Step 
 | Action 
 | Value(s) 
 | Yes 
 | No 
 | 
Schematic Reference:
            
Theft Deterrent System Schematics  
Connector End View Reference:
Theft Deterrent System Connector End Views 
  
 | 
1 
 | Did you perform  the Theft Deterrent Diagnostic System Check? 
 | -- 
 | Go to 
 Step 2
          
                  
 | Go to 
Diagnostic System Check - Theft Deterrent  
 | 
2 
 | 
- Turn ON the ignition with the engine OFF.
 
- With a scan tool, observe the door key switch parameter in the  Body Control
Module (BCM) security data list.
 
 
Does the scan tool display INACTIVE? 
 | INACTIVE 
 | Go to 
 Step 3
          
                  
 | Go to 
 Step  11
        
                    
 | 
3 
 | 
- Turn OFF the ignition.
 
- With a scan tool, observe the door key switch parameter in the  BCM data
list.
 
- Insert the ignition key into the drivers door lock cylinder.
 
- Turn and hold the door lock cylinder to the UNLOCK position.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
Step  6
          
                  
 | Go to 
 Step  4
         
                       
 | 
4 
 | 
- Insert the ignition key into the passenger door lock cylinder.
 
- With a scan tool, observe the door key switch parameter in the  BCM data
list.
 
- Turn and hold the door lock cylinder to the UNLOCK position.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
 Step  9
         
                   
 | Go to 
Step  5
          
                      
 | 
5 
 | 
- Connect a 3 amp fused jumper wire between the signal circuit of  the door
key switch and ground.
 
- With a scan tool, observe the door key switch parameter in the  BCM data
list.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
Step  8
          
                  
 | Go to 
Step  18
         
                       
 | 
 6 
 | 
- Insert the ignition key into the passenger door lock cylinder.
 
- With a scan tool, observe the door key switch parameter in the  BCM data
list.
 
- Turn and hold the door lock cylinder to the UNLOCK position.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | System OK 
 | Go to 
Step  7
          
                  
 | 
7 
 | 
- Disconnect the RH door key switch connector.
 
- With a scan tool, observe the Door Key Switch parameter.
 
- Connect a 3 amp fused jumper wire between the signal circuit of  the door
key switch and ground.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
Step  8
          
                  
 | Go to 
Step  20
         
                       
 | 
8 
 | 
- Connect a 3 amp fused jumper wire between the signal circuit of  the door
key switch and the ground circuit at the RH door key switch connector.
 
- With the scan tool, observe the Door Key Switch parameter.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
 Step  19
        
                    
 | Go to 
 Step  21
        
                        
 | 
9 
 | 
- Disconnect the LH door key switch connector.
 
- With a scan tool, observe the Door Key Switch parameter.
 
- Connect a 3 amp fused jumper wire between the signal circuit of  the door
key switch and ground.
 
 
Does the scan tool display the specified ACTIVE? 
 | ACTIVE 
 | Go to 
Step 10
          
                  
 | Go to 
 Step 15
         
                   
 | 
10 
 | 
- Connect a 3 amp fused jumper wire between the signal circuit of  the door
key switch and the ground circuit at the LH door key switch connector.
 
- With the scan tool, observe the Door Key Switch parameter.
 
 
Does the scan tool display ACTIVE? 
 | ACTIVE 
 | Go to 
 Step  17
        
                    
 | Go to 
Step  16
         
                       
 | 
11 
 | 
- With a scan tool observe the Door Key Switch parameter.
 
- Disconnect the BCM connector containing the circuits to the door  key
switch.
 
 
Does the scan tool display INACTIVE? 
 | INACTIVE 
 | Go to 
 Step 12
         
                   
 | Go to 
 Step  22
        
                    
 | 
12 
 | 
- Reconnect the BCM connector.
 
- Disconnect the LH door key switch connector.
 
- With a scan tool observe the Door Key Switch parameter.
 
 
Does the scan tool display INACTIVE? 
 | INACTIVE 
 | Go to 
 Step 17
         
                   
 | Go to 
 Step  13
        
                    
 | 
13 
 | 
- Disconnect the RH door key switch connector.
 
- With a scan tool observe the Door Key Switch parameter.
 
 
Does the scan tool display INACTIVE? 
 | INACTIVE 
 | Go to 
 Step 19
         
                   
 | Go to 
 Step  14
        
                    
 | 
14 
 | Repair the short to ground in the  signal circuit of the door key switch between
the BCM and either door latch. 
Did you complete the repair? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
15 
 | Repair the open in the signal circuit of the door key switch  between the LH
door latch and C200. 
Did you complete the repair? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
16 
 | Repair the open in the ground circuit of the door key switch  between the LH
door key switch connector and G203. 
Did you complete the repair? 
 | -- 
 | Go to 
 Step  23
        
                    
 | -- 
 | 
17 
 | Replace the LH door latch. Refer to 
Front Side Door Lock Actuator Replacement 
  in Doors. 
Did you complete the replacement? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
18 
 | Repair the open in the signal circuit of the door key switch  between the BCM
and C200. 
Did you complete the repair? 
 | -- 
 | Go to 
 Step  23
        
                    
 | Go to 
 Step  22
        
                    
 | 
19 
 | Replace the RH door latch. Refer  to 
Front Side Door Lock Actuator Replacement 
    in Doors. 
Did you complete the replacement? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
20 
 | Repair the open in the signal circuit of the door key switch  between the RH
door key switch connector and C200. 
Did you complete the repair? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
21 
 | Repair the open in the ground circuit between the door  key switch connector
and G200. 
Did you complete the repair? 
 | -- 
 | Go to 
Step  23
         
                   
 | -- 
 | 
22 
 | 
- Replace the BCM. Refer to 
Body Control Module Replacement 
  in Body Control System.
 
- Program the BCM with the proper calibrations. Refer to 
Body Control Module (BCM) Programming/RPO Configuration 
  in Body Control
 System.
 
- Perform the learn procedure.
 
 
Did you complete the replacement? 
 | -- 
 | Go to 
 Step  23
        
                    
 | -- 
 | 
23 
 | 
- Reconnect any connectors that were removed for testing.
 
- Clear any DTCs that may have been set during this procedure.
 
- Attempt to set the CTD system. Refer to 
Content Theft Deterrent (CTD) Description and Operation 
 .
 
 
Does the system work as described? 
 | -- 
 | System OK 
 | Go to 
Diagnostic System Check - Theft Deterrent  
 |