Mazda MX-5 1990 Workshop Manual page 723

(G/Y)
(G~~)':~~)
H
AIR BAG SYSTEM
T
05UOTX-375
05UOTX-376
Step 4
1. Disconnect the backup battery connector.
2. Reconnect the negative battery cable.
3. Measure the voltage at terminal-wire (G/R) of the backup
battery connector.
Wire Voltage Action
12V Go to Step 5
(G/R)
OV Replace wire harness assembly
Step 5
1. Disconnect the negative battery cable.
2. Disconnect the diagnostic module connector.
3. Reconnect the negative battery cable.
4. Measure the voltage at the terminal-wires of the diagnostic
module connector.
Terminal-wire Voltage Action
1L
12V Next, check terminal-wire 1 J (GIY)
(WIG)
OV
Replace wire harness assembly
1J
12V Replace diagnostic module
(GIY)
OV Replace wire harness assembly
T-141