Antitheft Relay: Testing and Inspection
Interrupt RelayINSPECTION
Measure the interrupt relay resistance between terminals (indicated in the table) when connecting terminal No. 1 (without OnStar (R)) or No 4 (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