Reading Fault Codes 99 Patrol GU RD28
Submitted: Thursday, Aug 24, 2006 at 11:18
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satellite_boy
Ive seen mention of some members making a probe to read fault codes for the Nissan Patrol, does anyone have more detail on how to do this. Also how would I confirm that the No 1 piston is in the bottom top dead centre on the expansion stroke, ive set the cam position with dowel pin up (as per manual) and the crank key is facing directly down (as per the manual) the cam is rocking on No 1 valves with exhaust the next to open, I think its correctly aligned and can rotate the engine by hand with the timing belt replaced and cannot here or feel pistons striking valves but would like to be reassured im doing it correctly, of course any advice is considered just that, advice.....if i stuff it up its my fault. This site is an excellent sounding board when I get scared! I do have the complete nissan electronic manual.
many thanks
Reply By: Member - Jezza (NSW) - Thursday, Aug 24, 2006 at 12:30
Thursday, Aug 24, 2006 at 12:30
Hi satellite_boy,
Can't help on the mechanical side of things, but have got some info on the fault codes.
The codes are part of the OBDII (on-board diagnostics version 2) system. There are 2 main ways to read the codes; buy a dedicated OBDII reader or buy an OBDII cable and connect this to a laptop with some OBDII software. With the laptop method, just make sure that the cable you use is compatible with the ports/interfaces on the laptop ie some cables will only work with an RS232 serial port.
Be aware that some codes are part of the standard and any/all readers will be able to interpret these, other will be proprietary and you will need the manufacturers (ie Nissan, Toyota etc) documentation to figure out what they are saying.
If you google OBDII, you will find more information than you can poke a stick at! Here's a good place to start. autos.groups.yahoo.com/group/obd2/ or www.obd-2.com/
Cheers,
Jezza
AnswerID:
190735
Reply By: 120scruiser (NSW) - Thursday, Aug 24, 2006 at 20:00
Thursday, Aug 24, 2006 at 20:00
Satellite boy I take it you are replacing the timing belt.
When you have the timing cover removed have a look at all the gears. There should be a knick in each of the gears. These are the marks. You need to align the knicks in the gears with the marks relevant to each gear ie there will be one on the engine block to align the crankshaft mark, one on the cylinder head to align the camshaft gear and one on the timing cover to align the pump gear.
If you have any dramas drop me an email tomorrow at lonards at bigpond dot net dot au and I can fax you a diagram of the set up from my files at my workshop. Sometimes a picture tells a thousand words. On the RD28 engine the marks have to be perfect otherwise engine damage will occur.
I also have all the codes and the procedures to extract the fault codes but I am at home at the moment and will be able to access it tomorrow.
Just let me know.
Cheers
120scruiser
AnswerID:
190819