Trouble Shooting

WARNING: Deactivate air bag system before performing any service operation. See AIR BAG RESTRAINT SYSTEMS article. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy.

NOTE: Verify power door lock system is operating properly before trouble shooting anti-theft system. See SYMPTOM DIAGNOSIS (DOOR LOCK CONTROL SYSTEM) table. Anti-theft system will not operate properly if power door lock system is not operating properly. When anti-theft system is not operating properly, lower door windows and determine under what conditions system does not operate or malfunctions. See SYMPTOM DIAGNOSIS (ANTI-THEFT SYSTEM) table.

SYMPTOM DIAGNOSIS (DOOR LOCK CONTROL SYSTEM)

Problem

Inspect

All Functions Of Door Lock Control System Do Not Operate

⁽¹⁾ ECU Power Source Circuit
⁽¹⁾ Actuator Power Source Circuit
⁽¹⁾ Luggage Compartment Door Opener Motor Circuit
⁽¹⁾ Door Lock Motor Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

All Or Some Doors Are Not Locked/Unlocked With Door Lock Control Switch & Door Key Lock & Unlock Switch (Luggage Compartment Door Opener Function Okay)

⁽¹⁾ Door Lock Control Switch Circuit
⁽¹⁾ Door Key Lock & Unlock Switch Circuit
⁽¹⁾ Door Lock Motor Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

Doors Cannot Be Locked/Unlocked With Door Lock Control Switch (Door Key Lock & Unlock Switch Operates Okay)

⁽¹⁾ Door Lock Control Switch Circuit
⁽¹⁾ Key Unlock Warning Switch Circuit
⁽¹⁾ Door Open Detection Switch Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

Doors Cannot Be Locked/Unlocked With Door Key Lock & Unlock Switch (Door Lock Control Switch Operates Okay)

⁽¹⁾ Door Key Lock & Unlock Switch Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

Key Confinement Prevention Function Does Not Operate (Doors Lock/Unlock With Door Key Lock & Unlock Switch)

⁽¹⁾ Key Unlock Warning Switch Circuit
⁽¹⁾ Door Unlock Detection Switch Circuit
⁽¹⁾ Door Open Detection Switch Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

Luggage Compartment Opening Function Does Not Operate

⁽¹⁾ Luggage Compartment Door Opener Switch Circuit
⁽¹⁾ Luggage Compartment Door Opener Motor Circuit
⁽²⁾ Anti-Theft/Door Lock Control ECU

⁽¹⁾	Perform appropriate circuit test under CIRCUIT TESTS . If more than one circuit test is listed, perform tests in order listed.

⁽²⁾	Perform ANTI-THEFT/DOOR LOCK CONTROL ECU PIN VOLTAGE TESTS under COMPONENT TESTS.

SYMPTOM DIAGNOSIS (ANTI-THEFT SYSTEM)

Problem

⁽¹⁾ Inspect

System Cannot Be Set

Anti-Theft Indicator Circuit
Luggage Compartment Door Courtesy Switch Circuit
Door Unlock Detection Switch Circuit
Engine Hood Courtesy Switch Circuit

Indicator Does Not Flash When System Is Set

Anti-Theft Indicator Circuit

With System Set, System Does Not Operate

When Door Is Unlocked

Door Unlock Detection Switch Circuit

Luggage Compartment Door Is Opened By Other Than Key

Luggage Compartment Door Courtesy Switch Circuit

Engine Hood Is Opened

Engine Hood Courtesy Switch Circuit

While System Is In Warning Operation

Standard Horns Do Not Sound

Horn Relay Circuit

Anti-Theft Horn Does Not Sound

Anti-Theft Horn Circuit

Headlights Do Not Flash

Headlight Control Relay Circuit

Taillights Do Not Flash

Taillight Control Relay Circuit

Starter Interrupt System Does Not Operate

Starter Relay Circuit

System Cannot Be Canceled When Ignition Switch Is In ON Or ACC Position

Ignition Switch Circuit

System Does Not Cancel When Luggage Compartment Door Is Opened With Key

Luggage Compartment Door Key Lock & Unlock Switch Circuit

Starter Does Not Operate With System Disarmed

Starter Relay Circuit

Standard Horns Sound When System Is Not Set

Horn Relay Circuit

Anti-Theft Horn Sounds When System Is Not Set

Anti-Theft Horn Circuit

Headlights Flash When System Is Not Set

Headlight Control Relay Circuit

Taillights Flash When System Is Not Set

Taillight Control Relay Circuit

⁽¹⁾	Perform appropriate circuit test under CIRCUIT TESTS . If more than one test is listed, perform tests in order listed.