how many (and where) ground straps on 5s-fe ?

[fenixus]

hi there,

can somebody list location of all engine/ECU ground wires (to chassis) ?

i was able to locate 4 of them:

a) 2 on passenger side of engine
those black grounds have plastic inline clips for quick detach.
both join together and attach to a chassis bolt by power steering tank.

b) 2 on driver side of engine
both join together and attach to chassis bolt by air cleaner box.

are there more ?

[500KCamry]

Originally Posted by fenixus

hi there,

can somebody list location of all engine/ECU ground wires (to chassis) ?

i was able to locate 4 of them:

a) 2 on passenger side of engine
those black grounds have plastic inline clips for quick detach.
both join together and attach to a chassis bolt by power steering tank.

b) 2 on driver side of engine
both join together and attach to chassis bolt by air cleaner box.

are there more ?

That's all I know about, plus the battery ground that connects to the transmission.

[91MR2quickNA]

The EWD lists these:

EA and EP behind the passenger side headlight
EB behind the driver's side headlight
EC on the engine valve cover (main ECU/sensor ground)

Those are the actual harness grounds.

The other grounds are engine to chassis "free" wires (i.e. not connected to the harness or its junction blocks).

There are 7 grounds in the interior.

I should take a screenshot of the engine bay ground locations.

[fenixus]

Originally Posted by 91MR2quickNA

The EWD lists these:

EA and EP behind the passenger side headlight
EB behind the driver's side headlight
EC on the engine valve cover (main ECU/sensor ground)

Those are the actual harness grounds.

The other grounds are engine to chassis "free" wires (i.e. not connected to the harness or its junction blocks).

There are 7 grounds in the interior.

I should take a screenshot of the engine bay ground locations.

oh wow!

i suspected grounds i listed are just engine grounds, since i haven't seen any of them connecting to harness anywhere. but wasn't sure, since in cars current flows through chassis (i'm slowly getting used to it).

i had no idea there are so many of them. no wonders i may have grounding issues especially that car had front end collision 1.5yrs ago (driver front damage). perhaps body shop didn't pay attention to grounding wire over there, they did a sloppy job (wanted it done cheap paying out of pocket, insurance was not covering).
shortly after their repair i lost 3 bulbs, maybe coincidence, maybe not.

then a few months later i drove into real deep puddle (passenger side) and blew a bunch of fuses in main relay box ...

how do i get to EB ground, do i need to remove head lamp to see it ? or it's visible from under the hood without removing any parts ?

real sample pics would help people, not many realize there is so many harness grounds ! dang i need to check each and every one of them, having some funky electrical problems on my ride.

where is this diagram coming from ? some camrystuff gen4 manual ?

i found only this:
http://www.camrystuff.com/manuals/Gen4/99EWD.pdf

are there others for different years somewhere ?

[91MR2quickNA]

The screenshot is from my 2001 Solara EWD. The ground points are the same in the 1999 Camry EWD (page 38 in the link you provided). As you can see, they are 100% identical to the Solara's ground points. Helps to use the same chassis.

To get to ground EB, you might need to remove the battery and maybe the headlight. Not sure.

If you'd like the 2001 EWD, I can send it to you via email.

[fenixus]

ok cool

yes, it was p.38

PM sent

[91MR2quickNA]

It might also provide you with the correct ECU terminals as I know you were troubleshooting your EGR system and fuel trims.

[fenixus]

thanks for 2001 ewd, i haven't found ecu pin out in it (i think it's in diagnostics fsm di-22, but gen4 camrystuff is outdated). i received ecu wiring schematics from someone having access to Mitchell Repairs. I have pin outs for my demonic (89666-) ECU