Home Vehicle Interior Theft Deterrent/Keyless Entry ENGINE IMMOBILISER SYSTEM
Last Modified: 11-27-2007 1.6 J
Service Category: Vehicle Interior Section: Theft Deterrent/Keyless Entry
Model Year: 2008 Model: LX570 Doc ID: RM000000W4501QX
Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: DESCRIPTION (2008 LX570)

ID Code Box Power Source Circuit

DESCRIPTION

This circuit provides power to operate the ID code box (immobiliser code ECU).

WIRING DIAGRAM



INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSE (IMB)

(a) Remove the IMB fuse from the engine room relay block.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

IMB fuse

Always

Below 1 Ω

OK

2.

CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY AND BODY GROUND)



(a) Disconnect the E28 box connector.

(b) Measure the resistance and voltage according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

E28-8 (GND) - Body ground

Always

Below 1 Ω

Standard Voltage:

Tester Connection

Condition

Specified Condition

E28-1 (+B) - Body ground

Always

11 to 14 V

OK