Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read DTCM 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 THE DRIVETRAIN FOR MECHANICAL DAMAGE
1. Lift vehicle on hoist and visually inspect all axles, the Propeller shaft and the Rear Differential for damage.
  Were any worn or damaged parts found?
  
  Yes
  - Repair as necessary in accordance with the service information.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .
  No
  - Go To 3
RE-CALIBRATE THE TRANSFER CASE
1. Using the Scan tool, perform the First Calibration routine to calibrate the AWD Clutch.
2. Using the Scan tool, perform the Power Down Calibration routine 3 times in a row.
3. With the Scan tool, erase DTCs.
4. Cycle Ignition from on to off and back to on.
5. Using the Scan tool INPUT/OUTPUT controls, set the torque parameters to 1300Nm for 5 seconds and 0Nm for o seconds.
6. Cycle Ignition from on to off and back to on and read DTCs.
  Is this DTC still present?
  
  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
  - Test is complete.
  - Perform the DTCM VERIFICATION TEST. Refer to DTCM VERIFICATION TEST .