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 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.
(A116) FUSED B(+) (I.O.D.) CIRCUIT OPEN OR SHORTED

Fig 1: Checking Fused B(+) (I.O.D.) Circuit For Open Or A Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Radio Amplifier C1 harness connector.
3. Using a 12-volt test light connected to ground, check the (A116) Fused B(+) (I.O.D.) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3
  No
  - Repair the (A116) Fused B(+) (I.O.D.) circuit for an open or short.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(Z910) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit 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, check the (Z910) ground circuit.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 4
  No
  - Repair the (Z910) ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(D265) OR (D264) CAN C INTERIOR BUS (125K) CIRCUIT OPEN

Fig 3: Measuring Resistance Of CAN C Interior Bus (-/+) (125K) Circuits
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (D264) CAN C Interior Bus (-) (125K) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector.
2. Measure the resistance of the (D265) CAN C Interior Bus (+) (125K) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector.
  Is resistance below 5.0 ohms on both circuits?
  
  Yes
  - Replace the Radio Amplifier in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (D265) or (D264) CAN C Interior Bus (125K) circuit for an open. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .