Thread: Need help to read fault logs of a D2

Do you mean that the M&S lights come up on the dash?
If so it is 90% that the XYZ switch on the auto is stuffed or needs cleaning and reassembling.
10% that the wiring loom over the back of the gearbox is chafed.
Look up XYZ switch in the google window at the bottom of the page.
When there is only one main cause it becomes easier.LOL
Regards Philip A

Battery voltage needs to remain high too, if it drops too much while cranking it can bring up the M&S lights.

G'day Phil, welcome to pop around my place on the weekend if you like. Bit of a cruise, I'm in ferntree Gully but the offer is there. Pm me if you like.

Thanks for the offer. I presume you have a nanacom. Normally I would be happy to travel to FTG but as the car is showing signs of a blown head gasket or worse I'm reluctant take it that far.
Chris, my son and owner could pick it up at your place early Sunday and bring it back later the same day. We are happy to leave a security deposit.

What do you think?
Phil

Originally Posted by PhilipA

Do you mean that the M&S lights come up on the dash?
If so it is 90% that the XYZ switch on the auto is stuffed or needs cleaning and reassembling.
10% that the wiring loom over the back of the gearbox is chafed.
Look up XYZ switch in the google window at the bottom of the page.
When there is only one main cause it becomes easier.LOL
Regards Philip A

can also be caused by low battery voltage as previously mentioned also check for oil in the ecu

Hi all,

Thank you for your offers, feedback and suggestions as to what the issue is that I am facing. Thanks dad for posting this before I had the opportunity.

I/ we believe that the issue is within the gearbox (mechanical or electrical) systems. Rather than with the battery voltage, and it doesn't logically seem to be the wxyz switch ( not saying that either of these are defiantly not the cause but they don't seem to make sense) I will further describe the issue encountered to given you all more clues.

The car will start and idle shift to reverse to drive or any of the forward gears all without issue, the vehicle can be driven in reverse without issue or in drive at low speed ( so that the box would not normally shift into second ) the box goes into limp mode when the engine revs go over 3000 rpm with mild accelerator use.

Anyway, we would still like to borrow a diagnostic tool to read the fault codes if there is anyone who lives anywhere between dandenong and Epping willing to lend one.

Now have a nanocom. Only one fault being recorded for the auto: P0722 (22) "stall speed monitoring"
have the system document "4 speed electronic automatic transmission system" revision 2.3 by Rover Group 1998 and have followed the fault tree analysis for fault code 22 (p0722)
It takes me to action: "measure resistance between pins 42 and 14 of the auto ecu" connector C0193
decision point: is resistance ~1050 Ohm. I am reading 330 Ohm so answer is no.
action: check wiring to output shaft speed sensor, If OK replace sensor.
Wiring checked OK.
I have found other information indicating the resistance of the speed sensor is around what I'm reading. So I'm not sure if the sensor is the problem?
The price from Land rover for the speed sensor is $42 (not bad)but will need to come from the UK and several weeks to arrive.
Also, the fault may be in the ecu. Does anyone have a ecu and/or a speed sensor to loan/sell so I can test?

Other observations:
Nanocom readings:

When High range selected Nanocom showed Low, when Low selected Nanocom showed High. Checked the same nanocom in another D2 where the selected range was displayed correctly on the nanocom.
The mode button worked correctly. When in High "S" lamp glowed. When in Low "M" lamp glowed.

The position switch did not read as was documented although no fault logs were created and the instrument cluster and lamps on the console displayed correctly. I have attached a table.

Your opinions and suggestions will be appreciated.

Regards
Phil

The attached table is the for the wxyz observations.