bahoodle

so i have an 09 ls sedan that won't crank and won't star its an automatic so theirs no clutch pedal switch. i jumped the signal to post n it cranks. so now i put everything bac on it to try cranking it at the fuse box with a jumper wire, and it cranks and wont start.. where do i go next? i have the starting system schematic.

jdbaugh1

iTrader: (1)

What did you do before it wouldn't crank/start? Did you take something apart and put it back together? Or did one day it just suddenly quit working for no apparent reason?

bahoodle

it just stopped. i went to go look at it drove it home, it worked. next day i started it like 5 times left it for a minute n it hasn't started since.
i checked the signal wire at fuse box and the green light for the ground seemed pretty dim and doesn't turn from ground to power when you turn the key. i don't know what the automatic is supposed to do but on the manual it turns red when the clutch is depressed, and is a bright green otherwise.

bahoodle

the signal post for the crank relay is dim when i have the crank/run relay plugged in. also the signal post never gets voltage, unlike a manual which has ground then voltage once the clutch is depressed.. im really stumped the car started a few days ago after sitting for a week. the schematic says i have a 5 volt reference at the ignition and im only getting 4 volts, however i get 5 volts at the map sensor and maf sensor.. it looks like the 5v reference comes from the bcm but this is a haynes manual schematic so its not very detailed

bahoodle

cars been sitting for a month.. when the crank/ run relay is plugged in the crank relay looses a strong ground. what would cause this? also the pin at the crank relay gets no signal from the ignition being on. any thoughts on what to check? starter obviously is fine i have an electrical issue either at the ignition switch or between the switch and fuse box, possibly in the fuse box itself?

bahoodle

well i determined that the neutral safety switch is bad. anyone can help me to get it off? bolts r all off but its on their pretty good do i just gotta pop it off with a screwdriver?