'8 Lancia Delta SRS light on, circuits open but no fault codes
Posted: 03 Mar 2017, 09:46
Hi, yesterday i have connected a 08 Delta with 2.6 version MES/FES (the latest i am eligible with my licencing) to read SRS fault codes.
The car was involved in an accident and had the front passenger and driver airbags deployed, plus right curtain airbag plus both front pretensioners.
The airbag warning light was ON on the dash, and when reading the actual values i could properly see the fired circuits as being open. So theoretically
i should be able to read the associated codes. To my surprise fault code section returned no errors (empty list).
Is it a problem with software, that particular SRS unit or just the way it's supposed to be?
I have seen Mazdas who, after a crash, "freeze" the ECU state just before the accident; therefore, the ecu is "locked", signals a fault but no open circuits ever get registered in the DTC memory. Any similarities?
Below some parts of log files.
ECU ISO code: EA 07 25 08 73
FIAT drawing number: 51808041
Hardware number: A2C53245722
Hardware version: 89
Software number: 6592870108
Software version: 1120
Homologation number:
ECU programming date: 12/04/2009
READING ERROR CODES:
No fault codes
READING PARAMETERS:
Driver airbag resistance (1st stage): 7.5 Ohm
Driver airbag resistance (2nd stage): 7.5 Ohm
Passenger airbag resistance (1st stage): 7.5 Ohm
Driver side airbag resistance: 3.5 Ohm
Passenger side airbag resistance: 3.5 Ohm
Driver knee guard resistance: 7.5 Ohm
Driver pretensioner resistance: 7.5 Ohm
Passenger pretensioner resistance: 7.5 Ohm
Rear pretensioner resistance (driver side): Ohm
Rear pretensioner resistance (passenger side): Ohm
Curtain airbag resistance (driver side): 3.5 Ohm
Curtain airbag resistance (pass. side): 7.5 Ohm
Pretensioners cut-in counter: 0
Side airbag trigger counter: 0
Failure indicator light: ON
Communication with Instrument Cluster (NQS): OK
Trip computer connection: OK
Body Computer connection: OK
Airbag control light: OK
Passenger airbag light status (from CAN): OK
Seat belt light status (from CAN): OK
TIA,
The car was involved in an accident and had the front passenger and driver airbags deployed, plus right curtain airbag plus both front pretensioners.
The airbag warning light was ON on the dash, and when reading the actual values i could properly see the fired circuits as being open. So theoretically
i should be able to read the associated codes. To my surprise fault code section returned no errors (empty list).
Is it a problem with software, that particular SRS unit or just the way it's supposed to be?
I have seen Mazdas who, after a crash, "freeze" the ECU state just before the accident; therefore, the ecu is "locked", signals a fault but no open circuits ever get registered in the DTC memory. Any similarities?
Below some parts of log files.
ECU ISO code: EA 07 25 08 73
FIAT drawing number: 51808041
Hardware number: A2C53245722
Hardware version: 89
Software number: 6592870108
Software version: 1120
Homologation number:
ECU programming date: 12/04/2009
READING ERROR CODES:
No fault codes
READING PARAMETERS:
Driver airbag resistance (1st stage): 7.5 Ohm
Driver airbag resistance (2nd stage): 7.5 Ohm
Passenger airbag resistance (1st stage): 7.5 Ohm
Driver side airbag resistance: 3.5 Ohm
Passenger side airbag resistance: 3.5 Ohm
Driver knee guard resistance: 7.5 Ohm
Driver pretensioner resistance: 7.5 Ohm
Passenger pretensioner resistance: 7.5 Ohm
Rear pretensioner resistance (driver side): Ohm
Rear pretensioner resistance (passenger side): Ohm
Curtain airbag resistance (driver side): 3.5 Ohm
Curtain airbag resistance (pass. side): 7.5 Ohm
Pretensioners cut-in counter: 0
Side airbag trigger counter: 0
Failure indicator light: ON
Communication with Instrument Cluster (NQS): OK
Trip computer connection: OK
Body Computer connection: OK
Airbag control light: OK
Passenger airbag light status (from CAN): OK
Seat belt light status (from CAN): OK
TIA,