Steering Column Switches: Overview Mercury Monterey VIII

Normal Operation

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD) The SJB receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). When placed in the START position, the ignition switch provides voltage to the SJB on circuit 1522 (DG).

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD) The smart junction box (SJB) receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). When placed in the ACC position, the ignition switch provides voltage to the SJB on circuit 297 (BK/LG).

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD) The smart junction box (SJB) receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). The ignition switch has 5 possible states

1. OFF - No voltage on any circuit to the SJB.
2. RUN/ACC - Voltage on circuit 297 (BK/LG) to the SJB.
3. RUN/START - Voltage on circuit 1044 (WH/YE) to the SJB.
4. START - Voltage on circuit 1522 (DG) to the SJB.
5. RUN - Voltage on circuit 1717 (VT/OG) to the SJB.

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD) The smart junction box (SJB) receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). When the ignition switch is placed in the ACC position, the ignition switch provides voltage to the SJB on circuit 297 (BK/LG).

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD) The smart junction box (SJB) receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). When the ignition switch is placed in the START position, the ignition switch provides voltage to the SJB on circuits 1522 (DG) and 1044 (WH/YE).

The ignition switch receives fused battery voltage from the bussed electrical center (BEC) fuse 64 (20A) circuit 1050 (LG/VT) and fuse 67 (20A) circuit 1118 (RD). The smart junction box (SJB) receives voltage from the ignition switch on circuits 297 (BK/LG), 1044 (WH/YE), 1522 (DG), and 1717 (VT/OG). When the ignition switch is placed in the RUN position, the ignition switch provides voltage to the SJB on circuit 297 (BK/LG), circuit 1044 (WH/YE), and circuit 1717 (VT/OG).

The ignition lock cylinder is the mechanical link to the ignition switch. When the ignition key is placed in the ignition lock cylinder and rotated through the ignition switch positions, the pinion rotates, moving the rack. The rack is attached to the ignition switch actuating rod and moves the ignition switch to the desired position.