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Old 11-19-2012, 07:59 PM   #1 (permalink)
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Default IMA light

This may be in an old post, but I haven't found it yet so please forgive me.
2001 Insight w/CVT. Each morning the car starts fine, "Chg" goes to 3 bars and within 5 seconds the IMA light comes on, Battery goes to no bars. I have cleaned the grounds, charged the 12V battery and tested it after a day or two (shows 12.6 volts). DTC consistently comes up 1568. I recently bought the car in PA and drove it back to MS with no problems (about 1200 miles). Started acting up the day after we arrived home.

Suggestions before I get out the manual and do some extensive diagnostics? Thanks.
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Old 11-20-2012, 03:49 AM   #2 (permalink)
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Look up your P1568 DTC here and you'll see that there are 3 reasons why this DTC could be set. So you'll need to read the blink codes to determine which problem you have. The DTC spreadsheet referenced above outlines some diagnostic steps to help figure out the solution to the problem.

In your case, there might be an electrical problem in the battery pack temperature monitoring system. This could be due to an intermittent connection or damage to a wiring harness (e.g., rodents).
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Old 11-20-2012, 07:58 PM   #3 (permalink)
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Thanks Art. The diagram was very useful. I jumpered the DTC plug and pulled a lot more codes than my OBDII scanner did. Here are the ones for the IMA: 66 and 12. The question is what next?

I started checking the mice issue, since I have smelled a faint odor at times (though it may be the cabin filter, which was extracted today and was filthy). Tomorrow I will remove the battery pack cover and look for damage. So far there is no damage that I can see under the hood or dash. I already cleaned the ground cables and battery terminals, so I should be good to go there.

Further suggestions welcome. Again, thanks in advance.
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Old 11-23-2012, 07:35 PM   #4 (permalink)
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UPDATE: IMA light is off (with nothing changed other than a float charge to the 12V over the Turkey Day holiday). Is it possible that even though the 12V load tests 'good', it is still marginal and causes the DTC 1568 (66) fault?

I have the diagnostic to check out the BCM for this fault, but now hestitate to disturb anything.
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Old 11-23-2012, 11:17 PM   #5 (permalink)
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Everything hinges on the 12V battery being at a good state of charge. After charging a 12V battery. Take a voltage reading after about two hours of sitting, not right after it is charged.

My suggestion.
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Old 11-24-2012, 09:01 AM   #6 (permalink)
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Thanks Willie. Is there a preferred, or acceptable limit to the voltage from the 12V? I had about 12.6 volts after 1 day of sitting, and 13.2 volts upon restart. I ordered a digital voltmeter (cigarette plug-in) to monitor in the future, but it would be nice to now what I want to achieve.
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Old 11-24-2012, 12:45 PM   #7 (permalink)
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Those figures sound about right.

Willie
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01 MT "Little Red Rocket"
The first "TURBOCHARGED" Hybrid, Insight G1-(01/2003)@65K miles. RIP 334K
MaxIMA Battery (Serial #2), on 8/25/12 @ 301K miles
Use: 343K mi. @ 58.0 LMPG


http://www.insightcentral.net/forums...d-insight.html
http://www.seattleeva.org/wiki/User:...ies_Red_Rocket
http://autos.groups.yahoo.com/group/.../message/12630
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