Hello Keith,
As Kev says, if you do a forum search , this is probably what you are looking for;

"Here ya go guys, reading ECM faults and clearing learnt values.


Nissan EC-24

Fuel Pump Learning Value Clearing EBS01KCL
Fuel Pump Learning Value Clearing should be performed under the following conditions.

1. Fuel pump is changed.
2. ECM is replaced with used one which stores the fuel pump learning value of other fuel pump.
3. Fuel Filter changed

Now no worries at all about clearing the code for the ECM as I have done this before without the special tools Nissan make you believe you have to, to clear the codes from your ECM.

How to Set Diagnostic Test Mode II (Self-diagnostic Results)

1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts blinking.
4. Fully release the accelerator pedal.
ECM has entered to Diagnostic Test Mode II (Self-diagnostic results).
Now read the codes!!!


How to Erase Diagnostic Test Mode II (Self-diagnostic Results)

1. Set ECM in Diagnostic Test Mode II (Self-diagnostic results).
2. Fully depress the accelerator pedal and keep it for more than 10 seconds.
The emission-related diagnostic information has been erased from the backup memory in the ECM.
3. Fully release the accelerator pedal, and confirm the DTC 0000 is displayed.

or in short

Ign on count to 3
full on and off throttle 5 times within 5 sec'c
count to 7 hold throttle down for 10 or so seconds
wait for the ECM light to flash let go of throttle and your in
Count the codes after you have written them down or if you dont need any codes just hold the throttle down until you see the ECM pattern change to ten fast flashes twice and then ten slow flashes and there you have one reset ECM

I thank You!!! And get me a drink!! "

here's the link ; http://members.boardhost.com/ukautotalk8/msg/1303915510.html


Regards, Andrew