Glow plug module NO output voltage power

Hello guys I need some directions as to fixing my glow plug problem. It’s a 2007 European sprinter 4 injector nozzles OM646 engine history of this problemI wanted to replace all 4 glow plugs as I had code for two. I was only able to replace 2,3,4, as glow plug 1 would not come out.I believe this is where the genesis of my starting problem started from (went from no start to long crank time) the current problem is I do not have power coming out from the 4 pins of the glow plug module, I do not have power also at the connectors of the glow plug themselves, and I’m not getting any DTC for the module nor for the 3 newly changed glow plugsI have constant 12v power at the red wire connected to the module. The other connector on the module are brown and blue wires. The blue wire with engine off ignition on is jumping around 10v,8v,9v,7vWith ignition on the glow plug light on dashboard cones on and goes off immediately. Before now it would stay on for about 30secs-2mins or so before going off when engine was fully warmed.An electrician said the module was bad and to prove that he used a regular relay to bypass the module and the test light LIT at the glow plug connectors.I have bought a brand new glow plug module and a used one. Installed the brand new module and same problem of no voltage coming out of the 4pins  how do I fix this problem sirs I have constant 12v from the battery to the GPCMI have a good ground on the brown wire The blue wire is where the confusion is With key on engine off the test light is not lighting, but voltage jumps from 10v -7v back and forth using a digital voltmeter Looks like this blue wire is glow plug module CONTROL WIRE, and I think it goes into the SAM module close to the main fuse box under the steering.Hope I can get some help with all the information supplied so far  The 3 pin connector has only two wires (brown and blue wires), the 3rd pin is empty  is the blue wire ignition power wire or a LIN BUS wire why do they design the glow plug module to have three pins and there are only two wires going to the 3 pins the used GPCM I bought also has three pins inside the module and the connector it came with has just two wires (brown and blue)My sprinter is a bad boy with too many electrical issues, otherwise it’s a rugged vehicle

I may be able to help if i can correctly identify the vehicle. Can you post the vin umber?

Thanks Bryan your help would be really appreciated 

WDB9061351N307239

Nordic region sprinter 2.2L engine 

 

Also 

is there a chance some of the electrical troubles I’m having on this truck can be traced to the SAM module . That bulky device at the fuse box

the diagram attached is the wiring diagram of ABS and it looks like the brake or stop lamp switch is controlled to open and close by a wire from the BCM or SAM. My brake light on the dashboard doesn’t go off and this is causing ABS not to function and also probably the cause of the accelerator pedal DTC
Kindly look at this wiring diagram and help me tie all of these together (Brake light on the dashboard and glow plug control module no voltage)

im bringing up this SAM module at the fuse box because when my inner light failed, I did the unplug and plug connector at the SAM and it started working fine ever since 

the wiring diagrams were randomly lifted online from a dodge sprinter though, but I guess they all mostly share some wiring commonalities 

I will be more than happy if the help I will get from you will fix both the glow plug module problem, the brake light staying on on the dashboard and the APPS DTC 

Kindly help out on this guys 

 

Let me start by saying I avoid Euro cars like the plague and that goes double for diesel. But I think you are connecting dots that don't fall in a row and that is going to make it hard for even Super Star Bryan Pollock (all love!) to help.
You started asking about a glow plug problem and brought in a brake lamp issue, an abs issue and an accelerator pedal position issue.
One of the hardest disciplines of diagnostics is learning to pick a path and walk it to the end. Keep focused on the glowplug module, and if some how the abs issue is related, it will be resolved at the end of the path.
Hope to see you get this one nailed down soon!

Thanks Noah
i will focus on the glow plug module and see if fixing that will address other issues.
 

The dodge sprinter wiring diagram for the Glow Plug Module shows 
1. A ground wire 
2. A Lin bus wire coming from a generator and ECM
3. A black and dark green wire coming from the crankcase vent heater control fused asd relay output 
I cannot see that thick red wire HOT at all time 12v

my Glow Plug Module has 
thick red wire HOT at all time 12v
blue LIN bus wire 
brown ground wire 

@Bryan kindly help with the wiring diagram for my vehicle model

i really want to solve this glow plug module fault as fast as possible 

thanks everyone 

I cant decode that vin. Looking at Dodge Sprinter , 2007 doesn't have a 2.2? Maybe its a Euro thing.

Hello guys

My Glow plug module seem to be missing ignition power. No idea where the ignition wire fits into the module. There are 3 pins but only two are used 

anyone familiar with this GPM

I’m thinking of buying a different module that has a place for the ignition power and then connect a wire to any 20amps fuse with ignition power, then the vehicle LIN bus and ground wires 

will this work 

Help is still needed guys 

Glow plug Module not giving any output voltages 

how do I solve this 

I really wish I could help you. My service information will not decode that vin. The sprinters in America don't have that engine in 2007 and the glow plug module diagram is different.
If you can post the appropriate glow plug module diagram (the bottom 2 wires are cut off the screen shot in your first post) or connector pin out, someone may be able to determine what is missing , but I have no resources for that information.