Trouble Shooting

NOTE: Perform immobilizer system self-diagnostics before performing trouble shooting. See PRELIMINARY PROCEDURE under SELF-DIAGNOSTIC SYSTEM .

TROUBLE SHOOTING SYMPTOMS

Problem

Inspect

Immobilizer Not Set (Engine Starts W/Incorrect Key Codes)

⁽¹⁾ ECM

Engine Does Not Start

⁽²⁾ Key

⁽¹⁾ Wiring Harness

⁽³⁾ Transponder Key Coil

Amplifier

⁽¹⁾ ECM

Security Indicator Is Always On

⁽⁴⁾ Security Indicator

⁽¹⁾ Wiring Harness

⁽¹⁾ ECM

Security Indicator Always On (Although Code Has Been Registered In Automatic Registration Mode)

⁽¹⁾ Wiring Harness

⁽³⁾ Transponder Key Coil

Amplifier

⁽¹⁾ ECM

Security Indicator Is Off (When Immobilizer DTC Is Output)

⁽¹⁾ Wiring Harness

⁽³⁾ Transponder Key Coil

Amplifier

⁽¹⁾ ECM

Security Indicator Is Off (When Immobilizer DTC Is Not Output)

⁽¹⁾ Wiring Harness

⁽¹⁾ ECM

Security Indicator Is Flashing Abnormally

⁽¹⁾ Wiring Harness

⁽¹⁾ ECM

⁽¹⁾	Check for opens or shorts in wiring. See WIRING DIAGRAMS . Perform PIN VOLTAGE TESTS . Repair or replace components as necessary.

⁽²⁾	Ensure key used to start engine is registered. Also check to see if vehicle will start with other registered keys.

⁽³⁾	Check transponder key coil. See TRANSPONDER KEY COIL under COMPONENT TESTS.

⁽⁴⁾	Complete automatic registration mode. See NEW TRANSPONDER KEY CODE PROGRAMMING under PROGRAMMING.