Mazda MX-5 NA silhouetteMX-5 NA

AIR BAG SYSTEM

T-142prose procedure

Flowchart No. 3

Flowchart No.
Description3
Fault indication
DescriptionWarning lamp flashes five times or nine times
Possible cause
DescriptionFaulty D-sensor (CNT, LH or RH)

Step 1

  1. 1
    Disconnect the negative battery cable.
    Photo showing the steering wheel with knee protector removed. Arrow points to the clock spring connectors (orange and blue) being disconnected.
    05U0TX-378
  2. 2
    Remove the knee protector, and disconnect the clock spring connectors (Orange and blue).
  3. 3
    Disconnect all D-sensor (CNT, LH and RH) connectors, and measure the resistance of each sensor.
    Resistance: Approx. 1.2 kΩ
    Photo showing measurement of resistance at the D-sensor connector with a multimeter (ohm symbol shown).
    05U0TX-379
  4. 4
    If not as specified, replace the sensor.
  5. 5
    If correct, go to Step 2.

Step 2

  1. 1
    Reconnect all D-sensor connectors.
    Diagnostic module connector with labels for terminals being tested. Connectors marked (BLACK) and (GRY); wires labeled 2L (BR/B), 1A (BR/R), 1C (BR/G). A multimeter is connected for resistance measurement.
    05U0TX-380
  2. 2
    Disconnect the diagnostic module connector.
  3. 3
    Measure the resistance between the following terminal-wire of the diagnostic module connector and a body ground.

Step 2 Resistance check

1C (BR/G)
ResistanceApprox. 1.2 kΩ
ActionNext, check terminal-wire 1A (BR/R)
1C (BR/G)
ResistanceOther 1.2 kΩ
ActionReplace wire harness
1A (BR/R)
ResistanceApprox. 1.2 kΩ
ActionNext, check terminal-wire 2L (BR/B)
1A (BR/R)
ResistanceOther 1.2 kΩ
ActionReplace wire harness
2L (BR/B)
ResistanceApprox. 1.2 kΩ
ActionReplace diagnostic module
2L (BR/B)
ResistanceOther 1.2 kΩ
ActionReplace wire harness

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