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MrG Newbie
Joined: 11 Aug 2018 Posts: 9 Location: Sussex
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Posted: Sat Aug 11, 2018 20:37 Post subject: ABS codes |
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I’m wondering if anyone can point me in the direction of abs fault codes for my Isuzu rodeo. I have put a jumper into pin 4 and 12 on the Obd and have recorded the flash codes. I have eight but I can’t find out what they mean. Can anyone help out.
Thanks
G
Last edited by MrG on Sat Nov 24, 2018 20:56; edited 2 times in total |
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Posted: Sat Aug 11, 2018 20:37 Post subject: Google Ads keep this community free to join! |
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MrG Newbie
Joined: 11 Aug 2018 Posts: 9 Location: Sussex
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Posted: Sat Aug 11, 2018 21:07 Post subject: |
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The codes are as follows 21, 25, 26, 27, 31, 33, 77, 82 just a few faults! But what are they? |
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eithan h Moderator
Joined: 11 Dec 2005 Posts: 8195 Location: oxfordish
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Posted: Sun Aug 12, 2018 16:44 Post subject: |
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21, front right speed sensor short circuit or circuit open
25, front left speed sensor short circuit or circuit open
26, front left speed sensor incorrect signal
27, front left wheel speed sensor signal-tooth chipping
31, rear right wheel speed sensor short circuit or circuit open
33, rear right wheel speed sensor signal-tooth chipping
77, power supply low input
82, 4 wheel drive state input signal failure |
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MrG Newbie
Joined: 11 Aug 2018 Posts: 9 Location: Sussex
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Posted: Tue Aug 14, 2018 9:38 Post subject: |
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Thanks for the info. Hopefully these are old errors. I put a multimeter on each of the sensors. Left front stuck out as a bit strange as the resistance continued to rise and would not stay steady. Right front was steady around 4.6mohms which seemed better so have ordered a new sensor for the left front will install and report back |
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MrG Newbie
Joined: 11 Aug 2018 Posts: 9 Location: Sussex
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Posted: Thu Aug 16, 2018 7:50 Post subject: |
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Replaced the front left sensor. No change all the same codes flagging up. Any ideas? 💡 |
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eithan h Moderator
Joined: 11 Dec 2005 Posts: 8195 Location: oxfordish
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Posted: Thu Aug 16, 2018 18:13 Post subject: |
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need to check continuity between the pins on the ecu and the pins at the sensor and check for all feeds and earths at the ecu |
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MrG Newbie
Joined: 11 Aug 2018 Posts: 9 Location: Sussex
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Posted: Sat Aug 18, 2018 19:00 Post subject: |
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Success! Good call on the continuity check. Unplugged all sensors checked the continuity from each of pins in the cables back to the plug at the ecu. Sketched a diagram of the ecu plug and identified each pair at the pins in the ecu plug. I then checked the resistance of each pair at the ecu plug and I was getting all different readings from each sensor which to me didn’t look good or the resemble what I metered at each unplugged sensor. May have been some moisture so sprayed the plug with some wd40 replaced. When I drove 50mtrs the abs light went out.
Last edited by MrG on Sat Nov 24, 2018 20:51; edited 1 time in total |
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eithan h Moderator
Joined: 11 Dec 2005 Posts: 8195 Location: oxfordish
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Posted: Sun Aug 19, 2018 12:36 Post subject: |
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nice! |
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