Auto idle stop system indicator (amber) blinks (With Auto Idle Stop System) (2018 2019 2020)

NOTE:  When the 12 volt battery terminals are loose or corroded or an aftermarket electronic device is directly connected to the 12 volt battery negative terminal, the vehicle may wrongly detect the battery deterioration and this symptom may appear. Check for these conditions of the 12 volt battery terminals listed above before you troubleshoot and fix them as needed, then make sure that the indicator goes off when you start up the engine.

1. 12 volt battery check

   -1. Start the engine.

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Idle Stop Inhibit (Battery Deterioration)	INHIBITED

   Do the current condition(s) match the threshold?

   YES 

   Replace the 12 volt battery .

   NO 

   Go to step 2.

2. Starter counter check

   -1. Do the IDLE STOP STARTER COUNTER CHECK in the PGM-FI Function Test Menu with the HDS.

   NOTE: If the number of starter motor operations exceeds the setting limit, auto idle stop is disabled .

   Is the counter more than 275, 000 times?

   YES 

   Replace the starter , starter cut relay 1, and starter cut relay 2. After replacing them, select the IDLE STOP STARTER COUNTER CLEAR in the ADJUSTMENT MENU, and select the STARTER and STARTER CUT RELAY in the IDLE STOP STARTER COUNTER CLEAR, then follow the screen prompts.

   NO 

   Go to step 3.

3. PGM-FI system check

   -1. Select the PGM-FI system with the HDS.

   -2. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting .

   NO 

   Go to step 4.

4. Brake booster pressure monitoring system check

   -1. Select the BRAKE SYSTEM with the HDS.

   -2. Check for DTCs with the HDS.

   DTC Description	DTC

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting .

   NO 

   Go to step 5.

5. A/C system check

   -1. Select the BODY ELECTRICAL system with the HDS.

   -2. Select the HVAC/Climate Control, then check for DTCs with the HDS.

   DTC Description	DTC

   Are any DTCs indicated?

   YES 

   Go to the indicated DTC's troubleshooting .

   NO 

   The auto idle stop system is OK. Do the gauge control module self-diagnostic function .