For 1990-2009 cars

Important: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle .
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Theft Systems Description and Operation .

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the Theft Deterrent System. Refer to Checking Aftermarket Accessories .

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

• | Inspect that the transmitter is the correct model for the vehicle. An incorrect model will not operate the Theft Deterrent System.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

### Symptom List

Refer to the following list in order to diagnose the symptom:

• | Content Theft Deterrent (CTD) Alarm Mode Always On

• | Content Theft Deterrent (CTD) Alarm Mode Inoperative

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

• | Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

• | Security Indicator Always On or Flashing

• | Security Indicator Inoperative

• | Theft Deterrent Alarm Inoperative