1997 Jeep Grand Cherokee Repair Question
Asked on March 4, 2012
My car just disconnected with scan tools
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
But the engine light sometimes on sometime off
I just installed an new computer but still disconnect with scan tools
Does someone can help
Asked by FuchenAnswer
Replied on March 4, 2012
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.
Replied on March 6, 2012
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
Replied on March 6, 2012
Pin # 4 is ground, ensure it has continuity to body ground.
Check the ground circuits for the engine and computer.
Replied on March 6, 2012
yesterday i checked the DLC but just pin#16 have power the other 7
have no power
Replied on March 7, 2012
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 (+)