Resolved 1g DSM starter not cranking after AT to MT swap

[Jackth3skeleton]

Hey guys! I have a 1990 eclipse (1g A/T) I did a swap with a M/T to convert it to a manual. I got everything on and tried to start it, doesn’t turn over. I can hear the starter I’d assume clicking but nothing, I tried jumping the starter but to no avail. Does anyone know how to go about this? Do I have to bypass the neutral safety switch that was originally in the A/T? I don’t have the clutch safety switch hooked up either. Please get back to me with any help.

 

[19Eclipse90]

So, it still has the auto engine control harness? If so, the inhibitor switch needs to be jumpered, pin 8 to pin 9, for the starter to work in a manual transmission setup.

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[Jackth3skeleton]

So, it still has the auto engine control harness? If so, the inhibitor switch needs to be jumpered, pin 8 to pin 9, for the starter to work in a manual transmission setup.

How are you doing, and yes sir it still has the auto harness in it. I’m not too skilled in electrical (also previous owner wired the battery to the trunk) so could you put it in layman’s terms or more specifics. Where is the inhibitor switch located?

 

[19Eclipse90]

The inhibitor switch was a part on the automatic transmission, preventing starting while the car is in reverse or any forward gear. A rectangular electrical connector on the engine control harness connected to it. That’s what you need to find. The connector is a 12-position (2 row, 6 pins per row) connector, should look like this from the harness side:

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The wiring diagram for the inhibitor switch connector, B-25, is this:

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Basically, this shows us that of the 12 positions, only 11 are used and there is no wire at pin 12. Translating that information to the picture of the harness connector, we determine that these are the pin numbers:

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Pin 8 and pin 9 need to be connected. That can be either a jumper wire secured through the connector side of the connector or cutting both from the back of this connector and joining them together securely that way, via solder and heat shrink.

Disconnect the battery before doing any electrical work.

 

[Jackth3skeleton]

The inhibitor switch was a part on the automatic transmission, preventing starting while the car is in reverse or any forward gear. A rectangular electrical connector on the engine control harness connected to it. That’s what you need to find. The connector is a 12-position (2 row, 6 pins per row) connector, should look like this from the harness side:

You must be logged in to view this image or video.

The wiring diagram for the inhibitor switch connector, B-25, is this:

You must be logged in to view this image or video.

Basically, this shows us that of the 12 positions, only 11 are used and there is no wire at pin 12. Translating that information to the picture of the harness connector, we determine that these are the pin numbers:

You must be logged in to view this image or video.

Pin 8 and pin 9 need to be connected. That can be either jumper wire secured through the connector sides of the connector or cutting both from the back of this connector and joining them together securely that way, via solder and heat shrink.

Disconnect the battery before doing any electrical work.

My good sir Mr. 19eclipse90 it WORKED!

Thank you so much, you’re an absolute lifesaver. Also appreciate the fact you didn’t bash me for not understanding what you were explaining with the diagram as well. I got another question for you for future reference if you don’t mind, how do you check/read codes from a check engine light in our 1gs? Can you get a OBD1 to OBD2 converter of sorts so you can hook on a OBD2 reader? Or how exactly step by step do you go about checking coded if not the case?

 

[19Eclipse90]

Pulling codes on a 1G

Before I got ECMLink, I relied on an analog voltmeter and it worked just fine. Important to note the key must be in the ON position when trying to read codes.

 

[steve]

how do you check/read codes from a check engine light in our 1gs? Can you get a OBD1 to OBD2 converter of sorts so you can hook on a OBD2 reader? Or how exactly step by step do you go about checking coded if not the case?

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[Jackth3skeleton]

The inhibitor switch was a part on the automatic transmission, preventing starting while the car is in reverse or any forward gear. A rectangular electrical connector on the engine control harness connected to it. That’s what you need to find. The connector is a 12-position (2 row, 6 pins per row) connector, should look like this from the harness side:

You must be logged in to view this image or video.

The wiring diagram for the inhibitor switch connector, B-25, is this:

You must be logged in to view this image or video.

Basically, this shows us that of the 12 positions, only 11 are used and there is no wire at pin 12. Translating that information to the picture of the harness connector, we determine that these are the pin numbers:

You must be logged in to view this image or video.

Pin 8 and pin 9 need to be connected. That can be either a jumper wire secured through the connector side of the connector or cutting both from the back of this connector and joining them together securely that way, via solder and heat shrink.

Disconnect the battery before doing any electrical work.

I appreciate you very much man, i got the swap done and running now!