Step 
 | Action 
 | Value(s) 
 | Yes 
 | No 
 | 
1 
 | Was the Transfer Case System Check performed? 
 | -- 
 | 
Go to Step 2
   
      
 | Go to 
Transfer Case Diagnostic System Check  
 | 
2 
 | 
- Install a Scan Tool 
.
 
- Turn ignition ON, engine OFF.
 
- Using the scan tool, select the instrument cluster, command the
SERVICE AWD/4WD lamp on.
 
 
Does the  lamp go on? 
 | -- 
 | 
Go to Step 3
          
 | 
Go to Step 4
          
 | 
3 
 | Replace
the transfer case shift control module. Refer to Transfer Case Shift Control Module Replacement 
Is the repair complete? 
 | -- 
 | 
Go to Step 5
          
 | -- 
 | 
4 
 | Replace the instrument cluster.  
Is the action complete? 
 | -- 
 | 
Go to Step 5
          
 | -- 
 | 
5 
 | 
- Reconnect all previously disconnected components.
 
- Turn the ignition ON, engine OFF.
 
- Use the scan tool in order to clear all DTCs.
 
 
Is the action complete? 
 | -- 
 | Go to 
Transfer Case Diagnostic System Check  
 | -- 
 |