Diagnostic Test

CHECK FOR TCM TIPM DTCS
1. With the scan tool read DTCs.
  Are there any TIPM TCM Power Control Circuit or TCM Power Input DTCs present?
  
  Yes
  - See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Diagnosis and Testing and perform the appropriate diagnostic procedure.
  No
  - Go to step 2
CHECK IF THE DTC DATA SHOWS THE CURRENT DTC
1. With the scan tool, check the Event Data.
  Does the Event Data show data for DTC P0846?
  
  Yes
  - Go to step 3
  No
  - See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Diagnosis and Testing and perform the appropriate diagnostic procedure shown in the Event Data.
CHECK IF MULTIPLE DTCS ARE PRESENT
1. With the scan tool, check DTCs.
  Are there two or more related pressure switch rationality DTCs present in addition to P0846?
  
  Yes
  - Go to step 4
  No
  - Go to step 7
CHECK IF ALL THE PRESSURE SWITCHES READ CLOSED
1. With the scan tool, check the Event Data for P0846.
  NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure.
  
  Do all the pressure switches read CLOSED in the Event Data for P0846?
  
  Yes
  - See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Diagnosis and Testing and perform the diagnostics for P0882.
  No
  - Go to step 5
CHECK IF ALL THE PRESSURE SWITCHES READ OPEN
1. In the Event Data recorded earlier, read the state of all pressure switches.
  Do all the pressure switches read OPEN?
  
  Yes
  - Go to step 6
  No
  - Go to step 7
CHECK FOR LOW LINE PRESSURE
1. In the Event Data recorded earlier, compare the Line Pressure and the Desired Line Pressure.
  Is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure?
  
  Yes
  - Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information. Refer to SOLENOID, PRESSURE CONTROL .
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
CHECK IF THE DTC SET IN PARK, NEUTRAL, OR REVERSE
1. With the scan tool, check the Event Data for P0846.
  NOTE: Make sure to record all Event Data stored in the scan tool for future reference in this test procedure.
  
  Does the Event Data show the DTC P0846 set in Park, Neutral, or Reverse?
  
  Yes
  - Go to step 12
  No
  - Go to step 8
CHECK IF THE 2C PRESSURE SWITCH READS CLOSED
1. With the scan tool, check the Event Data for P0846.
  Does the Event Data show the 2C Pressure Switch reading CLOSED?
  
  Yes
  - Go to step 10
  No
  - Go to step 9
CHECK THE LINE PRESSURE
1. In the Event Data recorded earlier, compare the Line Pressure and the Desired Line Pressure.
  Is the Line Pressure less than 40 psi, and significantly below the Desired Line Pressure?
  
  Yes
  - Repair as necessary to correct low line pressure. Check fluid level and adjust as necessary. If fluid level is OK, check the Primary Oil Filter seal for a split, crack, or improperly installed. If the filter and seal are OK, check the Main Regulator Valve in the Oil Pump. Refer to the Service Information for the above procedures.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Go to step 15
CHECK THE PCM AND WIRING
1. Turn the ignition off to the lock position.
2. Remove the Ignition Switch Feed fuse from the TIPM.
  CAUTION: Removal of the Ignition Switch Feed fuse from the TIPM will prevent the vehicle from being started in gear.
  
  WARNING: The Ignition Switch Feed fuse must be removed from the TIPM. Failure to do so can result in possible serious or fatal injury.
3. Install the Transmission Simulator 8333.
4. Ignition on, engine not running.
5. With the Transmission Simulator, turn the Pressure Switch selector switch to the 2C position.
6. With the scan tool, monitor the 2C Pressure Switch while pressing the Pressure Switch test button on the Transmission Simulator.
  Did the state of the 2C Pressure Switch change while pressing the Pressure Switch Test button?
  
  Yes
  - Go to step 11
  No
  - Go to step 12
CHECK THE TRANSMISSION SOLENOID/TRS ASSEMBLY
1. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
2. Wiggle the wires while checking for shorted and open circuits.
  Where there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR AN OPEN

Fig 1: Checking 2C Pressure Switch Sense Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position.
2. Disconnect the Transmission Simulator 8333.
3. Disconnect the PCM C4 harness connector.
4. Connect the PCM Pinout Box 8815 to the PCM C4 harness connector.
  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 the PCM Pinout Box 8815 to perform diagnosis.
5. Measure the resistance of the (T147) 2C Pressure Switch Sense circuit between the Transmission Solenoid/TRS Assembly harness connect and the appropriate terminal of the PCM Pinout Box 8815.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the (T147) 2C Pressure Switch Sense circuit for an open.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Go to step 13
CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking 2C Pressure Switch Sense Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (T147) 2C Pressure Switch Sense circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T147) 2C Pressure Switch Sense circuit for a short to ground.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Go to step 14
CHECK THE (T147) 2C PRESSURE SWITCH SENSE CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT

Fig 3: Checking 2C Pressure Switch Sense Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance between the (T147) 2C Pressure Switch Sense circuit and all the other circuits in the Transmission Solenoid/TRS Assembly harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (T147) 2C Pressure Switch Sense circuit for a short to another circuit(s).
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  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 and program the PCM in accordance with the Service Information. With the scan tool, perform Quick Learn.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
CHECK IF THE #5 AND/OR #7 CHECK BALL IS CUT OR DAMAGED
1. Turn the Ignition off to the lock position.
2. Remove the Valve Body Assembly in accordance with the Service Information.
3. Inspect the #5 and #7 check balls for any cuts or damage.
4. Check for an extra check ball in the passage downstream from the #7 check ball pocket.
5. Inspect the 2C accumulator piston and seals and also the 2C tower seal on top of the valve body. Refer to the Service Information.
  Where there any problems found?
  
  Yes
  - Repair as necessary. Check for excessive clutch debris in the transmission oil pan. If excessive clutch debris is present, repair 2C clutch as necessary. Refer to the Service Information for proper repair procedures.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Go to step 16
CHECK FOR EXCESSIVE FLUID LEAKAGE WITHIN THE 2C CLUTCH CIRCUIT
1. Air check the 2C Clutch hydraulic circuit. Refer to the Service Information.
  NOTE: This hydraulic clutch circuit contains a small bleed orifice. Small leakage is considered normal.
  
  Was there excessive air leakage in the 2C Clutch hydraulic circuit?
  
  Yes
  - Repair as necessary. Refer to the Service Information.
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
  No
  - Replace the Transmission Solenoid/TRS Assembly in accordance with the Service Information. Refer to SOLENOID, PRESSURE CONTROL .
  - Perform the 545RFE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .