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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> DTCS B165C To B2304 (TIPM) >> B2123-Ignition Run Control Circuit High >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR ACTIVE DTC 
    1. With the scan tool, read the active DTC's.
    2. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.
    3. With the scan tool, read the active DTC's.

      Does the scan tool display this DTC as active?

      Yes 

      • Go to Step  2.

      No 

      • If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
  2. RUN RELAY 
    1. Turn the ignition off.
    2. Install a substitute Run Relay in place of the original Run Relay.
    3. Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 30 seconds.
    4. With the scan tool, read DTC's.

      Does the scan tool display this DTC as active?

      Yes 

      • Go to Step  3.

      No 

  3. (F923) RUN RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE 
    Fig 1: Measuring Voltage Of Run Relay Control Circuit At TIPM C1 Harness Connector
    GC0097840Courtesy of CHRYSLER LLC
    1. Remove the Run Relay.
    2. Measure the voltage of the (F923) Run Relay Control circuit at the TIPM C1 harness connector.

      Is the voltage above 10.0 volts?

      Yes 

      No