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HOMESERVICE MANUALSJEEP2008LIBERTY SPORT, RWD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM - ELECTRICAL DIAGNOSTICSABS - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGC1232-DRIVE TEST: PRESSURE SENSORDIAGNOSTIC TEST
2008 Jeep Liberty Sport, RWD, Automatic

Diagnostic Test

2008 Jeep Liberty Sport, RWD, AutomaticSECTION Diagnostic Test
  1. CHECK FOR A DTC C1232-DRIVE TEST: PRESSURE SENSOR 
    NOTE: If present, diagnose and repair all other DTCs before diagnosing this DTC. This DTC must be active for the results of this test to be valid.

    Turn the ignition on.

    With the scan tool, read and record DTCs.

    With the scan tool, read and record Freeze Frame information.

    Perform ECU initialization with drive test. Perform ABS VERIFICATION TEST .

    Start the engine.

    With the scan tool, read and record DTCs.

    Does the scan tool display: C1232-DRIVE TEST: PRESSURE SENSOR? 

    Yes 

    1. Go To  2.

    No 

    1. Refer to the INTERMITTENT CONDITION diagnostic procedure.
    2. Refer to the ABS INTERMITTENT CONDITION .
  2. CHECK HYDRAULIC SYSTEM & BRAKE SYSTEM COMPONENT INSTALLATION & FUNCTION 

    Verify that the Anti-Lock Brakes Module and Hydraulic Control Unit are properly installed.

    Verify that the hydraulic system is properly filled and bled.

    Verify that the brake system components are installed and functioning properly.

    Were any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform ABS VERIFICATION TEST .

    No 

    1. Clean contacts in HCU first if problem reoccurs replace the Integrated Control Unit in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST .
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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.