ArcAngelCustoms
New member
- Joined
- Jan 7, 2018
My new 96' 940, reading fault codes with a multimeter?
Hi guys and gals!
I've just gone and bought myself a 96 940 with the b230fk lump. It has the engine light and srs light on the dash, I've disconnected the battery to reset the ecu, it cleared the engine light for about 20 miles but now it's back! I found a thread somewhere about using a multimeter to check the fault codes from the obd socket in the centre console and had a go but I've run into problems!
Right, here's the thread
https://www.volvoforums.org.uk/showthread.php?t=46943
Following the instructions, pos lead of the multimeter on pin 16, neg lead on pin 3, i het a reading of 1.7v, when I turn the key to position 2, it jumps to 3.2v. According to the link, it should be dropping to 0? I tried putting another cable linking pin 3 to pin 5 and get a reading of 12v as expected, remove the cable aa per instructions and.... Nothing.
Does anyone have any experience with this? The car's running really rough and idling all over the place when cold, I'd quite like to diagnose this quick with a multimeter rather than waiting until I get the time and parts to build one of those fancy flashy light boxes.
Thanks in advance!
Hi guys and gals!
I've just gone and bought myself a 96 940 with the b230fk lump. It has the engine light and srs light on the dash, I've disconnected the battery to reset the ecu, it cleared the engine light for about 20 miles but now it's back! I found a thread somewhere about using a multimeter to check the fault codes from the obd socket in the centre console and had a go but I've run into problems!
Right, here's the thread
https://www.volvoforums.org.uk/showthread.php?t=46943
Following the instructions, pos lead of the multimeter on pin 16, neg lead on pin 3, i het a reading of 1.7v, when I turn the key to position 2, it jumps to 3.2v. According to the link, it should be dropping to 0? I tried putting another cable linking pin 3 to pin 5 and get a reading of 12v as expected, remove the cable aa per instructions and.... Nothing.
Does anyone have any experience with this? The car's running really rough and idling all over the place when cold, I'd quite like to diagnose this quick with a multimeter rather than waiting until I get the time and parts to build one of those fancy flashy light boxes.
Thanks in advance!
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