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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Antilock Brake System (Abs) - Electrical Diagnostics) >> DTC Troubleshooting >> C0020-35-Abs Pump Motor Control - Signal High Time > Maximum >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. VERIFY THE DTC IS ACTIVE 
    NOTE:

    This DTC must be active for the results of this test to be valid.

    1. Turn the ignition on.
    2. With the scan tool, read and record the DTCs.
    3. With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
    4. With the scan tool, erase the DTCs.
      CAUTION:

      Make sure brake capability is available before road testing.

    5. Road test the vehicle above 16 km/h (10 mph).
    6. With the scan tool, read and record the DTCs.

      Is the DTC active at this time?

      Yes 

      • Go To  2

      No 

  2. (A901) FUSED B+ CIRCUIT OPEN OR HIGH RESISTANCE 
    Fig 1: Checking Fused B+ Circuit For Open Or High Resistance
    GC0150840Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the ABS Module harness connector.
    3. Using a 12-volt test light connected to ground, check the (A901) Fused B+ circuit.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright?

      Yes 

      • Go To  3

      No 

      • Repair the (A901) Fused B+ circuit for an open circuit or high resistance.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. (Z924) GROUND CIRCUITS OPEN OR HIGH RESISTANCE 
    Fig 2: Checking Ground Circuits For Open Or High Resistance
    GC0150834Courtesy of CHRYSLER GROUP, LLC
    1. Using a 12-volt test light connected to 12-volts, check the (Z924) Ground circuits.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright?

      Yes 

      • Go To  4

      No 

      • Repair the (Z924) Ground circuit(s) for an open circuit or high resistance.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE 
    1. Turn the ignition off to the lock position.
    2. Inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

      NOTE:

      For this DTC it is necessary to replace both the ABS Module and the HCU as a complete unit.