B2796

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM:

B2796 - No Communication in Immobiliser System

B2798 - Communication Malfunction No. 2

DESCRIPTION

These DTCs are stored if a key that does not have a transponder chip is inserted into the ignition key cylinder or if communication between the key and the transponder key ECU assembly is impossible.





INSPECTION PROCEDURE

NOTICE:
* If the transponder key ECU assembly is replaced, register the key and ECU communication ID Programming and Relearning.
* If the key is replaced, register the key Programming and Relearning.

PROCEDURE

1. READ VALUE USING TECHSTREAM (IMMOBILISER)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Immobiliser / Data List.

(e) According to the display on the Techstream, read the Data List.

Immobiliser





OK:

On the Techstream screen, the item changes between Unset and Set according to the chart above.

NG -- CHECK KEY

OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal

2. CHECK KEY

(a) Insert the vehicle's other key into the ignition key cylinder.

(b) Check that the engine starts with this key.

OK:

The engine starts.

NG -- REPLACE TRANSPONDER KEY AMPLIFIER
OK -- Continue to next step.

3. RE-REGISTER KEY

(a) Re-register the original key Programming and Relearning.

NEXT -- Continue to next step.

4. CHECK ENGINE START

(a) Check that the engine starts.

OK:

The engine starts.

NG -- REPLACE KEY

OK -- END (KEY WAS NOT REGISTERED CORRECTLY)

5. REPLACE TRANSPONDER KEY AMPLIFIER

(a) Replace the transponder key amplifier Removal.

NEXT -- Continue to next step.

6. CHECK ENGINE START

(a) Check that the engine starts.

OK:

The engine starts.

NG -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal

OK -- END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE)