parasitic drain aftermath
Thread Starter
6th Gear
Joined: Sep 2009
Posts: 6
Likes: 0
From: Newaygo MI
parasitic drain aftermath
I have a 2001 Corvette - had parasitic drain -tested drain using Bill Curlee method - removed 1 fuse at a time - no change in drain - removed all fuses and C.Bs - no change in drain - disconnected starter - no more drain - replaced starter - connected starter wires as disconnected - all fuses and C.B.s reinstalled as removed - no drain on battery - tried to start car - starter works great - BUT car wont start -tried to wake up BCM (removal and reinstallation of fuse #25)- checked DTC codes - no new codes (only history types)
I would greatly appreciate any ideas on a fix.
Thanks in advance
drehi
I would greatly appreciate any ideas on a fix.
Thanks in advance
drehi
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
What is a C.B. in the context you used? The relays?
Did any of the modules show as "no comms" when you checked the codes?
Does the fuel pump run?
Did you check to see if the engine has spark?
Did you double and triple check that you got all the fuses and relays back into their correct locations?
The BCM must be working to allow the starter to engage, otherwise the security relay would not engage the starter.
Did any of the modules show as "no comms" when you checked the codes?
Does the fuel pump run?
Did you check to see if the engine has spark?
Did you double and triple check that you got all the fuses and relays back into their correct locations?
The BCM must be working to allow the starter to engage, otherwise the security relay would not engage the starter.
Thread Starter
6th Gear
Joined: Sep 2009
Posts: 6
Likes: 0
From: Newaygo MI
no modules show as "no comms"
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
Tech Contributor
Joined: Jan 2007
Posts: 19,462
Likes: 1,166
From: Dyer, IN
no modules show as "no comms"
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
Race Director
Joined: May 2012
Posts: 15,765
Likes: 3,282
From: Phoenix area, AZ
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
I think the BCM is working as all other functions seem to work.
Tech Contributor
Joined: Jan 2007
Posts: 19,462
Likes: 1,166
From: Dyer, IN
If the key was not being read by the lock cylinder, the engine would not crank.
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Tech Contributor
Joined: Jan 2007
Posts: 19,462
Likes: 1,166
From: Dyer, IN
no modules show as "no comms"
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
no fuel
no spark
I took pictures of fuse boxes before I removed the electrical devices - I have checked and rechecked the reinstallation of the fuses and C.Bs and relays.
Alarm horn blows - I think that the anti-theft system is on - I have tried resetting the anti-theft system as recommended by a number of sources - key on wait 10 minutes - key on /crank for 2 seconds/wait 10-12 minutes/try again (3 times) - no luck
I think the BCM is working as all other functions seem to work.
dazed and confused
ehi
(C.B. is an abbrevation for circuit breaker) sorry I should have spelled it out
Race Director
Joined: May 2012
Posts: 15,765
Likes: 3,282
From: Phoenix area, AZ