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monte0 Total posts: 1144
keith1999 Other Car Joined: 11 Jul 2005 Location: gates Age: 46 |
 Posted: Mon Apr 28, 2008 10:42 am Post subject: dtc 1602 |
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This is in my buddies GS, it says "dtc 1602 loss of EBTCM serial data".
sound like a bus control problem. Any idea's guys?
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| dezldave961 Total posts: 808
Dave P.2004 Regal GS Joined: 23 Nov 2003 Location: Omaha, NE (was Rome, NY long ago) Age: 41 |
| Posted: Mon Apr 28, 2008 11:54 am Post subject: |
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This is all I see in the GM manual for quick suggestions:
| Quote: | An intermittent may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation. Check for the following conditions:
- Intermittent short circuit on the serial data circuit.
- Poor connection. Inspect the PCM and the affected control module harness and related connectors for improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
- Damaged harness. Inspect the wiring harness for damage. Check for an intermittent short or open circuit in the wiring harnesses related to the affected control module, including the ignition, battery feed, ground, and serial data circuits. |
- Dave
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2004 Regal GSX - YouTube channel Stattama T67BB, A2W IC, ST5, heads, L32, GMR diff/chain (11.46 w/ Z7 T66, IS3t cam)
2006 Grand Prix GXP - K&N intake and mufflers only, basically stock for me
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| monte0 Total posts: 1144
keith1999 Other Car Joined: 11 Jul 2005 Location: gates Age: 46 |
| Posted: Mon Apr 28, 2008 9:45 pm Post subject: |
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| thanks...to bad GM isn't more specific to which module |
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| dezldave961 Total posts: 808
Dave P.2004 Regal GS Joined: 23 Nov 2003 Location: Omaha, NE (was Rome, NY long ago) Age: 41 |
| Posted: Mon Apr 28, 2008 9:55 pm Post subject: |
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the ABS... EBTCM means Electronic Brake - Traction Control Module
- Dave |
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| monte0 Total posts: 1144
keith1999 Other Car Joined: 11 Jul 2005 Location: gates Age: 46 |
| Posted: Tue Apr 29, 2008 10:02 pm Post subject: |
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| aa..ok |
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| luch90 Total posts: 7
dave luce2000 Grand Prix GT Joined: 04 Mar 2008 Location: dansville Age: 49 |
| Posted: Fri May 02, 2008 8:07 pm Post subject: |
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| not causing a check engine light is it? this type of code is very common on gms and is usually due to a faulty abs module. if theres no other problems/no lights on id leave well enough alone |
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| BigEd88 Total posts: 704
Ed Green2004 Grand Prix GTP CompG Joined: 19 Apr 2007 Location: Amherst (Buffalo), NY Age: 36 |
| Posted: Fri May 02, 2008 8:48 pm Post subject: |
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I'm gonna guess the traction control and ABS lights are on, I had this code on my fathers car when I had the module/unit unplugged.
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| monte0 Total posts: 1144
keith1999 Other Car Joined: 11 Jul 2005 Location: gates Age: 46 |
| Posted: Sat May 03, 2008 11:39 am Post subject: |
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yep, it's lite up like a christamas tree  Going to diag. tommarow looks like so I'll let you guys know the outcome |
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| Jim Total posts: 104
Jim2005 Grand Prix GTP CompG Joined: 06 Jun 2005 Location: North Tonawanda Age: 18 |
| Posted: Sun May 04, 2008 5:48 am Post subject: |
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| monte0 wrote: | | yep, it's lite up like a christamas tree |
Is there a Wiz-Air box in the car? It will damaged the harness. Inspect the wiring harness for damage. Check for a short in the wiring harnesses at the box. Try moving the wiring harnesses into the box with the car off, start the car,, did it go away. You found your short. Retape it
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| bluto2000gs Total posts: 3300
Carl1996 Other Car Joined: 31 Mar 2004 Location: Lima, NY Age: 53 |
| Posted: Sun May 04, 2008 6:57 am Post subject: |
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| Jim wrote: | | monte0 wrote: | | yep, it's lite up like a christamas tree |
Is there a Wiz-Air box in the car? It will damaged the harness. Inspect the wiring harness for damage. Check for a short in the wiring harnesses at the box. Try moving the wiring harnesses into the box with the car off, start the car,, did it go away. You found your short. Retape it |
The light will go away when you restart the car if you fix it or not. Those lights and code only occure when the system check fails. So it will go off when you restart the car but come back on unless you fix the problem 
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| bluto2000gs Total posts: 3300
Carl1996 Other Car Joined: 31 Mar 2004 Location: Lima, NY Age: 53 |
| Posted: Sun May 04, 2008 6:59 am Post subject: |
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| Jim wrote: | | monte0 wrote: | | yep, it's lite up like a christamas tree |
Is there a Wiz-Air box in the car? It will damaged the harness. Inspect the wiring harness for damage. Check for a short in the wiring harnesses at the box. Try moving the wiring harnesses into the box with the car off, start the car,, did it go away. You found your short. Retape it |
The light will go away when you restart the car if you fix it or not. Those lights and code only occure when the system check fails. So it will go off when you restart the car but come back on unless you fix the problem
Mine is on to but I have not dug in yet.
I was shooting for bad sensor/harness, or EBTCM. I am also getting false activation and the lights come on when driving over large bumps. |
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