Service Procedure
Service ProcedureRecord all the preset radio stations from the radio/
The ignition and the start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or it's components.
Open the hood and disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI.
If the vehicle is equipped with an auxiliary battery the auxiliary negative battery cable will also need to be disconnected.
When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Failure to observe the correct procedure may cause deployment of the SIR components and serious injury can occur. Failure to observe the correct procedure could also result in unnecessary SIR system repairs.
Disable the SIR system. Refer to SIR Disabling and Enabling in SI.
Remove the right side knee bolster panel. Refer to Passenger Knee Bolster Replacement in SI.
Remove the left side knee bolster panel. Refer to Driver Knee Bolster Replacement in SI.
Remove the left side knee bolster bracket. Refer to Driver Knee Bolster Bracket Replacement in SI.
Remove the IP lower center extension panel and compartment door. Refer to Instrument Panel Lower Extension Replacement in SI.
TIP
It is necessary to lower the complete steering column before the IP cluster trim plate bezel is removed.
Remove the IP cluster trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in SI.
Remove the radio. Refer to Radio Replacement in SI.
Remove the body control module (BCM) bracket. Refer to Body Control Module Replacement in SI.
Do NOT try to completely remove the blue terminal locking tab from the BCM connector X4 (1) or damage to the connector will result. The blue locking tab will slightly pop up when in the release position.
Disconnect the BCM connector X4 (black in color 25 cavities) (1) and release the blue locking tab in the connector using a small pick.
The proper gauge wire for each circuit must be used to maintain the designed circuit protection and terminal acceptance. The specified wire color should also be used for future serviceability.
Add circuits (5186 - orange wire and 5187 - yellow wire) left and right trailer turn signal lamps to the BCM. Refer to Trailer Connector/Provision Schematics in SI.
Obtain two 22 (0.35 m) gauge wires , one yellow wire, and one orange wire and cut the wires to 305 cm (10 ft) lengths.
Add terminal SNAC3-A02IT-M0.64 from Delphi tray 20 to one end of the orange wire (circuit 5186). Refer to Repairing Connector Terminals in SI.
Locate cavity 13 in the BCM connector X4 (black in color 25 cavities) as shown in the graphic above. Install the orange wire (circuit 5186) with terminal SNAC3-A02IT-M0.64 into cavity 13.
Add terminals SNAC3-A02IT-M0.64 from Delphi tray 20 to one end of the yellow wire (circuit 5187). Refer to Repairing Connector Terminals in SI.
Locate cavity 12 in the BCM connector X4 (black in color 25 cavities) as shown in the graphic above.
Install the yellow wire (circuit 5187) with terminal SNAC3-A02IT-M0.64 into cavity 12.
Seat the blue terminal locking tab and install the BCM connector X4 into the BCM module.
Install a piece of conduit 213 cm (7 ft) in length around the orange wire and yellow wire starting 31 cm (1 ft) away from the BCM.
Follow the existing IP wiring harness when routing the conduit.
Route the wires in the conduit (1) through the opening in the IP carrier and secure with a tie strap (2).
Route the conduit (1) down behind the case bracket while securing the conduit to the IP harness with two tie straps.
Route the conduit up above the engine cover along the right side of the air duct while attaching the conduit to the main IP harness with a tie strap (1).
Continue to route the conduit up behind the radio and secure with a tie strap (1) to the IP harness.
Route the conduit down toward the drivers floor following the accelerator harness.
Pull the drivers side of the front floor carpet or rubber mat back.
The conduit routing is critical and should be routed behind the shifter cable and properly secured to the shifter cable with tie straps (1).
Follow the front floor harness until you get to the left front main harness pass-thru grommet (1). The orange wire and yellow wire will be pushed through the grommet and installed in the UBEC later.
Remove the left hinge pillar trim. Refer to Body Hinge Pillar Trim Panel Replacement in SI. Remove the left front sill plate. Refer to Front Side Door Step Mat Replacement in SI.
Remove the left front seat assembly. Refer to Driver and Passenger Seat Replacement in SI.
Remove the fuse block cover on the fuse block body bus electrical center (BBEC).
Remove the BBEC. Refer to Body Wiring Harness Junction Block Replacement in SI.
Locate connector X1 (1) (black in color 62 cavities) at the BBEC.
Remove the bottom plastic protector cover (1) from the BBEC connector X1 (black in color 62 cavities) (1).
Remove the top terminal position assurance lock tab retainer (1) from the BBEC connector X1.
Add circuit 1624 (trailer backup lamp supply voltage) (light green wire) to the BBEC.
Obtain a light green 16 (1.0 m) gauge wire and cut the wire to 201 cm (6-1/2 ft) in length.
Add terminal 8100-4444 from the Sumitomo tray 22 to one end of the light green wire. Refer to Repairing Connector Terminals in SI.
Locate cavity 52 in the BBEC connector X1 (black in color 62 cavities) as shown in the graphic above.
Install the light green wire (circuit 1624) with terminal 810-4444 into cavity 52.
Add circuit 2109 (trailer park lamp supply voltage) (brown wire) to BBEC.
Obtain a brown 16 (1.0 m) gauge wire and cut the wire to 201 cm (6-1/2 ft) in length.
Add terminal 8100-4444 from the Sumitomo tray 22 to one end of the brown wire (circuit 2109). Refer to Repairing Connector Terminals in SI.
Locate cavity 7 in the BBEC connector X1 (black in color 62 cavities) as shown in the graphic above. Install the brown wire (circuit 2109) with terminal 8100-4444 in cavity 7.
Install the top terminal position assurance lock tab retainer to the BBEC connector X1.
Install the bottom plastic protector cover to the BBEC connector X1 (black in color 62 cavities).
Route the light green wire and brown wire inside the plastic floor harness retainer following the existing floor harness while securing with a tie strap (1).
Follow the floor harness until you get to the left front main harness pass-thru grommet. The light green wire and brown wire will be pushed through the grommet and installed into the UBEC later.
Add circuit 47 (trailer brake signal) (dark blue wire).
Obtain a 12 (3.0 m) gauge dark blue wire and cut the wire to 122 cm (4 ft) in length.
Leave 61 cm (2 ft) of the dark blue wire inside the vehicle this end will be used to make up the trailer brake control module harness.
The opposite end of the dark blue wire will be pushed through the grommet and installed into the UBEC later in Step 47. Add circuit 3940 (battery feed) (red/white wire).
Obtain a 12 (3.0 m) gauge red/white wire and cut the wire to 122 cm (4 ft) in length.
Leave 61 cm (2 ft) of the red/white wire inside the vehicle this end will be used to make up the trailer brake control module harness.
The opposite end of the red/white wire will be pushed through the grommet and installed into the UBEC later in Step 48. Add new circuit 6311 (CHMSL/stop lamp supply voltage signal) (light blue/white wire).
Obtain a 20 (0.5 m) gauge light blue/white wire and cut the wire to 152 cm (5 ft) in length.
Leave 61 cm (2 ft) of the light blue/white wire inside the vehicle this end will be used to make up the trailer brake control module harness.
The opposite end of the light blue/white wire will be pushed through the grommet and spliced into circuit 6311 later in Step 39.
Bundle one end of the seven wires together as shown.
Tape (1) the bundled wires around a screwdriver shaft leaving the tip showing.
Push the screwdriver (1) through the grommet out toward the engine compartment.
Remove the water deflector (1) from the left fender and the left brace (2).
Gasoline engine only: Remove the air cleaner assembly from the vehicle. Refer to Air Cleaner Assembly Replacement in SI.
It is not necessary to remove the air cleaner or any brake lines from the master cylinder if the vehicle is equipped with a diesel engine
* Diesel engine only: Remove the two master cylinder nuts and reposition the master cylinder assembly up away from the UBEC
Remove the under hood bus electrical center (UBEC). Refer to Accessory Wiring Junction Block Replacement in SI.
Remove the junction block cover by pressing the cover tabs inward while lifting up on the cover. Remove the battery cable nuts (1).
Remove the cables. Loosen the three junction block bolts (2).
Remove the UBEC.
Remove the UBEC holding tray.
Remove the horn. Refer to Horn Replacement in SI.
Locate connector X100 (black in color 40 cavities) (1) at the left front inner fender.
Disconnect connector X100 and locate the light blue/white wire in cavity 1 of the connector as shown in the graphic above.
Remove the tape and wires from the screwdriver and route the new light blue/white wire to connector X100.
The splice clip will need to be soldered with 60/40 core solder and be properly taped and sealed.
Splice in the new light blue/white wire to the light blue/white wire (circuit 6311) located in cavity 1 of the IP engine connector X100 connector using splice clip P/N 1839906 from Delphi tray 1. Refer to Splicing Copper Wire Using Splice Clips in SI.
Tape the new light blue/white wire to the existing harness.
Install the horn. Refer to Horn Replacement in SI.
Route the remaining six wires (1) that were previously pushed through the grommet along the side of the existing under hood harness to the UBEC connector X3.
Locate the UBEC connector X3 (1) (gray in color 62 cavities).
Remove the bottom plastic protector cover from connector X3 by releasing the four retaining tabs (1).
Remove the top terminal position assurance lock tab retainer (1) from connector X3.
Add terminal 8100-4443 from the Sumitomo tray 22 to the end of the orange wire (circuit 5186). Refer to Repairing Connector Terminals in SI.
Locate cavity 12 in the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the orange wire (circuit 5186) with terminal 8100-4443 into cavity 12.
Add terminal 8100-4443 from the Sumitomo tray 22 to the end of the yellow wire (circuit 5187). Refer to Repairing Connector Terminals in SI.
Locate cavity 46 in the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the yellow wire (circuit 5187) with terminal 8100-4443 into cavity 46.
Add terminal 8100-4445 from Sumitomo tray 22 to the end of the dark blue wire (circuit 47). Refer to Repairing Connector Terminals in SI.
Locate cavity 18 in the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the dark blue wire (circuit 47) with terminal 8100-4445 into cavity 18.
Add terminal 8100-4445 from Sumitomo tray 22 to the end of the red/white wire (circuit 3940). Refer to Repairing Connector Terminals in SI.
Locate cavity 6 in the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the red/white wire (circuit 3940) with terminal 8100-4445 into cavity 6.
Add terminal 8100-4444 from the Sumitomo tray 22 to the end of the light green wire (circuit 1624). Refer to Repairing Connector Terminals in SI.
Locate cavity 13 in the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the light green wire (circuit 1624) with terminal 8100-444 into cavity 13.
Add terminal 8100-4444 from the Sumitomo tray 22 to the end of the brown wire (circuit 2109). Refer to Repairing Connector Terminals in SI.
Locate cavity 24 of the UBEC connector X3 (gray in color 62 cavities) as shown in the graphic above. Install the brown wire (circuit 2109) with terminal 8100-4444 into cavity 24.
Install the top terminal assurance lock onto the UBEC connector X3.
Install the bottom plastic protector cover for the UBEC connector X3.
Tape the seven new wires to the existing wiring harness.
Seal and tape the new circuit wires at the grommet.
Install the UBEC. Refer to Accessory Wiring Junction Block Replacement in SI.
Install the UBEC junction block top cover.
Gasoline engine only: Install the air cleaner assembly. Refer to Air Cleaner Assembly in SI. Diesel engine only: Install the master cylinder and nuts.
Tighten
Tighten the brake master cylinder nuts to 36 N.m (27 lb ft).
Install the left fender to the radiator support brace and bolts.
Tighten
Tighten the support bolts to 25 N.m(1 a lb ft).
Install the water deflector.
Add the new ground circuit 350 (ground) (black wire) from inside the vehicle.
Obtain a 20 (0.5 m) gauge black wire and cut the wire to 91 cm (3 ft) in length.
Attach a ground ring terminal P/N 12089496 from Delphi tray 5 to one end of the black wire. Refer to Repairing Connector Terminals in SI.
Do not attach the new ground ring terminal to the SDM ground. Attach the new ground ring terminal (2) to the left A-Pillar ground containing circuits 350 and 351. The 350 circuit can be easily identified by the 20 (0.5 m) gauge wire size.
Remove the front ground bolt (1).
Install the ground ring terminal (2) to the existing ground terminals. Refer to Repairing Connector Terminals in SI.
Tighten the ground bolt.
Tighten
Tighten the ground bolt to 10 N.m (88 lb in).
The opposite end of the black wire (circuit 350) will remain inside the vehicle and be used to make up the trailer brake control module harness.
A description on the location of the trailer brake control module wires may be found in the owner's manual.
The four trailer brake control wires should all have blunt cuts on the end. Each wire should be taped individually and then taped together as a group.
One black wire (circuit 350) (1)
One light blue/white wire (circuit 6311) (2)
One dark blue wire (circuit 47) (3).
One red/white wire (circuit 3940) (4)
The chart listed below updates the information found on page 4-42 in the owners manual regarding the four-wire harness (without connector).
Wire Color: Black / Description: Ground / Circuit: 350
Wire Color: Light Blue/White / Description: CHMSL/Stop Lamp Supply Voltage / Circuit: 6311
Wire Color: Dark Blue / Trailer Feed Auxiliary Circuit / Circuit: 47
Wire Color: Red/White/Description: Battery Feed / Circuit: 3940
Bundle the four wires up together and secure with tape (1) to the left side of the main harness.
Reposition the left front floor carpet or rubber mat back down into position.
Install the radio. Refer to Radio Replacement in SI.
Install the IP cluster trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement in SI.
Install the left side knee bolster bracket. Refer to Driver Knee Bolster Bracket Replacement in SI.
Install the IP lower center extension panel and compartment door. Refer to Instrument Panel Lower Extension Replacement in SI.
Install the left side knee bolster panel. Refer to Driver Knee Bolster Replacement in SI.
Install the BCM to the bracket and IP carrier. Refer to Body Control Module Replacement in SI.
Install the right side knee bolster panel. Refer to Passenger Knee Bolster Replacement in SI.
Reposition the left front floor carpet back down into position.
Install the BBEC and top fuse block cover. Refer to Body Wiring Harness Junction Block Replacement in SI.
Install the left front seat assembly. Refer to Driver and Passenger Seat Replacement in SI.
Install the left front sill plate. Refer to Front Side Door Step Mat Replacement in SI.
Install the left front hinge panel. Refer to Body Hinge Pillar Trim Panel Replacement in SI.
Install the left front floor mat.
\Enable the SIR system. Refer to SIR Disabling and Enabling in SI.
Connect negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI. If the vehicle is equipped with the auxiliary battery reconnect the negative battery cable.
Close the hood.
Verify the proper operation of all trailer running lights turn signals and brake lights.
Reset the radio clock and radio stations.