Description The boost sensor (figure 5-44) on turbocharged engines measures fluctuations in intake manifold pressure and vacuum that occur as a result of changes in…
The PCM monitors the APP sensors, engine speed, and intake manifold boost pressure as indicated by the boost sensor to energize the solenoid that controls…
Primary Checks 1. Install an ammeter at the controller/relay terminal stud (glow plug side). 2. Connect the Tech 1. Using the Tech 1’s “Glow Plug…
The glow plug relay is located at the rear of the left cylinder head. When commanded by the PCM, the relay contacts close, allowing ignition…
The glow plug system assists in providing the heat required to begin combustion during engine starting at cold ambient temperatures. The glow plugs are heated…
Timing on the 6.5L EFI diesel is dependent on three variables: 1. Injection pump position, as indicated by the cam sensor and disc 2. TDC…
Description The injection timing stepper motor is located on the right side of the injection pump. The motor housing contains two coils that are controlled…
Description The crankshaft sensor is located in the front cover. The sensor is positioned over the crankshaft sprocket and consists of a Hall-effect device and…
Description The optical sensor is located in the fuel injection pump (figure 5-36) and includes the fuel temperature sensor. The optical sensor counts the pulses…
System Operation PCM timing control uses input data from the Accelerator Pedal Position (APP) sensors, intake air temperature sensor, optical sensor, and crankshaft position sensor…