Symptoms - Immobilizer

Symptoms - Immobilizer

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


1. Perform the Diagnostic System Check - Vehicle (with HP2) (Initial Inspection and Diagnostic Overview)Diagnostic System Check - Vehicle (without HP2) (Initial Inspection and Diagnostic Overview) before using the symptom tables in order to verify that all of the following are true:

* There are no DTCs set.
* The control modules can communicate via the serial data links.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to Immobilizer Description and Operation (Immobilizer Description and Operation).

Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the systems. Refer to Checking Aftermarket Accessories (Component Tests and General Diagnostics).
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics).

Symptom List

Refer to Hood Ajar Indicator/Message Malfunction (Hood Ajar Indicator/Message Malfunction) in order to diagnose the symptom.