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2007 VOLVO VNL ISX HAS ACTIVE CODE 0547, 0187, 0123, 2374.

Customer Question
2007 VOLVO VNL ISX...

2007 VOLVO VNL ISX HAS ACTIVE CODE 0547, 0187, 0123, 2374

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

2007 VOLVO VNL WITH ISX

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

IM DOING MY SELF AND I REPLACE ALL THE GSKET CLAMP BUT DONT HAVE POWER SPECIALLY WHEN I TRY TO PULL A TRAILER

Submitted: 4 months ago.Category: Medium and Heavy Trucks
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Answered in 1 hour by:
3/12/2018
Technician: Andy, Truck Diagnostic Technician replied 4 months ago
Andy
Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1,962
Experience: International and Isuzu trucks , International, Maxxforce, Cummins and Isuzu engines, Diagnostic and electrical troubleshooting specialist , Hvac and truck /trailer refrigeration troubleshooter
Verified

Hi there . My name is ***** ***** Can we start with the engine serial number please ?

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Customer reply replied 4 months ago
79137585
Technician: Andy, Truck Diagnostic Technician replied 4 months ago

Hi there . sorry for the delay but I had family matters to attend to . Thanks for the serial number .

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Technician: Andy, Truck Diagnostic Technician replied 4 months ago

We need to troubleshoot the 187 fault . This fault will fix the other ones .

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Technician: Andy, Truck Diagnostic Technician replied 4 months ago

You need to carefully insect the engine sensor harness for signs of harness rubbing somewhere and shorting out . This is causing all the other sensor codes to show up

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Customer reply replied 4 months ago
Do you have a diagram to where I can see
Technician: Andy, Truck Diagnostic Technician replied 4 months ago
I can try and track one down for you later today after work if needed yes . Basically , the ECM is mounted on the driver's side of engine near the front at the top by valve cover and has three connectors . The one we want to follow to inspect wiring is the large connector that has red on it same as the engine . The harness is also painted red . If you follow that harness and carefully inspect for runout inch per inch, you will likely find its rubbed out somewhere . The exhaust back pressure sensor is high up on the right side of the engine towards the front next to the valve cover and is a 3-wire sensor with a rubber cover on it. The intake manifold pressure sensor is a three or four wire sensor on the left side of the engine just behind the ECM about a foot back at the same height.
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Technician: Andy, Truck Diagnostic Technician replied 4 months ago
I will try to get back to you with a wiring diagram later today if that's okay
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Customer reply replied 4 months ago
please thank you
Technician: Andy, Truck Diagnostic Technician replied 4 months ago

Hi there. Just got home from work . Any luck ? I will look up wiring if needed .

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Customer reply replied 4 months ago
I checking on the wire but there a lot diegram I think it will help
Technician: Andy, Truck Diagnostic Technician replied 4 months ago

I am looking up now .

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Technician: Andy, Truck Diagnostic Technician replied 4 months ago
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Technician: Andy, Truck Diagnostic Technician replied 4 months ago
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Technician: Andy, Truck Diagnostic Technician replied 4 months ago

Hi there. Looking for an update on this please!

Thanks

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Customer reply replied 4 months ago
Im still checking on the wire cant find nothing yet and the cable cast about $950 at Volvo
Technician: Andy, Truck Diagnostic Technician replied 4 months ago

have you done some pin point testing to know exactly which wire is the problem ? If you know where wire goes to , you could run an overlay !

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Customer reply replied 4 months ago
What you recommend for for pin pointing
Technician: Andy, Truck Diagnostic Technician replied 4 months ago

I would look again and see which fault is active along with 187 . If it is exhaust back pressure sensor , then pull wiring out of loom between the ecm engine side harness connector and the exhaust back pressure sensor an tug on the wiring til the weak spot breaks away .

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Technician: Andy, Truck Diagnostic Technician replied 3 months ago

Hi there . I am looking for an update please. Perhaps a phone call would help get all the details.

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Customer reply replied 3 months ago
What time can I call you tomorrow
Technician: Andy, Truck Diagnostic Technician replied 3 months ago
I work days but can help in the evening after work
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Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
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Experience: International and Isuzu trucks , International, Maxxforce, Cummins and Isuzu engines, Diagnostic and electrical troubleshooting specialist , Hvac and truck /trailer refrigeration troubleshooter

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