Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR ENGINE CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)
1. With the scan tool, read Powertrain Control Module (PCM) DTCs.
  Are any Engine Charging System DTCs set?
  
  Yes
  - Repair Charging System DTCs. Refer to DTC INDEX .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK TCM SYSTEM VOLTAGE
1. Start the Engine.
2. With the scan tool, under Transmission, check system voltage.
  Is the Transmission system voltage above 9.0 volts?
  
  Yes
  - Go To 4
  No
  - Go To 3
CHECK THE TCM BATTERY CIRCUIT
1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the battery circuit at the TCM connector.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  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 .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
  No
  - Repair the battery 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
  - Test complete.