Troubleshooting Help Wanted(Needed)
07-09-2024, 06:37 PM
#1
Newbie
Thread Starter
Join Date: Apr 2024
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
2007 GL450
Troubleshooting Help Wanted(Needed)
Folks, I am struggling.
Backstory, purchased an 07 gl450 with a bad engine. Purchased a replacement engine and did some preping/maintenance stuff there. Got it put back in enough to where I wanted to try and turn the engine over. New batteries, radiator not installed in car yet. Turn the key, nothing happens in any position. Fuel pump doesn't kick on, starter does not turn or click.
Next, I jumped the pins to confirm the starter functions. It does. Next, I jumped the pins for the fuel pump to confirm it functions. It does.
Next, I pull codes to begin to try and understand next steps.(youcanic scanner, Like it so far.)
Codes:
ME9.7:
P2176- Preeform throttle valve adaptation
P0607- voltage supply of component motor electronics/battery voltage too low for ADC
P2505- The voltage at relay circuit 87 is too low
No CAN signal from control unit traction systems
P2158-implausible CAN signal from vehicle speed at front axle
P0102- open circuit/short circuit to ground or to positive
P0101- MAF sensor is too high
EIS:
Pass, no faults.
Then, based on what I could find on the internet in regard to the above information along with the symptoms I had. I decided to send out my ecu and have it repaired. They deemed it a non economical repair. So I purchased an ECU, EIS, and matching Key set from a 2010 GL450.
Today, with these items swapped over. I was able to recreate all of my symptoms and pull codes again. I know the vin is coded to the ecu and EIS, but figure that if I use a matching set all should be well? Perhaps the model year difference is enough to cause its own problems.
Codes:
ME9.7
No CAN message was received from control unit traction systems
P2158
P2176
P0607
P2505
EIS:
Undervoltage supply
Terminal 30 NOT PRESENT
Okay, with all that said. Anyone have some experience with issues such as those above. Any insight would be great.
Thanks,
Backstory, purchased an 07 gl450 with a bad engine. Purchased a replacement engine and did some preping/maintenance stuff there. Got it put back in enough to where I wanted to try and turn the engine over. New batteries, radiator not installed in car yet. Turn the key, nothing happens in any position. Fuel pump doesn't kick on, starter does not turn or click.
Next, I jumped the pins to confirm the starter functions. It does. Next, I jumped the pins for the fuel pump to confirm it functions. It does.
Next, I pull codes to begin to try and understand next steps.(youcanic scanner, Like it so far.)
Codes:
ME9.7:
P2176- Preeform throttle valve adaptation
P0607- voltage supply of component motor electronics/battery voltage too low for ADC
P2505- The voltage at relay circuit 87 is too low
No CAN signal from control unit traction systems
P2158-implausible CAN signal from vehicle speed at front axle
P0102- open circuit/short circuit to ground or to positive
P0101- MAF sensor is too high
EIS:
Pass, no faults.
Then, based on what I could find on the internet in regard to the above information along with the symptoms I had. I decided to send out my ecu and have it repaired. They deemed it a non economical repair. So I purchased an ECU, EIS, and matching Key set from a 2010 GL450.
Today, with these items swapped over. I was able to recreate all of my symptoms and pull codes again. I know the vin is coded to the ecu and EIS, but figure that if I use a matching set all should be well? Perhaps the model year difference is enough to cause its own problems.
Codes:
ME9.7
No CAN message was received from control unit traction systems
P2158
P2176
P0607
P2505
EIS:
Undervoltage supply
Terminal 30 NOT PRESENT
Okay, with all that said. Anyone have some experience with issues such as those above. Any insight would be great.
Thanks,
07-09-2024, 08:06 PM
#2
Senior Member
engine swap
Folks, I am struggling.
Backstory, purchased an 07 gl450 with a bad engine. Purchased a replacement engine and did some preping/maintenance stuff there. Got it put back in enough to where I wanted to try and turn the engine over. New batteries, radiator not installed in car yet. Turn the key, nothing happens in any position. Fuel pump doesn't kick on, starter does not turn or click.
Next, I jumped the pins to confirm the starter functions. It does. Next, I jumped the pins for the fuel pump to confirm it functions. It does.
Next, I pull codes to begin to try and understand next steps.(youcanic scanner, Like it so far.)
Codes:
ME9.7:
P2176- Preeform throttle valve adaptation
P0607- voltage supply of component motor electronics/battery voltage too low for ADC
P2505- The voltage at relay circuit 87 is too low
No CAN signal from control unit traction systems
P2158-implausible CAN signal from vehicle speed at front axle
P0102- open circuit/short circuit to ground or to positive
P0101- MAF sensor is too high
EIS:
Pass, no faults.
Then, based on what I could find on the internet in regard to the above information along with the symptoms I had. I decided to send out my ecu and have it repaired. They deemed it a non economical repair. So I purchased an ECU, EIS, and matching Key set from a 2010 GL450.
Today, with these items swapped over. I was able to recreate all of my symptoms and pull codes again. I know the vin is coded to the ecu and EIS, but figure that if I use a matching set all should be well? Perhaps the model year difference is enough to cause its own problems.
Codes:
ME9.7
No CAN message was received from control unit traction systems
P2158
P2176
P0607
P2505
EIS:
Undervoltage supply
Terminal 30 NOT PRESENT
Okay, with all that said. Anyone have some experience with issues such as those above. Any insight would be great.
Thanks,
Backstory, purchased an 07 gl450 with a bad engine. Purchased a replacement engine and did some preping/maintenance stuff there. Got it put back in enough to where I wanted to try and turn the engine over. New batteries, radiator not installed in car yet. Turn the key, nothing happens in any position. Fuel pump doesn't kick on, starter does not turn or click.
Next, I jumped the pins to confirm the starter functions. It does. Next, I jumped the pins for the fuel pump to confirm it functions. It does.
Next, I pull codes to begin to try and understand next steps.(youcanic scanner, Like it so far.)
Codes:
ME9.7:
P2176- Preeform throttle valve adaptation
P0607- voltage supply of component motor electronics/battery voltage too low for ADC
P2505- The voltage at relay circuit 87 is too low
No CAN signal from control unit traction systems
P2158-implausible CAN signal from vehicle speed at front axle
P0102- open circuit/short circuit to ground or to positive
P0101- MAF sensor is too high
EIS:
Pass, no faults.
Then, based on what I could find on the internet in regard to the above information along with the symptoms I had. I decided to send out my ecu and have it repaired. They deemed it a non economical repair. So I purchased an ECU, EIS, and matching Key set from a 2010 GL450.
Today, with these items swapped over. I was able to recreate all of my symptoms and pull codes again. I know the vin is coded to the ecu and EIS, but figure that if I use a matching set all should be well? Perhaps the model year difference is enough to cause its own problems.
Codes:
ME9.7
No CAN message was received from control unit traction systems
P2158
P2176
P0607
P2505
EIS:
Undervoltage supply
Terminal 30 NOT PRESENT
Okay, with all that said. Anyone have some experience with issues such as those above. Any insight would be great.
Thanks,
07-10-2024, 06:31 AM
#3
Ground strap?
Edit: P0102- open circuit/short circuit to ground or to positive
Just a guess because they are so random and systems really unrelated to each other.
Either that or an electrical plug is in the wrong connector or not connected?
Edit: P0102- open circuit/short circuit to ground or to positive
Just a guess because they are so random and systems really unrelated to each other.
Either that or an electrical plug is in the wrong connector or not connected?
Last edited by GL500 x164; 07-10-2024 at 06:33 AM.
07-10-2024, 09:52 PM
#4
Junior Member
Takes a brave soul to attempt anything as big as an engine swap in any relatively modern MB. Anyone else miss the days they just made good cars instead of rolling computers with security paranoia?
07-10-2024, 11:15 PM
#5
MBWorld Fanatic!
I’d recommmend that for a project of this magnitude you ditch the you can scanner and get a proper MBStar compatible system.
You’ll be programming VINs and doing off-line coding on a number of control units to make it all talk together.
That’s completely aside from the possibility that one or more of them aren’t plugged in or have bad grounds, as evidenced by some of the codes you’ve pulled up. That is a lot of work for an 07.
You’ll be programming VINs and doing off-line coding on a number of control units to make it all talk together.
That’s completely aside from the possibility that one or more of them aren’t plugged in or have bad grounds, as evidenced by some of the codes you’ve pulled up. That is a lot of work for an 07.
The following users liked this post:
vesiadog (07-11-2024)
