94 Miata has a air bag light that blinks once.

ANONYMOUS

MEMBER
1994 MAZDA MIATA
231,000 MILES

94 miata has a air bag light that blinks once, pauses the blinks three times. This just started couple of days ago. If not a cheap fix then I am going to disconnect the air bag. I understand this is some kind of code?

Does it mean the code is 13?

Cant afford to have a tec look at it so any help would be appreciated

1 Reply

KHLOW2008

MECHANIC
41,815 POSTS

Yes, that uis a Code 13.

CODE 13

1. Disable air bag system. Connect negative battery cable. Turn ignition on. Observe AIR BAG warning light. If AIR BAG warning light displays Code 13, go to step 4). If AIR BAG warning light displays a code other than 13, go to next step.

2. Disconnect negative battery cable. Remove driver air bag module. Connect driver air bag module Orange and Blue clockspring connectors. Connect negative battery cable. Turn ignition on. Observe AIR BAG warning light. If AIR BAG warning light displays Code 13, replace clockspring assembly. If AIR BAG warning light displays a code other than 13, go to next step.

3. Turn ignition off. Disconnect negative battery cable. Connect passenger air bag module Orange and Blue clockspring connectors. Connect negative battery cable. Turn ignition on. Observe AIR BAG warning light. If AIR BAG warning light displays Code 13, replace passenger air bag module. If AIR BAG warning light displays a code other than 13, replace driver air bag module.

4. Turn ignition off. Disconnect diagnostic module connectors. Using a DVOM, check for continuity between diagnostic module connector terminal 2F and ground. If continuity is not present, got to next step. If continuity is present, replace wiring harness.

5. Using a DVOM, check for continuity between diagnostic module connector terminal 2G and ground. If continuity is not present, go step 7). If continuity is present, go to next step.

6. Using a DVOM, check for continuity between diagnostic module connector terminal 2D and ground. If continuity is present, go to next step. If continuity is not present, go to step 8).

7. Disconnect S-sensor connector. Using a DVOM, check for continuity between S-sensor connector (sensor side) terminal "C" and ground. If continuity is present, replace S-sensor. If continuity is not present, replace wiring harness.

8. Using a DVOM, check resistance between diagnostic module connector terminals 1C, 1A, 2L and ground one at a time. If resistance on all terminals was 1.18 k-ohms, replace diagnostic module. If resistance was not 1.18 k-ohms, on one or more terminals, test suspect D-sensor. Go to next step.

9. Using a DVOM, check resistance between suspect D-sensor connector (sensor side) terminal "A" and ground. See Fig. 8. If resistance is 1.18 k-ohms, replace wiring harness. If resistance is not 1.18 k-ohms, replace suspect D-sensor.

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