Saturn Repair Problems? Ask a Mechanic for Answers ASAP
how does it run ?
once cleared how soon before that code sets ?
that is the only code being set ?
any access to a scan tool ?
with that code it usually is a bad ICM or computer
is the wiring good from the ICM to the computer ?
the ECM is under the hood # ***** as seen here in this picture
if the wiring to it looks good replace the spark plugs if it still sets this code replace the ignition module complete assembly if it still acts up and the wiring is good from the ICM to the ECM then the ECM is bad
most of these end up being spark plugs or the ignition control module assembly being bad setting this code
This ignition system does not use a conventional camshaft position (CMP) sensor that detects valve train position. The ignition control module (ICM) detects when #1 or #3 cylinder has fired on the cylinders compression stroke using sensing circuitry integrated within each coil. The sensing circuit detects the polarity and the strength of the secondary voltage output. The higher output is always at the event cylinder. The ICM sends a CMP signal to the engine control module (ECM) based on the voltage difference between the event and waste cylinder firing energy. This system is called compression sense ignition. By monitoring the CMP and crankshaft position (CKP) signals, the ECM can accurately sequence the fuel injectors. If the ECM does not receive a CMP signal from the ICM, DTC P0340 sets
you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer
if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer
the complete top ignition assembly was replaced ?
if so with this code and 2 sets of plugs it has to be the wiring from the ICM to the ECM or the ECM itself
how are you making out ?