Other Fault Symptoms
OTHER FAULT SYMPTOMSBreak-Out Box
^ For fault symptoms not listed within the Diagnosis By Symptom List, it is recommended that the break-out box is connected and all input and output signals measured.
^ Connect the break-out box and check the ground connectors.
^ Connect the ECM.
^ Check all the signals to and from the ECM.
^ See: System Diagnosis / Diagnostic Charts / Non-Trouble Code Charts / ECM Pinout/Terminal I.D. Charts.