Legacy F4-2.5L SOHC (2003)
Alarm Horn Relay: Testing and Inspection
Security Horn Relay
Measure the security horn relay resistance between terminals (indicated in the table) when connecting terminal No. 1 (without OnStar (R)) or No. 3 (with
OnStar (R)) to battery positive terminal and terminal No. 4 (without OnStar (R)) or No. 2 (with OnStar (R)) to battery ground terminal.
Without OnStar (R):
With OnStar (R):
If the measured value is out of specifications indicated in table, replace security horn relay.
If NG, replace door lock actuator.