P3705

I : Check Secondary Fuel Pump Driver Output Circuits (S/C Only): P3705

I1 : CHECK POWER SUPPLY TO THE SECONDARY FUEL PUMP
1. Disconnect the secondary fuel pump electrical connector, FP003.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between FP003, pin 002 (R) and GROUND.

Is the voltage greater than 10 volts?

Yes
Goto I4

No
Goto I2

I2 : CHECK POWER SUPPLY TO THE SECONDARY FUEL PUMP MODULE
1. Disconnect the secondary fuel pump module electrical connector, CA283.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between CA283, pin 029 (UY) and GROUND.

Is the voltage greater than 10 volts?

Yes
Goto I4

No
REPAIR the circuit between the fuel pump and the battery. This circuit includes fuse 49, the fuel pump relay, and fuse 23. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

I3 : CHECK THE SECONDARY FUEL PUMP RESISTANCE
1. Measure the resistance between pins 002 and 004 of the secondary fuel pump.

Is the resistance less than 2 ohms?

Yes
Goto I4

No
INSTALL a new secondary fuel pump. CLEAR the DTC. TEST the system for normal operation.

I4 : CHECK SIGNAL CIRCUIT TO THE SECONDARY FUEL PUMP FOR OPEN CIRCUIT
1. Measure the resistance between CA283, pin 003 (Y) and FP003, pin 004 (Y).

Is the resistance greater than 5 ohms?

Yes
REPAIR the circuit between CA283, pin 003 (Y) and FP003, pin 004 (Y). For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.

No
INSTALL a new secondary fuel pump module. CLEAR the DTC. TEST the system for normal operation.