Checking Power Supply And Ground Terminals
Checking the power supply
- Check the fuse for the SRS control module in the fusebox in the passenger compartment.NOTE: If a fuse is blown, check the circuit after the fuse for a short-circuit to ground. See Short-Circuit To Ground, Permanent Faults before replacing the fuse. Then replace the fuse. For further information about the circuit after the fuse, refer to the appropriate wiring diagram
- Check the power supply cable between the X-supply from the ignition switch and control module terminal #27B (55). Check for an open-circuit. See Open-Circuit, Permanent Faults
- Check the power supply cable between the 15-supply and control module terminal #28B (56). Check for an open-circuit. See Open-Circuit, Permanent Faults . Check for a short-circuit to ground. See Short-Circuit To Ground, Permanent Faults .
Checking the ground terminal
- The SRS control module is grounded when it is screwed into place in the car.
Remedy as necessary
Other information
- To access and replace the SRS control module and the connector, see Supplemental restraint system module (SRS), replacing .
- To connect the breakout box, see CONNECTING THE BREAKOUT BOX
- The voltage to terminal #27B (55) must be battery voltage when the ignition is in positions I and II
- The voltage to terminal #28B (56) must be battery voltage when the ignition is in positions I and II
- With the ignition off and the SRS control module installed, the resistance between the control module casing and the ground terminal should be approximately 0 Ω.
- For other values, see Signal Specification .