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 MANUALSJEEP2009LIBERTY LIMITED, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICES(TOTALLY INTEGRATED POWER MODULE (TIPM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGB1937-FLIPPER GLASS RELEASE SWITCH CIRCUIT LOWDIAGNOSTIC TEST

2009 Jeep Liberty Limited, 4WD, Automatic

Diagnostic Test

2009 Jeep Liberty Limited, 4WD, AutomaticSECTION Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase DTCs
2. Operate the Flip-Up Glass Switch several times.
3. Cycle the ignition from on to off.
4. Turn the ignition on.
5. With the scan tool, read DTCs.
  Does the scan tool display B1937-FLIPPER GLASS RELEASE SWITCH CIRCUIT LOW?
  
  Yes
  - Go to step 2
  No
  - The conditions that caused this code to set are not present at this time. Check for a possible switch sticking at times and replace if found defective. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
FLIP-UP GLASS SWITCH

Fig 1: CHECKING FLIP-UP GLASS SWITCH
Courtesy of CHRYSLER LLC
1. With the scan tool, erase DTCs.
2. Disconnect the License Lamp (Flip-Up Glass Switch) connector.
3. With the scan tool, read DTCs.
  Does the scan tool display B1937-FLIPPER GLASS RELEASE SWITCH CIRCUIT LOW?
  
  Yes
  - Replace the License Lamp (Flip-Up Glass Switch).
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 3
(Q80) FLIP-UP GLASS SWITCH SENSE CIRCUIT SHORT TO GROUND

Fig 2: CHECKING FLIP-UP GLASS SWITCH SENSE CIRCUIT FOR SHORT TO GROUND
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C7 connector.
3. Measure the resistance between ground and the (Q80) Flip-Up Glass Switch Sense circuit in the License Lamp connector.
  Is the resistance below 10,000 ohms?
  
  Yes
  - Repair the (Q80) Flip-Up Glass Switch Sense circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

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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.