LS 400 V8-4.0L (1UZ-FE) (1990)
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Ignition Relay: Description and Operation
Ignition Relay Schematic
PURPOSE
The ignition relay controls current flow to both ignition coils and igniters.
LOCATION
Mounted to the ECU under the dash.
OPERATION
Two separate coils activate a single set of contacts. One coil is activated in the START position the other in the IGNITION position. When
activated current is applied to terminal +B of both igniters and to both positive ignition coil terminals.
