Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR AN 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, 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 appropriate wiring diagram 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.
(F985) FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT OPEN OR SHORT

Fig 1: Checking Fused Ignition Switch Output (RUN-ACC) Circuit Using 12-Volt Test Light Connected To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the EBG harness connector.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F985) Fused Ignition Switch Output (RUN-ACC) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to Step 3.
  No
  - Repair the open or short in the (F985) Fused Ignition Switch Output (RUN-ACC) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(Z936) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit Using 12-Volt Test Light Connected To 12-Volts
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to 12-volts, check the (Z936) Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go to Step 4.
  No
  - Repair the open in the (Z936) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(D55) AND (D54) CAN B BUS CIRCUITS OPEN

Fig 3: Measuring Voltage Between CAN B Bus (-) Circuit & Ground And Between CAN B Bus (+) Circuit & Ground
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 EBG in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the open in the (D55) and (D54) CAN B Bus circuits. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .