Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
  NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, select ECU view.
  NOTE: A red "X" will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.
  
  Does the scan tool display a red "X" next to the module?
  
  Yes
  - Go to step 2
  No
  - The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
(A108) FUSED B(+) CIRCUIT OPEN OR SHORTED

Fig 1: Checking Fused B(+) Circuit For Open Or Short
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Steering Control Module C1 harness connector.
3. Using a 12-volt test light connected to ground, check the (A108) Fused B(+) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 3
  No
  - Repair the (A108) Fused B(+) circuit for an open or short.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
(Z907) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit For Open
Courtesy of CHRYSLER LLC
1. Using a 12-volt test light connected to 12-volts, check the (Z907) ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 4
  No
  - Repair the (Z907) ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
(D55) AND (D54) CAN B BUS CIRCUITS OPEN

Fig 3: Checking Can B Bus Circuits For Open
Courtesy of CHRYSLER LLC

NOTE: One open circuit will not cause this condition.
1. Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.
2. Measure the voltage between the (D55) CAN B Bus (+) circuit and ground.
  Is there any voltage present on either circuit?
  
  Yes
  - Replace the Steering Control Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure
  No
  - Repair the (D55) and (D54) CAN B Bus circuits for an open. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure