1985-1998 [Subscribe to Daily Digest] |
Mike Johnson,
from:
SAAB Workbook 1992 9000 Airbag
FS1 = Driver's side (USA) front sensor.
ISAT codes 45341 (Permanent) and 25431 (Intermittent)
FS1, resistance to ground too high.
"Remedy 6
FS1 High Resistance to Chassis Ground
Fault Code 45341
1. Unscrew the left front sensor. Thoroughly clean the base of the sensor, the captive nuts in the body and the mounting screws. DO NOT use chemicals, use a wire brush or a bottoming tap to clean the threads. Apply dielectric grease to the captive nuts and screw threads, remount the sensor. Erase all codes. TURN THE KEY ON, WAIT AT LEAST 60 SECONDS, TURN THE KEY OFF BRIEFLY AND THEN ON AGAIN FOR AT LEAST 60 SECONDS MORE; THEN LOOK FOR FAULT CODES WITH ISAT.
Is the fault code gone?
YES You have found the problem.
NO The problem is in the wiring harness or internally in the front sensor itself. Isolate the fault using the procedure given in remedy 4 giving particular emphasis to the wire running from ECU pin #7 to the middle (pin #2) terminal of the sensor."
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Remedy 4
FS1,Open Circuit
Fault Code 45321
(paraphrased.)
1. Inspect connector pins 3, 2, & 1 at the left front sensor 332A.
2. Inspect connector pins 8, 7, & 26 at the SRS ECU 331.
3. Replace the left front sensor 332A.
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Here is what I suggest:
Clean the battery posts and terminals.
Reconnect them AFTER completing the following tests.
Disconnect the left front sensor.
Remove the center console carpet trim from the passenger side, and remove the SRS ECU. Spray some Q-TIPS with CRC QD Electronic Cleaner and clean the male pins on the SRS ECU as well as the female pins on its harness connector. Repeat for the left front sensor.
If you have an ohmmeter, verify continuity of the GREEN RED wire by measuring resistance between SRS pin 8 and LF Sensor pin 3. Repeat for the YELLOW RED wire betwen SRS pin 7 and LF Sensor pin 2, and for the BLUE RED wire between SRS pin 26 and LF Sensor pin 1.
(You might want to compare those readings with the right front sensor FS2. BROWN WHITE wire SRS pin 27 to RF Sensor pin 1, GRAY WHITE wire SRS pin 9 to RF Sensor pin 2, and BLACK WHITE wire SRS pin 10 to RF Sensor pin 3.)
The resistance readings should be similar and less than infinite.
High resistance indicates a corroded or poor connection.
Reconnect the sensors, the SRS ECU, and the battery.
If the SRS light remains illuminated, the ECU has likely failed.
The voice of experience speaks. I drove with an intermittet SRS light for a few weeks before replacing the SRS ECU. Three months later, I experienced dual-airbag deployment. While my 95 Ruby Red CS was totalled, the only injury I sustained was a severly bruised ego.
Happy Trails!
posted by 67.34.14...
, Mon, 22 Mar 2010 09:14:28, Mon, 22 Mar 2010 06:14:58
, Mon, 22 Mar 2010 20:51:08, Tue, 23 Mar 2010 08:23:26
, Mon, 22 Mar 2010 22:54:05, Tue, 23 Mar 2010 00:16:39, Thu, 25 Mar 2010 06:15:07, Thu, 25 Mar 2010 06:22:28
1, Fri, 19 Oct 2018 14:25:541
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