Conditions for Running the DTC
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fail Case 1
- Ignition is ON.
- Ignition voltage is greater than 6 volts.
- GM LAN ECM or MCM 1 CKP engine speed is less than 1500 RPM.
Fail Case 2
- Ignition is ON.
- Ignition voltage is greater than 6 volts.
- GM LAN ECM or MCM 1 CKP engine speed is greater than 1500 RPM.