Supply +54

Supply +54:

Operation
The positive supply is taken from battery 1 across distribution block 75 to:
- Terminal +30 (230) and then on to terminal 30 of ignition switch relay 21
- To terminal 30 of ignition switch 20.

When the ignition switch is set to the drive position, terminals 30 and 54 of the ignition switch will be interconnected. Power will then be supplied to fuse 31 and to the coil of ignition switch relay 21, and the relay will be energized. The relay contacts will close and power will be supplied across distribution terminal +54 (231) to fuses I - 12 in fuse board 22A, which is located in electrical distribution box 22 behind the glove compartment, and to control unit 238 for the seat-belt tensioners.

ABS fuses (302A) will also be supplied.

Fault-tracing hints
1. Check the battery voltage.
2. Check the terminals of distribution block 75 and terminals +30 (230) and +54 (231).
3. If terminal +30 is live but terminal +54 is not, check that ignition switch relay 21 operates by setting the ignition switch to the "drive" position. Terminal 87 of the relay should then be live.
4. Check the relevant wiring.