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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 184 (Anti-Lock Brake System (Abs) - Electrical Diagnostics - 3500 Cab & Chassis, 4500 & 5500) >> Diagnosis And Testing >> C1008-Brake Fluid Level Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC) 
    1. Turn the ignition on.
    2. With the scan tool, read the TIPM DTC's.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2.

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE (B20) BRAKE FLUID LEVEL SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 1: Checking Brake Fluid Level Signal Circuit For A Short To Voltage
    GC0089949Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Brake Fluid Level Sensor harness connector.
    3. Disconnect the TIPM C1 harness connector.
    4. Turn the ignition on.
    5. Measure the voltage between ground and the (B20) Brake Fluid Level Signal circuit.

      Is there any voltage present?

      Yes 

      • Repair the short to voltage in the (B20) Brake Fluid Level Signal circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3.
  3. CHECK THE (B20) BRAKE FLUID LEVEL SIGNAL CIRCUIT FOR AN OPEN 
    Fig 2: Checking Brake Fluid Level Signal Circuit For An Open
    GC0089950Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance of the (B20) Brake Fluid Level Signal circuit between the Brake Fluid Level Sensor harness connector and the TIPM C1 harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4.

      No 

      • Repair the open in the (B20) Brake Fluid Level Signal circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (Z907) GROUND CIRCUIT FOR AN OPEN 
    Fig 3: Checking Brake Fluid Level Sensor For An Open
    GC0089951Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between ground and the (Z907) Ground circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  5.

      No 

      • Repair the open in the (Z907) Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  5. BRAKE FLUID LEVEL SWITCH INTERNAL FAILURE 
    Fig 4: Checking Brake Fluid Level Sensor For Internal Failure
    GC0089952Courtesy of CHRYSLER GROUP, LLC
    1. Reconnect the TIPM C1 harness connector.
    2. Connect a jumper wire between the (B20) Brake Fluid Level Signal circuit and the (Z907) Ground circuit in the Brake Fluid Level Sensor harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read the Brake Fluid Level.

      Does the scan tool display Low?

      Yes 

      • Replace the Brake Fluid Level Sensor in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Replace the TIPM in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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