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ECM-6300 and ECM-6B00 2000 V70R

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ECM-6300 and ECM-6B00 2000 V70R

Post by bmdubya1198 » Tue Apr 16, 2019 6:04 pm

I've got some strange codes, and I just can't figure out what's wrong here. The code descriptions are as follows...

ECM-6300 ETS warning lamp. Signal too low. Intermittent fault.
ECM-6B00 Malfunction Indicator Lamp (MIL). Signal too low. Intermittent fault.

I'm trying to diagnose a low-boost issue, and this is the next piece of the puzzle that I want to solve. I tested the signal wires (pink wire and brown/white wire on connector 24/13D (red connector on yellow block under steering wheel)) for short to ground, and they both show approximately 26 ohms to ground. However, if I disconnect it from the cluster, it goes open circuit. That's the only place I can find a ground. Otherwise, the wires appear to be in tact. I moved around the harness in several places, and the values do not change. Based on that, I'm going to assume the wiring is fine.

I also checked the resistance between the two wires, and when the cluster is connected, it also shows about 26 ohms. Open circuit when disconnected. I check the same thing on my cousin's '99, and his car showed the same resistance between the wires, so I assume the cluster is good. He also had resistance to ground on those two wires, however it was much higher (anywhere from 65 ohms to 600. I know, big range but that's what I saw and his car is running perfectly).

Couple questions here... one, will this cause my boost to be low? And two, how the heck do I fix this? I've never been totally stumped by a car before, this is a first. I've hit a dead end. There are no resources for this particular problem on VIDA, online, forums, nothing. And I've done as much as I can with tracing a wiring fault.


1998 V70 GLT Black/Beige 191k
2000 V70R Venetian Red/Black M56 Swapped 187k
2007 XC90 V8 AWD Sport Titanium Grey/Black 150k
1998 S90- Silver/Gray 207k
1995 850 Tropic Green/Gray "129k"
1988 744 Turbo M46 Beige Metallic/Beige 188k- Still kicking myself for getting rid of this one

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by Sommerfeldt » Wed Apr 17, 2019 4:59 am

Just have it out there, I suck at electrical stuff. :D
That said, the Swedish listings for 6300 lists a whole slew of possibilities, all the way down to "battery voltage", meaning faulty signal.

As for the other one, are you sure it's "ECM-6B00"? If it's ECM-6800 (i.e. six-eight-zero-zero), then that's likely your boost problem.

SE listings for ECM-6800 are the following:
Turboreglerventil (Turbo control valve)
Turboreglerventil. För hög signal (TCV Too high signal)
Turboreglerventil. För hög signal. Intermittent fel (TCV Too high signal. Intermittent error)
Turboreglerventil. För hög signal. Intermittent fel.
Turboreglerventil. För hög signal. Permanent fel (TCV Too high signal. Permanent error)
Turboreglerventil. För hög signal. Permanent fel.
Turboreglerventil. För låg signal (låg = low)
Turboreglerventil. För låg signal. Intermittent fel
Turboreglerventil. För låg signal. Intermittent fel.
Turboreglerventil. För låg signal. Permanent fel
Turboreglerventil. För låg signal. Permanent fel.
Turboreglerventil. Signal saknas (TCV Signal missing)
Turboreglerventil. Signal saknas. Intermittent fel
Turboreglerventil. Signal saknas. Intermittent fel.
Turboreglerventil. Signal saknas. Permanent fel
Turboreglerventil. Signal saknas. Permanent fel.
VNT-regulator
VNT-regulator. För hög signal
VNT-regulator. För låg signal

(Translations added by me :) )

- S


'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by abscate » Wed Apr 17, 2019 7:12 am

As for the other one, are you sure it's "ECM-6B00"? If it's ECM-6800 (i.e. six-eight-zero-zero), then that's likely your boost problem.
I think someone owes Somm about 8 hours of his life...

:D :D :D


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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by bmdubya1198 » Wed Apr 17, 2019 8:05 am

Sommerfeldt wrote:
Wed Apr 17, 2019 4:59 am
Just have it out there, I suck at electrical stuff. :D
That said, the Swedish listings for 6300 lists a whole slew of possibilities, all the way down to "battery voltage", meaning faulty signal.

As for the other one, are you sure it's "ECM-6B00"? If it's ECM-6800 (i.e. six-eight-zero-zero), then that's likely your boost problem.

SE listings for ECM-6800 are the following:
Turboreglerventil (Turbo control valve)
Turboreglerventil. För hög signal (TCV Too high signal)
Turboreglerventil. För hög signal. Intermittent fel (TCV Too high signal. Intermittent error)
Turboreglerventil. För hög signal. Intermittent fel.
Turboreglerventil. För hög signal. Permanent fel (TCV Too high signal. Permanent error)
Turboreglerventil. För hög signal. Permanent fel.
Turboreglerventil. För låg signal (låg = low)
Turboreglerventil. För låg signal. Intermittent fel
Turboreglerventil. För låg signal. Intermittent fel.
Turboreglerventil. För låg signal. Permanent fel
Turboreglerventil. För låg signal. Permanent fel.
Turboreglerventil. Signal saknas (TCV Signal missing)
Turboreglerventil. Signal saknas. Intermittent fel
Turboreglerventil. Signal saknas. Intermittent fel.
Turboreglerventil. Signal saknas. Permanent fel
Turboreglerventil. Signal saknas. Permanent fel.
VNT-regulator
VNT-regulator. För hög signal
VNT-regulator. För låg signal

(Translations added by me :) )

- S
I'm definitely going to double check all my grounds then if it could possibly be voltage related. As for the 6B00, it's definitely 6B00. I wish it was 6800, that would really make this boost issue easier to diagnose!

I was advised by a member on Volvospeed to check the resistance in those two wires between the cluster and ECU. I'll probably check that anyway, but I am pretty sure the wires are in good shape.
abscate wrote:
Wed Apr 17, 2019 7:12 am
As for the other one, are you sure it's "ECM-6B00"? If it's ECM-6800 (i.e. six-eight-zero-zero), then that's likely your boost problem.
I think someone owes Somm about 8 hours of his life...

:D :D :D
I wish it was that easy! I finally heard back from Rob Hilton though, he said the logs look like the TCV is trying to open but the boost isn't increasing. He suggested trying another TCV. I'll have to try this again and see if anything changed. Wouldn't that be great!

Then my car can give me back all the weeks I've spent trying to get it to make full boost!


1998 V70 GLT Black/Beige 191k
2000 V70R Venetian Red/Black M56 Swapped 187k
2007 XC90 V8 AWD Sport Titanium Grey/Black 150k
1998 S90- Silver/Gray 207k
1995 850 Tropic Green/Gray "129k"
1988 744 Turbo M46 Beige Metallic/Beige 188k- Still kicking myself for getting rid of this one

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by Sommerfeldt » Wed Apr 17, 2019 8:32 am

abscate wrote:
Wed Apr 17, 2019 7:12 am
I think someone owes Somm about 8 hours of his life...

:D :D :D
:lol:

Well, the 6B00 is weird. It's supposed to be there whenever there's anything with the MIL light, apparently. If there's a signal problem, the code should be there, if the lamp's out it should be there and if the light is on, that code should be there. Another weirdness is that there's two different names quoted for the light that this pertains to;

ECM-6B00 MIL-lampa
ECM-6B00 Miljölampa signal

So "MIL lamp", or "Environment lamp". SE doesn't use "MIL" as an abbreviation for "miljö", so the two names are distinctly different. Should be the same one though.

Hopefully the new TCV works, and it's just Volvo Weirdness. :)

- S


'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by abscate » Wed Apr 17, 2019 8:44 am

How are you reading that code, BMDUB?

I bet your reader is mapping the code incorrectly to ECM-6B00. Its common for third party readers to have crap in their code maps.

It could be really esoteric and your code map in you ECM is wrong, too. Have you had a tune done?


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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by bmdubya1198 » Wed Apr 17, 2019 12:40 pm

Sommerfeldt wrote:
Wed Apr 17, 2019 8:32 am
:lol:

Well, the 6B00 is weird. It's supposed to be there whenever there's anything with the MIL light, apparently. If there's a signal problem, the code should be there, if the lamp's out it should be there and if the light is on, that code should be there. Another weirdness is that there's two different names quoted for the light that this pertains to;

ECM-6B00 MIL-lampa
ECM-6B00 Miljölampa signal

So "MIL lamp", or "Environment lamp". SE doesn't use "MIL" as an abbreviation for "miljö", so the two names are distinctly different. Should be the same one though.

Hopefully the new TCV works, and it's just Volvo Weirdness. :)

- S
Hmm... now that is strange. I'm going to double check my OBD2 codes again with Torque, since the only codes I had on there were related to the outside temp sensor (gone now since I plugged the sensor back in) and P1625, which seems to be the generic version of 6B00. My CEL/MIL is not currently lit, however I can manually activate it in VIDA. Maybe the codes are just there since I have two codes for the brake sensor and clutch sensor?
abscate wrote:
Wed Apr 17, 2019 8:44 am
How are you reading that code, BMDUB?

I bet your reader is mapping the code incorrectly to ECM-6B00. Its common for third party readers to have crap in their code maps.

It could be really esoteric and your code map in you ECM is wrong, too. Have you had a tune done?
I got the code from VIDA, so I would assume it's accurate. I have a stage 1 tune from Hilton. Maybe the codes are there because of the tune? I can't remember if I included that in an email to Hilton, but I'll be sure to bring it up.


1998 V70 GLT Black/Beige 191k
2000 V70R Venetian Red/Black M56 Swapped 187k
2007 XC90 V8 AWD Sport Titanium Grey/Black 150k
1998 S90- Silver/Gray 207k
1995 850 Tropic Green/Gray "129k"
1988 744 Turbo M46 Beige Metallic/Beige 188k- Still kicking myself for getting rid of this one

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by abscate » Wed Apr 17, 2019 12:49 pm

The E6800 too low intermittant fault trace plan...

Check cables between engine control module (ECM) # A38 (# A38) and turbocharger (TC) control valve # 2 for an intermittent short-circuit to ground according to See: Related Tests, Information and Procedures\Checking Wiring and Terminals\Checking Wiring and Terminals. Intermittent Faults\Short-Circuit to Ground, Intermittent Faults


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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by bmdubya1198 » Wed Apr 17, 2019 12:52 pm

I'll give that a check when I test the wires going to the cluster later.


1998 V70 GLT Black/Beige 191k
2000 V70R Venetian Red/Black M56 Swapped 187k
2007 XC90 V8 AWD Sport Titanium Grey/Black 150k
1998 S90- Silver/Gray 207k
1995 850 Tropic Green/Gray "129k"
1988 744 Turbo M46 Beige Metallic/Beige 188k- Still kicking myself for getting rid of this one

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Re: ECM-6300 and ECM-6B00 2000 V70R

Post by Sommerfeldt » Wed Apr 17, 2019 5:28 pm

Just a random thought, but I know ME7 references the IAT quite a bit even for boost requests - is yours up to par? Might be BS but anything is worth investigating, I suppose.

- S


'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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