Above are the information we could obtain from this vehicle .
I checked on the scan tool but there were no fault codes recorded .
4. I disconnected the engine coolant temperature sensor.Checked on the scan again. now i found the fault code and recorded in the chart below.
Find What Data Has Changed
5.1 Look through the scan tool data to see what PIDs
(Parameter Identification of system voltages) have changed.
Which readings don’t make sense or don’t read what you
would expect. Concentrate on the PIDs related to the codes.
5.2 Record the PIDs that have changed below
Visual Inspection to find fault
6.1 Do a visual inspection under the hood to find where the
problem is. Use information from the code to know where to
look for the problem and what type of problem to look for.
Describe problem you found
Yes , the Coolant Temperature senor is disconnected.
Repair fault
7.1 Plug back in the connector, or repair problem found
7.2 Describe what you did
Reconnected the the senor
6.1 Do a visual inspection under the hood to find where the
problem is. Use information from the code to know where to
look for the problem and what type of problem to look for.
Describe problem you found
Yes , the Coolant Temperature senor is disconnected.
Repair fault
7.1 Plug back in the connector, or repair problem found
7.2 Describe what you did
Reconnected the the senor
Recheck Data PIDs
8.1 Recheck the data with the scan tool
8.2 Record the voltages for the PIDs related to the problem, to
confirm they are back to normal
9 Clear Codes
Describe what you did to clear codes:
I cleared the faults code po11 which is the coolant temperature sensor, also the coolant fan referred to normal on/off position automatically where it was full time on when the coolant temperature was disconnected.
Describe what you did to clear codes:
I cleared the faults code po11 which is the coolant temperature sensor, also the coolant fan referred to normal on/off position automatically where it was full time on when the coolant temperature was disconnected.
Recheck the system for any faults and none were recorded.
Live data is very useful also easiest ways to find a problem specially if there is no fault codes recorded . It is a good way to check the performance of the vehicle under different conditions where some faults could be hiding.
Parameters are also important because how would we know if this data we are getting is within the manufacturer specs. we have to compare the live data with the parameters to make sure that they are within the parameteres that is concidered normal for this vehicle .
Scan tool is very helpful to find the problem, it can point us in the direction we need to be looking ... it might not point where the problem is but its a good start for direction and even if the sensor is faulty after checking the circuit for bad connections , bad earth ... by comparing the live reading against the parameters.
Parameters are also important because how would we know if this data we are getting is within the manufacturer specs. we have to compare the live data with the parameters to make sure that they are within the parameteres that is concidered normal for this vehicle .
Scan tool is very helpful to find the problem, it can point us in the direction we need to be looking ... it might not point where the problem is but its a good start for direction and even if the sensor is faulty after checking the circuit for bad connections , bad earth ... by comparing the live reading against the parameters.
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