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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Anti-Lock Brake System & Adjustable Pedals - Electrical Diagnostics) >> Electrical Diagnostics >> Adjustable Pedals >> DTC Troubleshooting >> B1D56-Adjustable Pedal Sensor Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW 
    NOTE: This DTC must be active for the results of this test to be valid.

    Turn the ignition on.

    With the scan tool, record and erase DTC's.

    Cycle the ignition switch from off to on.

    Cycle the Adjustable Pedals Switch forward and rearward.

    With the scan tool, read DTC's.

    Does the scan tool display: B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW? 

    Yes 

    1. Go To  2.

    No 

    1. Refer to the APS-INTERMITTENT CONDITION .
  2. CHECK CONNECTOR/TERMINAL FOR DAMAGE 
    NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals.

    Turn the ignition off.

    Inspect the Seat Memory Module harness connector, Adjustable Pedals Sensor, and Adjustable Pedals Sensor harness connector.

    Is the Adjustable Pedals Sensor or any of the connectors/terminals damaged? 

    Yes 

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

    No 

    1. Go To  3.
  3. (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT VOLTAGE 
    Fig 1: Probing Adjustable Pedals Sensor Supply Circuit
    GC0039442Courtesy of CHRYSLER LLC

    Disconnect the Seat Memory Module harness connector.

    Disconnect the Adjustable Pedals Sensor harness connector.

    Using a 12-volt test light connected to 12-volts, probe the (G13) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Repair the (G13) Adjustable Pedals Sensor Supply circuit for a short to ground.
    2. Perform APS VERIFICATION TEST .

    No 

    1. Go To  4.
  4. (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT SHORT TO GROUND 
    Fig 2: Probing Adjustable Pedals Sensor Supply Circuit
    GC0039442Courtesy of CHRYSLER LLC

    Connect a jumper wire between the (G13) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector.

    Using a 12-volt test light connected to 12-volts, probe the (G13) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector.

    Does the test light illuminate brightly 

    Yes 

    1. Go To  5.

    No 

    1. Repair the (G13) Adjustable Pedals Sensor Supply circuit for an open.
    2. Perform APS VERIFICATION TEST .
  5. (G14) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT OPEN 
    Fig 3: Probing Adjustable Pedals Sensor Signal Circuit
    GC0039444Courtesy of CHRYSLER LLC

    Using a 12-volt test light connected to 12-volts, probe the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Repair the (G14) Adjustable Pedals Sensor Signal circuit for a short to ground.
    2. Perform APS VERIFICATION TEST .

    No 

    1. Go To  6.
  6. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORT TO GROUND 
    Fig 4: Probing Adjustable Pedals Sensor Signal Circuit
    GC0039445Courtesy of CHRYSLER LLC

    Connect a jumper wire between the (G14) Adjustable Pedals Sensor Signal circuit and ground at the Adjustable Pedal Sensor harness connector.

    Using a 12-volt test light connected to 12-volts, probe the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Go To  7.

    No 

    1. Repair the (G14) Adjustable Pedals Sensor Signal circuit for an open.
    2. Perform APS VERIFICATION TEST .
  7. (G13) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT FOR AN OPEN 
    Fig 5: Measuring Voltage Between Adjustable Pedals Sensor Supply Circuit And Ground
    GC0039446Courtesy of CHRYSLER LLC

    Measure the voltage between the (G13) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector.

    Is the voltage between 4.0 and 5.0 volts? 

    Yes 

    1. Go To  8.

    No 

    1. Replace and reprogram the Seat Memory Module in accordance with the Service Information.
    2. Perform APS VERIFICATION TEST .
  8. (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT VOLTAGE 
    Fig 6: Measuring Voltage Of Adjustable Pedals Sensor Signal Circuit
    GC0039447Courtesy of CHRYSLER LLC

    Reconnect Adjustable Pedal Sensor harness connector.

    Turn ignition on.

    Measure the voltage of the (G14) Adjustable Pedals Sensor Signal circuit in the Seat Memory Module C1 harness connector.

    Is the voltage above 0.5 volts? 

    Yes 

    1. Replace the Seat Memory Module in accordance with the Service Information.
    2. Perform APS VERIFICATION TEST .

    No 

    1. Replace the Adjustable Pedals Sensor in accordance with the Service Information.
    2. Perform APS VERIFICATION TEST .
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