Diagnostic Test

CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
1. With the scan tool, read Powertrain Control Module (PCM) DTCs.
  Are any Charging System DTCs set?
  
  Yes
  - Repair the Charging System DTCs. Refer to DTC INDEX .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. With the scan tool, read Transmission Control Module (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 3
  No
  - Go To 4
CHECK THE (A901) FUSED B+ CIRCUIT
1. Turn the ignition off.
2. Disconnect the TCM 16-way connector.
3. Turn the ignition on.
4. Measure the voltage on the (A901) Fused B+ circuit at pin 13 in the TCM harness connector.
  Is the voltage above 9.5 volts?
  
  Yes
  - Using the schematics as a guide, check the TCM connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Repair the (A901) Fused B+ circuit for an open or high resistance.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
CHECK 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. Check for any Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  - Test Complete.