DTC B2780: Push Switch / Key Unlock Warning Switch Malfunction [08/2015 - ]: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

NEXT: Go to next step 

1. Perform "DTC Output Confirmation Operation" procedure.
2. Check for DTCs. Refer to DTC CHECK / CLEAR [08/2015 - ] .

   OK

   DTC B2780 is not output.

   Result

   Result	Proceed to
   DTC B2780 is output	A
   DTC B2780 is not output	B

B → See step   7 

A: Go to next step 

1. Remove the unlock warning switch assembly. Refer to REMOVAL [08/2015 - ] .

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2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1 - 2	Pushed (Key set)	Below 1 Ω
   1 - 2	Free (Key removed)	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Unlock Warning Switch Assembly)
   *b	Free
   *c	Pushed

NG → See step   6 

OK: Go to next step 

1. Disconnect the I19 transponder key ECU assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   I19-3 (KSW) - I33-1 (UN+)	Always	Below 1 Ω
   I19-3 (KSW) or I33-1 (UN+) - Body ground	Always	10 kΩ or higher
   I33-2 (UN-) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5