self diagnostic on ecu

Ben A · 05-05-2004, 12:36

youp,

can anyone please tell me if you need that little bit of kit which plugs in to the fuse box (i think) and has a green and red LED on it thats in the s13 workshop manual under the EF&EC section for doing self diagnostic, or whether you just need to be able to get to the ecu itself?

also can anyone tell me where the ecu actually is if you don't neeed this bit of kit so i can try and find out whats up with my car?

thanks very much in advance

Steve@EMS · 05-05-2004, 12:39

according to autodata you dont need anything to check. will post the procedure in a few minutes!

arry · 05-05-2004, 12:41

all you need is a screwdriver and a 10mm socket

Steve@EMS · 05-05-2004, 12:48

ECU in passenger kickwell on the left.
*start engine and allow to idle
*If engine does not start, Crank engine for four seconds
*Turn diagnostic mode selector on ECU fully clockwise
*After LEDs have flashed three times: turn diagnostic mode selector fullly
anti clockwise
*check that LEDs flash
*Red LED indicate LH digit
*Green LED indicates the rRH digit
*For example. One red flash followed by three green flashesindicate trouble code 13 (Engine coolant temp sensor)
*Count the LED flashes. Note the trouble codes
*Switch ignition off

Ben A · 05-05-2004, 12:52

thanks very much steve, great help

Steve@EMS · 05-05-2004, 12:53

Switch ignition on
*Turn diagnostic mode selector fully clockwise
*After LEDs have flashed three times, Turn back diagnostic mode selector.
*Check that LEDs flash
*Turn diagnostic mode selector clockwise again
*After LEDs flash four times:Turn diagnostic mode selector back anti clockwise again.
*switch off ignition

ATrull · 05-05-2004, 13:00

Quote:

Originally Posted by arry

all you need is a screwdriver and a 10mm socket

.. make that a philips head

Steve@EMS · 05-05-2004, 13:01

Code Fault location
11 Crank Position sensor
12 Air Mass Sensor
13 Coolant Temp Sensor
14 Vehicle Speed Sensor
21 Ignition Signal
22 Fuel Pump
23 Closed Throttle Position Switch
24 Park/Neutral position switch (Auto)
31 Additional idle air control valve
32 Starter Signal
34 Knock Sensor
41 Fuel Temp Sensor
44 No fault found
55 No fault found

Pete C · 05-05-2004, 18:11

Quote:

Originally Posted by ATrull

.. make that a philips head

You sure? Mine's deffo a flat head screw on the ECU.

Or do you mean to get the trim off to get to the ECU?

**Kev** · 05-05-2004, 21:41

Quote:

Originally Posted by ATrull

.. make that a philips head

................if u dont want to be able to turn the pot in the ecu.................

Ben A · 06-05-2004, 11:17

hi steve,

what do you mean by erase codes?
is that after you've fixed what the problem is, so the ecu now knows its fixed?

cheers, ben

Steve@EMS · 06-05-2004, 11:21

Quote:

Originally Posted by 2.3_ben.a

hi steve,

what do you mean by erase codes?
is that after you've fixed what the problem is, so the ecu now knows its fixed?

cheers, ben

Yeah, when you've sorted the fault(s) you need to erase the codes that have been stored in the ECU.

Did you find anything wrong?

Ben A · 06-05-2004, 13:43

no not yet. i haven't got my car with me where i am at the mo

, but hopefully i'll get down to lookin to see whats up with it this weekend.

thanks for all the help you gave us everyone

nomad geordie · 11-04-2005, 19:52

Cheers Steve

Saved having to dig the fault codes out of the manual

m.d. · 19-08-2005, 21:07

just found out that there is nothing wrong with my electrical side of things by doing this, just means that it is my headgasket lol, bugger

tonofun · 21-01-2006, 16:22

Anyone know what code 43 is? Cheers

arry · 21-01-2006, 16:27

knock sensor

sultennok · 14-09-2006, 16:55

is this the fault list for SR20DET powered cars also.. Because i found a completely different one today on another Nissan site.. The number didnt match up with the once steve say. ex. 32 is starter signal according to steve.. but for what i found 32. is EGR system... But maybe there is a difference in the two engines fault codes specifying?

John Bennett · 14-09-2006, 17:26

Nah, they're just the wrong codes in the list above

The only S13 codes are:

11 Crank Position sensor
12 Air Mass Sensor (MAF)
13 Coolant Temp Sensor
21 Ignition Signal
32 Starter Signal
34 Knock Sensor
43 Throttle Posision Sensor (TPS)
55 No fault found

And the extra ones for the S14:
26 Boost pressure sensor
54 Automatic Transmission

The EGR doesn't have a fault code as it's not self-monitored

(you're not confusing 'Diagnostic Procedure Number, with 'trouble code' when reading the manual, are you?)

sultennok · 03-10-2006, 18:44

I might be... But i still struggeling.. My car hasnt a " check engine" light in the dash.. And it doesnt have the Little screw and LED´s on the ECU... Sp how the hell do i check this out!?!?!!?!

There is a consult plug, but nothing flashing in the dash when shortet. And when i turn the ignition on, there is no "check engine" light illuminating. Its a ´91 180SX RPS13 with SR20DET engine in it. Jap import..

Cant i check my fault codes then?

Thanks

Jacob

05-05-2004, 12:36	#1
Ben A NON-MEMBER Join Date: Apr 2004 Location: bedfordia Posts: 2,585	self diagnostic on ecu youp, can anyone please tell me if you need that little bit of kit which plugs in to the fuse box (i think) and has a green and red LED on it thats in the s13 workshop manual under the EF&EC section for doing self diagnostic, or whether you just need to be able to get to the ecu itself? also can anyone tell me where the ecu actually is if you don't neeed this bit of kit so i can try and find out whats up with my car? thanks very much in advance __________________ '93 S13 shell and remaining parts for £150

05-05-2004, 12:52	#5
Ben A NON-MEMBER Join Date: Apr 2004 Location: bedfordia Posts: 2,585	thanks very much steve, great help __________________ '93 S13 shell and remaining parts for £150

05-05-2004, 12:53	#6
Steve@EMS Guest Join Date: Mar 2004 Posts: 1,537	To erase fault codes Switch ignition on Turn diagnostic mode selector fully clockwise After LEDs have flashed three times, Turn back diagnostic mode selector. Check that LEDs flash Turn diagnostic mode selector clockwise again After LEDs flash four times:Turn diagnostic mode selector back anti clockwise again. switch off ignition

05-05-2004, 13:01	#8
Steve@EMS Guest Join Date: Mar 2004 Posts: 1,537	Fault code identification Code Fault location 11 Crank Position sensor 12 Air Mass Sensor 13 Coolant Temp Sensor 14 Vehicle Speed Sensor 21 Ignition Signal 22 Fuel Pump 23 Closed Throttle Position Switch 24 Park/Neutral position switch (Auto) 31 Additional idle air control valve 32 Starter Signal 34 Knock Sensor 41 Fuel Temp Sensor 44 No fault found 55 No fault found

06-05-2004, 11:17	#11
Ben A NON-MEMBER Join Date: Apr 2004 Location: bedfordia Posts: 2,585	hi steve, what do you mean by erase codes? is that after you've fixed what the problem is, so the ecu now knows its fixed? cheers, ben __________________ '93 S13 shell and remaining parts for £150

05-05-2004, 12:39	#2
Steve@EMS Guest Join Date: Mar 2004 Posts: 1,537	according to autodata you dont need anything to check. will post the procedure in a few minutes!

05-05-2004, 12:48	#4
Steve@EMS Guest Join Date: Mar 2004 Posts: 1,537	ECU in passenger kickwell on the left. start engine and allow to idle If engine does not start, Crank engine for four seconds Turn diagnostic mode selector on ECU fully clockwise After LEDs have flashed three times: turn diagnostic mode selector fullly anti clockwise check that LEDs flash Red LED indicate LH digit Green LED indicates the rRH digit For example. One red flash followed by three green flashesindicate trouble code 13 (Engine coolant temp sensor) Count the LED flashes. Note the trouble codes Switch ignition off

06-05-2004, 13:43	#13
Ben A NON-MEMBER Join Date: Apr 2004 Location: bedfordia Posts: 2,585	no not yet. i haven't got my car with me where i am at the mo , but hopefully i'll get down to lookin to see whats up with it this weekend. thanks for all the help you gave us everyone __________________ '93 S13 shell and remaining parts for £150

11-04-2005, 19:52	#14
nomad geordie NON-MEMBER Join Date: Apr 2004 Location: Newcastle / Northumberland Posts: 285	Cheers Steve Saved having to dig the fault codes out of the manual __________________ Moving house Facelift J reg S13 T&T for sale, cheap S13 spares

19-08-2005, 21:07	#15
m.d. enginetuner 400+ club :) Join Date: Jul 2005 Location: plymouth Posts: 6,629	just found out that there is nothing wrong with my electrical side of things by doing this, just means that it is my headgasket lol, bugger

21-01-2006, 16:22	#16
tonofun NON-MEMBER Join Date: Oct 2005 Location: Newport, South Wales Posts: 343	Anyone know what code 43 is? Cheers __________________

14-09-2006, 16:55	#18
sultennok Guest Join Date: May 2006 Location: Denmark Posts: 88	is this the fault list for SR20DET powered cars also.. Because i found a completely different one today on another Nissan site.. The number didnt match up with the once steve say. ex. 32 is starter signal according to steve.. but for what i found 32. is EGR system... But maybe there is a difference in the two engines fault codes specifying?

14-09-2006, 17:26	#19
John Bennett innit Join Date: Aug 2003 Location: N.E. Posts: 18,858	Nah, they're just the wrong codes in the list above The only S13 codes are: 11 Crank Position sensor 12 Air Mass Sensor (MAF) 13 Coolant Temp Sensor 21 Ignition Signal 32 Starter Signal 34 Knock Sensor 43 Throttle Posision Sensor (TPS) 55 No fault found And the extra ones for the S14: 26 Boost pressure sensor 54 Automatic Transmission The EGR doesn't have a fault code as it's not self-monitored (you're not confusing 'Diagnostic Procedure Number, with 'trouble code' when reading the manual, are you?) __________________ 106 diesel. Working (just). '97 180sx. In bits since '07 92 MX-5. Not working and soon to be in bits.

03-10-2006, 18:44	#20
sultennok Guest Join Date: May 2006 Location: Denmark Posts: 88	I might be... But i still struggeling.. My car hasnt a " check engine" light in the dash.. And it doesnt have the Little screw and LED´s on the ECU... Sp how the hell do i check this out!?!?!!?! There is a consult plug, but nothing flashing in the dash when shortet. And when i turn the ignition on, there is no "check engine" light illuminating. Its a ´91 180SX RPS13 with SR20DET engine in it. Jap import.. Cant i check my fault codes then? Thanks Jacob