Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS1999RX 300 AWD V6-3.0L (1MZ-FE)REPAIR AND DIAGNOSISPOWER AND GROUND DISTRIBUTIONFUSE BLOCKTESTING AND INSPECTION
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)
Fuse Block: Testing and Inspection
1999 Lexus RX 300 AWD V6-3.0L (1MZ-FE)SECTION Testing and Inspection
INSPECT ENGINE ROOM JUNCTION BLOCK CIRCUIT
a. Remove the fuse from the junction block and inspect the connection on the junction block side.
If the circuit is as specified, inspect the circuits connected to other parts.
b. Remove the relay from the junction block and inspect the connector on the junction block side.
If the circuit is as specified, inspect the circuits connected to other parts.
INSPECT INSTRUMENT PANEL JUNCTION BLOCK CIRCUIT
a. Remove the fuse from the instrument panel junction block and inspect the connector on the junction block side.
b. Remove the relay from the instrument junction block and inspect the connector on the junction block side.
If the circuit is as specified, inspect the circuit connected to other parts.
a. Remove the fuse from the junction block and inspect the connection on the junction block side.
If the circuit is as specified, inspect the circuits connected to other parts.
b. Remove the relay from the junction block and inspect the connector on the junction block side.
If the circuit is as specified, inspect the circuits connected to other parts.
INSPECT INSTRUMENT PANEL JUNCTION BLOCK CIRCUIT
a. Remove the fuse from the instrument panel junction block and inspect the connector on the junction block side.
b. Remove the relay from the instrument junction block and inspect the connector on the junction block side.
If the circuit is as specified, inspect the circuit connected to other parts.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.