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MY CAR JUST DISCONNECTED WITH SCAN TOOLS
1997 Jeep Grand Cherokee
March, 4, 2012 AT 7:03 AM
My jeep drives good. Everthing works good.
But the engine light sometimes on sometime off
I just installed an new computer but still disconnect with scan tools
Does someone can help
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March, 4, 2012 AT 7:50 AM
If you cannot communicate with the ECM, it could be a fault with the power supply to the DLC. Ensure you have battery voltage at pin # 16.
March, 6, 2012 AT 9:16 AM
Thank u for helping me?I just checked the DLC the pin#16 is working but still disconnect with scan tools can u please help me again thanks
March, 6, 2012 AT 12:53 PM
Pin # 4 is ground, ensure it has continuity to body ground.
Check the ground circuits for the engine and computer.
March, 6, 2012 AT 6:30 PM
Yesterday I checked the DLC but just pin#16 have power the other 7
have no power
March, 7, 2012 AT 12:20 PM
Which engine do you have?
What did you use to check the DLC? You must only use a DVOM to test.
Pin # 16 has battery voltage.
Pin # 4 is body ground, you would not gat any power there.
Pin # 3 is CCB (+)
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