PCM - Idle Roughness/Steering Wheel Shake
NO: 18-07-94 Rev. AGROUP: Vehicle Performance
DATE: Jul. 22, 1994
SUBJECT:
Idle Roughness Accompanied by Steering Wheel Shake
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-07-94 DATED APR. 29, 1994 WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS BULLETIN REVISES STEP 15 AND 20. THE CHANGES ARE HIGHLIGHTED WITH **ASTERISKS** .
MODELS:
1995 (PL) Neon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES BUILT PRIOR TO APRIL 6, 1994 (MDH 04-06-XX).
SYMPTOM/CONDITION:
Rough running engine during idle accompanied by steering wheel shake.
DIAGNOSIS:
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) with the appropriate Diagnostic Procedure Manual, verify that all engine systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order for future reference, repair as necessary, and also perform the following repair.
If no codes are present and all systems are functioning correctly, perform the following repair.
EQUIPMENT/PARTS REQUIRED:
NOTE:
THE MOPAR DIAGNOSTIC SYSTEM IS REQUIRED TO PERFORM THE FOLLOWING REPAIR AND THE SYSTEM MUST BE OPERATING WITH RELEASE 13 OR HIGHER.
REPAIR PROCEDURE:
This repair involves selectively erasing and reprogramming the powertrain control module with new software (calibrations), installing a steering wheel damper, replacing the steering wheel clockspring, and, on air conditioning equipped cars, replacing the cooling module lower mounting bushings.
1. Place the front road wheels in the straight ahead position. Rotate the steering wheel one half turn (180 degrees) to the right (clockwise). Lock the column with the ignition lock cylinder.
WARNING:
BEFORE BEGINNING ANY AIR BAG SYSTEM COMPONENT REMOVAL OR INSTALLATION PROCEDURE, DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE. THIS WILL DISABLE THE AIR BAG SYSTEM. FAILURE TO DISCONNECT THE BATTERY COULD RESULT IN ACCIDENTAL AIR BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY. ALLOW SYSTEM CAPACITOR TO DISCHARGE FOR 2 MINUTES BEFORE REMOVING ANY AIR BAG COMPONENTS.
2. Disconnect and isolate the battery negative cable. Wait two minutes for the reserve capacitor to discharge.
3. Speed Control Equipped - Remove the two attaching screws for each speed control switch and disconnect the two way electrical connectors. Remove the speed control switches.
Non-Speed Control Equipped - Remove the two attaching screws for each pod cover and remove the covers.
4. Remove the 4 screws attaching the steering column cover to the lower instrument panel and remove the trim panel.
5. Remove the 3 screws attaching the steering column cover liner and remove from the lower instrument panel.
6. Remove the 2 air bag module attaching screws from under the steering wheel.
WARNING:
WHEN HANDLING AN UNDEPLOYED AIR BAG MODULE DURING SERVICING OF THE STEERING COLUMN, THE FOLLOWING PRECAUTIONS SHOULD BE OBSERVED. AT NO TIME SHOULD A SOURCE OF ELECTRICITY BE PERMITTED NEAR THE INFLATOR ON THE BACK OF THE AIR BAG MODULE. WHEN CARRYING A LIVE MODULE, THE TRIM COVER SHOULD BE POINTED AWAY FROM THE BODY TO MINIMIZE INJURY IF THE MODULE ACCIDENTALLY DEPLOYS. IF AN AIR BAG MODULE IS PLACED ON A BENCH OR OTHER SURFACE, THE PLASTIC COVER SHOULD BE FACE UP TO MINIMIZE MOVEMENT IN CASE OF ACCIDENTAL DEPLOYMENT.
7. Lift the air bag module and disconnect the clockspring electrical lead from the back of the module. Remove the air bag module.
8. Disconnect the clockspring electrical lead from the steering wheel horn switches and wiring harness.
9. Remove the steering wheel retainer nut from the steering column shaft.
10. Remove the steering wheel assembly from column shaft using Puller, Special tool C-3428-B.
CAUTION:
WHEN INSTALLING PULLER C3428-B, BE SURE BOLTS ARE FULLY SEATED IN THE THREADED PULLER HOLES ON THE STEERING WHEEL. DO NOT BUMP OR HAMMER ON THE STEERING WHEEL OR STEERING COLUMN SHAFT WHEN REMOVING WHEEL FROM THE STEERING COLUMN.
11. Lift up the instrument cluster top cover and the cluster bezel until the clips disengage and separate.
12. Insert a screw driver into the access hole at the lower shroud and depress the cylinder button while rotating the cylinder with the key inserted between the ON and START positions to disengage the cylinder from the column.
13. Pull the key cylinder out.
14. Remove the three lower to upper shroud attaching screws through the bottom of the lower shroud. Separate the upper and lower shrouds.
15. Disconnect the 2-way and 4-way connectors between the clockspring and the instrument panel wiring harness and at the base of the clockspring.
16. Unlatch and remove the clockspring assembly from the steering shaft. Discard the clockspring.
"NOTE:
WHEN INSTALLING A NEW CLOCKSPRING, MAKE SURE THE FRONT WHEELS ARE NOT MOVED.**
17. Install new clockspring. Remove the "T" pin from the clockspring and rotate the clock spring rotor one half turn (180 degrees) to the right (clockwise). Connect the clockspring to the instrument panel harness and ensure that the wiring is properly routed. Check the wiring connectors and locking tabs to make sure they are properly engaged.
18. Install the steering wheel ensuring the flats on the hub align with the clockspring.
Pull the horn lead, air bag and speed control leads through the larger slot.
19. Position the new damper weight as shown in Figure 1, and install the steering column shaft retaining nut and tighten until steering wheel is fully seated on the shaft. Torque the steering wheel retaining nut to 54 N-m (40 ft.lbs.).
20. Connect the clockspring lead to the horn switches. Route speed control leads (one to each speed control opening).
21. Install the air bag electrical lead from the clockspring into the connector on the back of the air bag module.
NOTE:
** BE SURE CONNECTOR IS SECURELY LATCHED INTO THE AIR BAG MODULE CONNECTOR AND THAT THE WIRE IS ORIENTED TOWARD THE BOTTOM OF THE AIR BAG.**
22. Continue installation of the components that were removed to gain access to the clockspring. Make sure original or correct attaching bolts are used.
23. Refer to the Air Bag System Check listed in the Neon Service Manual (Publication No. 81-270-5025) Page SM-4, to verify that Air Bag is installed and operating properly.
NOTE:
STEPS 23 THROUGH 26 ARE REQUIRED ONLY ON VEHICLES EQUIPPED WITH AIR CONDITIONING.
24. Remove the 2 upper radiator isolator bracket mounting screws. Loosen the radiator to battery strut attaching screw.
25. Raise the cooling module high enough to free the 2 lower mounting isolator bushings from the front crossmember and support the cooling module in this position.
26. Replace the 2 lower mounting isolator bushings with new bushings.
27. Install the cooling module into the lower mounting brackets. Install and tighten the 2 upper radiator isolator bracket mounting screws to 7.4 N-m (65 in.lbs.).
NOTE:
THE MOPAR DIAGNOSTIC SYSTEM IS REQUIRED TO PERFORM THE FOLLOWING STEPS AND THE SYSTEM MUST BE OPERATING WITH RELEASE 13 OR HIGHER.
28. Connect the Mopar Diagnostic System (MDS) and DRBIII Scan Tool to the vehicle and power them up.
29. Use the arrow keys and select # 2 MDS DIAGNOSTICS on the DRBIII MAIN MENU Screen.
30. Use the arrow keys and select DIAGNOSTIC MENU on the MDS, then press NEXT MENU.
31. Use the arrow keys and select CONTROLLER PROGRAMMING on the MDS, then press NEXT MENU.
32. Use the arrow keys and select PROGRAM CONTROLLER PART on the MDS, then press NEXT MENU.
33. Follow the steps presented on the MDS and DRBIII which will allow the DRBIII to obtain the current part number of the controller.
34. The MDS will display the part number of the controller on the vehicle and the appropriate replacement part number, then press NEXT MENU to begin programming.
If the controller on the vehicle cannot be programmed or has already been programmed, a NO UPDATES AVAILABLE message will be displayed. Check the part number of the controller on the vehicle and compare it to the part number displayed. If the controller has already been updated, proceed to step 36.
35. The MDS and DRBIII will prompt for any operator action needed during the remainder of the programming process.
NOTE:
THE FOLLOWING STEPS ARE REQUIRED BY LAW.
36. Type the necessary information on the "Authorized Software Update Label" and attach it to the PCM and cover label with a clear plastic sticker.
37. Type the necessary information on the Authorized Modification Label and attach the label near the VECI Label.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: 08-19-40-95 1.2 Hrs.
FAILURE CODE: FC - Flash Module