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.

VERIFY DTC B2336-HORN CONTROL CIRCUIT LOW IS ACTIVE
1. With the scan tool, erase TIPM DTCs.
2. Operate the Horn Switch several times.
3. With the scan tool, read TIPM DTCs.
  Does the scan tool display active DTC B2336-HORN CONTROL CIRCUIT LOW?
  
  Yes
  - Go to step 2
  No
  - Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, corroded, or contaminated terminals.
  - Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
HORN
NOTE: Disconnect each horn one at a time and perform the following steps in an attempt to isolate a potentially defective horn.
1. Operate the Horn Switch several times.
2. With the scan tool, read TIPM DTCs.
  Does the scan tool display active DTC B2336-HORN CONTROL CIRCUIT LOW for each disconnected horn?
  
  Yes
  - Go to step 3
  No
  - Replace the Horn(s) as necessary in accordance with the Service Information.
  - Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
(X2) HORN CONTROL OUTPUT CIRCUIT SHORTED TO GROUND

Fig 1: Checking Horn Control Output Circuit For Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the horn connectors.
3. Disconnect the C1 TIPM harness connector.
4. Measure the resistance between ground and the Horn Control Output circuit at the TIPM connector.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the (X2) Horn Control Output circuit for a short to ground.
  - Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 4
TOTALLY INTEGRATED POWER MODULE
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module in accordance with the Service Information.
  - Perform BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .