Self diagnostic on ECU

[Ben A]

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 :)

[arry]

all you need is a screwdriver and a 10mm socket

[Steve@EMS]

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

[Steve@EMS]

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

[Steve@EMS]

Code Fault location
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

[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? :confused:

cheers, ben

[Steve@EMS]

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? :confused:

cheers, ben

Yeah, when you've sorted the fault(s) you need to erase the codes that have been stored in the ECU. :thumbs:
Did you find anything wrong?

[John Bennett]

Here is the service manual information on this :)

http://media.sxoc.com/contributors/s13faq/S13Faultcode1.gif
http://media.sxoc.com/contributors/s13faq/S13Faultcode2.gif
http://media.sxoc.com/contributors/s13faq/S13Faultcode3.gif