Thread: 1999 D2 V8 manual warning lights on dash after sitting for some time.

Search the forum for "The Three Amigos"

Maybe ask nicely here--
https://www.aulro.com/afvb/the-wa-aulroians-group/

Thanks for the 3 Amigos comment.
On key start system does a check that flashes instrument panel indicator / led.
Mine abs indicator stays on but down hill and traction control leds flash on to do the bulb check but come back on because slabs ecu holds those inputs to ground because there is a fault.
There must be and under lying abs fault but the ecu is operating correctly / sending data PWM signals to Instrument panel to do the bulb check.
So this means that is powered and operating.
Need more thought.

Originally Posted by Pedro_The_Swift

Maybe ask nicely here--
https://www.aulro.com/afvb/the-wa-aulroians-group/

I meant about borrowing a nanocom,,

also The Good Oil forum has enough info on our 3 friends too fill a large book

Originally Posted by banjupb

Thanks for the 3 Amigos comment.
On key start system does a check that flashes instrument panel indicator / led.
Mine abs indicator stays on but down hill and traction control leds flash on to do the bulb check but come back on because slabs ecu holds those inputs to ground because there is a fault.
There must be and under lying abs fault but the ecu is operating correctly / sending data PWM signals to Instrument panel to do the bulb check.
So this means that is powered and operating.
Need more thought.

If the ABS light is on alone for a short time then the other two are joining it the fault code should be sensor related, you need the fault code read to know which out of 4)... about the bolded part, it's a bit the other way around... the warning lamp's self check is managed by the instrument pack's hardware, the ECU comes into play after that and if no fault is present will keep the lights off with analogue voltage on the earth path(not PWM) or if a fault is current that feed is missing and the warnings are kept on by the instrument pack... it's normal to be so cos if let's say the ECU fails or the ECU's feed is missing due to a blown fuse or wiring issue the warnings should be on if you see what i mean.

So the fault and un power condition of the slabs, down hill and traction control pins are ground / earth return this would then tell the display to illuminate.
Sounds like better go looking for 12Vdc at the slabs ecu and also look for a change of voltage on the other pins as it cycles through the start up process.
After that looks like a diag tool is needed.
Thanks for the heads up

Originally Posted by banjupb

So the fault and un power condition of the slabs, down hill and traction control pins are ground / earth return this would then tell the display to illuminate.

After that looks like a diag tool is needed.
Thanks for the heads up

the SLABS delivers voltage on that path for the warning lamps to extinguish, if voltage is missing on that path the instrument pack will bring up the lights, for example if you unplug the SLABS there will be no input on those wires but the warning lamps will be on

The traction control warning lamp within the instrument pack utilises a red LED and a clear legend. The traction control
warning lamp informs the driver that the traction control system is enabled. The switch is hard wired to the SLABS
ECU. The SLABS ECU controls the warning lamp on or off via a high or low voltage signal to the instrument pack.
When the ignition is switched on, the SLABS ECU illuminates the LED to provide a self-check, providing there is no
fault it will remain illuminated for 3 seconds or until the ignition is switched off.
The power input for the LED is supplied by the instrument pack via fuse 27. The SLABS ECU provides the earth path
to illuminate the warning lamp.
The voltage on the SLABS ECU earth path to the instrument pack is as follows:
l < 1.8 volts = warning lamp on.
l > 7.7 volts = warning lamp off.

SLABS ECU internal failure
ABSisabled.
ETC: Disabled.
EBD: Disabled.
HDC: Disabled.
Supply voltage out of limits
ABS: Disabled.
ETC: Disabled.
EBD: Disabled.
HDC: Disabled