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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (42RLE Automatic Transmission - Electrical Diagnostics) >> Electrical Diagnostics >> DTC Troubleshooting >> P0122-TPS/App Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  DETERMINING IF RELATED ENGINE TPS DTCS ARE PRESENT 

    With the scan tool, check Engine DTCs, including pending DTCs and one trip failures.

    Are there any Engine TPS/APP DTCs present? 

    Yes 

    1. Refer to the DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
    2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1  

    No 

    1. Go To step  2).
  2. 2)  CHECK TO SEE IF DTC IS CURRENT 

    With the scan tool, record the DTC EVENT DATA to help identify the conditions in which the DTC was set.

    With the scan tool, erase Transmission DTCs.

    NOTE: To erase DTC EVENT DATA information, a BATTERY DISCONNECT must be performed. Performing a BATTERY DISCONNECT will reset all learned Transmission values to controller defaults which may lead to erratic shift schedules.

    Drive the vehicle and try to duplicate the conditions in which the DTC was reported by the DTC EVENT DATA.

    With the scan tool, read Transmission DTCs.

    Does this DTC reset? 

    Yes 

    1. 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, then program Pinion Factor in the Front Control Module. (Refer to ELECTRICAL/ELECTRONIC CONTROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL)
    2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1  

    No 

    1. Go To step  3).
  3. 3)  INTERMITTENT WIRING AND CONNECTORS 

    The conditions necessary to set this DTC are not present at this time.

    Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

    Wiggle the wires while checking for shorted and open circuits.

    Pay particular attention to the TPS/APP signal and sensor ground circuits.

    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 

    1. Repair as necessary.
    2. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1  

    No 

    1. Test Complete.
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