Electrical issues, help!
Thread Starter
Instructor
Joined: Jun 2007
Posts: 146
Likes: 1
From: Williamsville NY
Electrical issues, help!
My 2000 coupe (all stock) started acting-up the other day. While driving I got TCS and ABS light on dash and (low tire pressure, low battery voltage and Service Vehicle Soon on DIC), AC stopped blowing cold, and passenger window stopped working. My battery was weak so I replaced it. However, the problem continues. I visually inspected the grounds and they appear like new. This is an intermittent issue and occurs frequently. Thanks for your feedback.
Safety Car
Joined: Mar 2015
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My 2000 coupe (all stock) started acting-up the other day. While driving I got TCS and ABS light on dash and (low tire pressure, low battery voltage and Service Vehicle Soon on DIC), AC stopped blowing cold, and passenger window stopped working. My battery was weak so I replaced it. However, the problem continues. I visually inspected the grounds and they appear like new. This is an intermittent issue and occurs frequently. Thanks for your feedback.
my car does the same but only when the moisture is high but on the nice warm days I have no problems.
Racer
Joined: Sep 2014
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From: Brooklyn, MI
Drifting
Joined: Nov 2011
Posts: 1,401
Likes: 141
From: Summerville South Carolina
Yep, pull codes and post
My 2000 coupe (all stock) started acting-up the other day. While driving I got TCS and ABS light on dash and (low tire pressure, low battery voltage and Service Vehicle Soon on DIC), AC stopped blowing cold, and passenger window stopped working. My battery was weak so I replaced it. However, the problem continues. I visually inspected the grounds and they appear like new. This is an intermittent issue and occurs frequently. Thanks for your feedback.
Dave
Last edited by David Shiel; Jun 1, 2016 at 12:19 PM.
Thread Starter
Instructor
Joined: Jun 2007
Posts: 146
Likes: 1
From: Williamsville NY
[QUOTE=David Shiel;1592332191]What is the car's mileage? Any dampness in the passenger footwell? Aways start with pulling and reporting all displayed codes. There are literally 100's of posts here, but most lead you to serial data circuit failures, BCM, ignition switches, grounds, door post plugs, battery load tests, and seat and door control modules. Bill Curlee and a few others will help you track it down for sure. Before yo do anything near the BCM, dc the neg batt terminal. I KNOW!!!
Dave
Car has 35K, moisture not an issue. Here are the codes that keep recurring:
10 PCM-P1626H
28 TCS-U1301H,U1016H
40 BCM-B0503H,B0432H,B0508H
58 SDM-U1000H,U1301H,U1064H
60 IPC-U1255H, U1064H,U1160HU1040HU1016H,U1176H,U1088H
99 HVAC-U1064H,U1160H,U1096H,U1255H
AO LCDM-U1064H
A1 RDCM-B2283H,B2277H,B2285H,B1255H,U1064H,U1016 H,U1096H
A6 SCM-U1300H,U1255H
BO RFA-U1255H,U1064H,U1096H,U1016H
I did replace the seat bushings the other day so the seat was out. I checked the wiring and the electrical harnesses are attached firmly. Thanks for your help.
Dave
Car has 35K, moisture not an issue. Here are the codes that keep recurring:
10 PCM-P1626H
28 TCS-U1301H,U1016H
40 BCM-B0503H,B0432H,B0508H
58 SDM-U1000H,U1301H,U1064H
60 IPC-U1255H, U1064H,U1160HU1040HU1016H,U1176H,U1088H
99 HVAC-U1064H,U1160H,U1096H,U1255H
AO LCDM-U1064H
A1 RDCM-B2283H,B2277H,B2285H,B1255H,U1064H,U1016 H,U1096H
A6 SCM-U1300H,U1255H
BO RFA-U1255H,U1064H,U1096H,U1016H
I did replace the seat bushings the other day so the seat was out. I checked the wiring and the electrical harnesses are attached firmly. Thanks for your help.
Melting Slicks
Joined: Jul 2004
Posts: 3,290
Likes: 477
From: Brea CA
Two things I would look into:
1. Inspect the battery cables. There are a couple of places that can be an issue. Make sure the terminals are tight on the battery. Check the connection at the starter and at the alternator. The charging wire from the alternator and the positive battery cable come together at the starter.
2. Could also be a bad ignition switch. Buried in this thread https://www.corvetteforum.com/forums...tion-long.html are instructions for repairing the switch. The contacts inside the switch can and do get arced up over time causing low voltage errors to the various computers and modules within the C5.
I would do the battery cable inspection first since it can be easier to get to the connections. Then attack the ignition switch.
Gary
1. Inspect the battery cables. There are a couple of places that can be an issue. Make sure the terminals are tight on the battery. Check the connection at the starter and at the alternator. The charging wire from the alternator and the positive battery cable come together at the starter.
2. Could also be a bad ignition switch. Buried in this thread https://www.corvetteforum.com/forums...tion-long.html are instructions for repairing the switch. The contacts inside the switch can and do get arced up over time causing low voltage errors to the various computers and modules within the C5.
I would do the battery cable inspection first since it can be easier to get to the connections. Then attack the ignition switch.
Gary
Tech Contributor
Joined: Dec 1999
Posts: 32,910
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
All those DTCs point to a power issue. Start with clean and tight battery cables and then the ignition switch.
If,,,,,,,,,,,, you are comfortable with repairing the switch you can attempt that procedure. If not, just get a new switch.
Always make sure that the IGNITION SWITCH HARNESS CONNECTOR CONTACTS are not spread apart and making poor contact with the switch connector MALE PINS.
The TWO larger pins in the BLACK CONNECTOR are spread apart and were making less than desired contact with the male pins in the ignition switch:
