Immobilizer question Topic is solved

[subzerocarfanatic]

Search for document TP3938202 in the Google Clouds..

TP3938202 is for the 1999 C70. TP3943202 is for the 2000 - 2004 C70.

My C70 was manufactured in May of 99 yet shows to be a 2000, why is that? Is that when something changed, I always thought the latter part of the year made it a 200 not that early ( may). No matter. I found wiring diagrams online, I have a headache already from looking trying to find and figure it all out. lol

[RickHaleParker]

My C70 was manufactured in May of 99 yet shows to be a 2000, why is that?

Mystery solved: So that there will be more cash flowing during the Christmas season. That way merchants and manufacturers of other products can sell more and have more.

"In the 1930s, FDR signed an executive order that dictated automakers release their new vehicles in the fall of the preceding calendar year “as a means of facilitating regularization of employment in the [automotive] industry.” Auto assembly-line workers are typically idled during a new-model changeover, and the president reasoned that if their idle period were to happen earlier in the fall, autoworkers would be able to maintain employment through the holiday season and would thus be able to spend more."

Economies run on cash flow not profits. That is why Trickle-down economic does not work. A healthy economy needs a healthy cash flow not a trickle.

[subzerocarfanatic]

My C70 was manufactured in May of 99 yet shows to be a 2000, why is that?

Mystery solved: So that there will be more cash flowing during the Christmas season. That way merchants and manufacturers of other products can sell more and have more.

"In the 1930s, FDR signed an executive order that dictated automakers release their new vehicles in the fall of the preceding calendar year “as a means of facilitating regularization of employment in the [automotive] industry.” Auto assembly-line workers are typically idled during a new-model changeover, and the president reasoned that if their idle period were to happen earlier in the fall, autoworkers would be able to maintain employment through the holiday season and would thus be able to spend more."

Economies run on cash flow not profits. That is why Trickle-down economic does not work. A healthy economy needs a healthy cash flow not a trickle.

I might end up taking it to a Volvo shop, did not want to because it is about a 4 hour round trip to the nearest one . I was really hoping I could figure it out but I am still learning on the wiring schematics in some areas. and there are a ton of wires under the dash who knows what could be causing the no start unless fuse is pulled issue.
Well that is very interesting, I did not know that. I learned something new today. Now if I can just figure out my problem be it electrical short software ECM problem etc. Thanks for sharing the story, really interesting.

[abscate]

A may 1999 build would be a 1999 model year. The new model starts in September

Can you post up your door jamb sticker and emissions sticker? Be interested to see for what year emissions it is certified

[scot850]

Fortunately I now have 2 dealerships near me (less than 10km away). I had an issue that baffled me and our friends on here. I swapped out stacks of parts and could for the life of me and with the help of guys like abscate, Rick and others pinpoint the issue. I struck lucky in that one of the dealerships had recently opened and the mechanics were on fixed guaranteed pay and with time on their hands while business built up.

I dropped the car off and the service guys only charged me an hour for their work and eventually found the issue was with the instrument cluster (CDM). Fortunately I was able to fix the issue myself but it took the pros to find the area which I was unlikely to figure out as there was no logic to why one thing caused another until you understand how all the parts are interlinked.

Good luck with this and hopefully turns out to be a simple diagnostic and fix.

Neil.

[subzerocarfanatic]

A may 1999 build would be a 1999 model year. The new model starts in September

Can you post up your door jamb sticker and emissions sticker? Be interested to see for what year emissions it is certified

Yeah sure , no problem.

[subzerocarfanatic]

Fortunately I now have 2 dealerships near me (less than 10km away). I had an issue that baffled me and our friends on here. I swapped out stacks of parts and could for the life of me and with the help of guys like abscate, Rick and others pinpoint the issue. I struck lucky in that one of the dealerships had recently opened and the mechanics were on fixed guaranteed pay and with time on their hands while business built up.

I dropped the car off and the service guys only charged me an hour for their work and eventually found the issue was with the instrument cluster (CDM). Fortunately I was able to fix the issue myself but it took the pros to find the area which I was unlikely to figure out as there was no logic to why one thing caused another until you understand how all the parts are interlinked.

Good luck with this and hopefully turns out to be a simple diagnostic and fix.

Neil.

I wish I had a Volvo shop closer, even though I have always tried to do all repairs myself I know when I am in over my head, a part of me keeps pushing on and trying but a part of me says just take it to Volvo. I know, abscate has been one of the most helpful persons on here amongst others always helping, I have resolved countless issues because of this forum and the help it provides for a garage DIY er like myself. Maybe I should take it in I just really hate not being able to figure it out, I have the VIDA Dice, I have a PowerProbe ECT3000 for finding open or short circuits which I am still learning to use so I do have some helpful tools. I know I probably ask simple or common sense questions sometimes but I am doing the best I can and determined with your guys help.

[abscate]

Jeepers creepers…now which. Wiring diagram applies, a 1999 or 2000?
I did a dive into the lock control module 2/76 for you.

( I keep calling it light control module but it’s correct name is lock control module. )

The ECU sends the crank enable on pin B22, and it grounds the starter relay through a board mount relay in 2/76 connected to pin B21. This is for 99 cars but I doubt this changed on your 99 1/2


I’ll look for info on CDM 000D

On edit,I knew this one sounded familiar. I’ll try to pull Alex into your thread

He fought a series of wiring faults on a 2000 that triggered faulty CEL lights, CDM-000D, and other malaise back in 2019

From swede speed: https://www.swedespeed.com/threads/susp ... do.599677/

[RickHaleParker]

I’ll look for info on CDM 000D

CDM (Can and Driver Information Module) AKA DIM. CDM-000D = DIM-000D.
If you look at his screenshot there are no control modules labeled CDM. It is probably a clerical error in the VIDA database.
The CDM/DIM on the 2000 C70 also serves as the CEM.

Its is a communication problem with the ECM. Pull the ECM and clean the connectors before you throw big money at it. Do the same for the connectors to the DIM also. Inspect for defects on the PCBs as you go. Check CAN buses for shorts.

Could be a module interfering with the CAN communication. Pulling the fuse resets it. What is on Fuse #15?


ME7 Network Communications.

ME7_Network.gif (13.72 KiB) Viewed 1009 times

DIM-000D Communication engine control module (ECM). Faulty signal. Permanent fault

Condition
Diagnostic trouble code (DTC) DIM-000D is stored if a fault in the engine control module (ECM) software is detected.

Substitute value
None.

Possible source
Fault in engine control module (ECM) software.

Fault symptoms
None.

[abscate]

I’m thinking you need a CANBUS sniffer or get someone with that tool to look at the traffic on the signals between DIM and ECU