Recent content by Fast Freddy

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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    The clicking from the alarm sounder, has been traced to a blown 5 amp fuse in position "Number 33" in the engine bay fuse box. This also feeds power to the OBD socket, which I didn't detect as I run the MSV2 from a mains adapter... Happy days all working and functioning as normal, just in time...
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    Update on progress.... a new Bosch CPS arrived today and was compared to the old unit. The old unit did show issues with resistance on a volt meter as well as checking on an oscilloscope. The new unit was installed and low and behold after disconnecting a HT Lead and placing a spare spark plug...
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    That does cheer me up some what and having said that just looked outside and its snowing, here in Lancashire already.....typical, just when you need your 4x4.....:( Time for a nice cup of tea and another log on the fire!
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    In the interim period whilst awaiting, I will check the connectors, but they are in a rather awkward location and as the weather here in blighty is some what cold and wet, doesnt lend itself to getting underneath and removing the part....but will keep you posted. Thanks again...
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    Thanks Datatek, for the reply and I assume that as no signal is being received by the BeCM Unit from the CPS, then the BeCM may outline the "Anti Theft Alarm Fault on Drive Cycle A". From the LR Workshop Manual, Drive Cycle A commences from when the engine starts, see below. If the Immobiliser...
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    Thanks for the response and the BBS Extreme does outline any problems with the Crank Position Sensor and diagnostics, run through a series Crank Shaft Stages or Phases 1 to 4, which covers misfire detection and adaptation. In the log on the diagnostics these are indicated as "NOT DONE" in all 4...
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    P38A Code P1668 - Anti Theft Alarm Serial Link Fault - Drive Cycle A

    Hi Members, I have recently changed the battery on my 4.6litre Yr2000 RR and resynced the key fob with the EKA code and routine. Connected up my BBS MSV2 Extreme diagnostics and found the above code (P1668). With the MSV2 I have accessed the BeCM and Motronic ECU and checked the Immobilsation...
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