Intermittent fault

Check the connectors for the SRS module and inflatable curtain. Check for contact resistance and oxidation. See Contact resistance and oxidation . Check for loose connections. See Loose connections (terminals) .

Check the cable terminals in the female and male ends of the connector. The cable terminals must not be damaged or pressed back.

Check the cable between SRS control module terminals #21A (21) and #22A (22) and connector terminals #1 and #3 on the left-hand inflatable curtain for an intermittent open-circuit according to Open-circuit, intermittent faults .

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

HINT: With the ignition off, connect the test instrument probes between driver's airbag connector terminals #1 and #3. 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 and replace the SRS control module connector, see Supplemental restraint system module (SRS), replacing
• To access the connector for the left-hand inflatable curtain, see IC (inflatable curtain) module, replacing
• To connect the breakout box, see Connecting the breakout box
• With the ignition off and the inflatable curtain connector disconnected, the resistance between the inflatable curtain connector terminals #1 and #3 (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:

  1999-2004 

  • See Signal specification .

  2005-2006 

  • See Signal specification .

Fig 2: Identifying Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Refer to Information