Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read TCM DTCs and record on the repair order.
2. Record the Event Data and Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
5. With the scan tool, read TCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK PRESSURE CONTROL SOLENOID CIRCUITS FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the TCM Harness Connector.
3. Disconnect the Transmission Assembly harness connector.
4. Check for continuity between ground and the following circuits at the Transmission Assembly harness connector.
  - (T325) Pressure Control Solenoid B
  - (T326) Pressure Control Solenoid C
  - (T328) Pressure Control Solenoid D
  - (T329) Pressure Control Solenoid E
  Is there continuity between ground and any of the circuits?
  
  Yes
  - Repair the effected circuit(s) for a short to ground.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK PRESSURE CONTROL SOLENOID CIRCUITS FOR A SHORT TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage on the following circuits at the Transmission Assembly harness connector.
  - (T325) Pressure Control Solenoid B
  - (T326) Pressure Control Solenoid C
  - (T328) Pressure Control Solenoid D
  - (T329) Pressure Control Solenoid E
  Is there any voltage present on any of the circuits?
  
  Yes
  - Repair the effected circuit(s) for a short to voltage.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 948TE-9HP48 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 4
CHECK PRESSURE CONTROL SOLENOID CIRCUITS FOR A SHORT TO ANOTHER CIRCUIT
1. Turn the ignition off.
2. Check for continuity between each of the following circuits and all other circuits at the TCM harness connector.
  - (T325) Pressure Control Solenoid B
  - (T326) Pressure Control Solenoid C
  - (T328) Pressure Control Solenoid D
  - (T329) Pressure Control Solenoid E
  Is there continuity between the above circuits and any other circuit?
  
  Yes
  - Repair the effected circuits for a short to another circuit.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 948TE-9HP48 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 5
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all TCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
5. Reconnect all TCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Using the recorded Event and Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
10. With the scan tool, read TCM DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Valve Body in accordance with the Service Information. Refer to VALVE BODY, REMOVAL AND INSTALLATION .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 948TE-9HP48 TRANSMISSION VERIFICATION TEST .
  - If the system does not pass the Verification Test, replace the Transmission Control Module (TCM) in accordance with the Service information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 948TE-9HP48 TRANSMISSION VERIFICATION TEST .
  No
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 948TE-9HP48 TRANSMISSION VERIFICATION TEST .
  - Test complete.