Adaptive Cruise Control (ACC) Symptom Troubleshooting - ACC combination switch does not work (ACC system is OK) (2017)

ACC combination switch does not work (ACC system is OK) 

1. Gauge control module operation check

   -1. Do the gauge control module self-diagnostic function.

   Is the multi-information display (MID) OK?

   YES 

   Go to step 2.

   NO 

   Replace the gauge control module .

2. ACC combination switch check 1

   -1. Check the parameter(s) below with the HDS pressing the MAIN switch, SET/- switch, RES/+ switch, CANCEL switch, and DISTANCE switch of the ACC combination switch.

   Signal	Current conditions
   	Values	Unit
   MAIN switch
   SET/- switch
   RES/+ switch
   CANCEL switch

   Signal	Current conditions
   	Values	Unit
   DISTANCE switch

   Does it indicate ON when the appropriate switch is pressed, and OFF when the appropriate switch is released?

   YES 

   Go to step 3.

   NO 

   Any of the indicators turned ON and OFF, replace the ACC combination switch .

   NO 

   No indicator turned ON and OFF, go to step 4.

3. Body electrical DTCs check

   -1. Check for body electrical DTCs with the HDS.

   DTC Description	DTC

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting.

   NO 

   Check other related systems (PGM-FI system and VSA system).

4. ACC combination switch check 2

   -1. Test the ACC combination switch.

   Is the switch OK?

   YES 

   Check for poor connections or loose terminals between the gauge control module and the ACC combination switch. If OK, replace the gauge control module .

   NO 

   Replace the ACC combination switch .