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I have 2007 suzuki xl7 replaced timing chains, I like to…

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I have 2007 suzuki...

I have 2007 suzuki xl7 replaced timing chains, I like to perform compression check before starting engine. Car would not crank after third hole checked. can no longer communicate to ECU through scanner. red blinking light atop dash no longer comes on, instead a yellow security indicator in instrument panel does, never did before. door chime dings erratically when key is in on position, all doors closed and headlights turned off. The indicator lights in the steering wheel and heater control panel consisting of radio and the traction control light at the bottom of gear selector all glow, even when key is removed, doors locked and alarm set.

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

Name is sam

Submitted: 2 years ago.Category: Car
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Answered in 4 hours by:
2/16/2016
Auto Mechanic: tripletauto, ASE Certified Technician replied 2 years ago
tripletauto
tripletauto, ASE Certified Technician
Category: Car
Satisfied Customers: 502
Experience: ase certifed master tech gm certifed 20 years experience
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Hello. So all this happened after you did a compression test? From what you are describing you have a loose ground on the engine causing communication issues. Check all your grounds and let me know what you find.

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Customer reply replied 2 years ago
I already checked grounds and even added one for good measure since a lost ground can cause strange results.regards,sam
Auto Mechanic: tripletauto, ASE Certified Technician replied 2 years ago

There is a couple different ground wires adding a ground will not do anything unless it was a problem with main ground wire. Look at the ones around the intake area tug on wires and be sure they are not broke inside insulation.

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Customer reply replied 2 years ago
not after I finished compression test, I was in the middle of it. only checked three holes when it stopped working.
Auto Mechanic: tripletauto, ASE Certified Technician replied 2 years ago

Is the check engine light coming on? Security light?

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Customer reply replied 2 years ago
the red light on top of dash no longer comes on or blinks (alarm). Instead a yellow security light in the dash comes on, I never seen it before. it comes on when I lock the doors and blinks when I push the button a second time. there is no longer a connection through the DATA LINK CONNECTOR. scanner say cannot connect. sometimes the door chimes stay on when the key is removed. message in dash say stability control message
Customer reply replied 2 years ago
I used to be able to connect the scanner, but no more.
Customer reply replied 2 years ago
there is battery power to starter relay, no ignition power though, I don't know if there should be
Customer reply replied 2 years ago
I have checked for any weak wires all around the engine looking for a lost ground on loose connection. pin #16 on the dlc has 12+
Auto Mechanic: tripletauto, ASE Certified Technician replied 2 years ago

If the security light is on in the cluster it will not crank. Check connections at exam be sure they are plugged in

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Customer reply replied 2 years ago
check connections at "exam" ?. what is it that activates the yellow security and deactivates the normal red light? My problems started with this
is there away to check ecm?
Auto Mechanic: tripletauto, ASE Certified Technician replied 2 years ago

sorry it should have said ecm. Unplug it and be sure there are no bent pins. Unhook battery for a few minutes.

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