Interrupt Relay: Inspection
Measure the interrupt relay resistance between terminals (indicated in the table below) when connecting terminal No. 1 (without OnStar ®) or No. 4 (with OnStar ®) to battery positive terminal and terminal No. 4 (without OnStar ®) or No. 2 (with OnStar ®) to battery ground terminal.
Without OnStar ®:
CURRENT, TERMINAL NO AND STANDARD DESCRIPTION
| Current | Terminal No. | Standard |
|---|---|---|
| Flow | 2 - 6 | More than 1 MΩ |
| No flow | Less than 1 Ω |
With OnStar ®:
CURRENT, TERMINAL NO AND STANDARD DESCRIPTION
| Current | Terminal No. | Standard |
|---|---|---|
| Flow | 1 - 3 | More than 1 MΩ |
| No flow | Less than 1 Ω |
If the measured value is out of specifications indicated in table, replace security horn relay.