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ORIGINAL: kurts2

Ok here is the entire "Failure To Start Test" for a 97 Intrepid/ Concord/ LHS/ Vision.  Follow this first and see where it leads you.  Let me know.

FAILURE-TO-START TEST
See Figure 1

This no-start test checks the camshaft position sensor and the crankshaft position sensor. Refer to the ignition coil tests before commencing with this test, much time may be saved if the problem lies within the coil.

The PCM supplies 8.0 volts to the camshaft position sensor and crankshaft position sensor through one circuit. If the 8.0 volt supply circuit shorts to ground, neither sensor will produce a signal (output voltage to the PCM).

When the ignition key is turned and left in the ON position, the PCM automatically energizes the Auto Shutdown (ASD) relay. However, the PCM de-energizes the relay within one second because it has not received a crankshaft position sensor signal indicating engine rotation.

During cranking, the ASD relay will not energize until the PCM receives a crankshaft signal. Secondly, the ASD relay remains energized only if the PCM senses a camshaft position sensor signal immediately after detecting the crankshaft position sensor signal.

Check battery voltage with a voltmeter. Make sure to always attach the positive voltmeter wire to the positive (+) terminal of the component being checked. Do the same with the negative - wire also. Voltage for the battery should be approximately 12.66 volts or higher to perform the failure-to-start test.

Unplug the harness connector from the coil pack.

Connect a test light (or voltmeter) to the B+ (battery voltage) terminal of the coil electrical connector and ground. The wire for the B+ terminal is dark green with a orange tracer. 


Fig. 1: Attach the 12 volt test light to the B+ (battery voltage) terminal of the coil electrical connector and ground

Ok, Here I tried to insert this nice picture of the test light with the probe in the pin (B+) and the other end of the light attached to a ground.  I can't get the picture in!!

Turn the ignition key to the ON position. The test light should flash on and then off. DO NOT turn the key to the OFF position; leave it in the ON position.

If the test light flashes momentarily, the PCM grounded the ASD relay. Proceed to Step 5.

If the test light did not flash, the ASD relay did not energize. The cause is either the relay itself or one of the relay circuits. Test the circuits for a ground or open circuit. If you have a DRB scan tool, this is where you would need it to check the circuits.  (We may be able to isolate the faulty circuit with an ohm meter and lots of work, or if this is the fault, you could pay a mechanic with the proper equipment to test these circuits.  We will cross that bridge when we come to it.)

Crank the engine. If the key was placed in the OFF position after Step 4, turn the ignition to the ON position before cranking the engine. Wait for the test light to flash once, then crank the engine.

If the test light momentarily flashes during cranking, the PCM is not receiving a camshaft position sensor signal. Test the camshaft position sensor circuits for a ground or open circuit. Since Chrysler does not give a procedure for testing the camshaft position sensor with a voltmeter, ohmmeter or test light, have the component tested at a reputable automotive service center familiar with Chrysler vehicles.

If the test light did not flash during cranking, unplug the camshaft position sensor connector. Turn the ignition key to the OFF position. Turn the key to the ON position, wait for the test light to momentarily flash once, then crank the engine. If the test light momentarily flashes, the camshaft position sensor is shorted and must be replaced with a new one. If the light did not flash, the cause of the no-start is in either the crankshaft position sensor/camshaft position sensor 8.0 volt supply circuit, or the crankshaft position sensor 5 volt output or ground circuits. Have the crankshaft position sensor checked, after checking the sensor circuits for a ground or open circuit.