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Presented by Bob Pattengale
BOSCH TECH 2
1-800-71-TRAIN (1-800-718-7246) OR www.auto-video.com
BAsIC COMPONeNT TesT
Diagnostic Trouble Codes (DTCs)
As a good technician, you always want to scan
for DTCs after any type of major engine repair.
This will either verify the repair and tell you if
there may be other issues still outstanding that
need to be addressed.
In our case, you can see in the screen capture
that we have run a scan and there are 2 DTCs
stored in the PCM.
After viewing both of the DTCs we found that
we had a P0118 eCT sensor Circuit high
voltage and a P1115 eCT sensor Circuit Intermittent high voltage.
knowing that we have these two DTCs we can
go into the basic engine Data section and view
the eCT sensor PID.
The eCT sensor is reading at -38°F. Based on
this and the two DTCs, we can determine that
there is an open somewhere in the eCT circuit.
This could be that we neglected to connect the
eCT sensor to the harness or that a wire has
been damaged.
Upon further inspection, we did find that the
connector to the eCT sensor was not seated
correctly and was causing the fault.
Once we seated the connector to the sensor
correctly, we ran the test again and this time
the eCT sensor reading was 73°F. This
indicates that we have found the problem but
we still need to clear the codes and run the
test again.
