Throwing codes(a lot of them)
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
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From: Sebastian Florida
St. Jude Donor '06
Throwing codes(a lot of them)
Under section 1, the codes are 72 & 74.
What type of code are these?
Under sect. 4 -
15 - Coolant signal below -56 degrees
26 - Quad Driver # 1
28 - Quad Driver # 3
64 - this one I think was caused when I blew a heater hose.
What are Quad Drivers and which coolant sensor is the code 15 saying is bad or has a bad connection?
What type of code are these?
Under sect. 4 -
15 - Coolant signal below -56 degrees
26 - Quad Driver # 1
28 - Quad Driver # 3
64 - this one I think was caused when I blew a heater hose.
What are Quad Drivers and which coolant sensor is the code 15 saying is bad or has a bad connection?
Last edited by Randy93; Dec 8, 2005 at 04:05 PM.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Originally Posted by Randy93
What are Quad Drivers
http://www.troublecodes.net/articles/quaddriver.shtml
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Thanks, that tells what a Quad driver is; but not what devices drivers #1 and #3 control. But it atleasts points me in a direction to look, just wish it didn't confrm the my ECM is shot.
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Originally Posted by Redeasysport
If I remember right quad drivers are the ECM.Looks like your ECM bit the big one to me.
So, Red for the $64k dollar question; can you tell me what devices those 2 drivers control?
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
From what I have seen that many things can't go bad at once.You have seen this before
http://forums.corvetteforum.com/show...m_id=48&arch=1
My bet is your ECM is bad but you can try OHMing the wires for shorts.
http://forums.corvetteforum.com/show...m_id=48&arch=1
My bet is your ECM is bad but you can try OHMing the wires for shorts.
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Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Originally Posted by Redeasysport
From what I have seen that many things can't go bad at once.You have seen this before
http://forums.corvetteforum.com/show...m_id=48&arch=1
My bet is your ECM is bad but you can try OHMing the wires for shorts.
http://forums.corvetteforum.com/show...m_id=48&arch=1
My bet is your ECM is bad but you can try OHMing the wires for shorts.
I am going to clean all my connections this weekend and where is a good place to get another ECM?
Mine is a DD, so I cannot wait to have mine rebuilt.
Thanks Red, even though you helped me make look real DUMB!!
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
Originally Posted by Randy93
Now that I showed my lack of memory, what are CCM errors 72 and 74?
The H means its a history code. The 72 and 74 are codes associated with the dimming circuit. Here's the tech info on it... http://www.corvetteforum.net/c4/dave8476/index4.shtml Here is the simple fix... If "SYS" is displayed in the LCD section of the instrument panel cluster after the customer installs a new stereo, he will need to do the following:
1. Buy (2) 1 kilo-ohm 1/2 Watt resistors. [Radio Shack part # 271-023. They sell them as a 2-pack for 29 cents.]
2. Disconnect the negative battery cable.
3. Remove the receiver.
4. Connect one end of both resistors to ignition power. (Yellow wire in the car.)
5. Connect the other end of one resistor to the purple/white wire in the car.
6. Connect the other end of the second resistor to the grey/black wire in the car.
7. Cover all connections and completely cover the resistors.
8. Reconnect the negative battery cable
:yesnod
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
I don't have my Helms in front of me right now, but the CCM also senses the "bells and whistles" in additon to the radio. Check to see all your fuses are good. Be sure all your accessories are working ie: dash dimming, courtsey lamps, etc. Maybe someone will jump in with the CCM codes for you. I'm getting up there too. 
Melting Slicks
Joined: Apr 2000
Posts: 3,490
Likes: 2
From: Oviedo FL
Hey Randy,
the code 15 is the coolant temp sensor in the water pump. I was getting that and had Norris replace the sensor. The day I got it back I was still getting the code. Turned out to be the piggyback harness connector in the waterpump. It needed to be replaced and that solved it.
Mike
the code 15 is the coolant temp sensor in the water pump. I was getting that and had Norris replace the sensor. The day I got it back I was still getting the code. Turned out to be the piggyback harness connector in the waterpump. It needed to be replaced and that solved it.
Mike
Thread Starter
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Thanks Mike, I will look into that.
My dimmer works fine and I can't find a blown fuse, but I am going to take my radio out this weekend. So I will clean my connections and see if that helps.
My dimmer works fine and I can't find a blown fuse, but I am going to take my radio out this weekend. So I will clean my connections and see if that helps.