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sprinkles08
sprinkles08, ASE Certified Technician
Category: Audi
Satisfied Customers: 22405
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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2008 Audi TT wont start after disconnecting the battery

Customer Question

2008 Audi TT wont start after disconnecting the battery
Submitted: 1 year ago.
Category: Audi
Expert:  FIXITMAN replied 1 year ago.
Hello, my name is***** you tell me if the engine is cranking or is it acting like a dead battery?
Customer: replied 1 year ago.
It's not cranking, just acting like a dead battery.
Customer: replied 1 year ago.
Hello Bobby
Customer: replied 1 year ago.
I'm looking forward to your help
Expert:  sprinkles08 replied 1 year ago.
Hello and welcome to JustAnswer!There are many things that could be going on. It could be a key/security/immobilizer issue, the engine controller may not be awake, it could be an ignition switch, transmission range sensor or wiring issue. The problem could be the starter itself or a cable/connection issue.Why was the battery disconnected?
Customer: replied 1 year ago.
Just to clean the terminals
Customer: replied 1 year ago.
Presently I'm not able to communicate with the ecm and the abs control modules also there is a constant flashing of the abs light and the rear spoiler lights .
Expert:  sprinkles08 replied 1 year ago.
Was polarity reversed or anything allowed to arc between a battery terminal/cable and anything else?
Customer: replied 1 year ago.
No sir not at all
Expert:  sprinkles08 replied 1 year ago.
Have all fuses been checked?
Customer: replied 1 year ago.
sir over and over.
Expert:  sprinkles08 replied 1 year ago.
Have all fuses been checked?
Customer: replied 1 year ago.
I checked all of em (fuses )
Expert:  sprinkles08 replied 1 year ago.
Have the ECM and ABS module powers and grounds been checked?Does the fuel pump not run?
Customer: replied 1 year ago.
I don't have the complete wiring diagrams for these units but I do know the ecm power relay in the front fuse box is sending that power to the ecm.
Customer: replied 1 year ago.
Disregard the call request
Expert:  sprinkles08 replied 1 year ago.
You did test at the ECM then? How many power feeds were present?
Customer: replied 1 year ago.
My shift lever is also stuck in park and the stater does not crank the engine it just operates like a dead battery.
Customer: replied 1 year ago.
Just hold while I verify with the power probe
Expert:  sprinkles08 replied 1 year ago.
Ok.
Customer: replied 1 year ago.
I found four power wires to the ecm with the connectors unplugged
Expert:  sprinkles08 replied 1 year ago.
Do you have the VIN?
Customer: replied 1 year ago.
Yep
Customer: replied 1 year ago.
TRUMF38J181033101
Expert:  sprinkles08 replied 1 year ago.
Are there any other modules that don't communicate?
Customer: replied 1 year ago.
Let me get u the full list
Expert:  sprinkles08 replied 1 year ago.
Ok.
Customer: replied 1 year ago.
Ecm,tcm,brakes, airbag, that's about it.
Expert:  sprinkles08 replied 1 year ago.
What codes are setting in the modules still communicating?
Customer: replied 1 year ago.
01206,01314,01834,01835,01502,02398,01321,01309,00002,01299,01317,01304,01325,01299,01321,29028,02214,01316.
Expert:  sprinkles08 replied 1 year ago.
Please list what codes are setting in what modules. It's after 12am here and will be going offline for the night following this post
Customer: replied 1 year ago.
Ok what time tomorrow
Customer: replied 1 year ago.
AAC-01206,01314)CENTRAL ELECTRONICS-01834,01835,01502,02398,01321,01314,01309)STEERING COLUMN ELECTRONICS -00002)DOOR ELECTRONICS DRIVER SIDE -01321)CENTRAL MODULE COMFORT SYSTEM -29028)DOOR ELECTRONICS PASSENGER SIDE -01321)TIRE PRESSURE MONITOR -02214,01316)
Expert:  sprinkles08 replied 1 year ago.
I'm a full time tech and at work this morning, I'll get back to you as quickly as I can.
Customer: replied 1 year ago.
Good morning sir
Expert:  sprinkles08 replied 1 year ago.
I'm a full time tech and at work this morning, I'll get back to you as quickly as I can.
Customer: replied 1 year ago.
OK
Expert:  sprinkles08 replied 1 year ago.
Can you see if there is power on the red/green and red white wires at the ABS module?
Customer: replied 1 year ago.
WELCOME
Customer: replied 1 year ago.
sir full 12v
Customer: replied 1 year ago.
are you there
Expert:  sprinkles08 replied 1 year ago.
What is the resistance to ground on the two brown wires?