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leaving it in #21 and the other on the battery ground it is 1.742
Then in reverse keeping it connected to the star connector to ground it is 1.754
I would expect that to be open to ground, not 1700 ohms. With the shorting plug removed from the star connector, that light blue wire should not have a path to ground.
I agree tolucky131969 and it seems like you have partially grounded serial line between the EBCTM and the star connector.
Try to locate the C102 connector shown below . Depending on the production line it copuld be round or squared as shown below.
Open(split) the C102 connector and measure resistance between ground and the serial pin in bothe the male and the female plug when they are separated .
With this action you measure ground resistance on the serial line towards the EBCTM and the Starconnector in two separate actions .
Hopefully you will locate which end of the serial wire the ground is introduced
I looked in my engineroom and it seems like the C102 connector and several similar shaped are located between battery and the right front fender like this photo shows
Something does not make sense. You previously read 1700 ohms to ground before. Now you are reading open on the firewall side, and 5.9 mega ohms on the engine side....essentially open. Either you are on the wrong connector, or your setup was grounding somewhere before.
That connector looks closer to C150. What are the wire colors?
Last edited by lucky131969; Feb 11, 2025 at 07:38 PM.
Something does not make sense. You previously read 1700 ohms to ground before. Now you are reading open on the firewall side, and 5.9 mega ohms on the engine side....essentially open. Either you are on the wrong connector, or your setup was grounding somewhere before.
That connector looks closer to C150. What are the wire colors?
I'm reading the only one of the plugs with the light blue wire.
just reconnected the c102 and retested the ebcm and it is reading. 1.755 kohms
disconnected c102 the ebcm is reading 1.755
Last edited by Woopigsooie00; Feb 11, 2025 at 07:59 PM.
I'm reading the only one of the plugs with the light blue wire.
just reconnected the c102 and retested the ebcm and it is reading. 1.755 kohms
disconnected c102 the ebcm is reading 1.755
This is getting a bit hard to follow. I do not know whether it is your meter, leads, additional wires, how they are connected, etc. Very difficult when the setup cannot be trusted.
Can you confirm you are at connector C102 ? Connector C142 , C144 and C50 has same shape/look as C102 and are located in the same area close to the fender
Removed the battery
Found 3 grey round
4 black square
they all have different colored tape on them
saw from another post colors are C142 is The Blue taped plug C144 is The Tan taped plug, C150 is The Orange taped plug
I will search out the rest when I get home.
Last edited by Woopigsooie00; Feb 12, 2025 at 08:36 AM.
So there you go, you were on the wrong connector. This is the correct connector(circled below), and the wire colors correspond with the C102 (late production) diagram posted by @oelarse
