Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Possible Causes
(F943) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(Z911) GROUND CIRCUIT OPEN
(D51) CAN C BUS (-) CIRCUIT OPEN
(D52) CAN C BUS (+) CIRCUIT OPEN
CLOCKSPRING/STEERING ANGLE SENSOR

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) 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. With the scan tool, read the module status.
  NOTE:
  Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is 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.
  No
  - Go To 2.
(F943) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED

Fig 1: Check Fused Ignition Run/Start Control Output Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Clockspring C3 harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F943) Fused Ignition Run/Start Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3.
  No
  - Repair the open or short in the (F943) Fused Ignition Run/Start Control Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Z911) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit For Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4.
  No
  - Repair the open in the (Z911) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(D52) CAN C BUS (+) CIRCUIT OPEN

Fig 3: Measuring Resistance Of CAN C Bus (+) Circuit Between The TIPM Harness Connector And Clockspring Connector
Courtesy 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 Clockspring C3 connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the open in the (D52) CAN C Bus (+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(D51) CAN C BUS (-) CIRCUIT OPEN

Fig 4: Measuring Resistance Of CAN C Bus (-) Circuit Between TIPM Harness Connector And Clockspring C3 Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Clockspring C3 connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Replace the Clockspring/Steering Angle Sensor in accordance with the Service Information. Refer to CLOCKSPRING , Removal .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the open in the (D51) CAN C Bus (-) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .