DTC B2797: Communication Malfunction No. 1: Procedure

1. Check whether the ignition key being used is near other ignition keys, as shown in the illustration. Also, check whether the key ring is in contact with the key grip.
   Fig 1: Identifying Ignition Keys

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   RESULT
   
   

   Result	Proceed to
   Key is near other keys and/or key ring is in contact with key grip.	A
   Key is not near other keys and key ring is not in contact with key grip.	B

   TEXT ILLUSTRATION
   
   

   *a

   Example:

B → See step   3 

A: Go to next step 

1. Separate the keys from each other or remove the key ring.
2. Clear the DTCs. Refer to DTC CHECK / CLEAR .
3. Insert a key into the ignition key cylinder and remove the key. Repeat for all the other keys of the vehicle.

   OK

   No DTC is output.

NG → See step   3 

OK → END (KEYS WERE POSITIONED TOO CLOSE TO EACH OTHER) 

1. Replace the transponder key amplifier. Refer to REMOVAL .

NEXT: Go to next step 

1. Check that the engine starts.

   OK

   The engine starts.

NG → See step   4 

OK → END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE)