What's the resistance in the Crankshaft Position Sensor Connector of Your Volvo 850

[XavierEduardo99]

It sounds like you are trying to measure the resistance in the wiring harness and verify the harness itself is OK. One way to do that is to measure each wire one at a time in the harness from the pins inside the CPS sensor connector back to the ECU to make sure each wire individually is low resistance. I would expect to see something in the range of 1 to 10 Ohms for each wire.

Indeed, that’s what I’m trying to find out Initially I placed the multimeter probes into the wiring-harness terminals and got a reading of 14 kΩ. From what you’re saying, it sounds like the process is a bit more involved than that. I’ll need to remove the ECU, identify the actual CPS pins (Probably by checking continuity) and then measure the wiring resistance properly.

Much obliged.

[Olegs855R]

It sounds like you are trying to measure the resistance in the wiring harness and verify the harness itself is OK. One way to do that is to measure each wire one at a time in the harness from the pins inside the CPS sensor connector back to the ECU to make sure each wire individually is low resistance. I would expect to see something in the range of 1 to 10 Ohms for each wire.

Great, now I don’t need to say that stuff! Thanks

[misha]

It sounds like you are trying to measure the resistance in the wiring harness and verify the harness itself is OK. One way to do that is to measure each wire one at a time in the harness from the pins inside the CPS sensor connector back to the ECU to make sure each wire individually is low resistance. I would expect to see something in the range of 1 to 10 Ohms for each wire.

At this point i would just verify that wiring for tdc sensor(rpm sensor) have continuity.
If the wiring is ok....then the sensor must be bad...or dirty.
If the sensor's resistance is within range,then it must be dirty or tip is damaged.
Remove it and inspect it for accumulated dirt.
It can be cleaned with brake cleaner.

[XavierEduardo99]

It sounds like you are trying to measure the resistance in the wiring harness and verify the harness itself is OK. One way to do that is to measure each wire one at a time in the harness from the pins inside the CPS sensor connector back to the ECU to make sure each wire individually is low resistance. I would expect to see something in the range of 1 to 10 Ohms for each wire.

At this point i would just verify that wiring for tdc sensor(rpm sensor) have continuity.
If the wiring is ok....then the sensor must be bad...or dirty.
If the sensor's resistance is within range,then it must be dirty or tip is damaged.
Remove it and inspect it for accumulated dirt.
It can be cleaned with brake cleaner.

I'll do this. Thank you very, very much!