Immobilisation ECU – 300 Tdi Only

Immobilisation ECU – 300 Tdi Only

The immobilisation ECU (C0059) receives an ignition feed via fuse 12 of the passenger compartment fuse box (C0580) on a WG then B wire, and is earthed on a B wire.

When the ignition switch is turned to the 'ignition' position, the anti-theft alarm ECU (C1979 on LHD, C0061 on RHD) provides a coded digital signal to the immobilisation ECU (C0059) on a LGS then B wire. When the ignition switch is turned to the 'crank' position, the immobilisation ECU (C0059) receives a feed from the starter relay (C0151) on an NR then B wire. If the coded signal from the anti-theft alarm ECU has been accepted, the immobilisation ECU will provide a feed to the following on B wires:

The fuel cut-off solenoid (C0198) The starter motor (C0179) The glow plug ECU (C0190).

Diagnostic Socket

The engine immobilisation system can be interrogated using TestBook via the diagnostic socket. The diagnostic socket (C0040) is connected to the anti-theft alarm ECU (C1979 on LHD, C0061 on RHD) by an LG wire.