How do you check if a pcm is working?
Nov 26, 2012 at 2:28 PM
1998 Chrysler Cirrus You Check PCM Working
1998 CHRYSLER CIRRUS
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JDL
- ✓ASE Certified Mechanic
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What's the problem, any applicable trouble codes? Can you communicate with computer? You can check for reference voltage at any sensor that uses a ref voltage, to see if computer will do anything. You can check voltage and grounds for the computer.
Nov 26, 2012 at 2:49 PM
I dont know what the problem is my car stoped charging i was told it was the regulator in the pcm so i changed the pcm before it would run untill the battery died now with a diffrent pcm it would run for about 3 seconds then die like it lost fire it done that a few times but now wont runn at all
Nov 26, 2012 at 4:20 PM
JDL
- ✓ASE Certified Mechanic
- 16,098 POSTS
Is the pcm compatible with vehicle? If this is a new pcm, I believe the dealership will have to program computer.
If it cranks good but won't start, have a helper crank it, while you visually check for spark at the plugs. Anything?
What about security system?
If it cranks good but won't start, have a helper crank it, while you visually check for spark at the plugs. Anything?
What about security system?
Nov 26, 2012 at 4:29 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.