The Mitsubishi Pajero Owners Club®

SteveMilner · Posted: Mon Oct 22, 2018 9:23 Post subject: Trio of Yellow Lights

On my Mk IV

I've got ABS, Anti skid and ASC lights all come one on. It happened under light braking

I'm thinking wheel speed sensor. What resistance should these devices show. I'll put a multimeter across them to see.

Regards,
Stephen

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assassin · Posted: Tue Oct 23, 2018 3:17 Post subject:

Check the stator rings first as they clog up with muck over time and prevent the sensor from working correctly, these are the toothed ring under the sensor.
These work by variable inductance and as the peak of the stator ring passes it a power pulse is generated, as the trough passes it there is no pulse and this identifies both the wheel speed and any sudden slipping or locking.

Check the connector plug, remove the connection and ensure it isn't corroded as any corrosion increases the resistance and this resistance affects the readings obtained from the sensor.

SteveMilner · Posted: Mon Oct 29, 2018 16:52 Post subject:

Turns out both brake bulbs had failed.

Fixing that fixed the yellow lights!

Who knew?

SteveMilner · Posted: Thu Mar 21, 2019 15:51 Post subject:

All three have lit up again, but this time the brake lights are fine.

It will be a trip to the garage to get the codes read to see if this points to something else trivial.

The all lit up together as I went over a bump in the road, coming off a roundabout.

SteveMilner · Posted: Sun Mar 24, 2019 14:44 Post subject:

I’ve used an OBD II reader, which shows no fault codes. I’m guessing that’s because the fault is located outside of the main ECU. It can read main ECU and TCM.

The lights have been intermittent for a while but now on permanently. No obvious other symptoms from the car.

Any ideas until I can get the time to get to the garage?

bigalan · Posted: Sun Mar 24, 2019 18:23 Post subject:

I had this, it was the steering angle sensor whatever that is.

My local Mistzy garage sorted it for me, cost just over £100 if I remember correct.

SteveMilner · Posted: Mon Mar 25, 2019 13:27 Post subject:

Turns out, in this instance, it was the RHS Front Wheel Speed Sensor O/S