Table of Contents Initial Check Remove Install Initial Check TOC Connect an electronic service tool to the vehicle datalink. Turn keyswitch ON. Monitor the ambient…

Electronic Engine Controls Tool Number 3377161 Multimeter Used to measure voltage (VDC), resistance (ohms), and current (amps) of electrical circuits. Tool Number 3822608 Weather-Pack Terminal…

View Related Topic ECM – No Communication Troubleshooting Tree   Printable Version Symptoms No communication and engine will not start No communication and engine will start…

Table of Contents General Information Resistance Check Check for Short Circuit to Ground Check for Short Circuit to External Voltage Source General Information TOC The…

Table of Contents Voltage Check Voltage Check TOC Check the power harness ground connection for loose, corroded, or broken connections. SMALL | MEDIUM | LARGE Next  CAUTION  The leads…

Table of Contents Remove Install Remove TOC  WARNING  Do not remove the pressure cap from a hot engine. Wait until the coolant temperature is below…

Table of Contents Resistance Check Check for Short Circuit to Ground Check for Short Circuit from Pin to Pin Check for Short Circuit to External…

Table of Contents General Information Resistance Check Check for Short Circuit to Ground General Information TOC The engine brake ON/OFF switch circuit signals the system…

Table of Contents General Information General Information TOC NOTE: Due to the number of various electronic control module (ECM) configurations, this procedure has been written to…

Table of Contents Initial Check Remove Install Voltage Check Initial Check TOC Turn keyswitch ON while monitoring the fault lamps. The fault lamps must illuminate…