Test TC-2B - No Crank Reference Signal At Pcm
WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For circuit & connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE
. For wiring diagrams, see WIRING DIAGRAMS
section. After each repair, perform TEST VER-2
.
- Disconnect Crankshaft Position (CKP) sensor connector. Inspect CKP sensor connector. Clean and repair wiring and connectors as required. If CKP connector is okay, go to next step.
- Using DRB in voltmeter mode, check voltage on CKP sensor terminal No. 1 (Orange wire). If voltage is more than 7 volts, replace CKP sensor. If voltage is less than 7 volts, go to next step.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Inspect PCM connector. Clean and repair wiring and connectors as required. If PCM connector is okay, go to next step.
- Using DRB in ohmmeter mode, check resistance of PCM connector terminal No. 7 (Orange wire). If resistance is less than 5 ohms, repair short to ground in Orange wire. If resistance is more than 5 ohms, go to next step.
- Using an external ohmmeter, check resistance of Orange wire between CKP sensor connector terminal No. 1 and PCM connector terminal No. 7. If resistance is more than 5 ohms, repair open Orange wire. If resistance is less than 5 ohms, replace PCM.