[xj-s] Re: ABS Light problem

Peter, thanks again for your responce.I did as you suggested and got the
following codes - (22) (34). I also found a disconected Fuel overflow hose
(which probably explains some of the Petrol smell)so far its been a
worthwhile excercise!

Your suggestions would be appreciated.

                                  Regards Gerry.

OK. According to the factory manual, Code 22 is “Inlet valve front left”,
and code 34 is Sensor, rear left.
Try cleaning the sensor and its connections. If no luck there, it MAY be
possible to swap left & right (they have different part numbers, so maybe
not), to see if the problem changes sides.

Also: “Test 7 - Left Hand side rear wheel sensor resistance check-
Connect ohmmeter between terminals 24 and 6, Ignition off
Resistance should be 0.8 - 1.4K ohms
If incorrect, check wheel sensor connecor, Disconnect wheel sensor and
check resistance,
if incorrect, replace sensor.
If resistance of sensor correct, check wiring from sensor to ABS block
connector terminals 6 and 24.”

“Test 11- Left hand side rear sensor voltage.
Raise car on wheel free ramp
Spin wheel at 1 rev per second
AC Voltmeter connected to terminals 24 and 6 ABS module
Ignition OFF
Should be more than 0.04 - 0.1 volts
If incorrect check sensor mounting, check toothed wheel, check hub
carrier”

(I don’t write 'em, I just relay 'em)

As far as the inlet valve goes, in the inimitable style of the Jaguar
manual & its complete lack of editing, there are two tests that supposedly
check the right front inlet valve, and none that check the left, although
there is one each for the right and left outlet valve. Obviously you will
have to check both. Since there appears to be no way to repair in internal
problem, the solution to any valve problem is described as “replace valve
block”. If that is the case, I would guess you have nothing to lose by
digging into the valve block to see if you can fix it.

“Test 21 - Check resistance of RH front inlet valve (RHD) (I think this is
really the left side)
Ohm meter connected to ABS module connector terminals 15 and 11
Ignition OFF
Should be 3 - 5 ohms
If incorrect, disconnect valve block and measure resistance between pins 1
and 7
Check module wiring from ABD module terminal 15 to pin 6 of valve block”

“Test 23 - Check resistance of RH front inlet valve (RHD)
Ohm meter connected to ABS module connector terminals 35 and 11
Ignition OFF
Should be 3 - 5 ohms
If incorrect, disconnect valve block and measure resistance between pins 1
and 7
Check module wiring from ABD module terminal 35 to pin 6 of valve block”

“Test 27 - Inlet and Outlet valve function (applies to RHD)
Bridge ABS module terminals 2, 16 and 35
Ignition OFF - Apply foot brake
LH front wheel should now be locked
Switch ignition ON - Road wheel must now rotate - Brake pedal must not go
to the floor
If an incorrect result is obtained renew valve block
Check electric / hydraulic interconnection”

“Test 28 - Inlet and Outlet valve function (applies to RHD)
Bridge ABS module terminals 2, 15 and 34
Ignition OFF - Apply foot brake
RH front wheel should now be locked
Switch ignition ON - Road wheel must now rotate - Brake pedal must not go
to the floor
If an incorrect result is obtained renew valve block
Check electric / hydraulic interconnection”

Good luck

cc:To: Peter Cohen/GCS/US/Unisys
From: gerryh@netspace.net.au (gerry halpern)
Date: 02/25/98 09:38:19 AM GMT
Subject: ABS Light problem