For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Component Connector End Views DEFINITION: The content theft deterrent (CTD) system 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 or Rear Compartment Lid Lock Cylinder Replacement. Did you complete the replacement? | Go to Step 11 | --
10 | Note: 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