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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1340 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Content Theft Deterrent (CTD) Does Not Disarm with Key Lock

Content Theft Deterrent (CTD) Does Not Disarm with Key Lock

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Content Theft Deterrent (CTD) Does Not Disarm with Key Lock

Step Action Yes No
Schematic Reference:  Theft Deterrent System Schematics  
1 Did you review the Theft Deterrent Description and Operation and perform the necessary inspections? Go to Step 2  Go to Symptoms - Theft Deterrent 
2 Verify that the Theft Deterrent System does not disarm with driver front door key lock.
Does the system operate normally?
Go to Step 3  Go to Step 4 
3 Verify that the Theft Deterrent System does not disarm with passenger front door key lock.
Does the system operate normally?
Go to Testing for Electrical Intermittents in Wiring Systems Go to Step 5 
4
  1. Remove the driver door key cylinder switch connector.
  2. With the key in the door lock, check continuity between the white wire and the white and black wire on the key cylinder switch connector.
Is continuity present?
Go to Step 8  Go to Step 7 
5
  1. Remove the passenger door key cylinder switch connector.
  2. With the key in the door lock, check continuity between the white and red wire and the white and black wire on the key cylinder switch connector.
Is continuity present?
Go to Step 11  Go to Step 6 
6 Replace the Passenger Door Lock Detection Switch
Did you complete the repair?
Go to Step 14  -
7 Replace the Driver Door Lock Detection Switch
Did you complete the repair?
Go to Step 14  -
8 Check for continuity to ground in the ground circuit at cavity 7 of the Driver Door Lock Actuator. Refer to Circuit Testing in Wiring Systems.
Is a ground present?
Go to Step 9  Go to Step 10 
9 Repair the open or high resistance in the unlock signal circuit between cavity 8 of the door lock actuator and cavity 37 of the Theft Deterrent module.
Did you complete the repair?
Go to Step 14  -
10 Repair the open in the ground circuit between cavity 7 of the driver door lock actuator and Ground 200. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14  -
11 Check for continuity to ground in the ground circuit at cavity 8 of the Passenger Door Lock Actuator. Refer to Circuit Testing in Wiring Systems.
Is a ground present?
Go to Step 13  Go to Step 12 
12 Repair the open or high resistance in the unlock signal circuit between cavity 5 of the door lock actuator and cavity 18 of the Theft Deterrent module
Did you complete the repair?
Go to Step 14  -
13 Repair the open in the ground circuit between cavity 7 of the driver door lock actuator and Ground 200. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14  -
14 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3