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562T starting problem


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rutroh 
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Joined: December 02, 2005
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Posted: December 02, 2005 at 7:21 PM / IP Logged  

I have recently installed a valet 562T on a 2000 chevy blazer.  All went well except actually starting it.  I have increased the cracking time to max and have triple checked the wiring.  Cranks fine but isn't starting.  Ignition (heavy gaure) wiring is as follows

Purple            cut yellow starter wire (starter side)

green             cut yellow starter wire (key side)

red                  red ignition harness

orange           orange accessory wire ignition harness

pink                pink 1st ignition harness

pink/white      white 2nd ignition harness

Cranking, locks, etc works fine except starting and if I put the key to "on" it starts with no problem.  I have noticed that when I attempt to start via the remote starter, I do not hear the fuel pump.  The only heavy gauge wires left going to the ignition are brown and RED / white.  I know the brown is another accesory because it drops to 0 volts during cranking under key operation.  Any assistance would be greatly appreciated.

chriswallace187 
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Posted: December 02, 2005 at 8:34 PM / IP Logged  
What bypass module did you use for the Passlock II?
C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
chris354 
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Posted: December 02, 2005 at 9:01 PM / IP Logged  

You should use the RED / white to power one of the 562t heavy gauge red wires. This will not cause it not to start but will keep you from blowing the main power fuse. I would say the reason its not starting is the passlock system.

rutroh 
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Posted: December 02, 2005 at 10:44 PM / IP Logged  

Using 555L bypass wired as following

BLACK / YELLOW              yellow bcm cut side

yellow                         yellow passlock cut side

BLACK/ white                 no connection

black                            ORANGE / black passlock/bcm

blue/black                   blue 562T status output

violet                             no connection

pink                               heavy gauge pink ignition harness

red                                 constant +12 volts

Started engine for at least 5 seconds for bypass to learn code. 

chriswallace187 
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Posted: December 03, 2005 at 2:51 AM / IP Logged  
The bypass info sounds right; I would check your tach connection, and try to relearn it. Also, as chris354 mentioned you should use both power wires from the harness.
C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
rutroh 
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Posted: December 03, 2005 at 10:47 AM / IP Logged  

If the bypass module was incorrectly connected, would the engine even turn over?  Tach wire is connected via the violet/white wire on H3 to the white wire red plug pin 20 on the pcm.  This wire was verified by doing a resistance test by probing middle of wire wire and end of plug pin 20.  Does anyone know which wire from the ignition switch causes the fuel pump to run for 3 seconds with the key in the "run" position.  If any one knows where I can find the fuel pump connections, I was considering tapping into the fuel pump via the remote pink or pink/white to see if I could energize the fuel pump.  I believe that is the root of this problem but I appreciate everyone input.  This is the fourth remote starter I have installed (not on this vehicle) and am pulling what little hair I have left out.   LOL

chriswallace187 
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Posted: December 03, 2005 at 3:40 PM / IP Logged  
I don't think powering the fuel pump would do much good, because the PCM would still not let the injectors open if it didn't get the correct Passlock info. The fuel pump isn't powered directly by the ignition - it's got a relay which is activated by the PCM.
The question about the tach - when you start the car and hold the valet switch in, does the LED light up? If it doesn't, then the unit is not learning the tach...sometimes you can hook them up to a 'tach' wire, but they won't learn it for whatever reason; however DEI products will also learn a fuel injector wire.
Another thing I was thinking of...I've had a few GM vehicles where if you didn't power all accessory wires, or powered one of them as an ignition, the Passlock wouldn't work. The reason for that is that the BCM looks for a resistance code only when the key is in the crank position(i.e. when the accessory wire loses voltage).
C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
mrjc480 
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Posted: December 03, 2005 at 6:09 PM / IP Logged  
From the 562t sattelite relay are both red 12+ connected to constant?
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rutroh 
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Posted: December 04, 2005 at 10:27 AM / IP Logged  

mrjc480 wrote:
From the 562t sattelite relay are both red 12+ connected to constant?

One has always been connected to =12 constant but I was previously told to connect the other to the RED / white access.  Should one go to the red +12 constant at the ignition harness and the other go fused off the battery? 

I have gone through and checked every connection more than twice and made sure all fuses were good. Vehicle starts with key with no problem, unless 555L is unplugged.  The point I am at now is doors lock and unlock with no problem, light comes on with valet switch pressed and key on, so tach is learned.  Even purchased new 555L to verify I didn't get the "rare" bad one, I have allowed it to learn for at least 30 seconds.  If I attempt to remote start, the engine will turn over 3 seperate times (set to max crank time) and will not start unless the key is in the first (acc) position. 

I really appreciated everyone input. 

Mike M2 
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Posted: December 04, 2005 at 11:29 AM / IP Logged  
Both reds should be at 12v on the ignition harness, which is red. There may be a RED / white there also, and that should be a constant 12v too, not accessory. If there is that can used....
Mike M2
Tech Manager
CS Dealer Services
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