LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1425 (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 does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. 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 Value(s) Yes No
Schematic Reference: Theft Deterrent System Schematics 
Connector End View Reference: Theft Deterrent System Connector End Views 
DEFINITION: The CTD system does not disarm when the vehicle is unlocked with the key.
1 Did you perform the Theft Deterrent Diagnostic System Check? - Go toStep 2  Go to Diagnostic System Check - Theft Deterrent 
2
  1. Turn ON the ignition with the engine OFF.
  2. With a scan tool, observe the door key switch parameter in the Driver Door Module (DDM) data list.
Does the scan tool display INACTIVE?		 INACTIVE Go to Step 3  Go to Step 6 
3
  1. Turn OFF the ignition.
  2. With a scan tool, observe the door key switch parameter in the DDM data list.
  3. Insert the ignition key into the drivers door lock cylinder.
  4. Turn and hold the door lock cylinder to the UNLOCK position.
Does the scan tool display ACTIVE?		 ACTIVE Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 4 
4
  1. Disconnect the LH mini-wedge door jamb switch connector.
  2. With a scan tool, observe the Door Key Switch parameter.
  3. 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 5  Go to Step 9 
5
  1. Connect a 3 amp fused jumper wire between the signal circuit of the door key switch and the ground circuit at the LH mini-wedge door jamb switch connector.
  2. With the scan tool, observe the Door Key Switch parameter.
Does the scan tool display ACTIVE?		 ACTIVE Go to Step 10  Go to Step 11 
6
  1. With a scan tool observe the Door Key Switch parameter.
  2. Disconnect the DDM connector C2.
Does the scan tool display INACTIVE?		 INACTIVE Go to Step 7  Go to Step 12 
7
  1. Reconnect the DDM connector C2.
  2. Disconnect the LH mini-wedge door jamb switch connector.
  3. With a scan tool observe the Door Key Switch parameter.
Does the scan tool display INACTIVE?		 INACTIVE Go to Step 11  Go to Step 8 
8 Repair the short to ground in the signal circuit of the door key switch between the DDM and mini-wedge door jamb switch connector.
Did you complete the repair?		 - Go to Step 13  -
9 Repair the open in the signal circuit of the door key switch between the LH mini-wedge door jamb switch connector and the DDM.
Did you complete the repair?		 - Go to Step 13  -
10 Repair the open in the ground circuit of the door key switch between the LH mini-wedge door jamb switch connector and the DDM.
Did you complete the repair?		 - Go to Step 13  -
11 Replace the LH door latch. Refer to Latch Replacement - Front Door in Doors.
Did you complete the replacement?		 - Go to Step 13  -
12 Replace the Drivers Door Module (DDM). Refer to Switch Replacement - Door Lock and Side Window - Driver in Doors.
Did you complete the replacement?		 - Go to Step 13  -
13
  1. Reconnect any connectors that were removed for testing.
  2. Clear any DTCs that may have been set during this procedure.
  3. 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 
scientia non olet · About LEMON Manuals