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ECM-6300 and ECM-6B00 2000 V70R [BAD Battery to fusebox supply cable!] EPIC Troubleshooting Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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

Post by abscate » Wed Apr 17, 2019 6:38 pm

ME7 has both a intake air temp and intake pressure valve , problem with either one will limit boost


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

Post by bmdubya1198 » Wed Apr 17, 2019 9:32 pm

Sommerfeldt wrote:
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
I'm going to take a look at the IAT tomorrow to make sure I'm getting a proper reading in VIDA. That IAT and boost pressure sensors are very important for the ECU to monitor boost, and I know ME7 will cut boost if one of these sensors has failed.

I actually made an interesting discovery today... when I look at the upstream O2 sensor reading in Torque, I get nothing. I get a reading from the downstream, but not the upstream. I have a feeling that may be my problem.
However what I find interesting is that no codes are present aside from P1625.

I also checked the ECU A38 to the TCV, all good there. I also checked the resistance in the signal wires to the cluster (B41 and B46) and they are both good too (under 1 ohm). I'm really confused as to why these codes are here. Like I said, I'm going to see if I already mentioned these codes to Hilton, and if not I'll be sure to send him an email.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

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

Post by abscate » Thu Apr 18, 2019 2:54 am

What is VIDA telling you about the front OXS?

I’ll also bet that without closed loop operation boost is inhibited.


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

Post by abscate » Thu Apr 18, 2019 3:01 am

B-dub...

Sometimes Abscate does His best thinking in the morning...

Let’s try clearing codes , disconnecting the turbo valve solenoid completely, starting up , and seeing what codes come up,

:wink:


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

Post by bmdubya1198 » Thu Apr 18, 2019 8:09 am

abscate wrote:
Thu Apr 18, 2019 2:54 am
What is VIDA telling you about the front OXS?

I’ll also bet that without closed loop operation boost is inhibited.
It is, and I noticed some things showing "open loop" in VIDA. Can't remember exactly what, but I noticed that. I'm going to check the front OXS signal in VIDA in a little bit.
abscate wrote:
Thu Apr 18, 2019 3:01 am
B-dub...

Sometimes Abscate does His best thinking in the morning...

Let’s try clearing codes , disconnecting the turbo valve solenoid completely, starting up , and seeing what codes come up,

:wink:
Lol
That's a good idea, I'll try that after checking the the OXS.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

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bmdubya1198
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bmdubya1198

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

Post by bmdubya1198 » Thu Apr 18, 2019 9:15 am

Checked the O2 sensor signals. These look right for a cold start? I'm seeing votlage from both sensors on VIDA, so that's already a plus, but they aren't fluctuating much.
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2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

User avatar
abscate
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Posts: 19223
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abscate

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

Post by abscate » Thu Apr 18, 2019 9:28 am

Sensor 1 should be fluctuating at about 1 Hz over the 0.5V value to go closed loop - looks dead to me.

Sensor 2 should be a constant 0.5V roughly. Looks ok.


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

Post by bmdubya1198 » Thu Apr 18, 2019 9:55 am

That’s what I thought. I might need an O2 sensor.

I also tried unplugging the TCV... the car died immediately after starting and wouldn’t start back up. ECM threw a P0243 code. Cleared it off and plugged it back in and it started right back up. P1625 is still there and comes back every time I run the car after clearing codes.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

User avatar
abscate
MVS Moderator
Posts: 19223
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 230 times
Been thanked: 764 times
Trinidad & Tobago
abscate

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

Post by abscate » Thu Apr 18, 2019 10:11 am

Well, P0243 is right for a disconnected TCV.

P1625 maps to your ECM-6B00, so it looks like something is up with the MIL light circuit.

I think your Open Loop front OXS is probably causing your low boost - Im guessing ME7 inhibits boost in this condition.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

User avatar
bmdubya1198
Posts: 3390
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: '98 V70 GLT
Location: Charlotte, NC
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bmdubya1198

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

Post by bmdubya1198 » Thu Apr 18, 2019 10:40 am

abscate wrote:
Thu Apr 18, 2019 10:11 am
Well, P0243 is right for a disconnected TCV.

P1625 maps to your ECM-6B00, so it looks like something is up with the MIL light circuit.

I think your Open Loop front OXS is probably causing your low boost - Im guessing ME7 inhibits boost in this condition.
From what I understand, that is correct. I'm banking on the front O2S being the issue.


2000 V70R Venetian Red/Charcoal M56 Swapped 191k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 160k
1993 944 Base Beige/Beige 221k
1992 Miata Mariner Blue/Black 146k
Sold-
1998 V70 GLT Black/Beige 193k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k- Never should have sold it


Need used parts? PM me!

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