ISX CM870 and ISM CM875 Hot Side EGR Valve Troubleshooting Update Instructor Note Scene 01351030 Preparatory Repairs Before in depth troubleshooting and utilizing the troubleshooting trees, perform the following: Review the truck service history to verify repairs looking for repeat issues. Knowledge of previous work could be a key in resolving the concern in a timely manor.

Verify Data on the INSITE Data/Monitor Logger screen with engine off / key on.

Review each parameter to verify that the voltage value is above zero for each parameter we are reading, this will assist in improving the overall diagnostic time.

If the voltage reading is zero and you still have a pressure reading, this is where you will need begin troubleshooting. Through this example, you can see that it is important to utilize the Data/Monitor Logger feature to assist in troubleshooting concerns.

Follow the QuickServe Online troubleshooting trees and make the necessary repairs.

And, as verification, recheck the insite data screen for the correct values.