1 HES... three sets of conflicting information Sun Sep 19, 2021 11:27 am
Dai
Life time member
The K100 wiring diagram, Bert's troubleshooting guide and the HES manufacturer all have apparently contradictory information on them.
The HES guide http://www.hallsensors.de/CYHME56C.pdf shows red as +12 volts, black as ground and green as output. This is in agreement with the OEM 2AV54 HES datasheet https://datasheet.octopart.com/2AV54-Honeywell-datasheet-92379.pdf
The two HES sensors I have in front of me which were taken off a defunct unit are wired as follows:
- both red wires from the sensors go to black in the K100 loom
- both black wires from the sensors go to orange in the K100 loom
- green from the lower sensor goes to red in the K100 loom
- green from the upper sensor goes to brown in the K100 loom
If that isn't confusing enough,
- Bert's diagram shows signal outputs on pins 2 and 5, power on pin 3 and ground on pin 4 (viewing the socket from the input, non-wire side, I assume)
- The actual loom on the bike has power on pin 5 (red), ground on pin 3 (black) leaving signal outputs on 2 (brown) and 4 (orange), (viewed in the same direction as the plug on the HES lead i.e. from the wire side of the plug on the loom and with the pins numbered in the same direction as Bert's)
So... all this means that on the HES,
- both red wires (positive) from the sensors go to black in the K100 loom which is ground
- both black wires from the sensors (ground) go to orange in the K100 loom which is a signal wire
- green (output) from the lower sensor goes to red in the K100 loom which is +12 volts
- green (output) from the upper sensor goes to brown in the K100 loom which is (finally) output to signal
That... doesn't make a huge amount of sense. The only conclusion that I can draw is that I do not understand the status/usage of the wires as they emerge from the ICU and head off down to the HES and that the colours are not exactly ...erm... standard in their use.
Charlie? Rob? Can you throw some light on this mess please?
The HES guide http://www.hallsensors.de/CYHME56C.pdf shows red as +12 volts, black as ground and green as output. This is in agreement with the OEM 2AV54 HES datasheet https://datasheet.octopart.com/2AV54-Honeywell-datasheet-92379.pdf
The two HES sensors I have in front of me which were taken off a defunct unit are wired as follows:
- both red wires from the sensors go to black in the K100 loom
- both black wires from the sensors go to orange in the K100 loom
- green from the lower sensor goes to red in the K100 loom
- green from the upper sensor goes to brown in the K100 loom
If that isn't confusing enough,
- Bert's diagram shows signal outputs on pins 2 and 5, power on pin 3 and ground on pin 4 (viewing the socket from the input, non-wire side, I assume)
- The actual loom on the bike has power on pin 5 (red), ground on pin 3 (black) leaving signal outputs on 2 (brown) and 4 (orange), (viewed in the same direction as the plug on the HES lead i.e. from the wire side of the plug on the loom and with the pins numbered in the same direction as Bert's)
So... all this means that on the HES,
- both red wires (positive) from the sensors go to black in the K100 loom which is ground
- both black wires from the sensors (ground) go to orange in the K100 loom which is a signal wire
- green (output) from the lower sensor goes to red in the K100 loom which is +12 volts
- green (output) from the upper sensor goes to brown in the K100 loom which is (finally) output to signal
That... doesn't make a huge amount of sense. The only conclusion that I can draw is that I do not understand the status/usage of the wires as they emerge from the ICU and head off down to the HES and that the colours are not exactly ...erm... standard in their use.
Charlie? Rob? Can you throw some light on this mess please?
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1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
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