Mazda MX-5 NA silhouetteMX-5 NA

AIR BAG SYSTEM — Inspection — D-sensor (CNT) and S-sensor

T-158prose procedure
Continued from T-157

D-sensor (CNT)

D-sensor (CNT) Inspection

  1. 1
    Disconnect the negative battery cable.
  2. 2
    Remove the knee protector, and disconnect the clock spring connectors (Orange and blue).
    Steering wheel with callout zoom showing the D-sensor (CNT) clock spring connectors being disconnected.
    05U0TX-441
  3. 3
    Disconnect the D-sensor (CNT) connectors.
  4. 4
    Measure resistance between the terminals of the sensor connectors.
    Do not connect an ohmmeter to the harness side connector. Connect the ohmmeter to the sensor side connectors only.
    Wire harness section showing two connectors 'a (BLUE)' and 'b (ORANGE)' with an ohmmeter connected between terminals a and b on the sensor side.
    05U0TX-442
  5. 5
    If not as specified, replace the sensor.
    Do not try to repair the wire harness.

D-sensor (CNT) resistance

a (blue)—b (orange)
ResistanceApprox. 1.2 kΩ

S-sensor

S-sensor Inspection

  1. 1
    Disconnect the negative battery cable.
  2. 2
    Remove the knee protector, and disconnect the clock spring connectors (Orange and blue).
  3. 3
    Remove the instrument panel assembly.
  4. 4
    Disconnect the S-sensor connectors.
    Steering wheel with callout zoom showing the S-sensor connectors being disconnected.
    05U0TX-444
  5. 4
    Check resistance between the terminals of the sensor connectors.
    Do not connect an ohmmeter to the harness side connector. Connect the ohmmeter to the sensor side connectors only.
    S-sensor connector with labelled terminals a, b, c, d, e and an ohmmeter being applied to check continuity between pairs of terminals.
    05U0TX-445
  6. 5
    If not as specified, replace the sensor.
    Do not try to repair the wire harness.

S-sensor continuity

b—e
ContinuityYes
c—d
ContinuityYes
b—c
ContinuityNo
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