LEMON Manuals: Even more car manuals for everyone
Home >> Fiat >> 2020 >> 124 Spider Classica, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 ((Aw6R31 Automatic Transmission Control Module (TCM) - Electrical Diagnostics)) >> Diagnosis And Testing >> P0971-00 Pressure Control Solenoid 3 Control Circuit High >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK TRANSMISSION CONTROL MODULE WIRING 
    1. Go to Key-OFF status.
    2. Disconnect connector B of the Transmission Control Module.
    3. Check whether the terminals of the Shift Solenoid F on Transmission Control Module (O and Z of connector B) are disconnected, damaged or corroded.

      Are terminals disconnected, damaged or corroded?

      Yes 

      • Repair or replace the connector or the terminals.
      • Go to Step. Refer to  5.

      No 

      • Go to Step. Refer to  2.
  2. CHECK TRANSMISSION CONTROL MODULE (TCM) WIRING 
    1. Go to Key-ON condition (engine off)
    2. Measure the voltage on terminals O and Z of connector B of Transmission Control Module
    3. Ensure that the voltage measured on terminals is 0 volts

      Is the measured voltage 0 volts?

      Yes 

      • Go to Step. Refer to  5.

      No 

      • Go to Step. Refer to  3.
  3. CHECK TRANSMISSION CONTROL MODULE (TCM) WIRING 
    1. Go to Key-OFF status
    2. Disconnect the transmission output speed sensor connector
    3. Go to Key-ON condition (engine off)
    4. Measure the voltage on terminals O and B of transmission output speed sensor, wiring side
    5. Ensure that the voltage measured on terminals is 0 volts

      Is the measured voltage 0 volts?

      Yes 

      • Go to Step. Refer to  4.

      No 

      • Resolve the short circuit to battery on one of the terminals.
      • Go to Step. Refer to  5.
  4. CHECK THE CORRECT OPERATION OF THE SHIFT SOLENOID F 
    1. Connect the diagnosis equipment to the Transmission Control Module and check correct operation of the Shift Solenoid F.

      Is the Shift Solenoid F working properly?

      Yes 

      • Go to Step. Refer to  5.

      No 

      • Replace the solenoid valve assembly.
      • Go to Step. Refer to  5.
  5. CHECK CORRECT OPERATION OF TRANSMISSION CONTROL MODULE (TCM) 
    1. Perform the Transmission Control Module error deletion procedure.
    2. Start the engine.
    3. Heat engine and gearbox.
    4. Drive the vehicle with automatic transmission selector in D position and ensure that the gear is shifted from the first to the sixth.
    5. Check whether there is a fault.

      Is the error still present?

      Yes 

      No 

      • End of diagnosis.
scientia non olet · About LEMON Manuals