DTC B15EC: Backup Battery Degradation [01/2018 - ]: Procedure

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG) and wait for 10 seconds.
4. Perform "HEALTH CHECK" and check for current DTCs.

   Refer to HEALTH CHECK [01/2018 - ]

   Result

   Result	Proceed to
   DTC B15EC is output	A
   DTC B15EC is not output	B

Result: 

A 

REPLACE MAYDAY BATTERY (BACK-UP BATTERY). Refer to  REMOVAL [01/2018 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]