I need help on this code p1175 it's for a 1999 Xj8 is it the wheel speed sensor?

 

Are you sure it's a P1175? not C1175. What OBD tool are you using?

 

Sean, do you think...ABS solder joint fix?

 

The solder joint fix is for a C1095 code. I have never seen any reference to P1175 for Jag, but it is a fuel trim code for GM cars.

 

C1175 Left Rear Wheel Speed Sensor Circuit Fault
Wheel speed sensor open or short circuit
Wheel speed sensor to CM circuit: high resistance open circuit or short circuit to ground
Wheel speed sensor failure
CM failure

Is the wheel bearing OK?? Did the sensor get damaged by a faulty bearing??

Is the reluctor ring loose??

Link harness continuity??

bob

 

Hi Eddie,

The document at the link below, courtesy of our member Gus, shows the terminals at the ABS module connector where you can measure for proper resistance to simultaneously check the wheel speed sensor and its wiring harness. For C1175, you would measure the resistance between terminals 21 and 22 of the ABS module harness connector.

ABS Hard Fault Check Sheet from Jagrepair.com

The document states that the typical resistance should be 2.00k to 2.2k ohms, but on an X100 I recently measured, the resistances were in the 1.4k to 1.5k range and all but one of the sensors was operating properly.

If the resistance for the left rear sensor seems good, leave your test leads connected to the ABS module harness connector and position your ohmmeter so you can see it from the rear left wheel. Watch the meter as you flex and bend the wiring harness between the sensor and the point where it disappears under the body. If there is an intermittent break in the wire, you'll see the meter reading jump to Overload or infinite resistance. This is what I discovered on the X100, and repairing the break in the harness solved the problem.

It can also help to clean the wheel speed sensor and the reluctor ring inside the hub. Accumulated gunk can interfere with proper signal generation.

Cheers,

Don

 

So have we concluded that it's actually a C1175? Sean B asked what tester was used in post#2 and it would be interesting to know.

 

Ok I went to autozone and it is C1175 and they were using a Crafstman OBD 2 scanner he said it was the Left side rear wheel speed sensor , but could a wheel speed sensor cause a check engine light to come on ???
the light comes on and off all the time and yesterday it came on at the worst possible time, when I was doing the damn smog emissions test!!!

 

I did not think Craftsman sold a reader that could detect Jag body codes. If it is the left rear, that I believe is used for speed input, so I suppose it could result in a check engine light, but you should also see the abs light and the speedometer should be affected.

I would have the codes read elsewhere to be certain, better yet at a foreign car specialist that can read Jag codes.

 

Yeah the scanner the guy from autozone gave the code but not a description so we went inside and he searched online and found it was the wheel speed sensor, sorry i forgot to add the following lights are also on , The ABS light and I have a Stability Control Fail message on and those are always on, the check engine is the only one that goes away sometimes. Thanks everyone for the fast responses I appreciate the help

 

Thanks For all the help and the diagram its going to be very useful, I just need to go buy a ohm reader now lol but its worth testing to see it there is a faulty wire harness it would be a lot more inexpensive to fix that than buying a new sensor. I am also going to clean the wheel speed sensors first see if that helps.

 

Is your speedometer working?

Cheers,

Don

 

Yes the speedometer is working

 

I've changed the left wheel speed sensor with a new one and still no luck , maybe it might be the wire??

 

Yes, it's quite possible it's the wiring harness between the sensor and the ABS module. The most likely place is the free-floating section between the sensor and the point where the wiring harness is secured to the underbody. Try flexing that section while you watch the ohmmeter reading (with the ohmmeter connected to the appropriate pins of the ABS module connector). If you see the meter jump to infinite resistance or "overload," you've found the break.

A wheel speed sensor issue can trigger Restricted Performance, so I assume it can also trigger the CEL.

RJ, it's the right rear sensor (U.K. driver's side) that provides the speedometer input. I recently had to repair the right rear wiring harness on a '99 X100, and the symptoms were: speedometer inoperative, Restricted Performance, ABS Fault and Traction Control Fault. I can't remember if the CEL was also illuminated but it probably was due to Restricted Performance having been triggered.

I stripped the insulation from the harness, inspected the wires, cut them both at the spot where one was broken, slipped a short length of heat shrink tubing onto each wire and a larger diameter heat shring tube over the outer insulation. I twisted the two ends of each wire together and soldered them, slipped the heat shrink over each solder joint and shrunk them with a heat gun, then slipped the larger piece of heat shrink down over the repaired section and sealed it up with the heat gun.

Cheers,

Don

 

OK I checked the resistance of the left wheel speed sensor and it was at 1160 ohms, I moved the sensors wire harness around and no change in the reading I also examined the wires and found no breakage. I also checked the rest of the wheel speed sensors and they all measured the same resistance. I dont know what else to do I still have a check engine light on , ABS, and a stability control fail. Also BTW the check the cruise control is not working as well I dont know if that is connected to these problems. I uploaded a pic of the sensor I replaced It looks in decent condition , also I cleaned the rest of them they all seemed pretty clean compared to other ones I have seen online.

 

I just 'scrapped' a JLM20555 ABS module on a 1999 XJ8 customer car because C1145 would NOT clear. I substituted a 'known-good' module and the DTC did NOT occur.

I plugged the module into MY personal 1999 XL8L and the DTC was present and would NOT clear. My 1999 sedan does not have any issues with speed sensors or link harnesses.

I tossed the ABS module into the scrap heap. Sometimes the modules themselves are the problem, not the vehicle.

bob

 

+1. had to scrap a module on my 97.

 

Eddie,

Bob's and RJ's experiences notwithstanding, before you scrap your ABS module it would be worth having a look inside for cold, starved or cracked solder joints. I recently opened a module that had been "refurbished" by a well-known firm, and discovered they had only reflowed the solder on the two large pins for the pump power connector. Yet there were several other solder joints that were obviously not in good condition, including some on the pins for the main connector through which all the wheel speed sensor signals pass. It would at least be worth a try to reflow the solder on every suspect joint on the circuit board of your module just to rule out a bad joint as the cause of your problem.

At the link below Gus shows how to remove the ABS module:

Jaguar X100 X308 ABS Module Removal

And this link shows the module circuit board on the last couple of pages:

ABS Module Repair

Cheers,

Don

 

If I did not have a pile of used modules to pick through I would probably look harder at trying to figure out why the wheel speed fault was permanent in the faulty module. Maybe I'll dig out a few and look closer at other solder joints????

Too many projects, not enough time.

bob