The BARO (Barometric Pressure) sensor is a variable capacitance sensor that, when supplied with a 5 volt reference signal from the ECM, produces a linear analog voltage signal that indicates pressure. For the Barometric Pressure Sensor function diagram, See Figure “Barometric Pressure Sensor Function Diagram” . Figure 1. Barometric Pressure Sensor Function Diagram Timing Control… Read More »
The signal functions include the Data Communication Link and the ATA Diagnostic/Programming Link. See Figure “ATA Communications Function Diagram” . Figure 1. ATA Communications Function Diagram Data Communication Link — The signal is a 0 to 5 volt variable width square wave form signal that enables communication between the electronic service tool (EST) and the… Read More »
Follow these procedures to diagnose problems with the sensor or actuator circuits. Section 15.1.1 Basic Procedure The basic diagnostic procedure recommended for most sensor and actuator circuits is to disconnect the harness at the connector and inspect for corrosion, bent pins, spread pins, or any condition that could cause a loose or intermittent connection. See… Read More »
For location of sensors, see Figure “Sensor and Actuator Locations on the Engine” , and see Figure “Sensor and Actuator Locations on the Engine” . 1. Injection Pressure Regulator 4. Injection Control Pressure Sensor 2. Engine Oil Temperature Sensor 5. Engine Oil Pressure Sensor 3. Manifold Absolute Pressure Sensor Figure 1. Sensor and Actuator… Read More »
The Flash Code Circuit Index as listed in Table “Flash Code Circuits” , provides information that is further detailed in sections that follow. Use the Index to find troubleshooting for individual codes. Flash Code PID SID FMI Circuit Index Fault Description 111 - - - ECM No errors detected; Flash Code only 112 168 0… Read More »
This section contains the supporting information for the Electronic Control Diagnostic Form. This section contains the supporting information for the Electronic Control System diagnostic form. It includes engine and vehicle recommended diagnostic procedures, a description of each control circuit’s function and a detailed drawing with specifications for each circuit. The technician can be directed… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Valve Clearance Test. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.17.1 Purpose The purpose of the valve clearance test is to determine if the valve clearance is correct. Section 11.17.2 Test Procedure… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Exhaust Restriction Test. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.16.1 Purpose This test will determine if an excessive restriction exists in the exhaust system that would cause an engine performance problem.… Read More »
Figure 1. Diagnostic Form The following procedure will lead you through the Wastegate Actuator Test. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic Form” . Section 11.15.1 Purpose This procedure will determine the operation of the actuator in conjunction with the turbocharger operation. Section 11.15.2 Test Procedure Follow… Read More »
Figure 1. Diagnostic For Use this procedure to check crankcase pressure. For a reproduction of the applicable portion of the diagnostic form, see Figure “Diagnostic For” . Section 11.14.1 Purpose The purpose of the crankcase pressure test is to measure the power cylinder condition. Section 11.14.2 Test Procedure Follow these steps to test the… Read More »