JEEP WILL NOT START I HAVE 2 CODES P 0320 AND P ...
2002 Jeep Grand Cherokee
Jeep will not start I have 2 codes P 0320 and P 1698 what do they mean?
Monday, October 22nd, 2012 AT 10:03 PM
P0320-NO CRANK REFERENCE SIGNAL AT PCM
With the ignition ON.
No signal from the crankshaft position sensor is present during engine cranking, and at least 3 camshaft position sensor signals have occurred.
CAM position sensor signal
Checking intermittent CKP signal with LAB scope
5 volt supply circuit shorted to ground
5 volt supply circuit open
5 volt supply circuit shorted to voltage
CKP sensor signal circuit shorted ground
CKP sensor signal circuit open
CKP sensor signal circuit shorted to voltage
CKP sensor signal shorted to 5 volt supply circuit
Crank sensor ground circuit open
PCM - 5 volt supply
PCM - CKP sensor signal
Crankshaft position sensor
P1698-NO BUS MESSAGE FROM TCM
Wiring harness intermittent problem
No bus message from TRANS
PCM PCI bus circuit open
Must follow the tree chart to determine the failure. Crank sensor is a common failure