Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk1 2002-2008 => Topic started by: bukko0 on November 04, 2019, 02:46:14 PM
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hi, i have a 2004 1.2 honda jazz which has an airbag light fault, the light is on permanently, with a fault code of 07-9
front right side airbag sensor faulty, i have changed the sensor ,same code,had the wiring checked ,no fault,changed the ecu, still the same fault code, anyone got any ideas what i can do next ?
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Hi
Have a look at the hondajazzfit site
http://www.hondafitjazz.com/manual.html
( cut and paste thecabove purl into a web browser / Safari.
There is a detailed description on how to diagnose most Dtc faults, and how to trouble shoot them.
Regards
Ben
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hi, i have a 2004 1.2 honda jazz which has an airbag light fault, the light is on permanently, with a fault code of 07-9
front right side airbag sensor faulty, i have changed the sensor ,same code,had the wiring checked ,no fault,changed the ecu, still the same fault code, anyone got any ideas what i can do next ?
Are you sure the code is 7-9?
Faulty front right sensor is code 9-7. If it is that, follow the fault finding procedure here
http://www.hondafitjazz.com/manual/A00/HTML/00/SAA2E00K79100081097FAAT00.HTML
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thank you sparky paul, you are right the fault code is 09-7 and not 07-9, thanks for the info it is very helpful regards Tony
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thank you sparky paul, you are right the fault code is 09-7 and not 07-9, thanks for the info it is very helpful regards Tony
It's a page from the manual Brendan posted above, you will find all manner of useful things there.
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hi again , i have tried two different front right sensors, two different ecu's, wired the sensor directly into the ecu bypassing the original wiring and it still comes up with the same fault code. 09-7 faulty right front airbag sensor. is there anything else i can try , that i have not already done. does the ecu reset its self or does it have to be honda reset.
any help would be appreciated, thanks
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It might be worth while having a bona fide auto electrician check it out. I had an issue with the SRS on my Volvo and it was fixed quickly and relatively cheaply after a visit to my local auto electrician.
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have been there and done that £145.00, he said it must be the ecu, hence the change , but still the same fault code comes up
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I think the light should go off by itself for that fault, but it does say to clear the SRS ECU memory in the page linked to above, if you still have problems.
However, I'm guessing you changed the ECU after the sensor?
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hi there all ,, i have tried everything suggested, but still no joy i still have fault code 09-7, apart from a stick of dynamite, any other thoughts ?
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Was it a new sensor or a used one? OEM or factor part?
Have you swapped L & R sensors to see if the fault moves to the left side or not?
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it was a new sensor from the honda main dealers and swapping the sensors over still came up with the same code. i even tried connecting the sensor directly to the ecu but the fault was still the same, which is why i am at a loss as to what to do next
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it was a new sensor from the honda main dealers and swapping the sensors over still came up with the same code. i even tried connecting the sensor directly to the ecu but the fault was still the same, which is why i am at a loss as to what to do next
Well, that rules out sensor, and you would think it would rule out wiring.
When you changed the ECU, had you already changed the sensor?
I think the next step for me would be to connect HDS and try to reset the codes on the SRS, see what comes back up. As far as I can make out, the code should reset itself once the bad sensor is replaced, but it obviously isn't doing.
For you to have picked up a bad SRS module with the same fault seems very unlikely. So long as the donor vehicle had not deployed airbags, it should be ok - otherwise the ECU would be locked.
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i Changed the sensor and the ecu with the battery disconnectedand reconnected the battery , no change,connecting my analyser to the multi plug socket , under Heading SRS it comes up with permanent fault, underneath that is temporary fault. reading the fault code 09-7, on do you wish to clear code , yes, command being sent to unit, the fault code is still there, and it will not clear.. the reason i am trying to cure the fault without going to another auto electrician is that i am now well over two hundred pounds into the kitty and still no joy, i do appreciate your help but how much do i have to
throw at the car to get it running normally
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Not familiar with your code reader, only have experience with using HDS and basic OBD2 on the Jazz. However, I would have thought a temporary fault would indicate that the fault is cleared, but the code is not being reset for some reason. Not sure. Some diagnostic tools cannot access ancilliary systems fully.
I think I would be looking for someone with access to HDS, perhaps a good independent rather than main dealer. There are a small number of members on here with HDS who might be able to help, if you post your general location, or might be able to recommend someone.
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Check all the fuses especially fuse no 13 (10amp) This sounds like an electrical/ wiring issue as you have tried the obvious. If there is a short down to earth no amount of resets will make that dissapear.
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Check all the fuses especially fuse no 13 (10amp) This sounds like an electrical/ wiring issue as you have tried the obvious. If there is a short down to earth no amount of resets will make that dissapear.
OP reckons he has changed sensor, ECU, and bypassed the wiring to connect the sensor directly to the ECU. I presume he disconnected the existing wiring when connecting the sensor directly.
I would have thought wiring, but by all accounts, he appears to have ruled it out.
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Hi
Is it possible that the sensor connection to the ecu have been swapped by mistake and its reading the front left sensor instead of the right front ( which we know is good ) I know in the past I have put the wrong connector on after a head change which made it run as rough as a dog. This was sorted after reference to the photographs that I took prior to starting work.
Ben
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i have connected the right sensor to the left wiring plug and no fault came up, disconnected the plug and it registered a fault with the left hand sensor, reconnected the left hand sensor and no fault was found , tried the left hand sensor to the right hand wiring plug and it still came up with the same fault code, which at first i thought must be a wiring harness fault, which is why i connected the right hand sensor directly to the SRS ECU still the same fault code 09-7.
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Well we now know the right sensor is good. The left sensor and wiring is good. I would think that the fault is in the wiring either an intermittent break/ or corrosion of the connectors. Check the resistance of the cable from left sensor cable end to end. Ie from the ecu to sensor. Now you will have a ohms reading that you can use when you test the right sensor cables.
Ben
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Hi
I just reread your post, it maybe a fault with the cabling feeding the ecu, broken/ corroded terminal hence the same fault maintained even with a new ecu.
Ben
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Hi
Does your code reader Actually turn off srs/abs faults as a lot of the cheaper ones will not turn them off. It maybe just the case of deleting the code to clear the light.
Ben
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my engine analyser displays the fault code asking do you want to read or delete , hitting the delete button ,delete code being sent to ecu is displayed, but the fault is still there afterwards
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Hi
As you have created additional faults when swapping from left to right sensors you should have stored codes. See if you code reader reads both stored and historical codes. If , when you tell it to erase codes and it clears the historical codes. This proves you code reader is working correctly, and also your original fault is still there. If it fails to clear the historical codes get hold of another code reader capable of erasing the codes, then see what happens.
Ben
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Front right sensor thats the one on the drivers side correct?
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Hi
Disconnect the left hand side sensor and put a known good sensor on the the left hand side . Make sure the right hand side has a know good sensor also and see if that cures the fault
Ben
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have tried that , swapping the right hand sensor to the left hand side , no fault registered, swapped the left hand side to the right hand side, same fault code appeared, so both the sensors seem to be ok, then connected the right hand sensor to the ecu direct bypassing the wiring harness and still the same fault code. so i have tried every combination i can think off but still cannot find the answer
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What I am getting at is, I think it’s the left sensor that’s defective. Other that that I am running out of suggestions.
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Try connecting the both sensors direct to the same side of the ECU as you did the RH sensor, using the same wiring. That will check if your test wiring is correct. There is nothing worse than testing a circuit with a faulty test rig!
The other answer, however unlikely, is that both ECUs have the same fault.
Take it the second ECU is from a breakers? Perhaps that was one of the reasons the car was scrapped!
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Try this, take the left sensor out and put aside. Put the new one you purchased in its place. If the left sensor is defective when you swap it a fault will show. Unless you are looking at the reader to see that the fault has transferred to the right hand side. You have not identified the left sensor. It would be easy to assume that it is working correctly when in fact it is not.
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I'd still like to rule out a logged fault that is stuck, for some reason, by clearing the SRS memory with HDS. Also, as I mentioned earlier, and Jocko too, that as unlikely as it seems, there is the small possibility that the replacement ECU is also faulty.
As one famous sleuth said, "when you have excluded the impossible, whatever remains, however improbable, must be the truth.” ;)
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The code reader reads the front right sensor as the drivers side when looking from the inside of the car looking out. Is it possible that you have identified the right hand sensor when looking at it from the front of the car ? This would make left hand sensor in front of the passengers seat.
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Yes, the protocol for describing sides in a vehicle always take the reference from the driver. Hence right and left. Offside and nearside depends on whether a vehicle is right or left hand drive (again using the right and left protocol).
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Yes, the protocol for describing sides in a vehicle always take the reference from the driver.
Not be the first time someone got that mixed up!
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Hi
Have you cleared the fault?
Ben
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no not yet