Help with PCM-P1545 C
Thread Starter
Racer
Joined: Apr 2002
Posts: 484
Likes: 0
From: Waldorf MD
Help with PCM-P1545 C
Hello All,
My brother-in-law has the following code on his 97 coupe. Can anyone help with a fix for this code? What must be done to fix the problem?
Powertrain Control Module P1545 A/C Clutch Relay Control Circuit -C
Also, he has a new battery and a new altenator but his DIC only shows 12.9 volts and the car has a whine to it at low speeds (below 20 mph). Could any of this be related?
Any help would be greatly appreciated.
Thanks.
My brother-in-law has the following code on his 97 coupe. Can anyone help with a fix for this code? What must be done to fix the problem?
Powertrain Control Module P1545 A/C Clutch Relay Control Circuit -C
Also, he has a new battery and a new altenator but his DIC only shows 12.9 volts and the car has a whine to it at low speeds (below 20 mph). Could any of this be related?
Any help would be greatly appreciated.
Thanks.
Burning Brakes
Joined: Oct 2005
Posts: 924
Likes: 161
From: Atwater CA
2024 C7 of the Year Finalist - Unmodified
Obviously, the Air Conditioning Clutch (the clutch on the front of the air conditioning compressor) control circuit is throwing up the code. Check the electrical connections to the a/c compressor and the belt for the a/c compressor and its idler pulleys. Maybe take the a/c belt off and see if the compressor and the idlers are ok. One of these things is the likely source of the whine...
Regarding the low voltage, you might want to check this thread about cleaning the grounds
http://forums.corvetteforum.com/showthread.php?t=896875
Regarding the low voltage, you might want to check this thread about cleaning the grounds
http://forums.corvetteforum.com/showthread.php?t=896875
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Originally Posted by Villain
Hello All,
My brother-in-law has the following code on his 97 coupe. Can anyone help with a fix for this code? What must be done to fix the problem?
Powertrain Control Module P1545 A/C Clutch Relay Control Circuit -C
Also, he has a new battery and a new altenator but his DIC only shows 12.9 volts and the car has a whine to it at low speeds (below 20 mph). Could any of this be related?
Any help would be greatly appreciated.
Thanks.
My brother-in-law has the following code on his 97 coupe. Can anyone help with a fix for this code? What must be done to fix the problem?
Powertrain Control Module P1545 A/C Clutch Relay Control Circuit -C
Also, he has a new battery and a new altenator but his DIC only shows 12.9 volts and the car has a whine to it at low speeds (below 20 mph). Could any of this be related?
Any help would be greatly appreciated.
Thanks.
Chris
Drifting
Joined: Oct 2003
Posts: 1,540
Likes: 0
From: bloomfield nj
fault is for the RELAY circuit.the pcm knows the hvac unit requested a/c but knows the compressor hasn't come on.possibilities-blown compressor fuse,low refridgerant,etc.i would heck the refridgerant weight first,if the stuff is low,the low pressure switch will keep the compressor from coming on[keeps he compressor from blowing up].the pcm will disengage the relay
Thread Starter
Racer
Joined: Apr 2002
Posts: 484
Likes: 0
From: Waldorf MD
Originally Posted by dpd
fault is for the RELAY circuit.the pcm knows the hvac unit requested a/c but knows the compressor hasn't come on.possibilities-blown compressor fuse,low refridgerant,etc.i would heck the refridgerant weight first,if the stuff is low,the low pressure switch will keep the compressor from coming on[keeps he compressor from blowing up].the pcm will disengage the relay
Thanks a million for the advice.
