Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.

NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

NOTE:

If a carbon pile tester is available, refer to With Carbon Pile Tester section. Otherwise, refer to Without Carbon Pile Tester section.

With Carbon Pile Tester

Ignition Off
Connect a carbon pile tester to the C1 Battery.
Engine running and all accessories OFF. Observe the voltage reading on the tester and the Body Control Module Battery Voltage parameter in the Electric Power Management Data list. The voltage should read between 12.6-15.5 V.
Adjust the carbon pile tester so that the Body Control Module Battery Current Sensor parameter in the Electric Power Management Data list is reading 120 A.
Verify the voltage reading remains between 12.6-15.5 V.
- If not within the specified range
  Replace the component: K59 Starter/Generator Control Module
- If within the specified range
All OK.

Without Carbon Pile Tester

Engine running.
Verify the scan tool Engine Control Module Ignition 1 Signal parameter continually increases and decreases when controlling the Engine Control Module 14 V Power Module Setpoint up and down with a scan tool. It may take up to 10 s for the battery voltage to stabilize between each setpoint change.
- If the battery voltage does not continually increase
  Replace the K59 Starter/Generator Control Module.
- If the battery voltage continually increases
All OK.