follow this procedure to determine if an intake/air cleaner restriction is excessive. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.8.1 Purpose Often a low power and poor fuel economy complaint is simply due to a dirty air cleaner element. In this… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Self Test Input (STI) to read faults. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.7.1 Purpose The purpose of the STI is to read faults detected by the ECM if the Electronic Service… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Injector Buzz Test. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.6.1 Purpose This test will determine if the injectors are functioning correctly electronically, by energizing each injector in a programmed sequence. The ECM… Read More »
Figure 1. Diagnostic Form Follow these procedures to access the EST — Engine Off Tests. Access Diagnostic Codes menu in the EST and clear all fault codes before performing the Engine Off Tests. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.5.1 Purpose The EST… Read More »
Figure 1. Diagnostic Form To check fault codes, follow this procedure. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.4.1 Purpose The purpose of the EST — Fault Codes check is to determine if the ECM has detected any fault conditions that would cause a hard… Read More »
Figure 1. Diagnostic Form Follow these steps to check for a restriction in the transfer pump. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.3.1 Purpose The purpose of this test procedure is to determine if low fuel pressure is caused by excessive restriction in the… Read More »
Figure 1. Diagnostic Form Follow these steps to diagnose the sufficient fuel/fuel pressure problem. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.2.1 Purpose This procedure will determine if the fuel system is getting sufficient clean fuel at the proper pressure to start and operate the… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the engine oil level check. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.1.1 Purpose The engine oil level check will determine if the crankcase and oil reservoir contain engine oil of sufficient quantity and… Read More »
Record the test data in the actual box of the EST Tool — Data List. If there are any differences between the Specification column and the Actual column, correct as necessary and repeat the checks. Retain this information for future operating analysis. See Figure “Diagnostic Form” . Figure 1. Diagnostic Form Series 40E Troubleshooting Manual… Read More »
Before performing any of the diagnostic procedures, fill in the information requested at the top of the diagnostic forms. Proper information is required. The date, miles and hours are important information for warranty purposes. The engine serial number and vehicle identification number (VIN) are important information for ordering parts and referencing service information. The engine… Read More »