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 10.9.1 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 Electronic Service Tool (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 10.8.1 Purpose… Read More »
Figure 1. Diagnostic Form For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” above. Section 10.7.1 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 or no start condition. Section 10.7.2 Test… Read More »
Figure 1. Diagnostic Form A visual inspection of the intake/exhaust restriction will determine if this component is contributing to a no start or hard start condition. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Note: A high intake or exhaust restriction may cause a considerable amount… Read More »
Figure 1. Diagnostic Form The engine oil level check determines if the crankcase contains engine oil of sufficient quantity and quality to enable the injection control pressure system to function properly. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Section 10.5.1 Test Procedure Follow this procedure… Read More »
The air induction system must be visually inspected. Section 10.4.1 Air Induction System Inspection Follow this procedure to inspect the Air Induction System. Inspect the air cleaner housing externally for damage or distortion that could allow unfiltered air to enter the engine. NOTICE: Unfiltered air leakage into the induction system can cause accelerated engine wear.… Read More »
Figure 1. Diagnostic Form Visually inspect the general condition of the engine and look for obvious causes of hard or no start conditions. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Section 10.3.1 Test Procedure Follow this procedure to visually check the general condition of the… Read More »
Figure 1. Diagnostic Form The sufficient clean fuel procedure determines if the fuel system is getting sufficient clean fuel to start and operate the engine. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Section 10.2.1 Test Procedure Follow this procedure to check for sufficient clean fuel… Read More »
The following pages have supporting information and instructions for the combined Hard Start/No Start diagnostics. Detailed instructions are included on how to perform each test and how to use any specialized equipment. See Figure “Hard Start No/Start Diagnostic Form (Side One)” . See Figure “Hard Start No/Start Diagnostic Form (Side Two)” . Figure 1. Hard… 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 »