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Home >> Jeep >> 2008 >> Commander Base, 4.7 N, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System - Electrical Diagnostics >> Power Windows - Electrical Diagnostics >> DTC Troubleshooting >> B1912-Passenger Window Switch Circuit High >> Diagnostic Test

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 

    With the scan tool, record and erase DTC's

    Operate the Passenger Window Switch in both positions several times.

    Cycle the ignition from on to off.

    Turn the ignition on.

    With the scan tool, read DTC's.

    Does the scan tool display B1912-PASSENGER WINDOW SWITCH CIRCUIT HIGH? 

    Yes 

    1. Go To  2.

    No 

    1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. Perform BODY VERIFICATION TEST .
  2. PASSENGER WINDOW/DOOR LOCK SWITCH SHORTED 
    Fig 1: Passenger Window/Door Lock Switch connector
    GC0045654Courtesy of CHRYSLER LLC

    With the scan tool, erase DTC's.

    Disconnect the Passenger Window/Door Lock Switch C2 connector.

    Turn the ignition on.

    With the scan tool, read DTC's.

    Does the scan tool display B1912-PASSENGER WINDOW SWITCH CIRCUIT HIGH? 

    No 

    1. Replace the Passenger Window/Door Lock Switch.
    2. Perform BODY VERIFICATION TEST .

    Yes 

    1. Go to  3.
  3. (Q336) PASSENGER WINDOW EXPRESS SWITCH MUX WIRE SHORT TO VOLTAGE 
    Fig 2: Measuring Voltage Between Ground And Passenger Window Express Switch MUX Circuit
    GC0045685Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Passenger Door Module C2 connector.

    Turn the ignition on.

    Measure the voltage between ground and the (Q336) Passenger Window Express Switch MUX circuit in the Passenger Door Module C2 connector.

    Is there any voltage present? 

    Yes 

    1. Repair the (Q336) Passenger Window Express Switch MUX circuit for a short to voltage.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Replace the Passenger Door Module in accordance with service information.
    2. Perform BODY VERIFICATION TEST .