dtc 1602

 
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monte0Offline
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keith
1999 Other Car
Joined: 11 Jul 2005
Location: gates
Age: 45
PostPosted: Mon Apr 28, 2008 10:42 am    Post subject: dtc 1602 Reply with quote

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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dezldave961Offline
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Dave P.
2004 Regal GS
Joined: 23 Nov 2003
Location: Omaha, NE (was Rome, NY long ago)
Age: 40
PostPosted: Mon Apr 28, 2008 11:54 am    Post subject: Reply with quote

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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monte0Offline
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keith
1999 Other Car
Joined: 11 Jul 2005
Location: gates
Age: 45
PostPosted: Mon Apr 28, 2008 9:45 pm    Post subject: Reply with quote

thanks...to bad GM isn't more specific to which module
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dezldave961Offline
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Dave P.
2004 Regal GS
Joined: 23 Nov 2003
Location: Omaha, NE (was Rome, NY long ago)
Age: 40
PostPosted: Mon Apr 28, 2008 9:55 pm    Post subject: Reply with quote

the ABS... EBTCM means Electronic Brake - Traction Control Module

- Dave
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monte0Offline
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keith
1999 Other Car
Joined: 11 Jul 2005
Location: gates
Age: 45
PostPosted: Tue Apr 29, 2008 10:02 pm    Post subject: Reply with quote

aa..ok
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luch90Offline
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dave luce
2000 Grand Prix GT
Joined: 04 Mar 2008
Location: dansville
Age: 48
PostPosted: Fri May 02, 2008 8:07 pm    Post subject: Reply with quote

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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BigEd88Offline
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Ed Green
2004 Grand Prix GTP CompG
Joined: 19 Apr 2007
Location: Amherst (Buffalo), NY
Age: 36
PostPosted: Fri May 02, 2008 8:48 pm    Post subject: Reply with quote

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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monte0Offline
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keith
1999 Other Car
Joined: 11 Jul 2005
Location: gates
Age: 45
PostPosted: Sat May 03, 2008 11:39 am    Post subject: Reply with quote

yep, it's lite up like a christamas tree Laughing Going to diag. tommarow looks like so I'll let you guys know the outcome
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JimOffline
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Jim
2005 Grand Prix GTP CompG
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PostPosted: Sun May 04, 2008 5:48 am    Post subject: Reply with quote

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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Carl
1996 Other Car
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PostPosted: Sun May 04, 2008 6:57 am    Post subject: Reply with quote

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 Mad
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bluto2000gsOffline
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Carl
1996 Other Car
Joined: 31 Mar 2004
Location: Lima, NY
Age: 53
PostPosted: Sun May 04, 2008 6:59 am    Post subject: Reply with quote

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 Mad

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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