heating relay circuit problem

307sw 1.6Hdi 2004

Hi,
Following on from all the other problems that I have had with this car (if
you have seen my ealier posts). Today I took my car into the garage to have
the latest software installed and everything seemed to be fixed when I drove
the car out but 1 mile down the road the engine warning light came back on
and the power dropped again. I took the car striaght back to the Peugeot
garage and he checked the error for me. P1352 - Pre/Post Heating Relay
Circuit Error. He was unable to cancel this error so I am told that there
must be something wrong but the garage were not willing to look into it
without charging by the hour. The only advise he could give was to change
all the Glow plugs. 'That might do it'. Before I spend good money after bad
I was wondering if anybody else has had a similar problem and been able to
sort it out.

 

Not sure that I would change the glow plugs just yet, especially as this
time of year I doubt they are even being used.
On my 406 and partner van which are both HDI, I don't even see the pre-heat
light come on until it gets pretty cold in the mornings around November time
and then its only for a few seconds.
Not sure if it works on Peugeots but on older Fords you could unplug the
battery for 30 minutes and it would re-set the engine warning lights. Might
be worth a try and see if it comes back on again with the same fault.
GGJ



..

 

Check your earth straps, and the wires from the re-lay box. as my 405
started to play up showing all kind of lights and what we found out
that the earth on the re-lay box was very dirty, after a very good
clean and reseating it to diff place no more problems.

 

thanks chaps,
The bloke in the garage said that they never use the glow plugs these days
so I don't know why he asked me to replace them first. I will check the
earths. Could the battery being drained over a number of hours also be
related to something like that? That problem was also supposed to have been
sorted with the software upgrade but I went out to the car this morning for
the battery to have 0 Volts in it. So something is also draining that.

 

Never heard of glow plugs or rely box draining the battery.have you
checked your boot light switch,?they are always the problem as u cant
see them on due to it being inside the boot.

 

I have checked and it isn't that or any other light, door, heater, item in
the cig lighter.

 

How old is the battery?it must be earthing it self back recheck all the
wires earths, gearbox engine,and the most that people forget is the big
main one from batt to engine or body work rempve them one at a time and
give them a very good rub down.

 

I will do that. The Battery is 2 days old. The same thing was happening to
the last battery and it was recommended to buy another one so I did only to
find that, although it lasted a bit longer, it still lost all power over
night.

 

Not that good with cars but I am an electrical engineer:

Have you tried pulling all the fuses and reconnected them one by one to see
which one is causing the problem? I note this has been recommended before.

Plan along similar lines:

1. List all fuses.
2. Each night pull one fuse.
3. Each morning check the battery.

Note which fuse was pulled when the battery is NOT drained next morning.
The problem will be on that circuit.

Pete

 

I use a clamp on ammeter I got from the local Lucas dealer a few years
ago on the battery lead, & just pull the fuses one at a time. It only
works for currents of over an amp or so, as that's the minimum current
the meter will register, but if the battery's going flat overnight,
that's at least a couple of amps, so you'll see the meter twitch.

Hope this helps.

 

:307sw 1.6Hdi 2004
:
:Hi,
:Following on from all the other problems that I have had with this car (if
:you have seen my ealier posts). Today I took my car into the garage to have
:the latest software installed and everything seemed to be fixed when I drove
:the car out but 1 mile down the road the engine warning light came back on
:and the power dropped again. I took the car striaght back to the Peugeot
:garage and he checked the error for me. P1352 - Pre/Post Heating Relay
:Circuit Error. He was unable to cancel this error so I am told that there
:must be something wrong but the garage were not willing to look into it
:without charging by the hour. The only advise he could give was to change
:all the Glow plugs. 'That might do it'. Before I spend good money after bad
:I was wondering if anybody else has had a similar problem and been able to
:sort it out.
:


Your battery is still going flat I see...

There was a problem with the 307 wiring harness rubbing through and causing a
fuse to blow
http://www.peugeotlogic.com/workshop/wshtml/electric/307f24/307f24.htm

It is quite possible that a similar problem exists on your car. Because there
are a number of wires in the harness it can cause a short to chassis on any wire
in the harness depending upon which one is closest to the outside of the bundle
and the rubbing point. It won't necessarily blow any fuses if the wire has
sufficient resistance back to the battery supply but it could certainly flatten
a battery.

As for the problem related to the P1352 error code - I can't see how a
pre-heater or glow plug fault would cause the engine to go into limp mode. It
sounds to me as if your garage personnel don't have a clue and are grasping at
straws. I would still be willing to bet this problem is caused by a faulty
differential exhaust pressure sensor.

 

thanks for that information. I have taken a look at the link and also the
car. I can't see any obvious problems with the wiring and no fuse has blown.
You might be right about the garage clutching at straws. A pity that as it
is a Peugeot garage.

Another garage did some work on it recently (about 2 weeks before this
problem) when the Cam belt went. So the head has been taken off. Maybe
something hasn't been replaced properly, although it seemed to work fine for
the first week. But after a couple of days the exhaust came loose and a
couple of air intakes were not connected properly which doesn't fill me with
confidence.

 

:thanks for that information. I have taken a look at the link and also the
:car. I can't see any obvious problems with the wiring and no fuse has blown.
:You might be right about the garage clutching at straws. A pity that as it
:is a Peugeot garage.
:
:Another garage did some work on it recently (about 2 weeks before this
roblem) when the Cam belt went. So the head has been taken off. Maybe
:something hasn't been replaced properly, although it seemed to work fine for
:the first week. But after a couple of days the exhaust came loose and a
:couple of air intakes were not connected properly which doesn't fill me with
:confidence.
:

Well, you will need to keep looking for the cause of the flattening battery,
it's there somewhere. As suggested by someone on another thread, it may be a
case of discovering it by process of elimination via sequential fuse removal and
seeing what happens overnight.

On your timing belt problem. Obviously, the "mechanic" (?) pulled the head to
check for bent or broken valves following the timing belt failure. Did they tell
you what they found?

It appears they failed to correctly tighten the exhaust and intake manifolds and
this tells me they are totally incompetent, even as backyard mechanics. I
wouldn't be letting them near any vehicle I owned.

Can you find a better Peugeot service station?

 

Found the problem with the warning light. The Heater Plug relay(attached to
the outside of the under bonnet fuse box, just behind the front bulkhead)
had burnt out. Replaced this and the car stopped loosing it's battery power
over night, the warning light went off and the power came back again.

 

:Found the problem with the warning light. The Heater Plug relay(attached to
:the outside of the under bonnet fuse box, just behind the front bulkhead)
:had burnt out. Replaced this and the car stopped loosing it's battery power
ver night, the warning light went off and the power came back again.
:
:

Great news Lenny. Thanks for letting everyone know of your success.

 

Well done finding the problem , but this should still have shown up when
testing for power drain with a multimeter.
But at least its sorted now. You never know you might even start to like the
car now.

GGJ

 

"GGJ" <GGJnospam.com> wrote in message

It's a fairly early 307, for God's sake.

Ron Robinson (taking shelter)

 

Not a 307 fan then Ron?
GGJ

 

Please be careful, I can get very boring about a firm whose cars used to be
designed by engineers who knew what made a car ride well and be worth
driving, but who have now been replaced by a market research department that
doesn't. Combine that with inadequately developed electrics and unreliable
mechanical bits and you have the early 307. It's the sort of car that could
have been made by anybody and it's a pity it wasn't - they'd probably have
done it better.

Ron Robinson

 

Hi,

could
I have to agree here, and it's a bit of a heavy trend now in automotive
market.
Former PSA's CEO thought nowadays cars are all technically equal each others
between brands - i.e the 406 worthes a Laguna, or a Mondeo, or whatever else
in the same market segment. And although being a good manager (when he came
at the top of PSA the group was merely producing 2M cars a year, when he
left they were a bit above 3 millions, improving benefits, and that's a goal
for every private company), I have to say I totally disagree with that.
He certainly gave too much of money to designers - I mean the guys with long
hair which are about to the look of a car, leading the tech department to
almost starve... When there was all of these electronics fault with 307s
(which was the first fully-muxed Pug ever), it sprung to eyes : nice ideas,
almost everything you could expect for electronics embeeding was there
(multiple ECUs and redundant buses divided by group of functions, useful
when failing). Some other makers seems they even didn't know about this
evidence...
But another thing came to mind : yes they were still a bit brilliant and
certainly a bit above most common cars (even if the "VW-style" in the 307
sounded at me like an alert), and they released another generation of pretty
good Diesel engines (HDI's) which common fails on early cars were due to
crap components provided by Bosch... But what's next ?
The 407 has an excellent chassis, at least front train, the rear axle being
took off a 406, *BUT* the Coupe has something too huge, hence a lack of
elegance, and I miss the 406 Coupe, which was eeer so elegant and somewhat
exciting, I guess.

Here we are : while Pug gave almost all of the design part to Pininfarina,
there were some ducks but the global stuff was great. Now the techs &
engineers have far less liberty, it misses something in the house*. I also
expect a great way back of engineering in its house. I well imagine an army
of techies and engineers coming on the design area, slapping some hippies
and screaming "get out of there !".

* To be honnest, they still manage to get some nice pieces of engineering...
For example the early 206 2L HDi Eco, able of giving 120g/km without heavy
modifications (instead of 138 in standard specs). I have one, it's well
driveable, and reports a better economy than the 205D I had before, although
being heavier, bigger, and more comfortable to drive.

Cheers,