Diagnostic Test

CHECK FOR A DTC C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE
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, record and erase DTCs.
3. Cycle the ignition switch from off to on.
4. Road test the vehicle over 40 km/h (25 mph).
  NOTE:
  Vehicle must be driven above 40 km/h (25 mph) for set conditions to be meet.
5. With the scan tool, read DTCs.
  Does the scan tool display: C2116-ABS PUMP MOTOR SUPPLY LOW VOLTAGE active?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS-INTERMITTENT CONDITION .
INSPECT RELATED WIRING HARNESS, TERMINALS, AND CONNECTORS
1. Turn the ignition off.
2. Visually inspect the Anti-Lock Brake Module harness connector and wiring harness for damage.
3. Check all related wiring for pinched, chafed, pierced, and partially broken wires.
4. Check all related connectors for broken, bent, pushed out, and corroded terminals.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 3
CHECK ABS PUMP MOTOR FUSE
1. Remove and visually inspect the ABS Pump Motor fuse.
  Is the fuse open?
  
  Yes
  - Go To 4
  No
  - Go To 5
CHECK (A921) FUSED B(+) CIRCUIT FOR A SHORT TO GROUND

Fig 1: Measuring Resistance Of Fused B (+) Circuit Between Ground & ABS Module Harness Connector
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Anti-Lock Brake Module harness connector.
2. Measure the resistance of the (A921) Fused B(+) circuit between ground and the Anti-Lock Brake Module harness connector.
  Is the resistance below 10k ohms?
  
  Yes
  - Repair the (A921) Fused B(+) circuit for a short to ground.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 5
CHECK (A921) FUSED B(+) CIRCUIT FOR AN OPEN OR HIGH RESISTANCE

Fig 2: Probing Fused B+ Circuit Using 12-Volt Test Light Connected To 12 Volts
Courtesy of CHRYSLER GROUP, LLC
1. Replace the ABS Pump Motor fuse.
2. Using a 12-volt test light connected to ground, probe the (A921) Fused B(+) circuit.
  NOTE:
  The test light should illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 6
  No
  - Repair the (A921) Fused B(+) circuit for an open or high resistance.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
CHECK (Z909) GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE

Fig 3: Probing Ground Circuits Using 12-Volt Test Light Connected To 12 Volts
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to 12 volts, probe the (Z909) Ground circuit.
  NOTE:
  The test light should illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly on both circuits?
  
  Yes
  - Go To 7
  No
  - Repair (Z909) circuit for an open or high resistance.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
REPLACE ANTI-LOCK BRAKES MODULE AND VERIFY IF DTC IS STILL ACTIVE
1. Replace the Anti-Lock Brake Module in accordance with the Service Information.
2. Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
3. Turn the ignition on.
4. With the scan tool, read ABS DTCs.
  Does this DTC reset?
  
  Yes
  - Replace the Hydraulic Control Unit in accordance with the Service Information.
  - Perform ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS-INTERMITTENT CONDITION .