Cranks, no start. Help?

[gmudan]

Hi guys, my 1.8t b6 just died after rolling out from a stop sign, wouldn't start back up. Left it overnight, tried it again and it ran for 1/2 a second then died. Checked the fuel pump relay, fuel pump is fine too i can hear it priming. I tried pulling out the spark plugs, attached them to the coil packs and turned it over. Couldn't see any spark jumping from the valve cover to the spark plugs. Whats weird is when i have the ignition on, the fans run for 2 seconds, then die down, start back up, die, then start stop start stop for 1/2 a second. I scanned the car and got these
Before all this i replace the crank sensor to rule that out. Any idea why i dont get spark? Checked all the fuses and they are good.

Thursday,07,January,2016,12:22:05:50717
VCDS Version: Release 15.7.3 Running on Windows XP x86
www.Ross-Tech.com

                Address 01: Engine       Labels: 06B-909-518-AMB.lbl
Control Module Part Number: 8E0 909 518 BC    HW: 8E0 909 018 A
  Component and/or Version: 1.8L R4/5VT     G   0003
           Software Coding: 0016711
            Work Shop Code: WSC 88641 551 633322
                      VCID: 72E014956E693CAE77-513C
10 Faults Found:

17633 - Fuel Injector for Cylinder 1 (N30) 
            P1225 - 002 - Short to Ground
17635 - Fuel Injector for Cylinder 3 (N32) 
            P1227 - 002 - Short to Ground
17636 - Fuel Injector for Cylinder 4 (N33) 
            P1228 - 002 - Short to Ground
17634 - Fuel Injector for Cylinder 2 (N31) 
            P1226 - 002 - Short to Ground
17833 - EVAP Purge Valve (N80) 
            P1425 - 002 - Short to Ground
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2 
            P1117 - 002 - Short to Ground
17843 - Secondary Air Pump Relay (J299) 
            P1435 - 002 - Short to Ground
17829 - Secondary Air Injection Solenoid Valve (N112) 
            P1421 - 002 - Short to Ground
17697 - Boost Pressure Control Valve (N249) 
            P1289 - 002 - Short to Ground
17522 - Oxygen (Lambda) Sensor; B1 S2 
            P1114 - 002 - Internal Resistance too High

Readiness: 0110 1100

VCDS Version: Release 15.7.3 Running on Windows XP x86
Data version: 20151216
www.Ross-Tech.com

Thursday,07,January,2016,12:33:52:50717

Chassis Type: 8E (8E - Audi A4/S4/RS4 B6/B7 (2001 > 2008))
Scan: 01 02 03 08 09 0F 11 15 16 17 18 25 36 37 45 46 55 56 57 65
          67 69 75 76 77
 
VIN: WAULC68E25A121795   Mileage: 167620km-104154miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06B-909-518-AMB.lbl
   Part No SW: 8E0 909 518 BC    HW: 8E0 909 018 A
   Component: 1.8L R4/5VT     G   0003  
   Coding: 0016711
   Shop #: WSC 88641 551 633322
   VCID: 72E014956E693CAE77-513C

No fault code found.
Readiness: 0110 1100

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 8E0-614-517.lbl
   Part No: 8E0 614 517 A
   Component: ABS/ESP allrad      4529  
   Coding: 04275
   Shop #: WSC 06435  
   VCID: 264838C5C221100E2B-5120

2 Faults Found:
01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30 
            35-00 -  - 
18258 - Powertrain Data Bus 
            P1850 - 35-00 - Missing Message from ECU

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8E0-820-043.lbl
   Part No: 8E0 820 043 AD
   Component:   A4 Klimaautomat   1424  
   Coding: 00000
   Shop #: WSC 06335  
   VCID: 63CE61D1F193A5260C-513C

5 Faults Found:
01274 - Air Flow Flap Positioning Motor (V71) 
            41-10 - Blocked or No Voltage - Intermittent
00532 - Supply Voltage B+ 
            52-10 - Supply Voltage Too High - Intermittent
00532 - Supply Voltage B+ 
            53-10 - Supply Voltage Too Low - Intermittent
01206 - Signal for Duration of Ignition Off Time 
            27-00 - Implausible Signal
01336 - Company Data Bus for Comfort System 
            80-00 - Single-Wire Operation

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 8E0-907-279-8E2.lbl
   Part No: 8E0 907 279 F
   Component: int. Lastmodul  KAN 0517  
   Coding: 01014
   Shop #: WSC 06335  
   VCID: 356AEF890F876B9692-4B00

3 Faults Found:
02105 - Supply Voltage for Light Detection Sensor 
            57-00 - Electric Circuit Failure
02104 - Light Detection Sensor (G399) 
            30-10 - Open or Short to Plus - Intermittent
01312 - Powertrain Data Bus 
            79-10 - Please Check Fault Codes - Intermittent

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8E0-959-655-84.lbl
   Part No: 8E0 959 655 K
   Component: Airbag 8.4EP        1001  
   Coding: 0010607
   Shop #: WSC 06335 000 00000
   VCID: 3F868DA16DBBA1C648-513C

1 Fault Found:
00532 - Supply Voltage B+ 
            002 - Lower Limit Exceeded - Intermittent

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8E0-953-549.lbl
   Part No: 8E0 953 549 N
   Component: Lenksáulenmodul     0611  
   Coding: 01041
   Shop #: WSC 06335  
   VCID: 3E78F0A53AB1A8CE43-4B00

1 Fault Found:
00532 - Supply Voltage B+ 
            53-10 - Supply Voltage Too Low - Intermittent

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8E0-920-9xx-8E2.lbl
   Part No: 8E0 920 900 N
   Component: KOMBI+WEGFAHRS. RB4 D42  
   Coding: 01331
   Shop #: WSC 94753  
   VCID: 2F66DDE1EDDB5146D8-515A
   WAULC68E25A121795     AUZ6Z0D0348851

4 Faults Found:
00562 - Sensor for Oil Level/Temperature (G266) 
            27-00 - Implausible Signal
00668 - Supply Voltage Terminal 30 
            53-10 - Supply Voltage Too Low - Intermittent
01314 - Engine Control Module 
            49-10 - No Communications - Intermittent
01316 - ABS Control Module 
            49-10 - No Communications - Intermittent

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 8E0-959-433-MAX.lbl
   Part No: 8E0 959 433 BB
   Component: Komfortgerát T7B    1612  
   Coding: 11880
   Shop #: WSC 06335  
   VCID: 72E014953E693CAE77-4B18

   Subsystem 1 - Part No: 8E1959801
   Component: Tõrsteuer.FS BRM 0205  

   Subsystem 2 - Part No: 8E1959802E
   Component: Tõrsteuer.BF BRM 0205  

   Subsystem 3 - Part No: 8E0959801A
   Component: Tõrsteuer.HL BRM 0205  

   Subsystem 4 - Part No: 8E0959802A
   Component: Tõrsteuer.HR BRM 0205  

14 Faults Found:
01330 - Central Control Module for Central Convenience (J393) 
            53-10 - Supply Voltage Too Low - Intermittent
00962 - Alarm via. Tilt Sensor 
            35-00 -  - 
01368 - Alarm triggered by Luggage Compartment Switch 
            35-00 -  - 
01369 - Alarm triggered by Hood Switch 
            35-00 -  - 
01374 - Alarm triggered by Terminal 15 
            35-00 -  - 
01371 - Alarm triggered by Door Contact Switch; Driver's Side 
            35-00 -  - 
01573 - Alarm triggered by Door Contact Switch; Rear Left 
            35-00 -  - 
00932 - Electric Window Motor; Drivers Side (V147) 
            62-10 - No or Incorrect Adjustment - Intermittent
01705 - Selection Switch for Mirror-Adjust (E48) 
            27-10 - Implausible Signal - Intermittent
01331 - Door Control Module; Driver Side (J386) 
            52-10 - Supply Voltage Too High - Intermittent
01332 - Door Control Module; Passenger Side (J387) 
            53-10 - Supply Voltage Too Low - Intermittent
01333 - Door Control Module; Rear Left (J388) 
            52-10 - Supply Voltage Too High - Intermittent
01562 - Rear right door 
            59-10 - Can't Unlock - Intermittent
01334 - Door Control Module; Rear Right (J389) 
            53-10 - Supply Voltage Too Low - Intermittent

End-------------------------(Elapsed Time: 06:23)--------------------------

I tried a engine test on vag com, first time it failed at N80 purge valve, and now it says "Requirement for output test not met"
Cleared those codes and nothing came back after i tried cranking.

[eljay]

How old is the battery? Weird stuff starts to happen when it's on its last breath.

[gmudan]

How old is the battery? Weird stuff starts to happen when it's on its last breath.

Battery is fine, have a charger on it for now to diagnose it so its always 12.5v.
Changed all 4 cool packs too.

[ozMatt]

have you had a ton of rain in the last few days? almost sounds like water in the ECU box shorting everything out. Maybe check there.

[gmudan]

have you had a ton of rain in the last few days? almost sounds like water in the ECU box shorting everything out. Maybe check there.

I'll check, cross my fingers that not it.

[gmudan]

Just checked the ecu box. Dry as a bone. Anyone know how to check relay 219? It'll take me a few days to find a new one, rather try to test this one and see if it's ok.

[gmudan]

Checked relay 219 and 373. Both click and under 0.03 ohm resistance.

[ozMatt]

the first lot of faults show injector short to ground - have you checked the wires on the injector plug connectors? these can crack/corrode just like the coilpack harness.

Also, you may have blown fuse, i think the ECM fuse is #29.

[gmudan]

the first lot of faults show injector short to ground - have you checked the wires on the injector plug connectors? these can crack/corrode just like the coilpack harness.

Also, you may have blown fuse, i think the ECM fuse is #29.

I'll check those first thing tomorrow morning. And I checked 29 fuse is fine.
Thanks for the suggestion, keep them coming!

[customa4]

the first lot of faults show injector short to ground - have you checked the wires on the injector plug connectors? these can crack/corrode just like the coilpack harness.

Also, you may have blown fuse, i think the ECM fuse is #29.

I'm guessing this also. Test all of the engine management fuses(I think there's 4)with a multimeter/12v test light.

Fuse are 29, 32, 34 and maybe 43

[ozMatt]

np. I also saw in another thread you mentioned your fuel pump going out - did you get this replaced and if so, are you confident is has been installed correctly? You may need to also check the fuel pump fuse and relay.

[SJorge3442]

I'm no 1.8 expert, but those fuel injectors shorts worry me. If they truly are faulty, then clearly that can cause this issue, but we all know that other issues can cause faults such as that. What about the crank position sensor? Is that something that could cause these sorts of issues? If thats not getting a good reading, then strange things can happen.

[gmudan]

np. I also saw in another thread you mentioned your fuel pump going out - did you get this replaced and if so, are you confident is has been installed correctly? You may need to also check the fuel pump fuse and relay.

I can hear fuel pump priming and checked the relay, all good. Also there's fuel in there's pressure building up in the fuel rail when turning the ignition on.

[gmudan]

I'm no 1.8 expert, but those fuel injectors shorts worry me. If they truly are faulty, then clearly that can cause this issue, but we all know that other issues can cause faults such as that. What about the crank position sensor? Is that something that could cause these sorts of issues? If thats not getting a good reading, then strange things can happen.

I replaced the crank position sensor this morning. Thanks for the suggestion, I will trace the fuel injector wiring and see if any things bad.

[old guy]

I hate to even suggest this but.........

Remove the upper cover to the timing belt and check to see if the belt is intact.

[crazyquik22023]

As stated check fuses especially #34. Also check the ground cable connection behind the expansion tank for looseness or corrosion.

[gmudan]

Good news and bad news. Replaced relay 395, cleaned up the ground screws on the valve cover and behind the expansion tank and it fired right up. Bad news is I'm a idiot for not checking them first.
Edit: swapped old 395 fuse in at it started. Guess it was a bad ground this whole time.
Thanks crazyquick

[old guy]

Fixing the ground wire makes sense. The relay would keep it from cranking at all.

[gmudan]

Fixing the ground wire makes sense. The relay would keep it from cranking at all.

True. Thanks guys, now I'm gonna try to add a thicker ground wire to prevent this from happening again.

[crazyquik22023]

True. Thanks guys, now I'm gonna try to add a thicker ground wire to prevent this from happening again.

Adding a thicker wire wouldn't hurt, but most of the time the issue seems to be corrosion or the nut just working itself loose over time. Glad you got it running though.