Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

RADIATOR FAN HIGH RELAY OPERATION
1. Turn the ignition on.
2. Using a scan tool, actuate the Radiator Cooling Fan Relay #2 Control State.
  Is the Radiator Cooling Fan Relay operating?
  
  Yes
  - Perform the CHECKING FOR AN INTERMITTENT DTC diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 2
FUSED B+ CIRCUITS

Fig 1: Checking Fused B+ Circuits
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Remove the Radiator High Fan Relay.
3. Using a 12-volt test light connected to ground, probe the Fused B+ circuits in the relay connection.
  Is the test light illuminated and bright?
  
  Yes
  - Go to step 4
  No
  - Go to step 3
RADIATOR FAN HIGH/LOW CONTROL RELAY SHORTED INTERNALLY
1. With the test light still at the Fused B+ circuit (Radiator High Fan Relay), remove the Radiator Fan High/Low Control Relay.
  With the relay removed, is the test light illuminated and bright?
  
  Yes
  - Replace the Radiator Fan High/Low Control Relay.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Repair the open circuit or short to ground in the Fused B+ circuits. Inspect the related fuse and repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
RADIATOR FAN HIGH RELAY CONTROL CIRCUIT

Fig 2: Checking Radiator Fan High Relay Control Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition on.
2. Using a scan tool, actuate the Radiator Cooling Fan Relay #2 Control State to toggle.
3. Using a 12-volt test light connected to 12 volts, check the Radiator Fan High Relay Control circuit in the TIPM.
  Does the test light toggle appropriately during the actuation?
  
  Yes
  - Replace the Radiator Fan High Relay.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 5
RADIATOR FAN HIGH/LOW CONTROL RELAY

Fig 3: Checking Radiator Fan High Relay Control Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the Radiator Fan High Control circuit at the relay connection.
2. With the probe still at the Radiator Fan High Control circuit, remove the Radiator Fan High/Low Control Relay.
  Is the resistance below 100 Ohms?
  
  Yes
  - Replace the TIPM in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Radiator Fan High/Low Control Relay.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .