A4 - Check Control Module Battery/Ignition Supply

- Key OFF.

- Disconnect the passive restraint control module connectors.

- Measure the voltage on the "Y" wires at passive restraint control module connector C1.

- Key ON.

- Measure the voltage on the "BK/Y" wire at passive restraint control module connector C2.

- Are the voltages greater than 10 volts?

YES -- Go to A5. A5 - Check Passive Restraint Control Module Grounds

NO -- Service the wire(s) in question.