Interrupt Relay: Inspection
Measure the interrupt relay resistance between terminals (indicated in the table below) when connecting terminal No. 1 (without OnStarr (R)) or No. 4 (with OnStarr (R)) to battery positive terminal and terminal No. 4 (without OnStarr (R)) or No. 2 (with OnStarr (R)) to battery ground terminal.
If the measured value is out of specifications indicated in table, replace security horn relay.