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ABS/TC/HDC Lights


ChrisW

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Since buying the FL the ABS light has been permanently on, need to get it sorted for MOT so started investigating today.

Checked all fuses and connectors plus the warning bulbs for the TC and HDC, found a dodgy fuse and now have all 3 lights on and will not go out.

There was another ABS module in the boot when I bought it so plugged this in and no banana

Checked the resistance on all 4 wheel sensors and they are around 950Ohms and fluctuate when the hub is rotated so they look OK. Tried to remove the sensors from the hubs but they are seized in there.

Removed the HDC switch as it had been suggested that the wires can rub and short out and found the 2 wires were ripped from their connector so fixed that as well.

Next on the list is to remove the drive shafts and check the toothed ring on each to make sure it is intact and clean off the ends of the sensors.

Had a look on the LR Rave CD and it lists a chart for diagnosing the warning lights but seems a little useless as almost every fault seems to result in the 3 lights illuminating :roll:

So besides checking the driveshafts does anyone have any other suggestions as to where to look :?:

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Since buying the FL the ABS light has been permanently on, need to get it sorted for MOT so started investigating today.

Checked all fuses and connectors plus the warning bulbs for the TC and HDC, found a dodgy fuse and now have all 3 lights on and will not go out.

There was another ABS module in the boot when I bought it so plugged this in and no banana

Checked the resistance on all 4 wheel sensors and they are around 950Ohms and fluctuate when the hub is rotated so they look OK. Tried to remove the sensors from the hubs but they are seized in there.

Removed the HDC switch as it had been suggested that the wires can rub and short out and found the 2 wires were ripped from their connector so fixed that as well.

Next on the list is to remove the drive shafts and check the toothed ring on each to make sure it is intact and clean off the ends of the sensors.

Had a look on the LR Rave CD and it lists a chart for diagnosing the warning lights but seems a little useless as almost every fault seems to result in the 3 lights illuminating :roll:

So besides checking the driveshafts does anyone have any other suggestions as to where to look :?:

Hi there,

Try the brake light switch. Had similar problem with HDC and TC light were coming on.This is situated above the brake pedal. Its about GBP28 from LR with new loom adapter. Mine stopped since the change.

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Search "three amigos" or read back down the forum, been covered many times. The lights won't go out until it's driven at ~7mph, worth remembering when tinkering.

Possibilities you can check:

- ABS wheel sensors (dirty, poor connection, dead)

- Reluctor rings on driveshafts

- Switch on gearstick (wires fall off)

- Brake light switch

- ABS ECU

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Search "three amigos" or read back down the forum, been covered many times. The lights won't go out until it's driven at ~7mph, worth remembering when tinkering.

Possibilities you can check:

- ABS wheel sensors (dirty, poor connection, dead)

- Reluctor rings on driveshafts

- Switch on gearstick (wires fall off)

- Brake light switch

- ABS ECU

Have read through most of the posts on this and other forums regarding the "Three Amigos" and carried out all of the tests and checks they suggested.

Looks like the problem has been found, took it in to MDP Landrover in Raglan and their diagnostic kit picked up the O/S/F ABS sensor not working however this had tested OK with a multimeter at the plug on the inner wing. I now have the pinouts for the ABS module under the seat and tested for continuity between the sensor and ABS plug and there is a break in the wiring loom somewhere :D

So the good news is I don't need to buy anything just need to find the break in the wiring loom :D:D

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