Question about 2002 Chrysler PT Cruiser

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My pt cruiser will not charge the battery it has new belt new alternator and the pcm was checked and came back fine and there is power to the back of the alternator

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The alternator will have power still coming through but it's the voltage regulator inside the alternator that could be bad. This is pretty much what charges and keeps the battery at charge.

Posted on Jun 05, 2010


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The PT cruiser uses a field signal from the PCM to regulate the voltage. If you are not getting approximately 14 volts at the battery terminals when the engine is running, either:
  1. The replacement alternator is faulty.
  2. The generator field control signal from the PCM is faulty.
  3. The Fusible Link between the alternator and the Starter Motor (which is also the same electrical point as the battery positive terminal is open.
Use the diagram below and check the alternator output at the point labeled "A11 6 BK/GY" If this is 14 volts and there is not 14 volts at the battery terminals, then the Fusible link is bad. If there is no voltage or way less than 15 volts at the alternator, then the alternator or the PCM field signal is bad. Ensure the connector from the PCM is connected properly.


Sep 27, 2015 | 2003 Chrysler PT Cruiser

1 Answer

I have a 2006 Chrysler PT cruiser 2.4L engine, gets a P0562 low voltage code on the TCM and 0700 on PCM/ECM/ECU.

code p0562 refers to system voltage low---or ECM power relay control--open circuit ===causes for both ---wiring---poor connection ---battery--- alternator
and wiring ---ecm relay
If the voltage is low then the ECM relay may be not able to remain closed all the time.
code p0700 refers to transmission control module (TCM) MIL ----malfunction===causes wiring ---- TCM
from the first code --it suggests that the power from the alternator is below requirement and the electronics are malfunction because of it
check all wires and connections are clean and tight
check for good ground wires on the engine and battery terminals are shiny clean and tight
I would suggest a load test on the battery as if it is failing then the charge from the alternator will be going to the battery and starving the electronics
bench test the alternator as it may be the regulator as well
TCM controls the transmission functions

Jul 01, 2015 | 2006 Chrysler PT Cruiser

3 Answers

Why is my battery light on? I have checked alternator and battery both are good error code p068a

Well code 68 usually means there is a problem with the MAP or MAF sensor.
The battery light means the alternator is not charging the battery enough to turn the warning light off. The alternator may be charging, but the extra voltage may not be getting to the battery.

Mar 26, 2015 | 2006 Chrysler PT Cruiser

2 Answers

Why is my battery and engine light still on? We just replaced the ECM PCM in My PT Cruiser 2006.

Try getting a check done on your alternator to make sure it is charging the battery, if your alternator is not charging then your battery light will stay on, hope this helps

Sep 19, 2014 | 2006 Chrysler PT Cruiser

1 Answer

My 2001 PT Cruiser was driving fine then the check engine flashed then stayed on. Within 24 hours while driving it lost power and died. Jumped it got about a mile it died again. We have replaced the...

I would want to know what the trouble codes are in the computer since the check engine light is on.
Those codes would help you or a mechanic know where to start checking.
If the alternator is not charging the battery, and you know for a fact the battery and alternator are ok, the problem could be a fuse or fuseable link wire, or the computer.

Feb 18, 2013 | 2001 Chrysler PT Cruiser

1 Answer

2006 pt cruiser battery light comes on but alternator is fine

I believe the main cause of your confusion is that you are assuming that your charging system consists of only the alternator, the battery, and the battery cables.

Your alternator is controlled by your Powertrain Control Module (PCM) The FIRST STEP in diagnosing this system is scanning the PCM for fault codes. Then the computer data (Battery Input Voltage PID) should be checked to see if the PCM is reading the same voltage that your volt meter is reading at the battery. If you have not done that, then you are shooting yourself in the foot trying to figure it out.

Internally shorted or sulfated batteries is a VERY COMMON cause of these symptoms. Proper testing of the battery (with the correct equipment and techniques) is required to verify if this is the cause of the problem. (computer systems do all kinds of irrational things when they start getting delirious from malnutrition)

May 18, 2012 | 2006 Chrysler PT Cruiser

2 Answers

2002 PT Cruiser would not start.

Did they do a charging system check, check starter and alternator first more details plz and i may be more help.

Mar 08, 2012 | 2002 Chrysler PT Cruiser

1 Answer

My daughter has a 2002 PT Cruiser w/ 2.0 engine. auto/trans non turbo.I'm NOT much on the new cars.It keeps running the battery down or does not charge it.They took it to a garage in this area,which none...

I doubt it is the PCM, though it could be, as the voltage is regulated by the PCM. It could also be the fusible link. There is a way to test, if you have a voltmeter. With the engine running, check the voltage at the alternator terminal. It should be at least 14 volts or more. Also check it at the battery. It should be the same. If lower at the battery, replace the fusible link.
If it's the same at the battery and both are above 14 volts, the charging circuit is probably fine and the problem may be a short in the car. I can send troubleshooting steps for a short if someone is good with electric circuits.
If the voltage is lower than 14 at the alternator terminal, then either the alternator is bad or the PCM is bad, and your mechanic may be right.

Sep 29, 2010 | 2002 Chrysler PT Cruiser

2 Answers

In Dec 08' I purchased a new battery for my PT Cruiser 2001 and had it installed at a leading dealer. Ten months later, I left my car unattended for 7 days while I was on vacation. When I returned, the...

I am assuming that you were checking for battery draw with one terminal disconnected off the battery, and only had 5 milliamps draw , that is probably ok, but
If even once, you only had 12.6 volts across your battery , with the car running, I would suspect a bad alternator. It might be failing under load, and have a bad component in it's rectifier circuit. I know it's a pain, but remove it and have a local auto parts store check it for free, such as Autozone, or similar. They can check it under a load and tell you if it is bad.

Nov 04, 2009 | 2001 Chrysler PT Cruiser

1 Answer

01 pt wont charge replaced alternator original

you have to have power to your altinator,if you dont it will not charge,check the large wire going to your alt if you have no power trace it back, usally it will go to your starter,I hope this helps you?

Oct 03, 2009 | 2001 Chrysler PT Cruiser

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