My ABS saga

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Jul 13, 2020 | 08:23 PM

#21

skrimshaw90

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Racer

Joined: Jun 2020

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Could i take the cluster out of my other car and see if thats the problem?

Jul 14, 2020 | 11:51 AM

#22

skrimshaw90

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Racer

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I just swapped clusters and im still getting no comm and abs/tc lights.

Jul 14, 2020 | 01:26 PM

#23

skrimshaw90

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Racer

Joined: Jun 2020

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Also put in another bcm with no luck.

I'm getting good readings on all wires at the Starbus except the green wire which from what i read is the pcm. Would that be the issue?

Jul 14, 2020 | 01:33 PM

#24

C5 Diag

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From: Cape Coral, Florida

But are you receiving PCM no comms from any of the modules ??...there are 2 green wires...dark green is PCM and light green is BCM...what kind of readings are you seeing ???

Last edited by C5 Diag; Jul 14, 2020 at 01:33 PM.

Jul 14, 2020 | 02:41 PM

#25

GCG

Melting Slicks

Joined: Jan 2009

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From: Miami FL

Quote:

Originally Posted by skrimshaw90

...I'm getting good readings on all wires at the Starbus except the green wire, which from what I read is the PCM. Would that be the issue?

Quote:

Originally Posted by C5 Diag

But are you receiving PCM no comms from any of the modules ??...

@skrimshaw90 I agree that it would be weird not to be receiving PCM no-comms from other modules as well, but just to be thorough, I would suggest to backprobe Pin 58 from PCM's Connector C1 and compare the reading to what you got at Pin B from Star Connector 1 to verify the DK GRN wire

Jul 14, 2020 | 03:36 PM

#26

skrimshaw90

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Racer

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I checked my other car and got the same reading so thats not the issue.

Jul 14, 2020 | 03:47 PM

#27

oelarse

Burning Brakes

Joined: Jul 2011

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From: Southern Norway , Europe

With disconneted PCM connector and with the Star connector bus disconneted, try to measure the resistance of the serial PCM wire between the two end points. This wire maybe have continiuity problems

Jul 14, 2020 | 07:35 PM

#28

skrimshaw90

Thread Starter

Racer

Joined: Jun 2020

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The pcm wire isnt the issue, i checked the other car and its good

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Jul 14, 2020 | 08:23 PM

#29

C5 Diag

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From: Cape Coral, Florida

I’m assuming you’re getting your DTC’s from the DIC ??...you really should have a scan tool that can read ALL the modules...if you had such a scan tool you can see if you can truly communicate or not !!

Jul 14, 2020 | 08:35 PM

#30

skrimshaw90

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Racer

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My scanner only brings up b1001 and u1040

Jul 14, 2020 | 08:40 PM

#31

C5 Diag

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From: Cape Coral, Florida

Quote:

Originally Posted by skrimshaw90

My scanner only brings up b1001 and u1040

Thats only a code reader !!...having 2 Corvettes I would seriously invest in a good scan tool that can read enhanced OBD2 DTC’s !!...some are not that expensive !!

Jul 14, 2020 | 08:57 PM

#32

skrimshaw90

Thread Starter

Racer

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Its a decent obd2 device, something interesting I can do qn abs pump test and I was able to complete it on my white one. But on my black one it says it can't communicate with the module.

Jul 15, 2020 | 01:48 PM

#33

skrimshaw90

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Racer

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Ive got to be missing something, g103 looks good and g108. 12v constant is good along with 12v key on, im running out of ideas lol

Jul 15, 2020 | 02:22 PM

#34

C5 Diag

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Joined: Sep 2013

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From: Cape Coral, Florida

Quote:

Originally Posted by skrimshaw90

Ive got to be missing something, g103 looks good and g108. 12v constant is good along with 12v key on, im running out of ideas lol

“Looks good” is not good enough !!..have these grounds been tested ??

Jul 15, 2020 | 02:36 PM

#35

Speedy007

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Joined: Mar 2018

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From: California

Since the underlying issue seems to be in the TCS setting this off . Inspect under your middle console shifter area for exposed wires that have rubbed through. Check wires around the wheels /wheel speed sensors . I think you will most likely find your issue inside the car

Jul 15, 2020 | 02:38 PM

#36

Speedy007

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From: California

how old are the wheel bearings on this thing?

Last edited by Speedy007; Jul 15, 2020 at 02:39 PM.

Jul 15, 2020 | 02:43 PM

#37

skrimshaw90

Thread Starter

Racer

Joined: Jun 2020

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Front wheel bearings are new sfk units.

I used a bulb to check both grounds at the abs connector and they were good.

Jul 15, 2020 | 02:49 PM

#38

Speedy007

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From: California

If u clear the code how long until it reads back in the dtc?

Jul 15, 2020 | 02:56 PM

#39

skrimshaw90

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Racer

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Instant

Jul 15, 2020 | 03:23 PM

#40

Speedy007

Melting Slicks

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From: California

Quote:

Originally Posted by C5 Diag

Don’t know what that may be ??...that’s inboard of the battery tray.

Looks like the Bose amp wires but u never can be to sure try match them up at the foot well bcm. And see if anything came loose got cut ect....

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