Test TC-2B - No Crank Reference Signal At Pcm

WARNING: This page is about a different car, the 1995 Dodge Ram Wagon, 1995 Dodge Ram Van, 1995 Dodge Pickup, 1995 Dodge Dakota, and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS section at the end of this article.

Turn ignition off. Disconnect Camshaft Position (CMP) sensor connector. Inspect CMP sensor connector for damaged or pushed-out terminals. Repair as necessary. Perform TEST VER-2. If CMP sensor connector terminals are okay, go to next step.
Turn ignition on. Using scan tool in voltmeter mode, check voltage on CMP sensor connector 8-volt supply circuit (Orange wire). If voltage is more than 7 volts, replace CMP sensor. Perform TEST VER-2.
If voltage is less than 7 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Inspect PCM connector for damaged or pushed-out terminals. Repair as necessary. Perform TEST VER-2. If PCM connector terminals are okay, go to next step.
Using scan tool in ohmmeter mode, check resistance of Crankshaft Position Sensor (CKP) connector, 8-volt supply circuit (Orange wire). If resistance is less than 5 ohms, repair short to ground in Orange or White/Black wire. Perform TEST VER-2.
If resistance is more than 5 ohms, check resistance of 8-volt supply circuit (Orange wire) between CKP sensor harness side connector and PCM connector terminal No. 7 using an external ohmmeter. If resistance is more than 5 ohms, repair open Orange or White/Black wire. Perform TEST VER-2. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2.