Can't start van after dashcam install - help please!!!

[Grey Area]

Hi y'all.

Well - shite. Asking for help here as the van is stuck where it should not be!! It's a 2017 T6 102ps panel van.

I did a simple hardwire install of a dashcam today. When I went to start the van afterwards, it turned over a few times and then was dead. Ignition now does nothing. No lights on dash. MFD does show doors are open and interior lights are working when doors open.

I have checked all the fuses I can think on on the fuseboard by the gear stick - all seem fine. 5A BCM okay (swapped out just to be sure) ... bigger ones for ignition also seem fine.

I have tried disconnecting the battery and then touching pos and negative cables together.

I didn't disconnect the battery when doing the work - probably should have.

In the install process I removed a TomTom that was behind the glovebox - this was just wired to the fusebox IGN and 12V+ with standard aftermarket push in pigtail things - so it seems highly unlikely this is the cause. (van used to belong to a big company).

I also tidied up the remaining loom that had connected a Trimble tracker. The tracker itself was removed weeks ago with no issues. The remaining loom was a OBD pigtail interface which had allowed the tracker to splice itself into OBD to monitor the vehicle while providing a second OBD port for diagnostics. I removed this - leaving the original OBD port. The only thing I changed was to remove a single fused cable which ran from the tracker loom and spliced to a very thin cable on the headlight angle adjuster control. I assume this was to monitor ignition status. I have put the loom back the way it was and reconnected that single cable, but this hasn't changed anything.

It seems unlikely that I somehow triggered the immobiliser by removing this cable (which wasn't connected to a device)!?

If there is anyone out there in the cold reading this that has a suggestion, please do make it - the van really shouldn't be where it is come morning!

My next move is to check the relevant fuse locations for voltage before going to the main board under the battery. Not sure what to look for there.

VCDS says the instrument cluster is not communicating and immobiliser has stopped engine starting. Have I somehow shorted a fuse to the cluster?

Many thankyous for any help


I get this from VCDS:

4 Faults Found:
25577 - Engine Start Blocked by Immobilizer
P1570 00 [10100011] - -
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 204699 km
Date: 2092.01.26
Time: 16:49:45

Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 3 °C
Intake air temperature: -5 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 11.562 V
Unlearning counter according OBD: 40
Immobilizer Snapshot 001 Byte 1: 14
Immobilizer Snapshot 001 Byte 2: 00
Immobilizer Snapshot 001 Byte 3: 0A
Immobilizer Snapshot 001 Byte 4: 03
Immobilizer Snapshot 001 Byte 5: 10
Immobilizer Snapshot 001 Byte 6: 00
Immobilizer Snapshot 002 Byte 1: 00
Immobilizer Snapshot 002 Byte 2: 00
Immobilizer Snapshot 002 Byte 3: 00
Immobilizer Snapshot 002 Byte 4: 00
Immobilizer Snapshot 002 Byte 5: 00
Immobilizer Snapshot 002 Byte 6: 00
Immobilizer Snapshot 004 Byte 1: 00
Immobilizer Snapshot 004 Byte 2: 00
Immobilizer Snapshot 004 Byte 3: 00

25809 - Power Steering Control Module
U101D 00 [00100011] - No Communication
[Power steering control moduleNo communication]
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 16
Mileage: 0 km
Date: 2092.01.26
Time: 15:25:35

Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 3 °C
Intake air temperature: -5 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 11.601 V
Unlearning counter according OBD: 40
Accelerator pedal travel: raw value: 0.00 %
CAN status - engine control module: 0
Cruise Control System (CCS): status: main switch off
selected gear: Shifting process active

25810 - No Communication with Instrument Cluster
U0155 00 [00100011] - -
[Lost Communication WithInstrument Panel Cluster (IPC) Control Module]
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 16
Mileage: 204699 km
Date: 2092.01.26
Time: 15:25:55

Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 3 °C
Intake air temperature: -5 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 11.898 V
Unlearning counter according OBD: 40
Accelerator pedal travel: raw value: 0.00 %
CAN status - engine control module: 0
Cruise Control System (CCS): status: main switch off
selected gear: Shifting process active

25811 - No Communications with HVAC Control Module (J301)
U0164 00 [00100011] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 16
Mileage: 204699 km
Date: 2092.01.26
Time: 15:25:54

Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 3 °C
Intake air temperature: -5 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 11.898 V
Unlearning counter according OBD: 40
Accelerator pedal travel: raw value: 0.00 %
CAN status - engine control module: 0
Cruise Control System (CCS): status: main switch off
selected gear: Shifting process active

 

[Dellmassive]

I'd you sign up as a VIP member you can download all the fuse charts.

Then compare your fuse layout with the stock image.

I'd imagine you have a fuse in the writing position.

Or a blown fuse.

..

Post some pics of your install and write connections.

 

[manfrotto]

I assume you replaced the original fuses when you removed the piggyback fuses, (and in the correct slots)?

 

[DXX]

Did you take a photo of the fuse panel before you started work? It’s very easy to put a fuse back in the wrong slot and also easy to get the fuse out of line and miss the conductor.

 

[spacewalker]

Kl15 for cluster is missing

 

[Grey Area]

Kl15 for cluster is missing

It could be couldn’t it - haven’t found that on the diagram though. Wish they had a map

 

[spacewalker]

If cluster wake up over door open = Kl 30 and GND is ok
if cluster NOT wake up over ignition = no KL15 - that is why Engine say - immo active - because no cluster (fuse or relay)

 

[Grey Area]

I assume you replaced the original fuses when you removed the piggyback fuses, (and in the correct slots)?

Assumptions are dangerous - I didn’t realise this is how they work! How embarrassing!

 

[Grey Area]

If cluster wake up over door open = Kl 30 and GND is ok
if cluster NOT wake up over ignition = no KL15 - that is why Engine say - immo active - because no cluster (fuse or relay)

Well done - and thank you.

 

[Grey Area]

Did you take a photo of the fuse panel before you started work? It’s very easy to put a fuse back in the wrong slot and also easy to get the fuse out of line and miss the conductor.

I will be doing this in the future, won’t I!

 

[manfrotto]

So all good and working again now?

 

[Grey Area]

All working now - thanks everyone for muppet support duty!!

The weird thing though - there were already pigtails from a different device. All I did was swap them out.

I didn’t touch anything else there! I checked all the fuses after the problem began. That’s why I guessed it was the OBD loom that had caused the issue.

The instrument cluster fuse seems to be the top left of the board - I repeated the problem by pulling it. You can’t even get a pigtail in that position due to the edges of the board being in the way.

So I’m unclear on how this happened.

Perhaps I nudged the fuse or something… most odd.

Happy new year all.