Mazda MX-5 1990 Workshop Manual page 724

T
AIR BAG SYSTEM
Flowchart No.
• Fault indication ..... Warning lamp flashes five times or nine times
3
• Possible cause ...... Faulty D·sensor (CNT, LH or RH)
05UOTX·377
Caution
• Before troubleshooting, read SERVICE PRECAUTION on page T -133.
05UOTX·380
T--142
Step 1
1. Disconnect the negative battery cable.
2. Remove the knee protector, and disconnect the clock spring
connectors (Orange and blue).
3. Disconnect all D-sensor (CNT, LH and RH) connectors, and
measu re the resistance of each sensor.
Resistance: Approx. 1.2 kO
4. If not as specified, replace the sensor.
5. If correct, go to Step 2.
Step 2
1. Reconnect all D-sensor connectors.
2. Disconnect the diagnostic module connector.
3. Measure the resistance between the following terminal-wire
of the diagnostic module connector and a body ground.
Terminal-wire Resistance Action
1C
Approx. 1.2 kO Next, check terminal-wire 1 A (BR/R)
(BRIG)
Other 1.2 kO Replace wire harness
1A
Approx. 1.2 kO Next, check terminal-wire 2L (BR/B)
(BR/R)
Other 1.2 kO
Replace wire harness
2L
Approx. 1.2 kO
Replace diagnostic module
(BR/B)
Other 1.2 kO Replace wire harness