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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> (Cabin Compartment Node (CCN) - Electrical Diagnostics) >> DTC Troubleshooting >> B160A-Panel Dimmer Input Circuit Low >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, record and erase DTCs.
    3. Activate the Panel Dimmer Switch.
    4. Wait 30 seconds.
    5. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Go to step  2

      No 

      • The condition that caused this code to set is not present at this time. 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, pushed out, spread, corroded, or contaminated terminals.
      • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  2. CHECK OPERATION OF HEADLAMP SWITCH 
    Fig 1: Identififying Headlamp Switch Harness Connector
    GC0098023Courtesy of CHRYSLER LLC
    1. Disconnect the Headlamp Switch harness connector.
    2. With the scan tool, read Cluster DTCs.

      Does the scan tool display-B160B-PANEL DIMMER INPUT CIRCUIT HIGH?

      Yes 

      No 

      • Go to step  3
  3. CHECK THE (E2) PANEL LAMPS DIMMER SIGNAL CIRCUIT FOR A SHORT TO GROUND 
    Fig 2: Checking Panel Lamps Dimmer Signal Circuit For Short To Ground
    GC0098024Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Cluster C1 harness connector.
    3. Measure the resistance between ground and the (E2) Panel Lamps Dimmer Signal Circuit.

      Is the resistance below 10K ohms?

      Yes 

      No