STA Signal Circuit [12/2019 - 11/2023]: Procedure

1. Read the values displayed on the GTS when the ignition switch is ON and on (START).

   Powertrain > Engine > Data List 

   Tester Display
   Starter SW

   OK

   GTS Display	Condition	Normal Condition
   Starter SW	Ignition switch ON	OFF
   	Engine START	ON

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - ] 

Result: 

NG 

See step  2

1. Disconnect the ECM connector.
2. Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.
3. Disconnect the engine stop and start ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A83-43 (STA) - 2 (ST relay)	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR