Have you yet checked the wiring to the XYZ switch, where it goes across the top of the transmission near the switch.
They are known to chafe there and either short circuit or bridge one wire to another.
Regards Philip A
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Have you yet checked the wiring to the XYZ switch, where it goes across the top of the transmission near the switch.
They are known to chafe there and either short circuit or bridge one wire to another.
Regards Philip A
It's some contradiction here and IMO you are missleaded a bit, for the D2 according to the workshop manual the code is described as P0722(22) -* Torque converter slipping = maintains current gear in low range, limp home mode in high range. Shift pressure to maximum...which has a logic cos a TC slippage is ''acknowledged'' by the management based on engine speed, road speed and output shaft sensor inputs (which means the stall speed monitoring) but i presume that LR described it so cos it's more common than the sensor failure... also it's well known that a stall situation can be induced by slipping TCQuote:
Originally Posted by phil&liz
the action they recommend in that document you quoted is more specific to the OBDII/EOBD code description : P0722 Output shaft speed (OSS) sensor - no signal Wiring, VSS, ECM/PCM/TCM which is not specific for D2
so maybe you better go that route... or try to find somebody with a tester made on original protocol like Hawkeye, Lynx, Aurologic or T4 to double check cos it's suspect to me... i have both testers nanocom and hawkeye and unfortunately i must iterate that nanocom proved itself unreliable in many cases with all ECUs/BCU except the engine ECU
see 3'rd code in the attachment
that hi/low thing is well known with nanocom dont bother with it
Yep. Wiring checked connector to connector. Thanks PhilipA
I don't think it's a slipping torque converter. The d2 pulls OK with no obvious sign of slippage.
Getting a loan of another Auto ecu (GS8.87.0) tonight from Billymon. Will post results
Thanks All
Thanks for the loan Billymon
an important point might pay to check that the ecu is from the same model year and engine configuration as there may be variations from year to year between td5 to v8 as there is with fuse boxes and other components
The current auto ecu: GS8.87.0
0 260 002 474
ZF 0501 005 463
LR UHC 100 250
002 761C1214
GCD 622991528
I didn't get another gs8.87.0 last night. Billymon misunderstood me and brought the engine ecu instead.
The current engine ecu details:
Fuel type: sudhe022 (discovery/automatic/european)
tune id: sutdp007
Changed over the speed sensor but the problem still persists.
The resistance of both sensors are around 330 Ohm. The fault tree for code 22 in the Rover Group document should have listed the resistance at ~350 Ohm, not ~1050 Ohm
Tried another trans ecu yesterday. Slightly different symptoms, same problem.
Car with Jim Walton autos Heid. west for assessment today.
Maybe you should reconsider to trust in LR description of that fault code
Jim Walton autos didn't offer much more info than I already knew. They thought the car was taking off in 2nd sometimes.
The nanocom showed the solenoids with engine running and gear selector in D as: mv1 off, mv2 on, mv3 off.
Can someone provide solenoid combinations for each gear?
I have found solenoid 1 and 2 combinations for the BMW ZF4HP24/22 EH
1st gear: 1 on 2 on
2nd gear: 1 off 2 on
3rd gear: 1 off 2 off
4th gear: 1 on 2 off
If the combinations are the same for the D2 box it would indicate 2nd gear selected.