P1571 Traction Control PWM Link
08-30-2010, 10:56 PM
#21
Racer
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OK...back in business.
Checked all the fuses in the underhood fuse box.
All related to PCM registered voltage. Only those related to horn/lights/etc had no voltage.
Which (specifically) fuses am I checking (fuse numbers)?
You showed the EBCM...am I supposed to pull the connector and check voltage there?
Checked all the fuses in the underhood fuse box.
All related to PCM registered voltage. Only those related to horn/lights/etc had no voltage.
Which (specifically) fuses am I checking (fuse numbers)?
You showed the EBCM...am I supposed to pull the connector and check voltage there?
08-30-2010, 11:28 PM
#22
Tech Contributor
OK...back in business.
Checked all the fuses in the underhood fuse box.
All related to PCM registered voltage. Only those related to horn/lights/etc had no voltage.
Which (specifically) fuses am I checking (fuse numbers)?
You showed the EBCM...am I supposed to pull the connector and check voltage there?
Checked all the fuses in the underhood fuse box.
All related to PCM registered voltage. Only those related to horn/lights/etc had no voltage.
Which (specifically) fuses am I checking (fuse numbers)?
You showed the EBCM...am I supposed to pull the connector and check voltage there?
09-04-2010, 10:28 PM
#23
Racer
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Now what???
09-04-2010, 10:31 PM
#24
Tech Contributor
09-04-2010, 11:22 PM
#26
Tech Contributor
Not to belabor the point, but I've never seen the internal contacts on an ignition switch look factory new, even in some low mile cars.
Just so we are talking about the same thing. You actually disassembled the ignition switch(in a manner like Bill's repair thread)?
Just so we are talking about the same thing. You actually disassembled the ignition switch(in a manner like Bill's repair thread)?
11-15-2010, 06:24 PM
#27
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Here is the reason he is getting Radio NO COMM because of
No comms on Radio...is that because I replaced the head unit with an aftermarket stereo?
YES....
I suspect you should continue to follow Bill's line of troubleshooting.
No comms on Radio...is that because I replaced the head unit with an aftermarket stereo?
YES....
I suspect you should continue to follow Bill's line of troubleshooting.
01-04-2011, 09:30 PM
#28
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Removed both battery terminals, checked and cleaned
Checked Voltage before reinstall: 12.3 V
Reconnected Battery to specifications..same messages in DIC return.
Tried to reset TCS....continues to read NO COMMS
Same three codes continue to set after reset.
PCM P1571 H C
TCS NO COMMS
RTD C0710 H C
SDM U1040 H C
RADIO NO COMMS
Checked Voltage before reinstall: 12.3 V
Reconnected Battery to specifications..same messages in DIC return.
Tried to reset TCS....continues to read NO COMMS
Same three codes continue to set after reset.
PCM P1571 H C
TCS NO COMMS
RTD C0710 H C
SDM U1040 H C
RADIO NO COMMS
Update please.
01-04-2011, 09:46 PM
#29
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
For a module to have NO COMMS, it has to have one or more of the following issues:
NO 12 VDC "hot at all times power"
NO 12 VDC "hot in run and start power"
Damaged comms wire
Damaged ground
Check the fuses for the EBTCM.
Check the grounds for that module.
Check the serial buss data line and the STAR Buss connectors:
NO 12 VDC "hot at all times power"
NO 12 VDC "hot in run and start power"
Damaged comms wire
Damaged ground
Check the fuses for the EBTCM.
Check the grounds for that module.
Check the serial buss data line and the STAR Buss connectors:
Last edited by Bill Curlee; 01-04-2011 at 09:50 PM.
10-03-2012, 04:19 PM
#30
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is your problem resolved?? can you tell me what was wrong?? i have the same TCS NO COMMS ....... !! help
02-01-2020, 02:45 PM
#31
Burning Brakes
P1571 along with TCS No COMM
I'm having this problem, and this 9 year old thread is being helpful AF.
Thanks to Bill Curlee for the great diagnostic advice. (Would be nice if the OP would have chimed in with their solution, though).
I'm off to check grounds.
Thanks to Bill Curlee for the great diagnostic advice. (Would be nice if the OP would have chimed in with their solution, though).
I'm off to check grounds.
02-01-2020, 05:19 PM
#32
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Best if you start a new thread with your issue !!
