Theft Warning System Does Not Alarm

THEFT WARNING SYSTEM DOES NOT ALARM

System Description
To arm the system one of the following conditions must be met:
- Trunk and hood closed, and all doors closed with ignition switch in OFF position, and then smart entrance control unit receives LOCK signal from key cylinder switch or multi-remote controller.
- Any door (including hood and trunk lid) open with ignition switch in OFF position and front doors locked by key, lock/unlock switch or multi-remote controller, and then door closed.
When the above conditions are met, the security indicator lamp will illuminate for 30 seconds. (This is the pre-armed phase.) After about 30 seconds, the system will automatically shift to armed condition. The security indicator lamp will then begin blinking every 2.6 seconds.
To cancel the theft warning system one of the following must be done:
- Unlock the doors with the key or multi-remote controller.
- Open the trunk lid with the key or multi-remote controller.
When the theft warning system is armed, the alarm will activate if any of the following conditions are met:
- Engine hood, trunk lid or any door opened before canceling armed phase.
- Disconnecting the battery connector and connecting the connector before canceling armed phase.
When the alarm is activated, the headlamps flash and horn sound intermittently for 50 seconds.

Possible Cause
- Door switch
- Hood switch
- Trunk room lamp switch
- Circuit open or short

Diagnostic Repair Procedure (for confirmed incidents)
1. Check power supply and ground circuits for smart entrance control unit.
2. Check door switch input signal: Use CONSULT-II DATA MONITOR in THEFT WAR ALM to confirm that DOOR SW-ALL indicates ON when any door is open. Confirm that OFF when all doors are closed.
a. Check circuit between smart entrance control unit and door switch: Continuity/No shorts to ground.
b. Check circuit between door switch and ground: Continuity.
c. Door switch component test: Continuity should exist when the switch is in the released (open) position; no continuity in the depressed (closed) position.
3. Check hood switch fitting condition.
4. Check hood switch input signal: Use CONSULT-II DATA MONITOR in THEFT WAR ALM to confirm that HOOD SWITCH indicates ON when hood is open. Confirm OFF when hood is closed.
a. Check circuit between smart entrance control unit and hood switch: Continuity/No shorts to ground.
b. Check circuit between hood switch and ground: Continuity.
c. Hood switch component test: Continuity should exist when the switch is in the released (open) position; no continuity in the depressed (closed) position.
5. Check trunk room lamp switch input signal: Use CONSULT-II DATA MONITOR in THEFT WAR ALM to confirm that TRUNK SW indicates ON when trunk lid is open. Confirm OFF when trunk lid is closed.
a. Check circuit between smart entrance control unit and trunk room lamp switch: Continuity/No shorts to ground.
b. Check circuit between trunk room lamp switch and ground: Continuity.
c. Trunk room lamp switch component test: Continuity should exist when the switch is in the released (open) position; no continuity in the depressed (closed) position.