Figure 1. Diagnostic Form Use the following procedure to check the fuel pump pressure. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Section 10.16.1 Purpose The purpose of this check is to determine if fuel pressure is sufficient to start and operate the engine. Note: If… Read More »
Figure 1. Diagnostic Form Use this procedure to troubleshoot the low injection control pressure. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” , above. Section 10.15.1 Purpose The purpose of this procedure is to isolate the cause of low ICP pressure that prevents the engine from starting.… Read More »
Figure 1. Diagnostic Form The injection control pressure troubleshooting as it relates to the hard start/no start problem, follows. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 10.14.1 Purpose The purpose of the ICP system check is to determine if the system is supplying sufficient… Read More »
Figure 1. Diagnostic Form The Engine Cranking RPM check determines if engine cranking speed is high enough to start the engine and confirms that the CMP (Camshaft Position) sensor is functioning properly. For a reproduction of the applicable portion of the diagnostic form, see Figure . “Diagnostic Form” , above. Section 10.13.1 Purpose This… Read More »
Figure 1. Diagnostic Form Sufficient voltage and current is needed to operate the ECM. For a reproduction of the applicable portion of the diagnostic form,see Figure “Diagnostic Form” , above. Section 10.12.1 Purpose The ECM requires 7 volts minimum to operate and drive the injectors. This is an alternate method to be used if the… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the EST Tool Data List. The test must be performed with fully charged batteries. For a reproduction of the applicable portion of the diagnostic form,see Figure “Diagnostic Form” . Section 10.11.1 Purpose The purpose of the EST Data List procedure is to determine if… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Self Test Input (STI) to read faults. See Figure “Diagnostic Form” . Section 10.10.1 Purpose The purpose of the STI is to read faults detected by the ECM if the Electronic Service Tool (EST) is not available, or the EST cannot receive… 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 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 »