Clock Spring Check

Required Special Tools: 

• MB991613: SRS Check Harness
• MB991223 (MB991222): Harness Set (Probe)

If any malfunction is found in steps  1 through  4, replace the clock spring with a new one.

1. Check the connectors and protective tube for damage, and the terminals for deformation.
2. Visually check the case for damage.
   Fig 1: Identifying Protective Tube

   Courtesy of DAIMLERCHRYSLER CORPORATION
3. Align the paint mark of special tool MB991613 connector number 4 with the notch in clock spring connector number 2 (arrow in the illustration) to connect the connectors number 2 and 4. See Fig 2.
4. Measure the resistance between the terminals 22 and 23 of special tool MB991613 connector number 5.

   Standard value: less than 0.4 Ω 

   Fig 2: Measuring Resistance Between Terminals

   Courtesy of DAIMLERCHRYSLER CORPORATION