Auto mechanic how to use Fcar F3-D diesel diagnostic tool to detection of car trouble

Auto mechanic how to use Fcar F3-D diesel diagnostic tool
to detection of car trouble
In order to diagnose and remove fault, connect Fcar auto scanner to
diagnostic socket of vehicle, as shown in Pic.4-37.It has special
functions as follow, such as engine off-cylinder running, test injection
solenoid valve response time, calibrate and replace injector, take rapid
sample of engine data, user can limitedly alter ECU program etc. under
engine manufacturer restricted working condition or characteristic
parameter.
Maintenance technician can use Fcar scanner to enter ECU memory,
monitor sensor output, read DTC, And also selectively program options that
already exists in system.
1 Read DTC
Different engine manufacturer, the fault code coding system and
interpreter program are different. Such as CAT, Cummins, DETROIT DIESEL,
MACK and VOLVO, the fault that each company engine fault code referred
to is different. SAE CHATS and engine manufacturer worked together to
formulate a standard system about electronic code and its implication,
to encourage the whole industry to
PIicture 4-37
adopt serial data communication system in engine. SAE has drawn up
SAE-J series reference standard, and now has been applied.
●SAE J1587 this standard enable to have” talk “(information
exchange)with car diagnostic tool,trip recorder and vehicle information
management system,electronic instrument display system and satellite
system. In other words, J1587 and J1708 data communication system can
provide data of sensor and engine to other control modules of vehicle.

●SAE J1922 and J1939 these two standards enable ECU to communicate with
other electronically controlled system such as ABS, drive slip control
system(traction control system),to provide data for other electronically
controlled systems. Vehicle communication line connects J1922 and J1939
data control interfaces of ECU to other electronically controlled systems,
J1939 data transmission system adopts CAN communication protocol.
●SAE J1924 is a standard about microcomputer software compatibility,
which enables computer to connect to ECU interface, and explain data
signal from ECU, software installed as terminate and stay resident (TSR).
When use Fcar scanner as shown in Pic. 4-36 to decode DTC saved in
ECU, the DTC and its definition can be displayed. Referring to DTC and
its definition that the scanner displayed, maintenance Technician
gradually locate where the fault is, and find the real cause to fault.
To read DTC, the diagnostic connector must be found firstly and then
connect with diagnostic scanner (as shown in Pic 4-36).As engines and
automakers are different, diagnostic sockets are normally different.
Considering diagnostic socket used by some automakers are not standard
connectors, the diesel version of Fcar car scanner are now equipped with
diagnostic connectors of common vehicle models, but there are still part
of models assembled with different diagnostic connectors because of
different requests of manufacturer. Regarding this aspect, Fcar diesel
version specially equipped with universal jumper box and jumper for those
without suitable diagnostic connector.
4-38 Universal jumper box and needle jumper combination