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
(F930) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(Z909) GROUND CIRCUIT OPEN
(D264) AND (D265) CAN INTERIOR BUS (125K) CIRCUITS OPEN
HEATED SEAT MODULE

TEST FOR INTERMITTENT CONDITION
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.
(F930) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT OPEN OR SHORTED

Fig 1: Using 12-volt Test Light Connected To Ground To Check Fused Ignition Run Control Output Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Heated Seat Module C1 harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F930) Fused Ignition Run Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3.
  No
  - Repair the (F930) Fused Ignition Run Control Output circuit for an open or short.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Z909) GROUND CIRCUIT OPEN

Fig 2: Using 12-volt Test Light Connected To 12-volts To Check Ground Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to 12-volts, check the (Z909) ground circuit.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 4.
  No
  - Repair the (Z909) ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(D265) OR (D264) CAN INTERIOR BUS (125K) CIRCUIT OPEN

Fig 3: Measuring Resistance Of CAN Interior Bus (-)/(+) Circuit Between TIPM Harness Connector And Heated Seat Module C1 Harness Connector
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (D264) CAN Interior Bus (-) (125K) circuit between the TIPM C7 harness connector and the Heated Seat Module C1 harness connector.
2. Measure the resistance of the (D265) CAN Interior Bus (+) (125K) circuit between the TIPM C7 harness connector and the Heated Seat Module C1 harness connector.
  Is resistance below 5.0 Ohms on both circuits?
  
  Yes
  - Replace the Heated Seat Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (D265) or (D264) CAN Interior Bus (125K) circuit for an open. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .