Checking components and wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Disconnect special tool 9511506 from the connector for the left-hand side impact protection (SIPS) bag.
  WARNING:

  Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected, non-deployed, pyrotechnical airbag. This could deploy the airbag

  CAUTION:

  Do not touch the terminal pins in the SRS control module. There is a risk of static discharge. This could damage the SRS control module.

  Check the female and male parts of the connector for the SRS control module and the 2-pin connector. The cable terminals must not be damaged or pressed back.

  Check the cable between the SRS control module terminal #4A (4) and connector terminal #1 on the left-hand side impact protection (SIPS) bag for an open-circuit according to Open-circuit, permanent faults .

  Check the cable between the SRS control module terminal #3A (3) and connector terminal #2 on the left-hand side impact protection (SIPS) bag for an open-circuit according to Open-circuit, permanent faults .

  HINT: Check the integrated capacitor in the igniter connector: Measure the resistance. 

  HINT: With the ignition off, connect the test instrument probes between terminals #1 and #2 on the connector for the driver's airbag. The ohmmeter reading should rise rapidly to infinity. 

  HINT: Reverse the position of the ohmmeter positive and negative test probes. Connect them to the connector as in the previous measurement. The ohmmeter reading should drop rapidly to approximately 0 Ω and then increase to infinity. 

  Remedy as necessary.

  Other information: 

  • To access / replace the connector for the left-hand side impact protection (SIPS) bag, see Airbag driver and passenger (SRS), replacing .
  • To connect the breakout box, see Connecting the breakout box .
  • With the ignition off and the 4-pin connector disconnected, the resistance between terminals #1 and #2 of the 4-pin connector (SRS control module side) should be approximately 22 kΩ.
  • For information about the repair of SRS wiring, see Cable harness SRS system, repair .
  • For other values, see Signal specification .
  Fig 2: Identifying 2-Bit Connector

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue when the fault has been remedied. 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing front left side air bag