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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 ((Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE)) >> DTC Troubleshooting >> P0890-Switched Battery >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK TO SEE IF DTC P0890 IS PRESENT 
    1. With the scan tool, view DTCs.

      Is the status Active for this DTC or is the STARTS SINCE SET counter set at 0?

      Yes 

      • Go to step  2

      No 

      • Go to step  5
  2. (T9) OD PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE 
    Fig 1: Checking (T9) OD Pressure Switch Sensor Circuit Short To Voltage
    GC0090537Courtesy of CHRYSLER LLC
    1. Turn the ignition off to the lock position.
    2. Disconnect the PCM C4 harness connector.
    3. Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector.
    4. Ignition on, engine not running.
    5. With the scan tool under TIPM, actuate the Transmission.
      CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis.
    6. Measure the voltage of the (T9) OD Pressure Switch Sensor circuit.

      Is the voltage above 0.5 volt?

      Yes 

      No 

      • Go to step  3
  3. (T47) 2/4 PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE 
    Fig 2: Checking (T47) 2/4 Pressure Switch Sensor Circuit Short To Voltage
    GC0090527Courtesy of CHRYSLER LLC
    1. With the scan tool under TIPM, actuate the Transmission.
    2. Measure the voltage of the (T47) 2/4 Pressure Switch Sensor circuit.

      Is the voltage above 0.5 volt?

      Yes 

      No 

      • Go to step  4
  4. (T50) L/R PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE 
    Fig 3: Measuring Voltage Of (T50) L/R Pressure Switch Sensor Circuit
    GC0090524Courtesy of CHRYSLER LLC
    1. With the scan tool under TIPM, actuate the Transmission.
    2. Measure the voltage of the (T50) L/R Pressure Switch Sensor circuit.

      Is the voltage above 0.5 volts?

      Yes 

      No 

      • Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN
      • Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure 
  5. INTERMITTENT WIRING AND CONNECTORS 
    1. The conditions necessary to set the DTC are not present at this time.
    2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
    3. Wiggle the wiring and connectors while checking for shorted and open circuits.
    4. With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.

      Were there any problems found?

      Yes 

      No 

      • Test Complete.