Engine Immobiliser System (w/o Smart Key System)

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (w/o Smart Key System): B2784: Antenna Coil Open / Short
B2784 - Antenna Coil Open / Short

DESCRIPTION

The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This signal is amplified by the amplifier, then it is output to the transponder key ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
If the transponder key ECU is replaced, register the key and ECU communication ID Engine Immobiliser System (w/o Smart Key System).

PROCEDURE

1. READ VALUE USING TECHSTREAM (ANTENNA COIL STATUS)

(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) Read the Data List according to the display on the Techstream.

Immobiliser

OK:

On the Techstream screen, the item displays Normal according to the chart above.

NG -- CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - TRANSPONDER KEY AMPLIFIER)

OK -- REPLACE TRANSPONDER KEY ECU Removal

2. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - TRANSPONDER KEY AMPLIFIER)

(a) Disconnect the D47 transponder key ECU connector.

(b) Disconnect the D30 transponder key amplifier connector.

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

Standard Resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT TRANSPONDER KEY AMPLIFIER (POWER SOURCE AND GROUND)

(a) Reconnect the D47 transponder key ECU connector.

(b) Reconnect the D30 transponder key amplifier connector.

Standard Resistance:

Text in Illustration

NG -- REPLACE TRANSPONDER KEY ECU Removal

OK -- REPLACE TRANSPONDER KEY AMPLIFIER Removal