Power Supply (+54 Circuit)

"{�+Power Supply (+54 Circuits):

WIRING DIAGRAM

DESCRIPTION OF OPERATION
Positive current is supplied from battery 1 to distribution block 75 and then to:
^ Terminal block 230 and from there to pin 30 on ignition switch relay 21.
^ Crimped connection J18 and from there to terminal 30 on ignition switch 20.

When the ignition switch is turned to the Drive position, a connection is made between terminals 30 and 54 on the ignition switch. Current is then supplied via crimped connection J31 to:
^ Fuse 3 in main fuse box 302a (ABS)
^ Fuse 31 on main fuse board 22a
^ Ignition switch relay 21
The relay contact in ignition switch relay 21 closes and current is supplied via distribution terminal 231 (+54 circuit) to:
^ Fuses 2, 3 and 5-12 on main fuse board 22a behind the glove box.
^ Fuses 3 and 9 in main fuse box 342a in the engine bay.

FAULT DIAGNOSIS HINTS
1. Check the battery voltage.
2. Check the connections on distribution block 75 and the +30(230) and +54(231) terminal blocks.
3. If current is present on the +30 terminal block but not on the +54 terminal block, check that ignition switch relay 21 is in working order by turning the ignition switch to the Drive position. Current should then be present on pin 87 of the relay.
4. Check the relevant wiring harness.