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This is a junkyard battery right? It may be kaput or near so. It might work for a while if the car is driven every day but I'd replace it if in doubt.
 

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2001Volkswagen Passat 1.8T GLS
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Discussion Starter #102
Ya, junkyard status.

I think it's too low of power to be of use, not because it's dead, just too small of an output.
sitting just being cranked I think drained it fully.

Wow this bentley is massive! Comparing the $35.00 Chilton I got, and now this $55.00 bentley, I feel duped on my first purchase
 

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2001Volkswagen Passat 1.8T GLS
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Discussion Starter #103
Update :
I've not been able to get to this, as I'm waiting to purchase a battery. Had mine charged, a dead cell, so it's useless.

Yet after they charged it, I returned it into the engine bay, and I noticed all of my coolant is gone.

I had a full reservoir. I disconnected the wiring harness, and removed the coolant temperature sensor, to replace oring as it was loose. Some coolant escaped, yet not enough to drain the reservoir. There is no evidence on the ground or in the engine bay of a leak.

Any ideas?
 

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2001Volkswagen Passat 1.8T GLS
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Discussion Starter #104 (Edited by Moderator)
Charged my battery, had power, and received the p1602.

I Found a separate article elsewhere saying if the crank sensor goes, it can take the ecu. And I had just replaced the ess the day it doesn't start again.



Lights in the cabin worked. I turned the vehicle off, unplugged the vagcom, and plugged in a generic obd. Just to cross reference. No codes showed, yet the light on the driver side didn't illuminate. The other 2 sections did. Wouldn't come on with a button push either. Cycled the key off, and the lights didn't return on until I had the key out for about 2 minutes looking through the manual. Then all the lights came on.

Checked ecu and everything is connected. Ran a scan
Brand new relay is in so I don't think that is it.
With the cv axle out, I cannot move the vehicle, and very limited workspace on the fuse box.




Chassis Type: 3B - VW Passat B5

Scan: 01,02,03,08,15,16,17,19,35,36,37,46,47,55,56,57,58,75,76,77



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Address 01: Engine Labels: Redir Fail!

Controller: 4B0 906 018 BQ

Component: 1.8L R4/5VT G 0003

Coding: 16551

Shop #: WSC 05315

VCID: 719556C728B1

1 Fault Found:

17072 - ECM Power Relay Load Circuit: (J271): Open Circuit

P0688 - 35-10 - - - Intermittent

Readiness: 0110 1101



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Address 02: Auto Trans Labels: 01V-927-156.LBL

Controller: 3B0 927 156 AA

Component: AG5 01V 1.8l5VT USA 1010

Coding: 00104

Shop #: WSC 00028

VCID: 65BD3297EC79

No fault code found.



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Address 03: ABS Brakes Labels: 8E0-614-111-ASR.LBL

Controller: 3B0 614 111

Component: ABS/ASR 5.3 FRONT D00

Coding: 00021

Shop #: WSC 00028

VCID: D3D97C4F32ED

1 Fault Found:

18256 - Please check DTC Memory of Engine Controller

P1848 - 35-10 - - - Intermittent
 

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Checked ecu and everything is connected. Ran a scan
Brand new relay is in so I don't think that is it.

Chassis Type: 3B - VW Passat B5
Address 01: Engine Labels: Redir Fail!
1 Fault Found:
17072 - ECM Power Relay Load Circuit: (J271): Open Circuit
P0688 - 35-10 - - - Intermittent

Address 03: ABS Brakes Labels: 8E0-614-111-ASR.LBL
Component: ABS/ASR 5.3 FRONT D00
1 Fault Found:
18256 - Please check DTC Memory of Engine Controller
P1848 - 35-10 - - - Intermittent
18256 may be caused by 17072.

17072 is the problem you need to fix first.

Do the tests suggested in post #54, and post the results.
 

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2001Volkswagen Passat 1.8T GLS
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Discussion Starter #106
I'm getting 10.06 on fuse #29 key on acc

Leads me to believe since it's not 12v, the battery doesn't have the juice to properly power a start?

The open circuit was I accidently put the blown fuse back in.
 

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Discussion Starter #107 (Edited)
I'm getting 10.06 on fuse #29 key on acc

Leads me to believe since it's not 12v, the battery doesn't have the juice to properly power a start?

The open circuit was I accidently put the blown fuse back in.
I have my fuel pump cover off, and when I try to crank it, the fuel pump sounds like the wipers when they are out of fluid. A whirrr sound and I smell fuel pretty strong. Not sure if that's due to the cover being open or not.


New multimeter, and #29 sits at 10.05-10.16 on acc. When I crank it drops to 9.45 and goes back up to 10.15
 

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Discussion Starter #110
With key on acc, I turned the lights on, and my battery dropped to 11.95v.

Would this mean possibly my alternator is suspect?

I ask because I listed results from #29 test
 

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Discussion Starter #111
It's not the battery cable. I'm getting 12.45 to the 30 relay.
 

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Has the battery been replaced? The voltage you measure will depend on the load placed on the battery. 12.45V at relay 30 with everything off but 11.95V with the lights on could mean a bad battery, a dis-charged battery or a bad connection/cable.

It's getting hard to follow exactly what has been done. What is the status of the battery now? Is it the one with a bad cell that has been bench charged, a replacement battery that has been bench charged or ??
 

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Discussion Starter #113
I purchased a new battery yesterday. I ceased all the rest of everything. Going through the bentley trying to determine where the issue is.

I'm getting 12.45 to relay 30. So it's getting the appropriate voltage. The issue goes further forward if I'm correct.

Fuse #29 is reading @ 3.34 key out. Cranking, it jums to 4.85
 

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Discussion Starter #115
Replaced the relay, and now...

VCDS-Lite Version: Release 1.2

Thursday, 19 November 2020, 14:35:14.

Control Module Part Number: 4B0 906 018 BQ

Component and/or Version: 1.8L R4/5VT G 0003

Software Coding: 16551

Work Shop Code: WSC 05315

VCID: 719556C728B1

11 Faults Found:

17633 - Fuel Injector for Cylinder 1 (N30): Short to Ground

P1225 - 35-00 - -

17635 - Shareware Version. To Decode all DTCs

P1227 - 35-00 - Please Register/Activate

17636 - Shareware Version. To Decode all DTCs

P1228 - 35-00 - Please Register/Activate

17634 - Fuel Injector for Cylinder 2 (N31): Short to Ground

P1226 - 35-00 - -

17833 - Shareware Version. To Decode all DTCs

P1425 - 35-00 - Please Register/Activate

17955 - Shareware Version. To Decode all DTCs

P1547 - 35-00 - Please Register/Activate

17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground

P1117 - 35-00 - -

17843 - Shareware Version. To Decode all DTCs

P1435 - 35-00 - Please Register/Activate

17829 - Shareware Version. To Decode all DTCs

P1421 - 35-00 - Please Register/Activate

17697 - Boost Pressure Control Valve (N249): Short to Ground

P1289 - 35-00 - -

17949 - Shareware Version. To Decode all DTCs

P1541 - 35-00 - Please Register/Activate
 

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Discussion Starter #116
I had forgotten to replace the fuel pump relay. And after cranking it, after codes were cleared, no more appear. So I'm left to believe it's the fuel pump?

Injectors are firing, I hear them engaging.
 

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Discussion Starter #117
On the fuel pump. So pin 1 and 4 had a current.
Pin 1 and 2 had no current.

Pins 1, 2 4 on fuel pump clip registered currents.
 

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I think there are 2 power pins on the fuel pump connector and 2 that are connected to the fuel gauge. It may just need to be primed so I'd turn the key on and off a few times without cranking to activate the fuel pump until it can get fuel up to the injectors.
 

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Discussion Starter #119
Turned key on and off 15 times. Leaving on for 5-10 seconds. I still hear the fuel pump whirring similar to an empty washer reservoir sound.

Something that happened twice before this whole situation. My car wouldn't start. And when I'd jiggle the ess connector (green connector behind drivers headlight) it would start
 

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It looks like you have a bad connection to the ESS, this would cause the ECU Power Supply Relay fault and prevent starting.
The fuel pump, injectors, and coils all appear to be OK.

If you had done the tests in post #54, this would have been discovered long ago.
 
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