where is the "Main" Relay. - Suzuki Forums: Suzuki Forum Site
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Old 05-31-2019, 03:06 PM   #1 (permalink)
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Default where is the "Main" Relay.

Fuelpump relay tested fine. Still a problem. Not getting power(juice) to the switch half of the fuelpump relay. Thus,no power back to the left rear taillight area,which then goes to the fuelpump.

Both the fuel pump relay and the ECU get power from the "MAIN" relay. One source (of two sources) is from the fuse BOX, obviously only when the key is ON, and not when the key is in the Accy position. 2 pins on the ECU also come from both the fuse box, and the Main relay. I know where the fuse box is. any Idea which fuse supplies that power to the ecu and fuelpump relay? Also,where is the main relay? Is that the one next to the fuelpump relay?

IF I disconnect the hosefrom the pipe that comes from the fuel filter should I see fuel(gas) spraying out? how long should that happen assuming the fuel lines are all empty?

Jim
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1989 Suzuki Sidekick JX. 1.6 L 8V, 2-door, 5 Speed, 4WD, Custom Hardtop, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1995 Suzuki Sidekick JLX. 1.6L 16V, 4-door, 5 Speed, 4WD, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1996 GEO Tracker Basic. Canadian. 1.6L 16V, 4-Door, 5 Speed, 4WD, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1998 Suzuki Carry (RHD),4WD, Diff-Loc, Axle Lock, 4 Speed, Honda Alloy wheels, Bridgestone 175 SR 13's.
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Old 05-31-2019, 03:50 PM   #2 (permalink)
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"is that the one next to the fuel pump relay?
Yes!

Although these pics are from a '92 Tracker 8v (without plastic dash) they may apply. The relays are loose and not in there proper restrained place, however, the photos show the location of the ECM, for any that may stumble on this thread with interest.

https://postimg.cc/5j8ZJjcG
https://postimg.cc/KKvMG1s5
https://postimg.cc/JGx71pw9
https://postimg.cc/TpKG6f9W
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1995 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 3 spd auto, 4wd
1995 Geo Tracker, 2dr convertible/hardtop, 1.6, 16v, 3 spd auto, 4wd
1992 Geo Tracker LSI, 2 dr convertible, 1.6, 8v, 5 spd manual, 4wd
1991 Geo Tracker, 2dr hardtop (TT), 1.6, 8v, 3 spd auto, 4wd
1994 Geo Tracker, 2 dr convertible, 1.6, 8v, 5 spd manual, 4wd

1988 Ford Ranger, p/u, 2.9, 3pd auto


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Old 05-31-2019, 09:58 PM   #3 (permalink)
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Pulled the "Main Relay",put the fuelpump relay back in it's place. Will test this one tomorrow. Both have identical part numbers so exactly the same; that's pretty cool. Might get this puppy running again yet.

Jim
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1989 Suzuki Sidekick JX. 1.6 L 8V, 2-door, 5 Speed, 4WD, Custom Hardtop, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1995 Suzuki Sidekick JLX. 1.6L 16V, 4-door, 5 Speed, 4WD, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1996 GEO Tracker Basic. Canadian. 1.6L 16V, 4-Door, 5 Speed, 4WD, 15X7 wheels, 235/75R/15 Goodyear Wrangler's.

1998 Suzuki Carry (RHD),4WD, Diff-Loc, Axle Lock, 4 Speed, Honda Alloy wheels, Bridgestone 175 SR 13's.
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Old 06-01-2019, 11:22 AM   #4 (permalink)
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The switch half of the fuel pump relay, coming into the relay, is the blue/black wire coming from the F1 fuse, and connects out to the pink/black that runs to the pump. The black/white wire that comes to the fuel pump relay comes from the ig/coil fuse, and connects out to the pink that runs to the ECU as a switched ground.
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