No power to the fuel pump
02-14-20, 05:56 PM
#16
Moderator
Check voltage at [E] and move sequentially down to the fuel pump. There are two relays in the path. If there is a break then check that the primary side of the relay coil is being energized.
Salim
Salim
03-21-24, 11:54 AM
#18
Moderator
The problem is not generic and it needs to be diagnosed with the help of the attached circuit diagram .. thanks to @Margaret
Best is to trace back from the pump for 12v. Keep in mind it is not constant [modulated on/off ... in case of an accident the pump is cutoff]. Bringing the key closer or opening the door to enter is a signal for the ECU to turn on the pump to prime up the pump.
Share with us what you find out and we can suggest what else to test/check.
Salim
Best is to trace back from the pump for 12v. Keep in mind it is not constant [modulated on/off ... in case of an accident the pump is cutoff]. Bringing the key closer or opening the door to enter is a signal for the ECU to turn on the pump to prime up the pump.
Share with us what you find out and we can suggest what else to test/check.
Salim
Thread
Thread Starter
Forum
Replies
Last Post
xsc2003
LS - 1st and 2nd Gen (1990-2000)
2
12-12-08 08:16 AM