Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSJEEP2009LIBERTY LIMITED, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESCABIN COMPARTMENT NODE (CCN) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGU1109-LOST COMMUNICATION WITH LIN STEERING WHEEL CONTROLSDIAGNOSTIC TEST

2009 Jeep Liberty Limited, RWD

Diagnostic Test

2009 Jeep Liberty Limited, RWDSECTION Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go to step 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.
CHECK THE VOLTAGE OF (D506) LIN BUS CIRCUIT AT THE RIGHT STEERING WHEEL SWITCH

Fig 1: CHECKING VOLTAGE OF LIN BUS CIRCUIT
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Right Steering Wheel Switch harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (D506) LIN Bus circuit at the Right Steering Wheel Switch harness connector.
  Is the voltage above 5.0 volts?
  
  Yes
  - Go to step 5
  No
  - Go to step 3
(D506) LIN BUS CIRCUIT OPEN BETWEEN THE RIGHT STEERING WHEEL SWITCH AND CLOCKSPRING

Fig 2: CHECKING LIN BUS CIRCUIT FOR OPEN
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Clockspring C8 harness connector.
3. Measure the resistance of the (D506) LIN Bus circuit between the Right Steering Wheel Switch and Clockspring C8 harness connectors.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the open in the (D506) LIN Bus circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE VOLTAGE OF (D506) LIN BUS CIRCUIT AT THE CLOCKSPRING

Fig 3: CHECKING VOLTAGE OF LIN BUS CIRCUIT AT CLOCKSPRING
Courtesy of CHRYSLER LLC
1. Disconnect the Clockspring C2 harness connector.
2. Turn the ignition on.
3. Measure the voltage of the (D506) LIN Bus circuit at the Clockspring C2 harness connector.
  Is the voltage above 5.0 volts?
  
  Yes
  - Replace the Clockspring in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the open in the (D506) LIN Bus circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE VOLTAGE OF (A909) FUSED B(+) CIRCUIT AT THE RIGHT STEERING WHEEL SWITCH

Fig 4: CHECKING VOLTAGE OF FUSED B(+) CIRCUIT
Courtesy of CHRYSLER LLC
1. Measure the voltage of the (A909) Fused B(+) circuit at the Right Steering Wheel Switch harness connector.
  Is the voltage above 10.0 volts?
  
  Yes
  - Go to step 8
  No
  - Go to step 6
(A909) FUSED B(+) CIRCUIT OPEN BETWEEN THE RIGHT STEERING WHEEL SWITCH AND CLOCKSPRING

Fig 5: CHECKING FUSED B(+) CIRCUIT FOR OPEN
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Clockspring C8 harness connector.
3. Measure the resistance of the (A909) Fused B(+) circuit between the Right Steering Wheel Switch and Clockspring C8 harness connectors.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 7
  No
  - Repair the open in the (A909) Fused B(+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(A909) FUSED B(+) CIRCUIT OPEN BETWEEN THE CLOCKSPRING AND TOTALLY INTEGRATED POWER MODULE

Fig 6: CHECKING FUSED B(+) CIRCUIT FOR OPEN
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Clockspring C2 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (A909) Fused B(+) circuit at the Clockspring C2 harness connectors.
  Is the voltage above 10.0 volts?
  
  Yes
  - Replace the Clockspring in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the open in the (A909) Fused B(+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK THE (Z910) GROUND CIRCUIT AT THE RIGHT STEERING WHEEL SWITCH

Fig 7: CHECKING GROUND CIRCUIT
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (Z910) Ground circuit at the Right Steering Wheel Switch harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Right Steering Wheel Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 9
(Z910) GROUND CIRCUIT OPEN BETWEEN THE RIGHT STEERING WHEEL SWITCH AND CLOCKSPRING

Fig 8: CHECKING GROUND CIRCUIT FOR OPEN
Courtesy of CHRYSLER LLC
1. Disconnect the Clockspring C8 harness connector.
2. Measure the resistance of the (Z910) Ground circuit between the Right Steering Wheel Switch and Clockspring C8 harness connectors.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 10
  No
  - Repair the open in the (Z910) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(Z910) GROUND CIRCUIT OPEN BETWEEN THE CLOCKSPRING AND GROUND

Fig 9: CHECK GROUND CIRCUIT FOR OPEN
Courtesy of CHRYSLER LLC
1. Disconnect the Clockspring C2 harness connector.
2. Measure the resistance between ground and the (Z910) Ground circuit at the Clockspring C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Clockspring in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the open in the (Z910) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .