20 Most Recent 2003 Jeep Grand Cherokee - Page 2 Questions & Answers

indicates a bad ground /loose ground or dirty battery terminals

DTC P0243 - Turbo/Super Charger Wastegate Solenoid A
Description: Open or shorted condition detected in the turbocharger wastegate solenoid control circuit.


Here is the flow chart for that code (some images could need to clicking for zoom)...

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).

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).

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).



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).


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).

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).


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).

No
Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

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

Keep us updates.

Power steering Belt or pump pulley. Could be that turning left puts more stress on your system then turning right and that's why you only hear it while turning left.

problem ground for the dash units

Yes they are.

run the fault codes servo/ solenoid. or sensor problems

You don't need to go by auto zone to have codes check ! Chrysler , Dodge and jeep vehicle's can be checked without a scanner ! Turn the key on then off then back on then off again an then on an leave it on . Check in the odometer an it will show P codes ,then it will show done ! What size engine does it have ? 4.0 or 4.7 L Fuse #17 10 amp located in the junction block powers pin #16 at the DLC . This would power up a scan tool . Not a PCM fuse ! Your vehicle does not have a separate control module for the transmission ,it is part of the PCM - powertrain control module ! Jeep vehicles with stalling an idle going high then low ( surging ) is caused most of the time by a bad TPS - throttle position sensor ! An don't use one from the aftermarket , use factory parts !

code p 0340 refers to cam shaft position sensor(CMP) sensor A bank 1--circuit malfunction====causes --wiring-- CMP sensor-- ECM code p 0700 refers to transmission control system/ MIL--malfunction===causes --wiring---TCM parts are available on line from e-bay , wreckers , junk yards manufacturer spares departments and would be delivered within 30 days so why are you waiting 7 months to get parts

P1499 Jeep Hydraulic Cooling Fan Solenoid Circuit Condition

go to your desired station ex 99.9 and hold down 1 on the preset line til it beeps.

The body control module is the cause of your weird problems. Replace it.

good one, love these kinds of failures. are you in the salt belt (wiki that) dont buy no name lamps, (from china) they make a bad product, cheap and poor. also check alternator voltage 15vdc max, if more lamps can burn out. only 3 causes, voltage, junk from china, or wild crazy vibration. id say its not that last one, no? we shot huge guns in the Navy and blew lamps and fuses like mad. So, know a thing or 2. your lamps seem to be modified some one put in the wrong lamps. easy to do sure. wj jeeps. brakes, not park not reverse not blinks only brakes right not tails , tails means PARK. most glove box operators guides tell you what to use. ever read it? or here, SM chapter 8L lamp 3157 go here click WJ then click lamps read page 5

Go to Car Part com Used Auto Parts Market input your information and click search by distance and input your zip code.

Check the black fuse box under the hood near the battery ! Check it out on you tube !

Your probably running hot or you need antifreeze !