System Operation Description: The ECM uses vehicle speed information for the following features: • Cruise control • Fast idle control • Idle speed control •…

System Operation Description: If any of the following conditions have occurred, the injector trim codes should be calibrated: • ECM replacement • Replacement of any…

System Operation Description: Use this procedure under the following situation: Use this procedure if any of the following conditions exist: • The ECM has been…

System Operation Description: The following background information is related to the following procedure: A warning lamp is required for the “Engine Monitoring” feature. The warning…

System Operation Description: Use this procedure under the following situation: • There is an active diagnostic code. • There is an easily repeated diagnostic code…

System Operation Description: Use this procedure under the following situation: The “Two Speed Axle Switch” is suspected of incorrect operation. Two Speed Axle Switch If…

System Operation Description: Use this procedure under the following situation: Use this procedure to determine if the circuit for the torque limit switch is operating…

System Operation Description: If the vehicle tachometer is driven by the ECM the vehicle tachometer will be connected to the ECM through connector J1/P1:38 and/or…

System Operation Description: Use this procedure under the following situation: Use this procedure to determine if the circuit for the starting aid switch is operating…

System Operation Description: Use this procedure under the following situation: Test Step 1. Check the Electrical Connectors and the Wiring A. Thoroughly inspect the ECM…