Here are Chryslers Diagnostics.(You will need a scan tool)
Be sure there are no mis-fire codes, any mis-fire will cause the PCM to shut down the injector control circuit for that cylinder.
Disconnect the Fuel Injector harness connector.
Ignition on, engine not running, with the DRB3(Chryslers Scanner) actuate the ASD relay.
With a 12 volt test light connected to ground probe the (K342) ASD relay output circuit at the injector harness connector.
Does the test light illuminate brightly?
NO, repair the ASD relay output circuit for an open or short to ground.
YES.
Reconnect injector harness. Using a 12 volt test light connected to 12 volts backprobe the injector driver circuit and with the DRB actuate the injector.
What is the state of the test light?
Blinking or flickering? Replace fuel injector
On constantly, go to step 4
Off constantly, go to step 5
STEP 4, Turn ignition off, disconnect PCM connectors, measure resistance between the fuel injector control circuit and ground at the injector harness.
Is the resistance below 100 ohms?
YES, Repair injector control circuit for short to ground
NO, go to step 6
STEP 5, Turn ignition off and disconnect PCM connectors, measure resistance of injector control circuit between injector harness and PCM connector.
Is the resistance below 5 ohms?
NO, repair the open in the injector control circuit
YES, go to step 6
STEP 6
NOTE! Before continuing check the PCM harness connector terminals for damage, corrosion or push out and repair as needed.
Using the schematics as a guide, inspect the wire harness and connectors paying particular attention to the power and ground circuits.
If there are no possible causes remaining ;
Replace and Reprogram PCM.
Does this sound more like what those codes mean or am I way off?
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Friday, November 14th, 2008 AT 11:15 AM
