It is possible the PCM stored codes prior to the repair being carried out whilst driving vehicle. Take the vehicle to a good autoparts store (autozone etc.) Ask them to delete the codes for you. Most do this free. Then drive the vehicle again under normal operating conditions for the computer to recheck the systems. Whilst at the autostore write the codes down just incase they are different codes? Let me know.
41) Continuous Memory DTC P1309: Check Variable Reluctance CMP Sensor Output
This fault indicates MISFIRE MONITOR was disabled due to CMP sensor input signal to PCM malfunction. Possible causes for this fault are:
Camshaft Position (CMP) Sensor
CKP, ECT & MAF Sensors
Powertrain Control Module (PCM)
Turn ignition and all accessories off. Ensure PCM is connected. Using a DVOM, backprobe and measure A/C voltage between PCM harness connector CMP and PWR GND terminals. See WIRING DIAGRAMS. See Fig. 11 or Fig. 12. Start engine and vary engine speed. If A/C voltage does not vary more than.1 volt, replace CMP sensor. If A/C voltage varies more than.1 volt, check CMP sensor for correct installation. If CMP sensor is correctly installed, replace PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article. Program PCM. See FLASH VEHICLE IDENTIFICATION BLOCK PROCEDURE
Monday, January 19th, 2009 AT 6:49 AM