Bad ECU 1.6 8v 1990.

[Lynyrd]

Hello!
M'y name ils Arthur.I'm from France.

My suzuki vitara 1.6 8v 1990 Start vert vert badly cold.
Engine hot Start OK.
I replaced the caps in the ecu.
Always the same.
The cel lamp on permanently.
Impossible to diagnose.
CEL light all time.

Thanks.

[Lynyrd]

No NAG switch.

[fixkick]

hello, welcome to Texas !
my guess the CEL lamp is on but does not flash.(yet) this lamp on means the ECU knows whats wrong, so we ask it to report this.
so that means to insert the diagnostic jumper. (a paper clip (metal only unpainted)
into the cars DLC socket, also called, the Monitor connector?
This jumper can be in 2 places.
1: the fuse box above left knee (if not UK car RHD)
2: the front of battery see that here.

http://www.fixkick.com/CEL/DLC/DiagJump.html

my guess, see this red car body here. see that connector in front of battery?

jump B to C. and see the CEL lamp flash ERROR codes. 12 = good, others all bad.

Hello!
M'y name ils Arthur.I'm from France.

My suzuki vitara 1.6 8v 1990 Start very very badly cold.
Engine hot Start OK.
I replaced the caps in the ecu.
Always the same.
The cel lamp on permanently. (this needs attention first)
Impossible to diagnose. ( not true, HAHAHAHAAHA)
CEL light all time.

Thanks.

[Lynyrd]

hello, welcome to Texas !
my guess the CEL lamp is on but does not flash.(yet) this lamp on means the ECU knows whats wrong, so we ask it to report this.
so that means to insert the diagnostic jumper. (a paper clip (metal only unpainted)
into the cars DLC socket, also called, the Monitor connector?
This jumper can be in 2 places.
1: the fuse box above left knee (if not UK car RHD)
2: the front of battery see that here.

http://www.fixkick.com/CEL/DLC/DiagJump.html

my guess, see this red car body here. see that connector in front of battery?

jump B to C. and see the CEL lamp flash ERROR codes. 12 = good, others all bad.

[/quote]


No works. CEL light not blinking.

[fixkick]

Ok,, it is a real Vitara, and with VIN number? or chassis tag numbers, showing this fact, and was never ever was in the USA
reason being, our cars have a NAG lamp function that causes CEL to stick on. barring that odd USA federal feature.
you don't have that, USA setup. so....
A french suzuki is market
So that CEL stuck on , with the diagnostic jumper inserted (where did you find yours?)
then the CEL wires is shorted to the body or ECU is bad. (or the diagnostic wires cut)
so if you unplug the ECU, green connector, and THEN key on, is the CEL glowing still? (this is in the factory manual of off all vitara's)
If lamp goes OUT now. Lamp and wires are ok. there.

but if lamp goes on, key ON now, then that wire is shorted to the chassis ground.
see?
where was your DLC ?, how many pins. does it have. 4 or 6 (or a fuse)
are you sure the pins were jumper-ed correctly, matching the 3 systems used,? (2 pin fuse, 4pin battery, 6 pin near battery) which was it?

the 1st ecu test, is make sure 5vdc arrives a the TPS sensor. at ECU A23 or TPS gray-red this is 5v power, if below 4.75v tell me.
see pin B13, that is the CEL pin.
Pin a15 is the real diagnostic pin, see that?, and if grounded the CEL must flash or the ECU is bad.
the CEL will flash codes key on, or running,.

hello, welcome to Texas !
my guess the CEL lamp is on but does not flash.(yet) this lamp on means the ECU knows whats wrong, so we ask it to report this.
so that means to insert the diagnostic jumper. (a paper clip (metal only unpainted)
into the cars DLC socket, also called, the Monitor connector?
This jumper can be in 2 places.
1: the fuse box above left knee (if not UK car RHD)
2: the front of battery see that here.

http://www.fixkick.com/CEL/DLC/DiagJump.html

my guess, see this red car body here. see that connector in front of battery?

jump B to C. and see the CEL lamp flash ERROR codes. 12 = good, others all bad.

No works. CEL light not blinking.
[/quote]


got this tag, is your 24, code, below, 04, = France, that is your market code, or 22 is German.




all market IDs are here
http://www.fixkick.com/specs/the-market-list1.html

[Lynyrd]

Ok,, it is a real Vitara, and with VIN number? or chassis tag numbers, showing this fact, and was never ever was in the USA
reason being, our cars have a NAG lamp function that causes CEL to stick on. barring that odd USA federal feature.
you don't have that, USA setup. so....
A french suzuki is market
So that CEL stuck on , with the diagnostic jumper inserted (where did you find yours?)
then the CEL wires is shorted to the body or ECU is bad. (or the diagnostic wires cut)
so if you unplug the ECU, green connector, and THEN key on, is the CEL glowing still? (this is in the factory manual of off all vitara's)
If lamp goes OUT now. Lamp and wires are ok. there.

but if lamp goes on, key ON now, then that wire is shorted to the chassis ground.
see?
where was your DLC ?, how many pins. does it have. 4 or 6 (or a fuse)
are you sure the pins were jumper-ed correctly, matching the 3 systems used,? (2 pin fuse, 4pin battery, 6 pin near battery) which was it?

the 1st ecu test, is make sure 5vdc arrives a the TPS sensor. at ECU A23 or TPS gray-red this is 5v power, if below 4.75v tell me.
see pin B13, that is the CEL pin.
Pin a15 is the real diagnostic pin, see that?, and if grounded the CEL must flash or the ECU is bad.
the CEL will flash codes key on, or running,.

hello, welcome to Texas !
my guess the CEL lamp is on but does not flash.(yet) this lamp on means the ECU knows whats wrong, so we ask it to report this.
so that means to insert the diagnostic jumper. (a paper clip (metal only unpainted)
into the cars DLC socket, also called, the Monitor connector?
This jumper can be in 2 places.
1: the fuse box above left knee (if not UK car RHD)
2: the front of battery see that here.

http://www.fixkick.com/CEL/DLC/DiagJump.html

my guess, see this red car body here. see that connector in front of battery?

jump B to C. and see the CEL lamp flash ERROR codes. 12 = good, others all bad.

No works. CEL light not blinking.

got this tag, is your 24, code, below, 04, = France, that is your market code, or 22 is German.




all market IDs are here
http://www.fixkick.com/specs/the-market-list1.html
[/quote]


my code is 25

[Lynyrd]

Ok thanks!

My vin number is JSAETA01V00108621,Suzuki made in Japan.

Code 25 for Holland.

ECU number 33920-60A70
E2T40671
9316B

TESTS:


The fuse box with fuse diag- CEL not blinking,ON all time.
The front of battery connector 4 pins jmping B+C with paper clip, CEL not blinking ON all time;
Fuse box + 4pins connector B+C not blinking.

Unplugging ECU green connector lamp goes out.

i dont have 6 pins connector near battery.

TPS: gray-red + battery minus, key on-5V OK!

PIN A15 + ground not blinking................

My ECU is dead ?



I not replaced the capacitor C2 47uF 10V orange colour....

[fixkick]

Ok thanks!

My vin number is JSAETA01V00108621,Suzuki made in Japan.

Code 25 for Holland.

ECU number 33920-60A70
E2T40671
9316B

TESTS:


The fuse box with fuse diag- CEL not blinking,ON all time.
The front of battery connector 4 pins jmping B+C with paper clip, CEL not blinking ON all time;
Fuse box + 4pins connector B+C not blinking.

Unplugging ECU green connector lamp goes out.

i dont have 6 pins connector near battery.

TPS: gray-red + battery minus, key on-5V OK!

PIN A15 + ground not blinking................

My ECU is dead ?
seems yes. we now know the lamp works, and you have both DTC diag, connections, one at Fuse, and one at 4pin DLC near battery.
this is very common setup for real Japan made Vitara, (not CAMI, canada made)



I not replaced the capacitor C2 47uF 10V orange colour.... 50v, 60v, 63v, 75v or 100v ok but never ever 10v. 1
the best cap is (LOW ESR, cap, and is 105 deg. C rated, not 85c. use the best cap you can buy here,
look of damage under the large cap. any seen is bad , show me it?

10v is no GOOD.
show photos of ecu, for sure that corner cap, it the connector side corner
do yo have signs of acid spills like my page shows.
seems to me the ECU is in backup mode, (means dead) and engine runs but is super rich burning fuel, smells and CAT CON.
some good and bad, see acid spills ...
http://www.fixkick.com/ECU/hell/html/image_6.html

[fixkick]

btw i see your photo in previous post and do not see any acid damage but it does take looking very close.
this car with this like
many folks complain that the lamp flashes (CEL) all the time, be we find the fuse here, in diag slot, many posts. for this
and backup mode (dead) is rare


pre 89, means the first 3 months of 89 the car was made in real Iwata, Japan, not in CAMI. (cami not up and running yet,)
so has this fuse lid seen here.

[fixkick]

let me explain backup mode
it is when the main ECU goes dead. (the main brain, and all features, dies)

there is a smaller, very very very crude, ecu (or other chip), that wakes up, ( with CEL dead is the only clue, stuck on or out)
this crude mode, runs fueling in a very crude way. (gets you home maybe, some report engine love to flood out and stall in this mode)

RPM and TPS throttle angle may be its only way to calculate fueling,