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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (Communication - Non-DTC Based Diagnostics - 3500 Cab & Chassis, 4500 & 5500) >> Diagnosis and Testing >> No Response From Orc (Occupant Restraint Controller) >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(Z913) GROUND CIRCUIT OPEN
(F100) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(D51) CAN C BUS(+) CIRCUIT OPEN
(D52) CAN C BUS(-) CIRCUIT OPEN
OCCUPANT RESTRAINT CONTROLLER (ORC)


  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    Check for any Technical Service Bulletins (TSBs) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

    1. Turn the ignition on.
      NOTE:

      Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

    2. Using 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.
  2. (Z913) GROUND CIRCUIT OPEN 
    Fig 1: Measuring Resistance Between Ground And Ground Circuit
    GC0091332Courtesy of CHRYSLER LLC
    WARNING:

    To avoid possible serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

    1. Disconnect the Occupant Restraint Controller Module harness connectors.
    2. Connect the appropriate Load Tool ACM Adaptor to the ORC connectors.
    3. Measure the resistance between ground and the (Z913) ground circuit.

      Is the resistance below 10k Ohms?

      Yes 

      • Go To  3.

      No 

      • Repair the (Z913) ground circuit for an open.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
  3. (F100) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN OR SHORTED 
    Fig 2: Using 12-volt Test Light Connected To Ground To Check Fused Ignition Run/Start Control Output Circuit
    GC0091333Courtesy of CHRYSLER LLC
    NOTE:

    Check the TIPM for any ignition related DTCs before proceeding. If set. Refer to DIAGNOSIS AND TESTING .

    WARNING:

    Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Using a 12-volt test light connected to ground, check the (F100) Fused Ignition Run/Start Control Output circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  4.

      No 

      • Repair the (F100) Fused Ignition Run/Start Control Output circuit t for an open or short.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
  4. (F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED 
    Fig 3: Using 12-volt Test Light Connected To Ground To Check Fused Ignition Run/Start Control Output Circuit
    GC0091334Courtesy of CHRYSLER LLC
    1. Using a 12-volt test light connected to ground, check the (F201) Fused Ignition Run/Start Control Output circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5.

      No 

      • Repair the (F201) Fused Ignition Run/Start Control Output circuit for an open or short.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
  5. (D52) CAN C BUS (+) CIRCUIT OPEN 
    Fig 4: Measuring Resistance Of (D52) CAN C Bus (+) Circuit Between TIPM Harness Connector And Occupant Restraint Controller Connector
    GC0091335Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the TIPM C7 harness connector.
    3. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C2-A connector.

      Is resistance below 5.0 Ohms?

      Yes 

      • Go To  6.

      No 

      • Repair the (D52) CAN C Bus (+) circuit for an open.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
  6. (D51) CAN C BUS (-) CIRCUIT OPEN 
    Fig 5: Measuring Resistance Of CAN C Bus (-) Circuit Between TIPM Harness Connector And Occupant Restraint Controller Connector
    GC0091336Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C2-A connector.

      Is resistance below 5.0 Ohms?

      Yes 

      • Replace the Occupant Restraint Controller in accordance with the Service Information.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .

      No 

      • Repair the (D51) CAN C Bus (-) circuit for an open.
      • Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
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