rotarypower101

iTrader: (1)

AirBag Light Flashes 4 times = Faulty Rear Safing Sensor.

See several error lists that include this phrase, but have not found a thread detailing a resolution to this issue.

Has anyone had this error and could advise?

What is a "Rear Safing Sensor" and where might it or any of its likely faulty connections be located?

Might it be a faulty module?

Is this likely out of spec, bad, or even corrosion related? What might be the first things to check?

I can't think of anything other than age that would caused this to throw a code.

If possible, would like to track down the issue and squish the bug or fault causing this error light.

Does anyone know a bit about this issue, and could outline a plan of attack to resolve the issue?

Get 4 blinks of the AirBag light, pause and repeat

gracer7-rx7

iTrader: (16)

maybe it's the abs sensor in one of the rear hubs?

nashman69g

iTrader: (3)

This is from the 94 Body Elec Manual...Can't remember if the 93 is different besides the lack of passenger airbag.

rotarypower101

iTrader: (1)

Hi, apologies for the delayed responses, been out having fun and just forgot to check back on the thread I posted.... thank you for the responses!

May I ask why you would deduce it might be a rear ABS sensor so I can understand how that might influence the fault error code I see?

rotarypower101

iTrader: (1)

Will poke around and try the service manual tests and see if I can resolve anything.

Possible anyone has seen an error like this, and might have feedback on what went wrong and your resolution?

gracer7-rx7

iTrader: (16)

You mentioned "rear stafing sensor" so I assumed you had done some troubleshooting to determine it was the rear sensor as opposed to one of the fronts. You can probably ignore me and focus on the FSM sheets that were kindly posted.

nashman69g

iTrader: (3)

The safing sensor is just another redundant contact switch for redundancy to reduce unintended airbag release for redundancy . This is a link which mentions the location of the rear safing sensor and how to test. https://www.rotaryheads.com/PDF/3rd_...Electrical.pdf
Rear Safing Sensor ......... (3) In Passenger Compartment, Forward Of A/C-Heater Case
³ 5 ³Flashes 4 Times ³ Faulty Rear Safing Sensor ³
³ ³ ³ (See DIAGNOSTIC TEST NO. 5) ³
DIAGNOSTIC TEST NO. 5
Warning Light Flashes 4 Times
1) Disable air bag system. See DISABLING & ACTIVATING AIR BAG
SYSTEM. Disconnect diagnostic module connectors. Check continuity
between terminals 1J (Green wire) and 2L (Orange wire) of diagnostic
module connectors. If there is no continuity, go to step ).
2) If there is continuity, check continuity between terminals
1L (Pink wire) and 2K (Light Green wire) of diagnostic module
connectors. If there is no continuity, go to step 4). If there is
continuity, check continuity between terminals 2L (Orange wire) and 2K
(Light Green wire) of diagnostic module connectors.AIR BAG RESTRAINT SYSTEM
Article Text (p. 11)
1993 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 19, 2001 11:52AM
3) If there is no continuity, go to step 4). If there is
continuity, check continuity between ground and terminals 2L (Orange
wire) and 2K (Light Green wire) of diagnostic module connector. If
there is continuity in each case, replace diagnostic module.
4) Disconnect rear safing sensor connector. Check for
continuity between terminals "A" and "B" of rear safing sensor
connector. See Fig. 6. If there is no continuity, replace rear safing
sensor.
5) If there is continuity, check for continuity between
terminals "C" and "D" of rear safing sensor connector. If there is no
continuity, replace rear safing sensor. If there is continuity,
replace wiring harness.

Safing sensor test

And for some additional educational reading on safing sensor from Denso:

https://www.denso-ten.com/business/t...l/pdf/24-3.pdf