9-5 SE Sedan (9600) V6-3.0L Turbo (B308) (1999)
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Two detectors measure the voltage drop across cylinder Nos. 1+2 and 3+4 respectively. If combustion occurs in cylinder No. 1 or No. 2, the ignition
discharge module sends a B+ pulse to control module pin 53. Similarly, the ignition discharge module sends a B+ pulse to control module pin 6 if
combustion occurs in cylinder No. 3 or No. 4.
If cylinders No. 1 and No. 4 are triggered and a B+ pulse is received on control module pin 53 at the same time, the control module knows that cylinder
No. 1 has fired.
As soon as combustion signals are received on control module pins 53 and 6, both ignition and fuel injection are synchronized to the engine firing order.
Diagnostics
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If ignition and the camshaft position are not synchronized, diagnostic trouble code P0340 will be generated.
System reaction to a fault
If a break occurs in any of the leads to control module pins 53 and 6, no synchronization of the ignition or fuel injection will take place. Knock detection
then takes place on cylinder Nos. 1+4 and 2+3 at the same time.
