I have had this code and engine light lit for over a month now and nothing I've done will rectify situation. When it first lit up I removed wire connector from turbo and installed the fooler that I had gotten from II a few years ago. That did not work. I check the ohms of that fooler and it was 150ohms resistance. Someone told me it should be 100 ohms so I picked up some 1w 100 ohms resistors and installed one on the plug and still have the same code. I've cleaned all connections multiple times with contact cleaner. Today I checked voltage of the wires with resistor removed and with key on I'm getting 12.x volts at one female pin and nothing on other. Does anyone know if this is correct? Any and all help appreciated. Truck runs fine but I don't think I'm seeing proper boost levels (nothing above 20psi or so).
Thanks

 

what happened to the response that was here???? I couldn't look at it while at work and now it's gone???? what's going on in this place lately...

 

What mods do you have? Hard to say where to start without that. Do you have the factory plastic CAC?

 

Sorry, I went to edit it and del by mistake here you go.

P0243-WASTEGATE PRESSURE CONTROL PWM




For a complete wiring diagram Refer to Section 8W.

When Monitored:
When the ignition is on.

Set Condition:
The ECM detects an open or short circuit in the Wastegate solenoid circuit.

Possible Causes
DAMAGED WIRING HARNESS OR CONNECTORS
WASTEGATE SOLENOID
(F504) FUSED IGNITION SWITCH OUTPUT OPEN
(K139) WASTEGATE SOLENOID DRIVER CIRCUIT OPEN
(K139) WASTEGATE SOLENOID CIRCUIT SHORTED TO GROUND
(K139) WASTEGATE SOLENOID DRIVER SHORTED TO VOLTAGE
(K139) WASTEGATE SOLENOID DRIVER CIRCUIT SHORTED TO ANOTHER CIRCUIT
ECM
INTERMITTENT CONDITION


Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

Diagnostic Test
1. DAMAGED WIRING HARNESS OR CONNECTORS

--------------------------------------------------------------------------------



Turn Ignition off.
Disconnect the ECM harness connectors.
Disconnect the Wastegate Solenoid harness connector.

NOTE: Check connectors - Clean/repair as necessary.



Are any wires or pins damaged?

Yes
Repair or replace any damaged wire or connectors.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Go To 2



2. WASTEGATE SOLENOID

--------------------------------------------------------------------------------



Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.
Turn the Ignition on, engine not running.
Disconnect the Wastegate Solenoid harness connector.
Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.



Does the light illuminate brightly after 30 seconds of being connected?

Yes
Replace the Wastegate Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Go To 3



3. (F504) FUSED IGNITION SWITCH OUTPUT OPEN

--------------------------------------------------------------------------------



Connect an test light between the Wastegate Solenoid connector Fused ignition switch output circuit and battery negative.
Compare the test light brightness to that of a direct connection to the battery.

Does the light illuminate brightly?

Yes
Go To 4

No
Repair the open (F504) Fused Ignition switch output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)



4. (K139) WASTEGATE SOLENOID DRIVER CIRCUIT OPEN

--------------------------------------------------------------------------------



Disconnect the ECM harness connectors.
Measure the resistance of the Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and the ECM harness connector.

Is the resistance less than 10 Ohms?

Yes
Go To 5

No
Repair the open (K139) Wastegate Solenoid control circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)



5. (K139) WASTEGATE SOLENOID CIRCUIT SHORTED TO GROUND

--------------------------------------------------------------------------------



Measure the resistance of the (K139) Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and battery negative.

Is the resistance less than 10 Ohms?

Yes
Repair the (K139) Wastegate solenoid circuit shorted to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Go To 6



6. (K139) WASTEGATE SOLENOID DRIVER SHORTED TO VOLTAGE

--------------------------------------------------------------------------------



Measure the voltage between the (K139) Wastegate Solenoid driver circuit at the Wastegate Solenoid connector and battery negative.

Is the voltage less than 1 volt?

Yes
Go To 7

No
Repair the (K139) Wastegate solenoid driver shorted to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)



7. (K139) WASTEGATE SOLENOID DRIVER CIRCUIT SHORTED TO ANOTHER CIRCUIT

--------------------------------------------------------------------------------



Measure the resistance between the (K139) Wastegate Solenoid driver circuit in the ECM harness connector and all other circuits in the ECM harness connectors.

Is the resistance less than 10 Ohms?

Yes
Repair the (K139) Wastegate solenoid circuit shorted to another circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Go To8



8. WASTEGATE SOLENOID

--------------------------------------------------------------------------------



Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.
Turn the Ignition on, engine not running.
Disconnect the Wastegate Solenoid harness connector.
Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.



Does the light illuminate brightly after 30 seconds of being connected?

Yes
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

No
Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

 

Wiring diag

 

Check the harness on the pin that is not showing anything. That is correct because its a feedback part of the loop.

The harness could be open or shorted back to the ECU or possibly the ECU has issues.

You should be able to get your boost back by crimping the WG actuator hose on the stock turbo, or, an aftermarket turbo would not be effected. If thats all the boost you get reagrdless, it sounds suspiciously like the ECU is defueling.

 

Thanks guys... been too busy and it's been raining here TOO much to do anything... I'll report back with what I've found soon hopefully.