For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views DEFINITION: The content theft deterrent (CTD) alarm does not disarm when using a key in any door or rear compartment lock cylinder.
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Disconnect the remote control door lock receiver (RCDLR).
2. Probe the inoperative lock tamper switch circuit at the RCDLR with a test light to B+.

Does the test light illuminate?

Go to Step 6

Go to Step 3

3 | With the test light still connected, unlock the inoperative lock tamper switch with a key. Does the test light illuminate? | Go to Step 8 | Go to Step 4
4 |

1. Disconnect the inoperative tamper switch connector.
2. Test for an open in the tamper switch ground circuit. Refer to Testing for Continuity and Wiring Repairs .

Did you find and correct the condition?

Go to Step 11

Go to Step 5

5 | Test for an open in the door lock tamper switch signal circuit. Refer to Testing for Continuity and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 7
6 | Test for a short to ground in the inoperative lock tamper switch circuit. Refer to Testing for Short to Ground and Wiring Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 7
7 | Test for a poor connection at the inoperative door lock tamper switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 9
8 | Test for a poor connection at the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 10
9 | Replace the inoperative lock tamper switch. Refer to Front Side Door Lock Replacement in Door or Rear Compartment Lid Lock Cylinder Replacement . Did you complete the replacement? | Go to Step 11 | --
10 | Important: Perform the program procedure for the ISU. Replace the RCDLR. Refer to Remote Control Door Lock Receiver Replacement . Did you complete the replacement? | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2