Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read DTCs and record on the repair order.
2. Record the Environmental Data.
3. With the scan tool, erase DTCs.
4. Using the recorded 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 DTCM DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITIONS TEST. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK FOR OTHER DTCS
1. Refer to the recorded DTCs.
  Are there any Charging System or Under voltage DTCs active or pending?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DTC INDEX .
  No
  - Go To 3
CHECK FOR AN ACTIVE CONDITION
1. Turn the Ignition on.
2. Using the Scan tool, perform the First Calibration routine.
3. Using the Scan tool, perform the Power Down Calibration routine.
  Was a negative request received by performing either or both of the routines?
  
  Yes
  - Go To 5
  No
  - Go To 4
RESET THE CLUTCH TORQUE PARAMETERS
1. Using the Scan tool, erase the DTCs.
2. Using the Scan tool Input/Output Controls, reset the torque parameters to 1300Nm for 5 seconds and 0Nm for 0 seconds.
3. Cycle the Ignition from on to off back to on and read the DTCs.
  Is this DTC still present?
  
  Yes
  - Go To 5
  No
  - Repair complete.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
CHECK THE DRIVETRAIN CONTROL MODULE FOR PROPER OPERATION
1. Replace the DTCM Module in accordance with the Service information. Refer to MODULE, DRIVETRAIN CONTROL (DTCM), REMOVAL AND INSTALLATION .
2. With the scan tool, read DTCM Module DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Transfer Case in accordance with the Service information. Refer to REMOVAL AND INSTALLATION .
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
  No
  - Repair is complete.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .