Which ABS sensors suit?

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psproule

New Member
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3
Location
Australia
Hi Folks, Australian delivered 2001 TD4. VIN 71A3317XX. I've been trying to sort the 3 Amigos for over a year now. I'll preface this by saying that I am very competent with electronics and electromechanics.....

So, I've changed the brake switches, fixed the HDC switch wires, changed all 4 wheel speed sensors for new ones, checked the hubs, checked the reluctor wheels, checked all wiring, checked all fuses & relays, checked the G sensor and measured all signals to the ABS modulator. All present and accounted for although the two rear wheel sensors read 1200 ohms - slightly high when the manual says 900~1100). Can still happily pick up a signal on the multimeter (AC volts and frequency) when the wheel is spun though.

Then I pulled the ECU off the pump to check for dry joints and shorted/ open circuit solenoid coils. All appears fine. But the 3 amigos remain steadfastly on.

So I'm leaning towards a faulty ABS pump. I can get another locally for $330 with warranty but wanted to check on something first..... This one has the SRB000110 pump - not the older Wabco one that gets the shuttle valve fault. The RAVE manual notes that from 2002 a different "active" wheel speed sensor was used. But I'm wondering if the active sensors are supposed to go with this SRB000110 pump? Or did the SRB use both the old and new sensors? See, the fault was intermittent before I changed the sensors - now it's permanent which still makes me suspect the sensors even though they seem to measure OK.

It would help if there was a LR dealer nearby that I could access a Testbook to look at codes.

Any clues / suggestions?

Thanks - Pat
 
dont you need a dc volt meter with a car not ac

Output of the passive wheel speed sensors is a sine wave, or AC Volts. Only in the order of 150 to 200mv or so.

I have just answered my own question though - the FL 1 had 3 ABS pumps;

1998 - 2001 Wabco D
2000 - 2001 TEVES MK 20
2002 - 2006 TEVES MK 25.

The last one uses the active wheel speed sensors, and apparently they bolt in and the hubs no longer have the encoder wheel. The magnets are in the axle seal. Mine has the TEVES MK 20.

I think I'm about to buy a Hawkeye for diagnostics. Wont cost much more than a drive to a LR dealer + their charges.

THanks - Pat
 
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