We've had this Golf 5 towed in last week, history unknown.
It starts & dies as per immobiliser fault.
There is no engine management light & No glow plug light when the ignition is switched on.
If the ignition is left on the cooling fans run up to full speed within 30 seconds & stay active until the ignition is off.
Carried out a full systems code read using VCDS, Autologic & Bosch KTS.
None of the scanners could access the CAN Gateway & all of them failed to access any ECU other than the Engine.
8 x faults logged in engine - a few related to missing ECU comms, no U codes - as below. present.--------------------------------------------------------------------------------
ENGINE ELECTRONICS
8 Fault(s) Present
18043 (P1635) POWERTRAIN DATABUS (No Message From A/C Control Module)
18058 (P1650) DRIVETRAIN DATABUS (NO MESSAGE FROM INSTRUMENT CLUSTER)
16955 (P0571) BRAKE LIGHT SWITCH F (IMPLAUSIBLE SIGNAL)
17978 (P1570) ENGINE CONTROL MODULE DISABLED
17056 (P0672) PREHEATING SPARK PLUG 2 Q11 (Electrical Fault)
17057 (P0673) PREHEATING SPARK PLUG 3 Q12 (Electrical Fault)
19558 (P3102) INTAKE MANIFOLD FLAP MOTOR V157 (NO SIGNAL)
19557 (P3101) INTAKE MANIFOLD FLAP MOTOR V157 (OPEN CIRCUIT / SHORT TO GROUND)
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It seems an odd fault for a Golf?
The engine ECU is communicating on KWP2000, not on the CAN lines - The CAN Gateway is inaccessible from any of the scanners when trying to communicate directly & not part of an Autoscan.
Any ideas chaps?