Checking wires

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Disconnect the 2 pin connector under the left seat.
  WARNING:

  Never use an ohmmeter or any other charged measuring instrument on a disconnected, undeployed explosive air bag. There is a risk that the air bag could be deployed

  CAUTION:

  Avoid touching the contact pins in the supplemental restraint system (SRS) control unit. There is a risk of an electrostatic discharge which can cause damage to the supplemental restraint system (SRS) control unit.

  Check the supplemental restraint system (SRS) control unit connector and the 2 pin connector housing and pins. The wire terminals must not be damaged or bent.

  Check the wire between the supplemental restraint system (SRS) control unit 4A (4) and the 2 pin connector 1 for an open circuit as described in Open-circuit, permanent faults .

  Check the wire between the supplemental restraint system (SRS) control unit 3A (3) and the 2 pin connector 2 for an open circuit as described in Open-circuit, permanent faults .

  Additional information: 

  • To access/replace the supplemental restraint system (SRS) control unit and connector, see Supplemental restraint system module (SRS), replacing .
  • To connect the test box, see Connecting the breakout box .
  • With ignition off and the 2 pin connector disconnected, the resistance between the 2 pin connector 1 and 2 (to the supplemental restraint system (SRS) control unit) should be approximately 22 k).
  • For information on repairing the SRS wiring, see Cable harness SRS system, repair .
  • For additional values, see Signal specification .
  Fig 3: Identifying 2-Bit Connector

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there a fault with the wire? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing front left side air bag