Supra L6-2997cc 3.0L DOHC MFI (1998)
Interior Lighting Module: Testing and Inspection
INSPECT INTEGRATION RELAY CIRCUIT
Remove the relay from junction block and inspect the connector on the junction block side, as shown in the chart.
If circuit is as specified, try replacing the relay with a new one.
If the circuit is not as specified, inspect the circuits connected to other parts.