Circuit DescriptionThe accelerator position sensor is attached to the accelerator pedal. The accelerator positionsensor sends a signal to the electronic control module (ECM) when the driver pushes on theaccelerator pedal. The accelerator position circuit contains three wires: a +5-VDC supply wire(pin 29), a return ground (pin 19), and a signal wire (pin 30). NOTE: The connector pin letters shown for the accelerator pedal wiring in thesetroubleshooting steps are examples of representative sensors. The connector pin assignmentscan vary with equipment manufacturer, but the base troubleshooting logic will still apply. Component LocationThe accelerator position sensor is located on the accelerator pedal. Shop...

Circuit DescriptionThe accelerator position sensor is attached to the accelerator pedal. The accelerator positionsensor sends a signal to the electronic control module (ECM) when the driver pushes on theaccelerator pedal. The accelerator position circuit contains three wires: a +5-VDC supply wire(pin 29), a return ground (pin 19), and a signal wire (pin 30). NOTE: The connector pin letters shown for the accelerator pedal wiring in thesetroubleshooting steps are examples of representative sensors. The connector pin assignmentscan vary with equipment manufacturer, but the base troubleshooting logic will still apply. Component LocationThe accelerator position sensor is located on the accelerator pedal. Shop...

Circuit DescriptionThe accelerator position sensor is attached to the accelerator pedal. The accelerator positionsensor sends a signal to the electronic control module (ECM) when the driver pushes on theaccelerator pedal. The accelerator position circuit contains three wires: a +5-VDC SUPPLYwire (pin 29), a RETURN ground (pin 19), and a SIGNAL wire (pin 30). NOTE: The connector pin letters shown for the accelerator pedal wiring in thesetroubleshooting steps are examples of representative sensors. The connector pin assignmentscan vary with equipment manufacturer, but the base troubleshooting logic will still apply. Component LocationThe accelerator position sensor is located on the accelerator pedal. Shop...

Circuit DescriptionThe accelerator position sensor is attached to the accelerator pedal. The accelerator positionsensor sends a signal to the electronic control module (ECM) when the driver pushes on theaccelerator pedal. The accelerator position circuit contains three wires: a +5-VDC SUPPLYwire (pin 29), a RETURN ground (pin 19), and a SIGNAL wire (pin 30). NOTE: The connector pin letters shown for the accelerator pedal wiring in thesetroubleshooting steps are examples of representative sensors. The connector pin assignmentscan vary with equipment manufacturer, but the base troubleshooting logic will still apply. Component LocationThe accelerator position sensor is located on the accelerator pedal. Shop...

Circuit DescriptionThe remote throttle pedal provides the driver’s throttle command to the electronic controlmodule (ECM) through the OEM harness and the original equipment manufacturer’s (OEM)interface harness. The ECM uses this signal to determine the fueling command. Component LocationThe remote throttle pedal location varies with each OEM. Refer to the OEM manual. Shop TalkThe throttle position sensor is a potentiometer. The resistance specifications of the throttleposition sensor is as follows:1) Between supply and return = 2000 to 3000 ohms2) Between supply and signal: Released = 1500 to 3000 ohms; depressed = 200 to 1500 Note: If the throttle or throttle position...