General
The function of the engine immobilization system is to prevent unauthorized starting of the vehicle. The system is controlled by an immobilization ECU which is located beneath the center console, adjacent to the handbrake. Re-mobilization is achieved via a transponder in the vehicle key, which is read by a transponder coil when the ignition switch is turned to the 'auxiliary' position. The transponder coil is mounted around the ignition switch.
For a detailed description of the engine immobilization system, refer to SECURITY .
Power Distribution
Feed from the positive battery terminal (C0192) is supplied to fusible link 2, fuse 18, and fuse 53 of the passenger compartment fuse box (C0632) on an R wire. Fuse 18 (C0584) provides a constant battery feed to the immobilization ECU (C0059) and the steering column interlock ECU (C2055) on a pair of RY wires.
Fuse 53 (C0583) provides a constant battery feed to the ignition switch (C0099) on an R wire. When the ignition switch is turned to the 'auxiliary' position, current flows across the switch (C0099) to fuse 39 of the passenger compartment fuse box (C0585) on a PB wire. Fuse 39 (C0587) provides an auxiliary ignition feed to the immobilization ECU (C0059) and the steering column interlock ECU (C2055) on a pair of PB wires.
When the ignition switch is turned to the 'ignition' position, current flows across the switch (C0099) to fuse 31 of the passenger compartment fuse box (C0585) on a G wire. Fuse 31 (C0587) provides an ignition feed to the steering column interlock ECU (C2055) on a GB wire.
Fusible link 2 of the passenger compartment fuse box (C0591) provides a constant battery feed to the ignition switch (C0099) on an R wire. When the ignition switch is turned to the 'crank' position, current flows across the switch (C0099) to the immobilization ECU (C0059) on a BY wire.
See also:
• SECURITY