Symptom Tree  t099   Printable Version This is symptom tree Cause Correction Engine idle speed is set at either the minimum or the maximum allowable value The…

Symptom Tree  t084   Printable Version This is symptom tree Cause Correction Keyswitch is in the OFF position Turn the keyswitch to the ON position.   Fault…

Symptom Tree  t081   Printable Version This is symptom tree Cause Correction Keyswitch circuit is malfunctioning Check the vehicle keyswitch circuit. Refer to Procedure 019-064.   Engine…

Symptom Tree  t074-010   Printable Version This is symptom tree Cause Correction Batteries are cold Check the battery heater. Refer to the OEM service manual.   Electronic…

Symptom Tree  t074-005   Printable Version This is symptom tree Cause Correction Electronic fault codes active or high counts of inactive fault codes Read the fault codes…

Symptom Tree  t046   Printable Version This is symptom tree Cause Correction Programmable parameters or selected features are not correct Check the programmable parameters and the selected…

Symptom Tree  t036   Printable Version This is symptom tree Cause Correction Engine brake on/off switch is off Turn on the switch.   Programmable parameters or selected…

Symptom Tree  t016   Printable Version This is symptom tree Cause Correction Error 5023: No connection to the ECM was established or detected Refer to Procedure 019-472…

Table of Contents General Information General Information TOC Use the charts on the following pages of this section to aid in diagnosing specific engine symptoms.…

Table of Contents General Information General Information TOC A thorough analysis of the customer’s complaint is the key to successful troubleshooting. The more information known…