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    Vauxhall Astra -G 1.8 1998 X18XE1 Simtec 70 Archived Message

    Posted by Tom Sinclair on September 10, 2007, 9:48 pm

    Hi everybody. This car starts and runs from cold for about 12 minutes. It then cuts out and will not re-start for 20 to 30 minutes. On re-start it will run for 2 to 5 minutes then cut again for another 20 to 30. While not starting there is no communication with the engine control computer. Codes present while comms available are 1612, and 1613 both presented as no signal or improbable signal from immobiliser (using KTS). Immobiliser 3.0 error memory is, B3040 - Communications line W signal improbable. and B3059 - Engine request no signal. ECU earth checked and made good. I have battery voltage at pin B48 and ignition supply at pins B31, B32, and A13, According to wiring diagrams I should have Batt voltage at pin B44 which is connected to Immobiliser. Pin B53 should be ECU control earth for engine relay. Neither of these two pins are wired.
    Before I go any further, I hope that this may mean something to some one,
    Cheers
    Tom

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