CIM Vectra C 2008 Z18XER

**dkatsariotis** · 28th December 2018, 07:50

Greetings,

First of all I would like to report my CIM's symptoms and then the solution I found in order to - hopefully - fix this issue.

Everything started when i noticed that after starting the engine, the ESP/TC light kept being on (no other light such as ABS, etc).
Many times i was having the RPM and Speed instruments going to 0 position and then back to normal.

After removing the CIM and re-solder all the connectors and clean them, the issue re-appeared.

In addition, when I was trying to unlock the car using the remote control it seemed to be un synchronized and after switching on the ignition - without pressing any button - it worked normally again.

The solution:

I noticed one day that if i switch on and off the ignition (engine off) one time and then switch on again the ignition and start the engine, the problem wouldn't appear.

I removed again the CIM and change the 2 SMD Aluminum Electrolytic Capacitors on the board.

After the replacement the problem didn't appear again and after 4 weeks everything keeps working as it should.

Hope this fix will help anyone facing similar issues.

Thank you for your time spending to read my post.

**NickT** · 28th December 2018, 12:15

Well done on the fix. Bad capacitors are the majority of faults in all electronic equipment.

**Inovator** · 28th December 2018, 17:14

@dkatsariotis is that UY CIM?

**dkatsariotis** · 28th December 2018, 17:53

Originally Posted by Inovator

@dkatsariotis is that UY CIM?

Yes it is UY. With SAS installed.

**Inovator** · 28th December 2018, 20:06

Hm, this repair sounds quite logic.
Do you have pictures of capacitors or their values?

**dkatsariotis** · 28th December 2018, 20:28

Originally Posted by Inovator

Hm, this repair sounds quite logic.
Do you have pictures of capacitors or their values?

Nope, I am away for the weekend, I will take a look on Sunday and post the values

**Inovator** · 28th December 2018, 20:38

Thank you in advance. My CIM UY throws some comunication errors so I could try your remedy.

**dkatsariotis** · 28th December 2018, 20:49

Originally Posted by Inovator

Thank you in advance. My CIM UY throws some comunication errors so I could try your remedy.

Sure you can give it a try. Keep in mind that I used regular electrolytic capacitors and not SMD as I couldn't find them in local market and international delivery could take some time.

**dkatsariotis** · 30th December 2018, 21:25

So, the first capacitor is 220μF/35v and the second one 47μF/35v

I used the base of the SMD capacitors to hold the regular onesIMG_20181217_113822.jpg