I have a 2011 Pathfinder and I’m having this issue now for the past 2 drive cycles where the abs actuator is constantly cycling irrespective of what speeds I’m driving - incidentally I didn’t drive past 50mph on both drives. So I’m not sure what it would do at highway speeds. Any time I hit the brakes it feels like ABS is kicking in, which is disconcerting, irrespective of what time I’m traveling or whether I’m driving straight or going through a
I noticed over the past month I would get abs to actuate the first time I hit the brakes, but now it’s all the time even after I’ve driven 20-25 mins with multiple brake actuations. I could be going 45mph and tap on the brakes, abs gets activated. This is all in clear weather conditions. No ABS light on the dash. Turning off VSC doesn’t result in any difference. Reservoir is just below the max line. Tires are all same size/make and are set to the same pressure +/- 1 psi.
I pulled out the ABS fuse and sure enough no ABS kicking on (but it also makes me lose the speedometer in addition to 4WD and causes slip, VSC, ABS and brakes lights all come on).
Using my blue driver, here are the codes that I got:
1. U1000 (this one popped up for Meter/MA, intelligent key - as current, transmission - as current, AWD/4WD)
2. P1808 (under AWD/4WD. Description is vehicle speed sensor - ABS)
3. P1815 (as current under transmission. Description is manual mode switch/circuit)
4. P0615 (as current under transmission. Description is starter relay).
None of the these codes came back when I cleared them out and it’s been about 40-45 miles since.
Yesterday, I was able to pull out the ABS module connector and take measurements per PBR’s thread on here.
Drivers-side Front: Red/Dark Green- 0.743 repeatedly 5-6 times.
Passenger-side Front: Black/White - 0.742 only once. Shows open after the first reading.
Passenger-side Rear: Purple/Light Green - 0.745 only once. Shows open after the first reading.
Driver-side Rear: Blue/Pink - 0.743 repeatedly 5-6 times.
I plugged in my Bluedriver and scanned it for codes while I was out on a drive. This time ABS/VSC Off/Slip lights all came on after 0.5 miles and the code Reader pulled C1115 (ABS sensor abnormal code).
After I got home last night from work, I was able to mess around for a few mins.
1. Put it up on jackstands and I can’t feel any odd play in the front wheels. They rock a little side to side but nothing when I grab them at 12 and 6. The small movement at 3 and 9 o’clock positions seems to be the slack in the steering rack maybe?
2. I rotated the wheels and couldn’t feel any difference really between the driver and passenger front wheels. The passenger side wheel has a bit of a metallic scraping sound when I rotate it. But it’s only when the wheel speeds up and slows down to come to a halt.
3. I took off the wheel speed sensor connector on the front passenger wheel. It read 0.732 consistently in the 2k ohm setting on my multimeter. I’m getting 12v on the harness side with key on and 0v with key off.
4. I tried to re-measure at the ABS controller harness again. Same as morning, I got consistent resistor readings for the front and rear drivers side sensors. I get zilch when I try to measure the resistance for the front and rear passenger sensors. This one is really confusing me - what would cause me to not be able to read any resistance at the module, but reading resistance at the sensor itself with verified continuity
5. The ABS/VSC Off/Slip lights all went off magically as soon as I was leaving work’s parking lot. Came home and scanned for codes, nothing. The C1115 from earlier is gone now.
6. Brakes aren’t warped and the front pads only have like 5k on them. The rear pads have about 40k on them. No pulsations in the brake pedal outside of the the awful ABS kicking on constantly.
6. There’s something in the drivers side that’s constantly clicking away as I’m driving - I think it’s coming from the ABS controller, but I can’t say for sure. Either ways, no matter what speed or what steering angle I’m at, tapping the brakes results in the ABS actuating.
Does anyone here have suggestions on how to proceed ? I’m lost and am hesitant to take it to a shop because I hate to have them throw parts at it in the hopes of fixing it.
TLDR: ABS activates all the time without any warning lights, irrespective if speed or steering angle. P1808 and C1115 pulled up once each but haven’t shown back up again once cleared. Continuity was wheel speed sensor itself but it won’t read anything at the ABS module connector for the passenger side (F&R).
I noticed over the past month I would get abs to actuate the first time I hit the brakes, but now it’s all the time even after I’ve driven 20-25 mins with multiple brake actuations. I could be going 45mph and tap on the brakes, abs gets activated. This is all in clear weather conditions. No ABS light on the dash. Turning off VSC doesn’t result in any difference. Reservoir is just below the max line. Tires are all same size/make and are set to the same pressure +/- 1 psi.
I pulled out the ABS fuse and sure enough no ABS kicking on (but it also makes me lose the speedometer in addition to 4WD and causes slip, VSC, ABS and brakes lights all come on).
Using my blue driver, here are the codes that I got:
1. U1000 (this one popped up for Meter/MA, intelligent key - as current, transmission - as current, AWD/4WD)
2. P1808 (under AWD/4WD. Description is vehicle speed sensor - ABS)
3. P1815 (as current under transmission. Description is manual mode switch/circuit)
4. P0615 (as current under transmission. Description is starter relay).
None of the these codes came back when I cleared them out and it’s been about 40-45 miles since.
Yesterday, I was able to pull out the ABS module connector and take measurements per PBR’s thread on here.
Drivers-side Front: Red/Dark Green- 0.743 repeatedly 5-6 times.
Passenger-side Front: Black/White - 0.742 only once. Shows open after the first reading.
Passenger-side Rear: Purple/Light Green - 0.745 only once. Shows open after the first reading.
Driver-side Rear: Blue/Pink - 0.743 repeatedly 5-6 times.
I plugged in my Bluedriver and scanned it for codes while I was out on a drive. This time ABS/VSC Off/Slip lights all came on after 0.5 miles and the code Reader pulled C1115 (ABS sensor abnormal code).
After I got home last night from work, I was able to mess around for a few mins.
1. Put it up on jackstands and I can’t feel any odd play in the front wheels. They rock a little side to side but nothing when I grab them at 12 and 6. The small movement at 3 and 9 o’clock positions seems to be the slack in the steering rack maybe?
2. I rotated the wheels and couldn’t feel any difference really between the driver and passenger front wheels. The passenger side wheel has a bit of a metallic scraping sound when I rotate it. But it’s only when the wheel speeds up and slows down to come to a halt.
3. I took off the wheel speed sensor connector on the front passenger wheel. It read 0.732 consistently in the 2k ohm setting on my multimeter. I’m getting 12v on the harness side with key on and 0v with key off.
4. I tried to re-measure at the ABS controller harness again. Same as morning, I got consistent resistor readings for the front and rear drivers side sensors. I get zilch when I try to measure the resistance for the front and rear passenger sensors. This one is really confusing me - what would cause me to not be able to read any resistance at the module, but reading resistance at the sensor itself with verified continuity
5. The ABS/VSC Off/Slip lights all went off magically as soon as I was leaving work’s parking lot. Came home and scanned for codes, nothing. The C1115 from earlier is gone now.
6. Brakes aren’t warped and the front pads only have like 5k on them. The rear pads have about 40k on them. No pulsations in the brake pedal outside of the the awful ABS kicking on constantly.
6. There’s something in the drivers side that’s constantly clicking away as I’m driving - I think it’s coming from the ABS controller, but I can’t say for sure. Either ways, no matter what speed or what steering angle I’m at, tapping the brakes results in the ABS actuating.
Does anyone here have suggestions on how to proceed ? I’m lost and am hesitant to take it to a shop because I hate to have them throw parts at it in the hopes of fixing it.
TLDR: ABS activates all the time without any warning lights, irrespective if speed or steering angle. P1808 and C1115 pulled up once each but haven’t shown back up again once cleared. Continuity was wheel speed sensor itself but it won’t read anything at the ABS module connector for the passenger side (F&R).