E48 ecu not picking up crank sensor reading.
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- Posts: 4
- Joined: Mon May 01, 2023 4:30 am
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E48 ecu not picking up crank sensor reading.
Got an E48 ecu ,if I run a test on spark and injectors ,all works..but it won't recognise crank sensor,tested sensor all working ,I'm using oem crank sensor ,it's all on a vauxhall x20xev motor running original parts ie injection,coilpack,and all the sensors, am baffled now,any help epuld be much appreciated.
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- Posts: 3588
- Joined: Tue Aug 02, 2011 12:08 pm
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- Location: Norn Iron
Re: E48 ecu not picking up crank sensor reading.
has it ever ran ?
Has the ecu been set up correctly for your application ?
Has the ecu been set up correctly for your application ?
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- Posts: 4
- Joined: Mon May 01, 2023 4:30 am
- ECU Model: No ECU
Re: E48 ecu not picking up crank sensor reading.
Engine was a runner on original wiring and ecu ,bit I've removed all of vehicle loom,and engine loom,to replace with dta and a smaller loom on the car ,ecu was set up for a vauxhall 16v motor .
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Re: E48 ecu not picking up crank sensor reading.
When you're cranking, what does diagnostic display show ?
do a screen record, or video of it or something
And not all motors are the same, has the crank trigger setup etc been correctly configured/wired for your engine ?
do a screen record, or video of it or something
And not all motors are the same, has the crank trigger setup etc been correctly configured/wired for your engine ?
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- Posts: 4
- Joined: Mon May 01, 2023 4:30 am
- ECU Model: No ECU
Re: E48 ecu not picking up crank sensor reading.
Seems like it's an crank sensor fault, I've had a new one ,so will try it ,diagnostic display isn't showing any cranking action at all,I've a feeling also along with sensor issue,the wiring diagram is wrong for my sensor ,as mine needs a positive feed to work it ,there's no feed on diagram, only a shield and return to ecu .
Re: E48 ecu not picking up crank sensor reading.
Sounds like the 'new' crank sensor is a Hall device which does need a voltage supply to work. I'd take an additional supply from the DTA fused supply to the crank sensor. These give a very distinctive output signal - a square wave - different to the inductive sensors that are widely used.
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- Posts: 38
- Joined: Sat Jul 30, 2011 4:35 pm
- ECU Model: S100 Pro
- Distributor: JON-TEC-RALLYE
- Firmware Version: 89
- Location: Canary-Island
Re: E48 ecu not picking up crank sensor reading.
dta e48, only accepts 2 or 3 wire VR sensors, nothing hall or optical.
You have to change the sensor.
If it is powered, it should not work for this old ecu
You have to change the sensor.
If it is powered, it should not work for this old ecu
DTA--MoTec--Link--Ecumaster--HONDATA
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- Posts: 4
- Joined: Mon May 01, 2023 4:30 am
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Re: E48 ecu not picking up crank sensor reading.
Hi mine is a 3 wire sensor ,original equipment for the vauxhall x20xev motor in an astra gsi 1998,out of interest what type of sensor would be in these ?JON-TEC-RALLYE wrote: ↑Thu May 18, 2023 7:16 am dta e48, only accepts 2 or 3 wire VR sensors, nothing hall or optical.
You have to change the sensor.
If it is powered, it should not work for this old ecu
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- Posts: 3588
- Joined: Tue Aug 02, 2011 12:08 pm
- ECU Model: No ECU
- Location: Norn Iron
Re: E48 ecu not picking up crank sensor reading.
Scope it and see.
Some may have 3 terminals, one is just carrying on the shield. Although more often 3 wires will be hall.
Only way to be sure is to test it
Some may have 3 terminals, one is just carrying on the shield. Although more often 3 wires will be hall.
Only way to be sure is to test it
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- Posts: 38
- Joined: Sat Jul 30, 2011 4:35 pm
- ECU Model: S100 Pro
- Distributor: JON-TEC-RALLYE
- Firmware Version: 89
- Location: Canary-Island
Re: E48 ecu not picking up crank sensor reading.
Crank sensor connections
Use twisted pair wire with overall
screen for crank sensor
VR sensor pin outs (magnetic)
Pin 1 to pin 18
Pin 2 to pin 20
Shield to pin 20 at ECU
Vauxhall/Opel/BMW/Volvo/Saab/e
tc. (Bosch & Siemens)
Pin 1 to pin 18
Pin 2 to pin 20
Pin 3 to shield to pin 20 at ECU
Marelli
Ford
Pin 2 to pin 18
Pin 1 to pin 20
Shield to pin 20 at ECU
Use twisted pair wire with overall
screen for crank sensor
VR sensor pin outs (magnetic)
Pin 1 to pin 18
Pin 2 to pin 20
Shield to pin 20 at ECU
Vauxhall/Opel/BMW/Volvo/Saab/e
tc. (Bosch & Siemens)
Pin 1 to pin 18
Pin 2 to pin 20
Pin 3 to shield to pin 20 at ECU
Marelli
Ford
Pin 2 to pin 18
Pin 1 to pin 20
Shield to pin 20 at ECU
DTA--MoTec--Link--Ecumaster--HONDATA