Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With a scan tool, read TIPM DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go to step 2
  No
  - Go to step 5
CHECK THE (T16) TRANSMISSION CONTROL OUTPUT

Fig 1: CHECKING TRANSMISSION CONTROL OUTPUT CIRCUIT
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C2 harness connector.
3. Connect the positive probe of an ammeter to battery positive and connect the negative probe to the (T16) Transmission Control Output circuit in the TIPM C2 harness connector.
4. Read the amperage on the ammeter.
  Does the amperage read below 2.0 amps?
  
  Yes
  - Go to step 4
  No
  - Go to 3
CHECK THE PCM

Fig 2: CHECKING TRANSMISSION CONTROL OUTPUT CIRCUIT
Courtesy of CHRYSLER LLC
1. Disconnect the ammeter from the TIPM C2 harness connector and battery positive.
2. Disconnect the PCM C4 harness connector.
3. Reconnect the positive probe of an ammeter to battery positive and connect the negative probe to the (T16) Transmission Control Output circuit in the TIPM C2 harness connector.
4. Read the amperage on the ammeter.
  Does the amperage read below 2.0 amps?
  
  Yes
  - 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 42RLE TRANSMISSION VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
CHECK THE TRANSMISSION SOLENOIDS

Fig 3: CHECKING TRANSMISSION SOLENOIDS
Courtesy of CHRYSLER LLC
1. Disconnect the ammeter from the TIPM C2 harness connector.
2. Disconnect the PCM C4 harness connector and install Miller tool #8815.
3. Connect the positive probe of an ammeter to battery positive and connect the negative probe to the (T16) Transmission Control Output circuit in the TIPM C2 harness connector.
4. While monitoring the amperage reading of the ammeter and using a jumper wire, jump each solenoid control circuit to ground one at a time in the appropriate terminals of Miller tool #8815.
  NOTE: The amperage draw should be approximately.02 milliampere on each solenoid circuit with the PCM C4 harness connector disconnected.
  
  Does the amperage read between.05 and.015 milliampere ±.005 milliampere on each solenoid tested?
  
  Yes
  - Replace the Totally Integrated Control Module in accordance with the Service Information.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Depending on the identified circuit in the test, replace either Transmission Solenoid/Pressure Switch Assembly or the Line Pressure Solenoid (if equipped) in accordance with the Service Information.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
CHECK THE 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 wires while checking for shorted and open circuits.
4. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Test Complete.