coolant temp and crank sensor wiring colors . ?

[turbo1600]

hi, managed to completely pull out and break the wires goin to the coolant and crank angle sensors on my 1998 outback 2.5 dohc........

i`ve looked around and i could only find referance to a orange and blue wire and white an blue wire etc...

but non of these colors match my wiring,.

the coolant wire colors are black and black with a yellow ? ( or white ) stripe , these wires still have the terminals on them, but have pulled out the plug.

and the crank angle wire colors are black and white . ( i`ve done a repair on these wires.)

does anybody know which colored wires go where on both of the plugs ?

thanks,...

 

[Rally]

Are you sure the coolant sensor only has 2 wires going to it? The crank angle wires go to the ECU.

 

[turbo1600]

hi, yes if definately has only 2 wires goin to it. i know that some may possibly have 3 .

i know the crank angle wires go to the ecu.
BUT i need to know where the colored wires go into each plug .

 

[Rally]

I don't think it matters if there are only 2 wires for the crank angle sensor. I believe, but not 100% certain, they can go either way

 

[Kevin]

Welcome aboard t1600.

Unfortunately can't help with positioning of the wires within the plug from my old Haynes manual (but I did confirm the number of wires and colour).

 

[Kevin]

Thinking more about this, the Coolant temp sensor is a thermistor (temp sensitive resistor) so I believe the current can flow in either direction. Resistors do not have polarity so shouldn't matter which way the wires are connected.

 

[duncanm]

Turbo,

doesn't sound right. Coolant is grounded to the block and one-wire in.

Hard to see - but that second picture, the dirty white/clear plug looks like coolant to me, and matches with the single spade connector sticking out.

Easiest way to be sure, if you have a wiring diagram, is to trace back to the first plug, or the SMJ.

 

[duncanm]

Ah ok - there are two sensors.

Single wire for the gauge, 3-wire for the ECU (the brown socket)

The wiring diagram I have (which is 1998+ AUDM BE/BH. But you say 1998 DOHC, which makes me suspect you've got a late BG), says plug E8 is triangular, light grey.

Pins 1-2-3 clockwise from top left. Point of triangle down.
1 - BY
2 - WG
3 - BR

Crank sensor is Yellow (pin 1) and Orange.
Cam sensor is Black (pin 1) and White -- sure you're not confusing the two?

Dunno if any of that helps..

 

[turbo1600]

Turbo,

doesn't sound right. Coolant is grounded to the block and one-wire in.

Hard to see - but that second picture, the dirty white/clear plug looks like coolant to me, and matches with the single spade connector sticking out.

Easiest way to be sure, if you have a wiring diagram, is to trace back to the first plug, or the SMJ.

right , the sensor for the temperature gauge is a SINGLE wire sensor.this sends signal to the gauge ONLY.

the coolant sensor is for the ecu and is a two wire one. and this only sends temp info to the ecu only.

 

[Kevin]

Just to distinguish between the two, I believe the one for the temp gauge is called a "sender" and the one for the ECU is called a "sensor".

 

[turbo1600]

Ah ok - there are two sensors.

Single wire for the gauge, 3-wire for the ECU (the brown socket)

The wiring diagram I have (which is 1998+ AUDM BE/BH. But you say 1998 DOHC, which makes me suspect you've got a late BG), says plug E8 is triangular, light grey.

Pins 1-2-3 clockwise from top left. Point of triangle down.
1 - BY
2 - WG
3 - BR

Crank sensor is Yellow (pin 1) and Orange.
Cam sensor is Black (pin 1) and White -- sure you're not confusing the two?

Dunno if any of that helps..

hi, as stated before its a TWO wire coolant sensor .: see here : https://www.ebay.com.au/itm/Coolant...343040?hash=item4657c69600:g:uhUAAOSwx2dYEdos

 

[duncanm]

which is why I said 'dunno if this helps'.

Do you have a late-model BG?

either way - find yourself a wiring diagram, or try googling. Lots of images of coolant sensors.

As noted above, its most likely just a thermistor and doesn't care which way its wired.