Archived Throwing Codes HELP

[p-Bar]

I had a small oil leak at the filter housing, repaired and gunked the engine hosed off with water now I am throwing 2 codes



PO480 cooling fan 1 control circuit

PO243 Waste gate pressure control PWM

and A/C doesn't work



pulled the connectors A/C and cleaned with WD40

pulled the waste gate connector cleaned with WD40

reset with Smarty Jr. still throwing codes

checked fuse for A/C and switched the ac relay with fog lamp relay. any ideas?? I think the A/C doesn't work due to the fan circuit not working. Is this a dealer reset with DRB III. ?

 

[Missouri Mule]

I would try a contact cleaner that dries on the connectors that probably got wet.

 

[p-Bar]

I would try a contact cleaner that dries on the connectors that probably got wet.

Would have thought the WD would of displaced the water.

 

[Missouri Mule]

The use of contact cleaner would be an extra edge just in case the WD-40 did not get rid of all the moisture.

 

[Bob4x4]

Any voltage drops are a problem in computer controlled systems. All connectors have to be in very good condition for the correct values to be seen.



Bob

 

[p-Bar]

Any voltage drops are a problem in computer controlled systems. All connectors have to be in very good condition for the correct values to be seen.



Bob

Thanks Bob needed to here that . I will look at them . Where is the cooling fan plug located??

 

[p-Bar]

still could use some other ideas

 

[Bob4x4]

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)

 

[p-Bar]

Thanks alot Bob thats what I needed. Will update you when I do the diagnostics. Thanks again

 

[p-Bar]

Bob , went through the troubleshooting you gave checked the impedance of the solenoid and it was within limits, so did the next test with checking the output from the ECM and no power. Used the service manual to find F504 fused ignition, which was #36 fuse, this stopped the A/c and cooling fan from running. What is this diagnostic manual you have ? is it different than the service manual ? Thanks again for "leading me to the water".

 

[Bob4x4]

I use an insiders secure site. It is very close to some of our manuals. The manuals now days have volumes. It all won't fit in a single book



Bob