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Thursday, July 12, 2012

Electrical Issues on Chrysler

Digital Odometer will not start when car is started & Car turns off Suddenly while driving.

Electrical issues on 1997 Chrysler Cirrus

  • ISSUE 1) WHY DIGITAL ODOMETER TAKES TIME TO START?
It will start once the car is driven for few minutes.

  • ISSUE 2) WHY CAR SHUTS OFF/QUITS INTERMITTENTLY IN BETWEEN DRIVING?
No driving problems like stalling,surging,jerks,hesitation noticed.

HOW TO START TROUBLESHOOTING THIS PROBLEMS?

First of all see if the check engine light is coming ON dash and remaining ON dash.If its just coming up on dash while you turn on the key to start and goes away,then its not the issue.But if check engine light comes up and remains ON or it keeps flashing then its error code stored in engine computer module.The Module has to be scanned for codes.

HOW TO RETRIEVE ERROR CODES/

The error codes can be retrieved by OBD II scan tool.But there is simple procedure to retrieve error codes manually with out using or need of OBD II scan tool.

OK,HOW TO RETRIEVE ERROR CODES MANUALLY?

The procedure is simple.The details are as follows;
Keep the pen paper ready to note down the codes.The error codes will be displayed on your odometer display.
  1. Cycle the ignition key from off to on three times ending with it on( the sequence is off-on-off-on-off-on) and watch for the check engine light to flash codes. 
  2. Just do off  TO on ,don't crank the starter.Otherwise it will not show codes.
  3. After the last time you turn the key on the engine light will come on and then go out. 
  4. After a pause it will come back and start flashing. 
  5. It will flash max up to nine times and then pause. 
  6. Properly and quickly without mistake count the flashes between the longer pauses, this is a code digit.
  7. For example it flashes 3 times then pauses and then again flashes 2 times then error code is 32. 
  8. Write down all digits that you see and post them here in order.


OK. Procedure was easy and simple.GOT CODES 12 AND 55?

This both error codes are nothing to worry codes.
Error code 12 means the battery has been disconnected.
And error code  55 means end of test.

OK,THEN WHY I AM GETTING THESE PROBLEMS?

The odometer problem is internal in the instrument cluster, seen lots on these cars. It's often caused by cracked solder joints on the cluster's circuit board. 
To trace the problem remove the cluster, remove the circuit board and go over the solder joints with a magnifying glass and look for any that are cracked. Carefully resoldering cracked joints will normally repair the problem without having to replace the circuit board.But if you are not able to locate the loose soldering,then you will have to get the cluster board repaired.Yes repairing is possible and many professional repair shops deal with cluster board repairing to take care of odometer and speedometer not working issues.Buying a new cluster board will be costly issue and getting it repaired will be good option.It will save good amount of cash.There are some stores which provides some guarantee in repair jobs also.So i suggest first inspect the board yourself and try re-soldering if you locate the bad soldering.But if that's not possible then get the board repaired.

OK,AND WHY CAR SHUTS OFF INTERMITTENTLY?

There are few possible causes that can lead to this problem.
Mostly it sets code and you should receive the error code.But if the manual procedure is not giving you error code then you need to use scan tool.Use this tool will monitor the data while the problem is happening.
It will provide some data to be followed.

But without that tool also you can manually inspect the possible parts that can cause this problem.

Now first see how your vehicle looses power.
Is the vehicle dying abruptly that tells us you are losing spark. A loss of fuel would cause a hesitation and lack of power as it dies. 

But as you mentioned that vehicle suddenly dies while driving and no other driving issue noticed.
Then this clears that fuel pump and low fuel pressure or dirty fuel filter is not the issue.

So your main attention is spark related issue.
That is what causing the problem.


WHAT ARE POSSIBLE CAUSE FOR SPARK LOOSING PROBLEM?

Possible causes of lost spark would be the crank sensor, cam sensor, coil, ASD relay, wiring, and the powertrain control module (PCM). Most would normally set a code but not always.

GIVE MORE DETAIL ABOUT EACH POSSIBILITY,SO I CAN START TROUBLESHOOTING?

Ok,i will explain easy possibly with complete detail.

CRANK SENSOR:
In most of such cases the crank sensor is the culprit.

CRANKSENSOR LOCATION ON CHRYSLER:
The crank sensor goes down into the transmission bellhousing at about the 2:00 position as viewed over the left fender.

CRANKSENSOR OPERATION ON CHRYSLER:
It reads off a tone wheel on the flexplate to tell the PCM where the crank is in it's rotation, and is the main input needed for spark. 

IF CRANK SENSOR STOPS OPERATING THEN,
If the crank sensor signal is lost for a fraction of a second it will cause the engine to die, but could restart immediately. The crank sensor is your most likely cause.

==================

If crank sensor checks ok,then other possibility is  faulty cam sensor

CAM SENSOR LOCATION:

Cam sensor is located inside the distributor.This runs off the rear bank camshaft. The cam sensor is also needed for spark and could be momentarily dropping signal.Same as Crank sensor.

COIL PROBLEM:

Like cam sensor coil is also in the distributor. Normally with a bad coil it wouldn't give symptoms like you are having though. If either the coil or cam sensor were bad the distributor would need to be replaced.New distributor comes with coil and cam sensor included inbuilt as a kit.

FAULTY ASD RELAY:

The ASD relay powers the injectors and coil, if the ASD feed was lost because of a wiring problem or bad relay then it would die, but should set a code. 
But still on some cases the relay will get faulty and no code will be set.So to confirm the issue.Swap ASD relay with another working relay.And see if that helps.

FAULTY PCM( PowerTrain Control Module):

In many cases its seen that PCM turns of  momentarily and isn't storing a code because memory is lost each time. 
TO CONFIRM PCM PROBLEM:

Set error code in  PCM and see if it erases during the event. To set error code in PCM manually.Try this simple procedure.
  • Start the engine and unplug any sensor on the engine and turn the engine light on purposely. 
  • Plug it back in and then drive the car. 
  • After it dies and you get it started again, see if there is still a fault code stored besides the 12 and 55. 
  • If there is then know that PCM is operating.
Otherwise you know PCM is faulty and it has to be replaced.

But as per your problem described i think its mostly crank sensor or issue with cam sensor.


These details will help.
Thanks.


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