Electrical - Memory Systems Diagnostics
NUMBER: 08-002-08GROUP: Electrical
DATE: January 31, 2008
THIS BULLETIN SUPERSEDES SERVICE BULLETINS 08-012-06 REV A, DATED APRIL 13, 2006, 08-031-05, DATED JUNE 18, 2005 AND 08-029-04, DATED AUGUST 10, 2004 WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN INCLUDED.
SUBJECT:
Front Power Memory, Heated Seats and/or Adjustable Pedals Performance
OVERVIEW:
This bulletin involves performing several checks of electrical components and checking the Memory Heated Seat Adjustable Pedal Module for current part number and if need be, replace module.
NOTE:
Fully familiarize yourself with the contents of this bulletin before proceeding.
^ Vehicles built on or before July 5, 2005 (MDH0705XX) (2005 Model Year and earlier) may have an ungrounded upper seat track that can cause the Memory Heated Seat Adjustable Pedal Module to "lock up and become non-responsive.
^ Vehicles built on or before December15, 2005 (MDH1215XX) may have a loose connection in the Integrated Power Module (IPM) that may cause circuit interruption for the power feed to the Memory Heated Seat Adjustable Pedal Module.
^ Static electricity generated in the drivers seat may discharge through the Memory Heated Seat Adjustable Pedal Module causing it to "lock up and become non-responsive.
^ Memory Heated Seat Adjustable Pedal Modules can not be reprogrammed (Flashed) at this time. If the module number is not up to date, module replacement is required.
MODELS:
2004 - 2008 (CS) Pacifica
SYMPTOM/CONDITION:
The front power memory, heated seats and/or adjustable pedals may exhibit one or more of the following Symptom/Conditions:
^ Heated seats do not get warm enough.
^ Module may become non-responsive (lock up) and the system becomes inoperative.
^ Become inoperative due to a spread electrical terminal in the Integrated Power Module (IPM).
^ Become inoperative due to a seat track grounding issue.
DIAGNOSIS:
1. Open drivers side rear door and using a mirror, look under front seat. Inspect for upper seat track ground on inboard side.(Fig. 9 ), callout # 2 and # 3 for location of ground wire and connection. Is ground wire connection present on upper seat track?
a. Yes >>> SEAT TRACK GROUNDING REPAIR PROCEDURE will NOT need to be performed. Continue with
b. No >>> SEAT TRACK GROUNDING REPAIR PROCEDURE below WILL need to be performed as described later in this bulletin. Continue with below.
2. Check vehicle build date. Was the vehicle built AFTER December 15, 2005 (MDH1 205XX)?
a. Yes >>> proceed to Step # 1 of: CHECK MODULE PART NUMBER procedure.
b. No >>> continue with Step # 3 below.
3. Open the hood.
4. Disconnect and isolate the battery negative cable.
5. Remove the hood cable retaining clip near the 1PM.
6. Using a flat bladed tool, depress the four locking tabs on the side of the 1PM to release it from it's mount (Fig. 1).
7. Viewing the 1PM from the bottom, disconnect the white, 15 way C8 connector from the IPM.
8. Locate cavity 15 of the C8 connector (Fig. 2).
9. Insert the male terminal gauge, supplied in the parts kit for the body wiring harness repair, into cavity 15 of connector C8.
10. Does the male terminal gauge fit loosely in cavity 15?
a. Yes >>> proceed to Step # 1 of: IPM CONNECTOR REPAIR PROCEDURE below.
b. No >>> continue with Step # 11.
11. Connect the White C8 connector to the IPM.
12. Position 1PM into place, and lock into position.
13. Install the hood cable retaining clip.
14. Connect the negative battery cable.
NOTE:
System has been "re-booted" due to battery disconnect.
15. Test the Power Seat System (i.e. driver and passenger power seats, adjustable pedals (if equipped), memory (if equipped) and front heated seats (if equipped).
16. Does the Power Seat System function properly?
a. Yes >>> proceed to Step # 1 of: CHECK MODULE PART NUMBER procedure.
b. No >>> Refer to the detailed diagnostic information available in TechCONNECT, under: Service Info, 8 > ELECTRICAL > POWER SEATS > DIAGNOSIS & TESTING.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
IPM CONNECTOR REPAIR PROCEDURE:
1. Replace the spread terminal in cavity 15 as follows:
2. Disassemble the C8 connector in order to remove the female terminal from cavity 15.
3. Cut the spread terminal off of the body wiring harness allowing enough wire length to solder the new wire jumper, provided in the kit, onto the wiring harness.
4. Remove one-half (1/2) inch of insulation from the wire jumper, provided in the repair kit, from the body harness wire.
5. Place a piece of adhesive lined heat shrink tubing, provided in the repair kit, on one side of the wire.
6. Place the strands of wire overlapping each other inside of the splice band (Fig 3).
7. Using crimping tool, Mopar p/n 05019912AA, crimp the splice band and wires together (Fig 4).
8. Solder the connection together using rosin core type solder only (Fig 5).
CAUTION:
Do not use acid core solder.
9. Center the heat shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of both ends of the tubing (Fig 6).
10. Insert the newly repaired terminal into cavity 15 of the White C8 IPM connector.
11. Connect the White C8 connector to the IPM.
12. Position 1PM into place, and lock into position.
13. Install the hood cable retaining clip.
14. Proceed to Step # 1 of: CHECK MODULE PART NUMBER procedure.
CHECK MODULE PART NUMBER:
1. Using the scan tool, determine if the Memory Heated Seat Adjustable Pedal Module is locked up or non-responsive. Is the Memory Heated Seat Adjustable Pedal Module is locked up or non-responsive?
a. Yes >>> continue with Step # 2.
b. No >>> proceed to Step # 6.
2. Open the hood and locate the 40 amp cartridge fuse located in cavity 8 of the IPM.
3. Remove the fuse and wait 20 seconds and then reinstall the fuse to Re-Boot the seat module.
4. Using the scan tool, determine if the Memory Heated Seat Adjustable Pedal Module is locked up or non-responsive. Is the Memory Heated Seat Adjustable Pedal Module is locked up or non-responsive?
a. Yes >>> continue with Step # 5.
b. No >>> proceed to Step # 6.
5. Using a DVOM, voltage drop test the 2 way (power and ground) connector on the Memory Heated Seat Adjustable Pedal Module for proper power and ground. Is a proper power and ground supplied to module?
a. Yes >>> continue with Step # 6.
b. No >>> Repair wiring as needed THEN continue with Step # 6.
6. Check the Memory Heated Seat Adjustable Pedal Module part number using the scan tool and record the part number listed on the module on the repair order.
NOTE:
If the Memory Heated Seat Adjustable Pedal Module part number CANNOT be retrieved with the scan tool, record the number printed on the module on the repair order.
7. Use the table to determine your course of action:
MEMORY HEATED SEAT ADJUSTABLE PEDAL MODULE REPLACEMENT
PROCEDURE:
1. Disconnect and isolate the negative battery cable.
NOTE:
Module replacement does not always require seat removal. If seat is adjusted too low and access to module is hindered, seat removal is recommended. If module can be accessed and SEAT TRACK GROUNDING is not required, seat does not need to be removed. Proceed to Step 8 below.
2. Raise and support vehicle.
3. If necessary, remove vapor canister to gain access to the seat anchor nuts. Refer to the detailed service information available in TechCONNECT, under: Service Info, 25 - EMISSIONS CONTROL> EVAPORATIVE EMISSIONS > VAPOR CANISTER> REMOVAL.
4. Remove four nuts attaching the seat to the floor pan.
5. Lower the vehicle to access the seat.
6. Remove the headrest from seat.
7. Pull the seat rearward and tip the seat so that the top of the seat is resting on the steering wheel. This will allow access to the bottom of the seat.
8. Disconnect the module wire connectors.
9. Remove the memory heated seat adjustable pedal module attaching screws.
10. Remove the module from under drivers seat.
11. Position the appropriate new Memory Heated Seat Adjustable Pedal Module under the drivers seat and fasten it to the seat.
12. Connect the electrical connectors to the module.
13. Inspect for upper seat track ground. Refer to (Fig 9), callout # 2 and # 3 for location of ground connection. Is ground wire connection present on upper seat track?
a. Yes >>> proceed to Step # 13 SEAT TRACK GROUNDING REPAIR PROCEDURE below.
b. No >>> proceed to Step # 8 SEAT TRACK GROUNDING REPAIR PROCEDURE below.
SEAT TRACK GROUNDING REPAIR PROCEDURE:
NOTE:
Seat must be removed to perform this procedure.
1. Raise and support vehicle.
2. Disconnect and isolate the negative battery cable.
3. If necessary, remove vapor canister to gain access to the seat anchor nuts. Refer to the detailed service information available in TechCONNECT, under: Service Info, 25 - EMISSIONS CONTROL> EVAPORATIVE EMISSIONS > VAPOR CANISTER > REMOVAL.
4. Remove four nuts attaching the seat to the floor pan.
5. Lower the vehicle to access the seat.
6. Remove the headrest from seat.
7. Lift and tip the seat forward, (Fig 7), to access wire connector under seat and disconnect wire connectors. Pull the seat rearward and tip the seat so that the top of the seat is resting on the steering wheel. This will allow access to the bottom of the seat.
8. Locate the existing hole on the inboard side of the upper seat track. Fasten the ground eyelet to the seat track side member using the screw and nut provided in kit, p/n 05183713AA. Position the bolt on the outboard side of the rail and the nut on the inboard side of the rail. Tighten the nut to 10 N.m (88 in. lbs.) (Fig 9).
9. Locate and unplug the Gray 16-way C2 connector on the Memory/Heated Seat Adjustable Pedals module (Fig 9).
10. Examine cavity 16 of the C2 connector. Is there a LG/OR wire in cavity 16 of the C2 connector? (Fig 8)
a. Yes >>> Remove the wire terminal from the connector and tape the wire back to the wiring harness ensuring the terminal is completely covered with tape. >>> continue with Step # 11.
b. No >>> continue with Step # 11.
11. Insert the wire provided in the kit, p/n 05183713AA, into cavity 16 of the C2 connector. Route the wire along the main seat harness bundle and secure the wire to the harness using electrical tape (Fig 9).
12. Place the driver's front seat into position for installation and reconnect electrical connectors to the Memory/Heated Seat Module.
13. Place front seat studs into mounting holes.
14. Install the seat headrest.
15. Raise and support vehicle.
16. Install four nuts attaching seat to floor pan. Tighten nuts to 88 N.m (65 ft. lbs.).
17. If necessary, install vapor canister.
18. Lower the vehicle.
19. Connect battery negative cable.
20. Test the Power Seat System (i.e. driver and passenger power seats, adjustable pedals (if equipped), memory (if equipped) and front heated seats (if equipped).
21. Does the Power Seat System function properly?
a. Yes >>> proceed to Step # 22.
b. No >>> Refer to the detailed diagnostic information available in TechCONNECT, under: Service Info, 8 - ELECTRICAL > POWER SEATS > DIAGNOSIS & TESTING.
22. Close the hood.
23. Reposition the seat and reset the clock.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.