Symptoms - Engine Electrical: Notes

The following steps must be completed before using the symptom diagnostic procedures:

• Perform the Diagnostic System Check - Vehicle before using the symptom diagnostic procedures in order to verify that all of the following are true:
  • There are no DTCs set.
  • The control modules can communicate via the serial data link.
• Review the system descriptions and operations in order to familiarize yourself with the system functions. Refer to one of the following system operations:
  • Battery Description and Operation 
  • Charging System Description and Operation 
  • Electrical Power Management Description and Operation 
  • Starting System Description and Operation