DTC B2796: No Communication in Immobiliser System; DTC B2798: Communication Malfunction No. 2: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Immobiliser / Data List.
5. Read the Data List according to the display on the Techstream.
   IMMOBILISER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Immobiliser	Immobiliser system status/SET or UNSET	UNSET: Ignition switch ON SET: Without key	-

   OK

   On the Techstream screen, the item changes between UNSET and SET according to the chart above.

NG → See step   2 

OK → See step   6 

1. Insert the vehicle's other key into the ignition key cylinder.
2. Check that the engine starts with this key.

   OK

   The engine starts.

NG → See step   5 

OK: Go to next step 

1. Re-register the original key. Refer to REGISTRATION .

NEXT: Go to next step 

1. Check that the engine starts.

   OK

   The engine starts.

NG → REPLACE KEY 

OK → END (KEY WAS NOT REGISTERED CORRECTLY) 

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   6 

OK → END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE)