Coolant Level Sensor routing/Instrument Cluster
#1
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Coolant Level Sensor routing/Instrument Cluster
The coolant level warning buzzer is ON even though I've thoroughly aired out ("burped") the coolant system. I grounded the wire for the CLS sensor and it didn't stop the buzzer.
I seriously doubt it's the sensor or a break in the wiring harness as it's the same exact set-up (except a new motor) I used from last year.
Anyhow, I did replace the instrument gauge cluster faces with an aftermarket one. The routing for the power and control signals for the new gauge faces required some modification to the cluster bezel since I didn't want to lose any bulbs (it helps to illuminate the gauge needles). Anyhow, when I tried to cut away at the thin PCB film to match the enlarged holes on the bezel, I cut into some traces by accident. I took the cluster and thin film PCB to work and re-soldered the traces. It checked out on continuity test and the solder connection is strong and good.
So, looking from the FSM, it looks like the CLS is an input to the CPU, but the "CPU" is in the instrument cluster box. So, does the cluster have any active logic that would interpret the CLS input and sound the buzzer? Or does it right to the ECU and then the ECU outputs the LED warning to the cluster?
btw, does the oil pressure signal go directly to the gauge cluster (it looks like in the FSM)?
I suspect there could be a chance that during the install of the gauge cluster, I could've damaged the solder connection.
J
I seriously doubt it's the sensor or a break in the wiring harness as it's the same exact set-up (except a new motor) I used from last year.
Anyhow, I did replace the instrument gauge cluster faces with an aftermarket one. The routing for the power and control signals for the new gauge faces required some modification to the cluster bezel since I didn't want to lose any bulbs (it helps to illuminate the gauge needles). Anyhow, when I tried to cut away at the thin PCB film to match the enlarged holes on the bezel, I cut into some traces by accident. I took the cluster and thin film PCB to work and re-soldered the traces. It checked out on continuity test and the solder connection is strong and good.
So, looking from the FSM, it looks like the CLS is an input to the CPU, but the "CPU" is in the instrument cluster box. So, does the cluster have any active logic that would interpret the CLS input and sound the buzzer? Or does it right to the ECU and then the ECU outputs the LED warning to the cluster?
btw, does the oil pressure signal go directly to the gauge cluster (it looks like in the FSM)?
I suspect there could be a chance that during the install of the gauge cluster, I could've damaged the solder connection.
J
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c00l, I saw your previous post on the battery harness. I'll look into it, but I'm pretty sure it's hooked up since the other sensors off the part of the harness are working (water temp sensor and water temp meter - for fans). My battery harness is slightly different since it's in the back compartment behind the driver seat.
J
J
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The water temp comes from the main harness and goes down next to the oil press. unit. As far as i know everything can work without that plugged in. There will be a little black connect that will have a black wire with a red stripe, that will be by the oil filler neck and PS. good luk
#7
Funny you mention that - I spent most of tonight trying to diagram the instrument cluster film PCB so I can figure out how to run the speedo by itself... it's becoming quite a challenge.
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