080799 - WJJeeps.com
Contents
1. Fig 10 PDC Relay Cassette Terminal Remove install ASSEMBLY PDC RELAY CASSETTE 1 Move the faulty PDC relay cassette with its wiring away from the bottom of the PDC housing far enough to allow the replacement relay cassette to be installed into the PDC 2 Using the faulty relay cassette as a guide be certain that the replacement relay cassette is correctly oriented before installing it into the PDC housing 3 From the bottom of the PDC housing align and insert the replacement relay cassette into the PDC Press the relay cassette up into the PDC until both of the latches are fully engaged CAUTION Proper care must be taken to be certain that the wiring and terminals from the faulty PDC relay cassette are installed in the correct terminal cavities of the replacement relay cassette To prevent mistakes it is recommended that the wiring and terminals be removed from the faulty relay cassette one cavity at a time repaired or spliced as necessary then installed securely into the correct cavity of the replacement relay cassette If you are not absolutely certain into which cavity a terminal should be installed refer to Power Distribution in the index of the service manual for the location of complete circuit diagrams covering the PDC 4 While pulling gently on the wire from the bottom of the faulty PDC relay cassette use a terminal pick tool Special Tool Kit 6680 from the top of the relay cassette to release the latch that sec2. THE PROCEDURE AND AN INCORRECT CABLE CONNECTOR THE REVISION IS HIGHLIGHTED WITH ASTERISKS OVERVIEW This bulletin involves flash reprogramming the Body Control Module BCM SYMPTOM CONDITION The outside temperature reading displayed in the overhead console can in certain low speed driving situations display an incorrect value The system was originally programmed to delay the temperature update in the module if you were for example stuck in traffic This was done to avoid the effect of road temperatures or engine compartment heat from influencing the temperature reading One example of a situation that can occur is when a vehicle is parked in a garage in cold temperatures The garage could be 20 degrees warmer than the outside air temperature If the vehicle was started and did not reach speeds over 25 MPH the display will update at start up and may not update again until the vehicle reached speeds over 25 MPH This would cause a 20 degree discrepancy on the display New programming has been implemented in the Body Control Module BCM to reduce the likelihood of this occurrence DIAGNOSIS Connect the DRB III to the vehicle diagnostic connector using cable CH 7001 From the DRB III main menu select 1 DRB I Standalone From the DRB I select 1999 Diagnostics From the diagnostic menu select Body From the Body menu select Body Computer From the Body Computer options select Module Display Check the Vers
3. the PDC relay cassette 4 From the top of the PDC housing remove the relay wedge from the PDC relay cassette Fig 7 RELAY WEDGE TYPICAL Fig 7 PDC Relay Wedge Remove Install PDC RELAY CASSETTE 1 Remove the relay wedge from the PDC relay cassette to be removed NOTE It may be necessary to remove relay cassettes that are not being serviced from the PDC housing in order to obtain sufficient clearance to access the faulty relay cassette The same service procedure is repeated as necessary to remove each of the interfering relay wedges and relay cassettes from the PDC housing 2 From the top of the PDC housing use a small screwdriver or a terminal pick tool Special Tool Kit 6680 to release the two latches that secure the relay cassette in the PDC Fig 8 LATCHES FROM SPECIAL TOOL KIT 6680 Fig 8 PDC Relay Cassette Latches 3 Gently and evenly press the relay cassette down through the PDC housing 4 From the bottom of the PDC housing remove the relay cassette from the PDC Fig 9 PDC HOUSING PDC RELAY Fig 9 PDC Relay Cassette Remove Install CAUTION Do not remove the wiring and terminals from the terminal cavities of the faulty PDC relay cassette at this time Refer to the Assembly procedure that follows for the proper procedures for transferring the wiring and terminals to the replacement PDC relay cassette TERMINAL CAVITIES PDC RELAY TYPICAL sae TYPICAL TERMINAL LATCHES Ae ae
4. BLY POWER DISTRIBUTION CENTER XJ TJ ZJ WJ The Power Distribution Center PDC cover the PDC housing lower cover the PDC relay wedges the PDC relay cassettes and the PDC B terminal stud module WJ only are available for service replacement Fig 1 and Fig 2 The PDC cover can be simply unlatched and removed from the PDC housing without the PDC being removed or disassembled Service of the remaining PDC components requires that the PDC be removed from its mounting and disassembled Refer to Wiring Repair in the index of this service manual for the location of the wiring repair procedures PIVOT COVER LATCHES HOOKS oo ea RELAY WEDGE PDC HINGE TYPICAL HOUSING PIN y ir re Bl RELAY sp TERMINAL CASSETTE STUD TYPICAL MODULE HARNESS LOWER COVER Hbi Fig 1 WJ Power Distribution Center components LATCH TERMINAL STUD cover PDC HOUSING LOWER COVER WIRE HARNESS TYPICAL ae oe ot Fig 2 XJ TJ ZJ Power Distribution Center components DISASSEMBLY PDC HOUSING LOWER COVER 1 For XJ TJ ZJ disconnect and isolate the battery negative cable For WJ remove the battery from the battery support Refer to Battery in the index of the service manual for the location of the battery removal procedures 2 Unlatch and remove the cover from the PDC 3 Remove the battery wire harness PDC take out eyelet s from the PDC B terminal stud s 4 Disengage the latches on the PDC mounting bracket from th
5. NUMBER 08 07 99 Technical Se rvice GROUP Electrical lt del DATE Mar 12 1999 SUBJECT Power Distribution Center PDC service OVERVIEW This bulletin announces the release of parts to repair the power distribution center MODELS 1996 1999 XJ Cherokee 1997 1999 TJ Wrangler 1996 1998 ZJ Grand Cherokee 1996 1998 ZG Grand Cherokee International markets 1999 WJ Grand Cherokee DISCUSSION A repair kit p n 05014460AA has been released which will provide a method for repairing the PDC when internal damage has occurred This will eliminate the need to replace the entire engine compartment wire harness in most situations where an electrical problem has been traced to an internal problem in the PDC The kit provides replacement components for the modules located in the PDC Special Tool number 6680 is required for these repairs This tool is available through Pentastar Service Equipment and is a required dealer tool The repair kit contains detailed instructions which have been included with this bulletin for our convenience PARTS REQUIRED 1 05014460AA PDC Repair Kit EQUIPMENT REQUIRED Special Tool 6680 Connector Terminal Picks POLICY Information Only Rom toe aos Hew 1 05 DaimlerChrysler Corporation Dealer Technical Operations INSTRUCTION SHEET K6855329 PDC REPAIR KIT 96 99 XJ CHEROKEE 97 99 TJ WRANGLER 96 98 ZJ GRAND CHEROKEE 99 WJ GRAND CHEROKEE DISASSEMBLY AND ASSEM
6. e tabs on the PDC housing and pull the PDC housing upward to disengage the mounting slots from the stanchions of the mounting bracket 5 Using a trim stick or another suitable wide fat bladed tool gently pry the latches on each side and one end of the PDC housing that secure the housing lower cover to the PDC and remove the housing lower cover Fig 3 and Fig 4 Fig 3 WJ PDC Housing Lower Cover Remove install PDC HOUSING LOWER COVER Fig 4 XJ TJ ZJ PDC Housing Lower Cover Remove Install PDC B TERMINAL MODULE WJ ONLY 1 Remove the PDC housing lower cover 2 From the top of the PDC housing use a small screwdriver or a terminal pick tool Special Tool Kit 6680 to release the two latches that secure the B terminal module in the PDC Fig 5 Fig 5 WJ PDC B Terminal Module Latches FROM PDC SPECIAL TOOL KIT 6680 POLISINI LATCHES 3 Gently and evenly press the two B terminal studs down through the bus bar in the PDC 4 From the bottom of the PDC housing remove the B terminal module from the PDC Fig 6 PDC HOUSING LATCHES Fig 6 WJ PDC B Terminal Module Remove Install PDC RELAY WEDGE 1 Remove the PDC housing lower cover 2 Remove each of the relays from the PDC relay wedge to be removed 3 From the bottom of the PDC housing use a small screwdriver or a terminal pick tool Special Tool Kit 6680 to release the two latches yellow that secure the relay wedge to
7. ion code If it is 19 no update is necessary If it is less than 19 perform the Repair Procedure to update the software NNDWRWN gt REPAIR PROCEDURE THIS REPAIR IS COMPATIBLE WITH DAIMLERCHRYSLER S MOBILE SERVICE PROGRAM AND DOES NOT REQUIRE HOISTS OR OTHER FULL SERVICE FACILITY SPECIAL EQUIPMENT 1 Connect the DRB I to the MDS2 using cables CH7025 and CH7035A 2 From the DRB III main menu select 2 Connect the MDS2 From the DRB III select 2 Run MDS2 application From MDS2 select YME session From MDS2 select 1999 WJ Grand Cherokee and the appropriate engine then click OK From MDS2 select Flash From MDS2 enter the TSB number and click on Show Updates From MDS2 highlight the available software update then click Download Software A pop up message will indicate that the download was successful when it does disconnect the DRB II from the MDS2 10 Connect the DRB III to the vehicle to be flashed using cable CH7001 11 From the DRB I main menu select 2 Connect to MDS2 12 From the DRB III select 2 Run MDS2 Application 13 From the DRB III select 2 Program Vehicle Controllers 14 The DRB IN will then highlight the BCM part number and status as loaded in DRB me 15 From the DRB III highlight the appropriate version then press enter and follow the instructions on the DRB III 16 After the programming is complete the DRB I will as
8. k if you want to reprogram another controller Select yes or no and follow the instructions on the screen BOS Sy ae NOTE SELECTING NO WILL ERASE THE FLASH PROGRAM FROM THE DRB III MEMORY ONLY SELECT NO IF THERE ARE NO OTHER CONTROLLERS TO BE FLASHED NOTE LABELS INDICATING THE NEW PART NUMBER ARE NOT REQUIRED FOR BODY CONTROL MODULE REPROGRAMMING POLICY Reimbursable within the provisions of the warranty TIME ALLOWANCE Labor Op No 08 19 60 91 0 2 Hrs FAILURE CODE Code Flash Module
9. ures the terminal in the relay cassette terminal cavity Fig 10 5 From the bottom of the faulty PDC relay cassette remove the wire and terminal from the relay cassette terminal cavity 6 Make all necessary repairs and splices to the wire for the removed terminal Refer to Wiring Repair in the index of this service manual for the location of the wiring repair procedures 7 From the bottom of the PDC housing align and insert the removed wire and terminal into the correct terminal cavity of the replacement relay cassette Push the wire and terminal up into the relay cassette terminal cavity until it is fully engaged by the latch 8 Repeat Steps 4 5 6 and 7 one wire and terminal at a time until each of the wires and terminals have been transferred from the faulty PDC relay cassette into the replacement relay cassette 9 Install the PDC relay wedge into the replacement PDC relay cassette PDC RELAY WEDGE 1 From the top of the PDC housing align and insert the PDC relay wedge latch arms into the correct cavities in the relay cassette 2 Gently and evenly press the PDC relay wedge down into the relay cassette until both of the latches are fully engaged NO 08 12 99 Rev A SUBJECT Electronic Vehicle Information Center EVIC temperature sensor display DATE Sep 24 1999 THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN NUMBER 08 12 99 DATED MAY 7 1999 WHICH SHOULD BE REMOVED FROM YOUR FILES THIS BULLETIN REVISES
Download Pdf Manuals
Related Search