[5th Gen : 08+]: Fuel pump control wire grounded. Normal??
#1
01-05-2021, 07:33 PM
#2
01-05-2021, 08:49 PM
Yes. That’s the wire that powers the fuel pump, so it’s running through the pump motor to ground.
Did you measure the resistance to ground? If so, what was it? I don’t know the spec off hand, but anything less than about 2 ohms could be considered a short to ground (either in the harness or the pump).
If you pull the fuse and use a fused jumper wire from battery positive to the fuel pump side of the circuit, the fuel pump should turn on (key can be off). If it doesn’t turn on, remove the TIPM from its mounts and inspect the DB/OR wire at the connector on the bottom of the TIPM for burned terminals.
Did you measure the resistance to ground? If so, what was it? I don’t know the spec off hand, but anything less than about 2 ohms could be considered a short to ground (either in the harness or the pump).
If you pull the fuse and use a fused jumper wire from battery positive to the fuel pump side of the circuit, the fuel pump should turn on (key can be off). If it doesn’t turn on, remove the TIPM from its mounts and inspect the DB/OR wire at the connector on the bottom of the TIPM for burned terminals.
#3
01-06-2021, 12:37 PM
Yes. That’s the wire that powers the fuel pump, so it’s running through the pump motor to ground.
Did you measure the resistance to ground? If so, what was it? I don’t know the spec off hand, but anything less than about 2 ohms could be considered a short to ground (either in the harness or the pump).
If you pull the fuse and use a fused jumper wire from battery positive to the fuel pump side of the circuit, the fuel pump should turn on (key can be off). If it doesn’t turn on, remove the TIPM from its mounts and inspect the DB/OR wire at the connector on the bottom of the TIPM for burned terminals.
Did you measure the resistance to ground? If so, what was it? I don’t know the spec off hand, but anything less than about 2 ohms could be considered a short to ground (either in the harness or the pump).
If you pull the fuse and use a fused jumper wire from battery positive to the fuel pump side of the circuit, the fuel pump should turn on (key can be off). If it doesn’t turn on, remove the TIPM from its mounts and inspect the DB/OR wire at the connector on the bottom of the TIPM for burned terminals.