1995 ES300 Cluster Bulb Replacements?
05-14-21, 03:03 PM
#16
Pit Crew
Thread Starter
I doubt you will really need an oscilloscope for it, since you just need to make sure that the signal is actually getting to the ECU, and not what kind of signal is there, which is something you can always do later. As for the pinout, the pin for the speed input actually stayed in the same location all the way to the next generation ES300; I don't have any diagrams specifically for 1995 or 1996 ES300, so it would be tough to tell. In any case, all that's left are the cluster, ECU and wiring to check. If your speedometer works and resetting the CEL doesn't help, it may suggest that you need a new cluster, or that you need to check the connection from the cluster to the ECU.
Hope this helps and best of luck!
Hope this helps and best of luck!
EDIT:... correction... it was over a 600 mi (1200 round) trip. i just checked the map...
Last edited by jerlands; 05-14-21 at 03:14 PM.
05-14-21, 06:50 PM
#17
Pit Crew
Thread Starter
I doubt you will really need an oscilloscope for it, since you just need to make sure that the signal is actually getting to the ECU, and not what kind of signal is there, which is something you can always do later. As for the pinout, the pin for the speed input actually stayed in the same location all the way to the next generation ES300; I don't have any diagrams specifically for 1995 or 1996 ES300, so it would be tough to tell. In any case, all that's left are the cluster, ECU and wiring to check. If your speedometer works and resetting the CEL doesn't help, it may suggest that you need a new cluster, or that you need to check the connection from the cluster to the ECU.
Hope this helps and best of luck!
Hope this helps and best of luck!
05-16-21, 03:01 PM
#18
Pole Position
Well, right now it's nothing but guessing, which won't get you all that far. You will either need to find a specialist with necessary equipment, or the same car that you can take parts off of. Check that you have signal going to the ECU, although quite unlikely, but you may still check if there are any issues with the connection from the Cluster to the ECU. If the connection is good and the speedometer is operating, then it is more than likely that you need a new cluster.
Hope this helps and best of luck!
Hope this helps and best of luck!
05-16-21, 11:21 PM
#19
Pit Crew
Thread Starter
Well, right now it's nothing but guessing, which won't get you all that far. You will either need to find a specialist with necessary equipment, or the same car that you can take parts off of. Check that you have signal going to the ECU, although quite unlikely, but you may still check if there are any issues with the connection from the Cluster to the ECU. If the connection is good and the speedometer is operating, then it is more than likely that you need a new cluster.
Hope this helps and best of luck!
Hope this helps and best of luck!
05-17-21, 01:05 AM
#20
Pole Position
You are not the first person to experience such an issue, those cars are known for it. With such mileage, especially if it was taken off of junkyard, chances are it may have gotten the same flaw. Someone may have gotten the P0500 code, they tried fighting with it for a while, and when nothing helped, the car ended up at the junkyard, right in time for someone else with that same code to take that cluster out; all that is to tell that junkyard parts are not always to be relied upon. Throwing parts on problems is also not the best alternative, since it may still be wiring or ECU related, the only way to know for sure is to check the signal to ECU.
As for Direct Clutch speed sensor, it is a different circuit responsible for shift timing rather than car speed, so I doubt it has any relation to your code; that said, if you are not sure of its origins, then yes you should replace it. Dorman is not the best choice, especially when it comes to sensors, even used OEM off of eBay would be a better alternative, since they are pretty robust. Do you remember which brand was installed in your car? There were two, Toyota and Aisin, they are a touch different from each other, and I am not sure if they are compatible.
Hope this helps and best of luck!
As for Direct Clutch speed sensor, it is a different circuit responsible for shift timing rather than car speed, so I doubt it has any relation to your code; that said, if you are not sure of its origins, then yes you should replace it. Dorman is not the best choice, especially when it comes to sensors, even used OEM off of eBay would be a better alternative, since they are pretty robust. Do you remember which brand was installed in your car? There were two, Toyota and Aisin, they are a touch different from each other, and I am not sure if they are compatible.
Hope this helps and best of luck!
05-17-21, 01:10 PM
#21
Pit Crew
Thread Starter
You are not the first person to experience such an issue, those cars are known for it. With such mileage, especially if it was taken off of junkyard, chances are it may have gotten the same flaw. Someone may have gotten the P0500 code, they tried fighting with it for a while, and when nothing helped, the car ended up at the junkyard, right in time for someone else with that same code to take that cluster out; all that is to tell that junkyard parts are not always to be relied upon. Throwing parts on problems is also not the best alternative, since it may still be wiring or ECU related, the only way to know for sure is to check the signal to ECU.
As for Direct Clutch speed sensor, it is a different circuit responsible for shift timing rather than car speed, so I doubt it has any relation to your code; that said, if you are not sure of its origins, then yes you should replace it. Dorman is not the best choice, especially when it comes to sensors, even used OEM off of eBay would be a better alternative, since they are pretty robust. Do you remember which brand was installed in your car? There were two, Toyota and Aisin, they are a touch different from each other, and I am not sure if they are compatible.
Hope this helps and best of luck!
As for Direct Clutch speed sensor, it is a different circuit responsible for shift timing rather than car speed, so I doubt it has any relation to your code; that said, if you are not sure of its origins, then yes you should replace it. Dorman is not the best choice, especially when it comes to sensors, even used OEM off of eBay would be a better alternative, since they are pretty robust. Do you remember which brand was installed in your car? There were two, Toyota and Aisin, they are a touch different from each other, and I am not sure if they are compatible.
Hope this helps and best of luck!
05-17-21, 10:02 PM
#22
Pole Position
In this case, Techstream or any other scan tool won't be of much service to you, since it will only tell you what is supplied to the ECU, which is either a very distorted signal, or a complete lack of thereof, which you already know, since you have a P0500 code. Any halfway descent OBD2 scan tool should be capable of reading engine live data, it should be stated in the spec sheet for the specific tool you chose as Live Data Stream. You don't need an oscilloscope to check the signal on the ECU, you can just lift one of the front wheels and turn it by hand. That said, if you really want to have some fun and ready to part with about $25, you may invest in something like a tool linked below. While it is not a real oscilloscope, it should be enough for your needs.
As for the Direct Clutch speed sensor, the Part Number you provided (89413-08020) is actually listed as a replacement for both Toyota and Aisin sensors, so it should work regardless of the sensor that was originally in your car. RockAuto is a really good place to get parts, they usually have a vast selection for pretty reasonable prices, the heart icon you can see next to some parts is not their choice, it is the best selling part in the specific category, which is sometimes useful, but not to be relied upon. At least in my opinion, if possible, you should probably ship that sensor back and get something else, even if it is a used OEM, Dorman sensors are not really worth $56.. That sensor detects the speed of the direct clutch, ECU then compares the speed of the clutch and the car to determine a correct shift timing, and make a smooth gear change.
Hope this helps and best of luck!
As for the Direct Clutch speed sensor, the Part Number you provided (89413-08020) is actually listed as a replacement for both Toyota and Aisin sensors, so it should work regardless of the sensor that was originally in your car. RockAuto is a really good place to get parts, they usually have a vast selection for pretty reasonable prices, the heart icon you can see next to some parts is not their choice, it is the best selling part in the specific category, which is sometimes useful, but not to be relied upon. At least in my opinion, if possible, you should probably ship that sensor back and get something else, even if it is a used OEM, Dorman sensors are not really worth $56.. That sensor detects the speed of the direct clutch, ECU then compares the speed of the clutch and the car to determine a correct shift timing, and make a smooth gear change.
Hope this helps and best of luck!
05-19-21, 07:26 PM
#23
Pit Crew
Thread Starter
In this case, Techstream or any other scan tool won't be of much service to you, since it will only tell you what is supplied to the ECU, which is either a very distorted signal, or a complete lack of thereof, which you already know, since you have a P0500 code. Any halfway descent OBD2 scan tool should be capable of reading engine live data, it should be stated in the spec sheet for the specific tool you chose as Live Data Stream. You don't need an oscilloscope to check the signal on the ECU, you can just lift one of the front wheels and turn it by hand. That said, if you really want to have some fun and ready to part with about $25, you may invest in something like a tool linked below. While it is not a real oscilloscope, it should be enough for your needs.
DSO138 Handheld Oscilloscope
As for the Direct Clutch speed sensor, the Part Number you provided (89413-08020) is actually listed as a replacement for both Toyota and Aisin sensors, so it should work regardless of the sensor that was originally in your car. RockAuto is a really good place to get parts, they usually have a vast selection for pretty reasonable prices, the heart icon you can see next to some parts is not their choice, it is the best selling part in the specific category, which is sometimes useful, but not to be relied upon. At least in my opinion, if possible, you should probably ship that sensor back and get something else, even if it is a used OEM, Dorman sensors are not really worth $56.. That sensor detects the speed of the direct clutch, ECU then compares the speed of the clutch and the car to determine a correct shift timing, and make a smooth gear change.
Hope this helps and best of luck!
DSO138 Handheld Oscilloscope
As for the Direct Clutch speed sensor, the Part Number you provided (89413-08020) is actually listed as a replacement for both Toyota and Aisin sensors, so it should work regardless of the sensor that was originally in your car. RockAuto is a really good place to get parts, they usually have a vast selection for pretty reasonable prices, the heart icon you can see next to some parts is not their choice, it is the best selling part in the specific category, which is sometimes useful, but not to be relied upon. At least in my opinion, if possible, you should probably ship that sensor back and get something else, even if it is a used OEM, Dorman sensors are not really worth $56.. That sensor detects the speed of the direct clutch, ECU then compares the speed of the clutch and the car to determine a correct shift timing, and make a smooth gear change.
Hope this helps and best of luck!
The oscilloscope i'm looking at is the LIUMY Oscilloscope Multimeter, LM2020
05-20-21, 03:35 AM
#24
Pole Position
For the ECU to trigger a fault code, ECU has what's called Trip Detection Logic, for the P0500 it is a 2 Trip Detection Logic, to put it simply, the condition that sets the specific code has to occur at least twice for the code to trigger a CEL on the dashboard. If the condition didn't occur enough times, the ECU will only set a Pending code, which doesn't light the CEL. All this is pure guessing though, and with no information on what is being sent to the ECU, you won't get all that far.
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
Last edited by Arsenii; 05-20-21 at 03:39 AM.
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mbart1314 (06-17-21)
05-20-21, 07:05 PM
#25
Pit Crew
Thread Starter
For the ECU to trigger a fault code, ECU has what's called Trip Detection Logic, for the P0500 it is a 2 Trip Detection Logic, to put it simply, the condition that sets the specific code has to occur at least twice for the code to trigger a CEL on the dashboard. If the condition didn't occur enough times, the ECU will only set a Pending code, which doesn't light the CEL. All this is pure guessing though, and with no information on what is being sent to the ECU, you won't get all that far.
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
05-20-21, 09:54 PM
#26
Pit Crew
Thread Starter
For the ECU to trigger a fault code, ECU has what's called Trip Detection Logic, for the P0500 it is a 2 Trip Detection Logic, to put it simply, the condition that sets the specific code has to occur at least twice for the code to trigger a CEL on the dashboard. If the condition didn't occur enough times, the ECU will only set a Pending code, which doesn't light the CEL. All this is pure guessing though, and with no information on what is being sent to the ECU, you won't get all that far.
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
As for the tool you picked, I am not a expert here; as I wrote before, even that $25 gig will do the job.
Hope this helps and best of luck!
06-06-22, 01:16 PM
#27
Hello,
Now I'm scared to use aftermarket bulbs. Is there any reference table to understand the correct replacement Bulb to replace instrument cluster bulbs? I mean, OEM are too expensive for a bulb and you may need 25 of them.
Can anyone share a cross reference table or past experiences?
I was aiming for the LED bulbs, but the problem is that they don't dim as normal bulbs. Any thoughts on this last?
Now I'm scared to use aftermarket bulbs. Is there any reference table to understand the correct replacement Bulb to replace instrument cluster bulbs? I mean, OEM are too expensive for a bulb and you may need 25 of them.
Can anyone share a cross reference table or past experiences?
I was aiming for the LED bulbs, but the problem is that they don't dim as normal bulbs. Any thoughts on this last?
06-06-22, 01:39 PM
#28
Pit Crew
Thread Starter
Hello,
Now I'm scared to use aftermarket bulbs. Is there any reference table to understand the correct replacement Bulb to replace instrument cluster bulbs? I mean, OEM are too expensive for a bulb and you may need 25 of them.
Can anyone share a cross reference table or past experiences?
I was aiming for the LED bulbs, but the problem is that they don't dim as normal bulbs. Any thoughts on this last?
Now I'm scared to use aftermarket bulbs. Is there any reference table to understand the correct replacement Bulb to replace instrument cluster bulbs? I mean, OEM are too expensive for a bulb and you may need 25 of them.
Can anyone share a cross reference table or past experiences?
I was aiming for the LED bulbs, but the problem is that they don't dim as normal bulbs. Any thoughts on this last?
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ES - 1st to 4th Gen (1990-2006)
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