Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSJEEP2009COMPASS SPORT, 2.4 B, ED3, AWD, AUTOMATIC CVTREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESDTCS B106B TO B1638 (TIPM)B106B-REAR DEFROST CONTROL CIRCUIT LOWDIAGNOSTIC TEST

2009 Jeep Compass Sport, 2.4 B, ED3, AWD, Automatic CVT

Diagnostic Test

2009 Jeep Compass Sport, 2.4 B, ED3, AWD, Automatic CVTSECTION Diagnostic Test

VERIFY DTC B106B-REAR DEFROST CONTROL CIRCUIT LOW IS ACTIVE
1. Make sure the rear defogger switch is off.
2. With the scan tool, erase the TIPM DTCs.
3. Operate the rear defogger switch several times.
4. With the scan tool, read the TIPM DTCs.
  Does the scan tool display active DTC: B106B-REAR DEFROST CONTROL CIRCUIT LOW?
  
  Yes
  - Go to step 2
  No
  - Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched and partially broken wires. Also, inspect the related connectors for broken, bent, corroded or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
INSPECT (C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT AT REAR WINDOW GRID
1. Inspect the (C515) Rear Window Defogger Control Output wiring at the rear window grid. If necessary remove the trim around the rear window.
2. Check for a chafed, pierced or pinched wire. Also look for a metal object that may cause a short to ground condition at the grid.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 3
VEHICLE EQUIPPED WITH HEATED MIRRORS
Is this vehicle equipped with heated mirrors?

Yes
- Go to step 4
No
- Go to step 6
DISCONNECT MIRROR AND RECHECK DTC
NOTE: For this step, disconnect each outside rearview mirror one at a time and then recheck for DTCs.
1. With the scan tool, erase the TIPM DTCs.
2. Operate the rear defogger switch several times.
3. With the scan tool, read the TIPM DTCs.
  Does the scan tool display active DTC: B106B-REAR DEFROST CONTROL CIRCUIT LOW?
  
  Yes
  - Go to step 5
  No
  - Inspect the mirror pigtail wiring. If the wiring is OK, replace the outside rearview mirror in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(C16) FUSED REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND

Fig 1: Checking Fused Rear Window Defogger Control Output Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect both outside review mirrors.
3. Disconnect the TIPM C8 harness connector.
4. Measure the resistance between ground and the (C16) Fused Rear Window Defogger Control Output circuit at the TIPM C8 harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short to ground in the (C16) Fused Rear Window Defogger Control Output circuit.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 6
(C515) REAR WINDOW DEFOGGER CONTROL OUTPUT CIRCUIT SHORTED TO GROUND

Fig 2: Checking Rear Window Defogger Control Output Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Disconnect the electric heated backlite (power) 1-way connector.
2. Measure the resistance between ground and the (C515) Rear Window Defogger Control Output circuit at the TIPM C8 harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short to ground in the (C515) Rear Window Defogger Control Output circuit.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 7
TOTALLY INTEGRATED POWER MODULE (TIPM)
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.