Circuit/System Verification

Ignition ON.
Test for greater than 12 V between the battery positive terminal and negative terminal.
- If 12 V or less
  Refer to Battery Inspection/Test .
- If greater than 12 V
Verify no DTCs set.
- If any DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no DTCs are set
Verify the scan tool Autostop Disable Reason - Stop/Start Select Switch parameter changes between Yes and No when pressing and releasing the Autostop switch.
- If the parameter does not change
  Refer to Circuit/System Testing - Autostop Switch Circuit Malfunction
- If the parameter changes
Verify the Autostop switch indicator turns ON and OFF when pressing and releasing the switch
- If the Autostop switch indicator does not turn ON and OFF
  Refer to Circuit/System Testing - Autostop Switch Indicator Circuit Malfunction
- If the Autostop switch indicator turns ON and OFF
Verify the autostop and autostart functions are functioning properly while operating the vehicle under the conditions for entering a start/stop event.
- If the vehicle does not autostop or autostart
  Observe the scan tool Autostop Disable Reason, Autostop Inhibit, Autostart Inhibit, and Autostart Entry parameters while operating the vehicle under the conditions for entering a start/stop event. These parameters will identify the specific cause for the autostop or autostart disable. Refer to the appropriate subsection and symptom when the cause is identified using the scan tool parameters.
- If the vehicle autostops and autostarts
Verify the infotainment system remains active during a start/stop event.
- If the infotainment system turns off or restarts during a start/stop event.
  Refer to Circuit/System Testing - Stop/Start Capacitor Control Module Malfunction.
- If the infotainment system remains active during a start/stop event
All OK.