B2796

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM (w/o Smart Key System): B2796,B2798: No Communication in Immobiliser System
B2798 - Communication Malfunction No. 2

DESCRIPTION

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





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* If the transponder key ECU assembly is replaced, register the key and ECU communication ID Engine Immobiliser System (W/O Smart Key System).
* If the key is replaced, register the key Engine Immobiliser System (W/O Smart Key System).

PROCEDURE

1. READ VALUE USING TECHSTREAM

(a) Connect Techstream to the DLC3.

(b) Turn the ignition switch to the ON position.

(c) Turn the tester on.

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

(e) Read the Data List according to the display on the tester.

Immobiliser:





OK:

UNSET (Ignition switch ON) appears on the screen.

OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY
NG -- Continue to next step.

2. CHECK KEYS

(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.

OK -- RE-REGISTER OR REPLACE KEY THAT CANNOT START ENGINE
NG -- Continue to next step.

3. CHECK TRANSPONDER KEY AMPLIFIER

(a) After replacing the transponder key amplifier Removal with a normally functioning amplifier, check that the engine starts.

OK:

The engine starts.

NG -- REPLACE TRANSPONDER KEY ECU ASSEMBLY

OK -- END