Canadian Freelander Woes

[pquin]

Hello All,

I have a 2004 Freelander SE KV6 Automatic that is not feeling well.

Both service lights are on.  When driving, it will drive normally (quite well actually) for anywhere from 1 minute to 10 minutes, then a flashing F - 4 code on the LCD with the HDC warning lights lit up.  The transmission goes into single speed limp mode.

I've done a fair bit of googling regarding the problems which has lead me to suspect that it is an electrical / communications problem or a sensor problem that is bringing down the network.  Suspects range from the brake switch to the ECU cooling fan to a dodgy hub speed sensor.  I've hooked up a generic ODD II reader and retrieved the following list of codes:

MIL DTC

P1646  CAN link to auto gearbox ECU. Implausible signal/condition

Technical Service Bulletins:

There are currently no TSBs for P1646.

Stored Codes

P0222  Throttle/Pedal Position Sensor B Circuit Low Input

 

P0500  Vehicle Speed Sensor A

 

P0606  ECM / PCM Processor

 

P1605  Internal EEPROM fault General fault

 

P1627 engine overspeed.Implausible signal/condition

 

P1646 CAN link to auto gearbox ECU.Implausible signal/condition

Technical Service Bulletins:

There are currently no TSBs for P1646.

P1775 Gearbox Fault

 

P1844 Engine RPM error flag set.

Any thoughts on a good place to start.  I'm a fairly competent mechanic and electrician with a good set of tools.

I've started by installing a fresh battery and checked for obvious wire damage...

 

Cheers,

 

Paul in Victoria.

[toastkid]

Have you had a look at the barrel connector:

http://forum.lro.com/viewtopic.php?f=20&t=66004#p597701