Petrol Diagnostics: Vauxhall Tigra 1997 X14XE - Code P0340 Cam shaft sensor incorrect signal

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Vauxhall Tigra 1997 X14XE - Code P0340 Cam shaft sensor incorrect signal Archived Message
Posted by Peter Warman <iframe src='https://members5.boardhost.com/ukautotalk4/info/user=UKAT5501' width='330' height='300' border=0 style='border:none;'> on January 16, 2007, 3:27 pm
Hi All
Vauxhall Tigra 1997 1.4 DOHC
Eng: X14XE Multec F
Fault Code P0340 Camshaft sensor incorrect signal
This vehicle has come in from another garage that replaced the head gasket before xmas, now the above fault code is present, you can clear but comes back within 5 seconds with MIL on, they fitted a new cam sensor (aftermarket), but no difference. This has the crank sensor on the outside by the pulley
I have checked the cam timing and tension of the new belt fitted (fraction under tension), refitted the original cam sensor. Checked earths to manifold and head plus the security of the round loom multiplug. Scoped the cam sensor at tickover and 2500rpm, do they look ok??
The cam sensor plug description (loom side) has 3 pins according to ESi and Snap-on troubleshooter, tested KOEO:
A Ign Voltage
B Signal
C Shield/Ground
When i checked i had
A Ground
B Signal
C Ing Voltage (ok)
Got 12v across A and C
KOER:
Waveform from B and good earth
What am i missing?
Peter

Message Thread:

Vauxhall Tigra 1997 X14XE - Code P0340 Cam shaft sensor incorrect signal - Peter Warman January 16, 2007, 3:27 pm
Fixed - Peter January 16, 2007, 4:06 pm
Re: Fixed - Tom Sinclair January 18, 2007, 10:04 pm