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Home >> Cadillac >> 2016 >> CT6 Base, 3.6L Eng VIN S >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> Stop/Start System Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Test for greater than 12 V between the battery positive terminal and negative terminal.
    • If greater than 12 V 
  3. Verify no DTCs set.
    • If no DTCs are set 
  4. Verify the scan tool Stop/Start Select Switch parameter changes between Active and Inactive when pressing and releasing the Auto Stop Mode Switch.
    • If the parameter does not change 

      Refer to Circuit/System Testing - Auto Stop Mode Switch Circuit Malfunction

    • If the parameter changes 
  5. Verify the Auto Stop Mode Switch indicator turns ON and OFF when pressing and releasing the Auto Stop Mode Switch.
    • If the Auto Stop Mode Switch indicator does not turn ON and OFF 

      Refer to Circuit/System Testing - Auto Stop Mode Switch Indicator Circuit Malfunction

    • If the Auto Stop Mode Switch indicator turns ON and OFF 
  6. Verify Battery Sensor Module Battery State Information parameter reads Available.
    • If parameter reads Available
    7. NOTE:

    A vehicle hoist can be used to verify the autostop and autostart operation.

  7. 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 
    1. Observe the scan tool Autostop Disable Reason, Autostop Inhibit Reason, Autostart Inhibit, and Autostart Reason parameters while operating the vehicle under the conditions for entering a start/stop event. Refer to Stop/Start Disable, Inhibit, and Restart Reasons . These parameters will identify the specific cause for the autostop or autostart disable.
    • If the vehicle autostops and autostarts 
  8. 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 - Power Supply Transformer Circuit Malfunction

    • If the infotainment system remains active during a start/stop event 
  9. All OK.
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