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Boxer54, Toyota Technician
Category: Toyota
Satisfied Customers: 1755
Experience:  ASE Master tech with L1 certification, Toyota Master Diagnostic Technician
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Toyota Sienna: 2002 Sienna. Last week fuel gauge quit working.

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2002 Sienna. Last week fuel gauge quit working. 3 days later the fuel pump quit working. Fuel pump works when powered direct. Relay at EFI and CIR OPN both have 2 hot legs with ignition on. No power to white wire at CIR OPN.
Thank you for trusting us with your questions. On the white wire, are you checking it for power at the relay, or the pump? While cranking the engine?
Customer: replied 4 years ago.

At relay with ignition on but not cranking engine.

Check it while cranking. Most Toyotas will not energize the fuel pump with key on, energizes while cranking and engine running.
Customer: replied 4 years ago.

ok. I found 2 broken wires in harness near fuel pump. repaired those. did not think that i needed to crank engine. will try and check for voltage.

Sounds good, let me know what you find.
Customer: replied 4 years ago.

9.9 volts at engine crank. jumps to 12 very briefly when u stop cranking. i need to put fuel tank back in vehicle and reassemble wiring in engine compartment and will hopefully start.what do u think about the 9.9 volts?

Sounds like you probably have it fixed. The voltage will drop significantly while cranking. However, you could have a weak battery. You may want to have it charged and tested just to be sure.
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