Alright... With these sequential codes, the search that I have come up with shows that there has been a few of thes cases within the chrysler site. It involves checking mostly wiring to and from your injection pump and lift pump. Here is what chrysler reccommends testing with these codes.
Inspect the wiring and connectors at the ECM and fuel lift pump. Check terminals on fuel lift pump connections for corrosion. Moisture and dirt can cause excessive resistance in connections due to corrosion. Load test the fuel lift pump power and ground at the fuel lift pump connector using a head light as a load. If code P1689 is setting, load test the injection pump power and ground at the injection pump connector using a head light as a load. Before replacing any parts check battery connections, body and ECM grounds. Check the Gray connector near the passenger side battery.
Let me know if you have any other questions.
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Alright. This is where I think you are having your problem is between your ecm and your injection pump. This is the flow chart I want you to follow. Let me know if you have any issues.
1 Turn the ignition off.
Disconnect the VP44 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the Fuel Injection Pump relay output circuit in the Fuel
Injection Pump harness connector.
Is the voltage at least 8.0 volts?
Yes ! Go To 4
No ! Refer to symptom P0215-FUEL INJECTION PUMP CONTROL
CIRCUIT in the DRIVEABILITY category.
2 Turn the ignition off.
Disconnect the ECM harness connector.
Using a 12-volt test light connected to 12-volts, check the Fuel Injection Pump
The test light must illuminate brightly. Compare the brightness to that of a direct
connection to th
Yes ! Go To 5
No ! Repair the ground circuit for an open or high resistance.
3 Turn the ignition off.
Measure the resistance of the Datalink (+) circuit between the VP44 harness
connector and the ECM harness connector.
Is the resistance below 5.0 ohms?
Yes ! Go To 6
No ! Repair the open Datalink (+) circuit.
4 Turn the ignition off.
Measure the resistance between ground and the Datalink (+) circuit.
Yes ! Repair the Datalink (+) circuit shorted to ground.
No ! Go To 7
5 Turn the ignition off.
Measure the resistance of the Datalink (-) circuit.
Yes ! Go To 8
No ! Repair the open Datalink (-) circuit.
Turn the ignition off.
6 Measure the resistance between ground and the Datalink (-) circuit.
Yes ! Repair the Datalink (-) circuit shorted to ground.
No ! Replace the ECM.