lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Fuel Rail > < Circuit Opening Relay|Page 2028
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Fuel Pump Relay: Testing and Inspection
Fuel Pump Relay

Fuel Pump Relay Inspection

Checking Relay Continuity

- Remove relay.
- Check for continuity between terminal +B and FP.

Desired - Continuity

- Check for continuity between terminal +B and FPR.

Desired - Continuity

- Check for continuity between terminal +B and PR.

Desired - No continuity

- Replace relay if desired results are not achieved.

Fuel Pump Relay Inspection

Checking Relay Operation

- Apply battery voltage across relay terminals +B and FPR.
- Check for continuity between terminal +B and PR.

Desired - Continuity

- Check for continuity between terminal +B and FP.

Desired - No Continuity

- Replace relay if desired results are not achieved.

Fuel Rail > < Circuit Opening Relay|Page 2028