Page 1655 - Foton Workshop Manual - Auman EST-M

Electrical system –circuit EL - 231

System description: IN

Battery power supply
The power supply is applied through the fuse F\L5 in the vehicle frame fuse box and the fuse F20 in the DI
instrument panel fuse box, to the pin 20 of the plug & socket connector B076 of the tachograph, to provide
battery power supply for the tachograph module to function properly.
EG
Ignition switch power supply

Put the ignition switch into the ACC or ON position, the current flows through the fuse F35 in the instrument
TR
panel fuse box, to the tachograph pin 19 of the plug & socket connector B076, to provide battery power

supply for the tachograph module to function properly.
AX
Tachograph record

The tachograph module accepts all system signals, such as vehicle speed signal, steering signal, brake signal
FR
and illumination status signal and so on, record the vehicle speed in emergency, illumination information and
so on according to the tachograph internal settings and store them in the IC memory card of tachograph for
reference by the persons concerned in the accident. The SOS emergency warning switch is used for distress ST
call.
Maintenance Precautions BR
● B076, B078 tachograph module

B076(19)- earth: when the ignition switch is at ACC/ON position, the voltage is about 24V. BW
B076(20)- earth: the voltage is about 24V.
B076(9)-grounding: always breakover EL

B076(10)-grounding: always breakover
B078(2)- grounding: always breakover
● B045 SOS emergency warning switch

Press switch, pins 1 - 2 is activitated.
: Part position

Number Refer to harness Number Refer to harness

F101 Frame harness B078 Body harness

B045 Body harness B100 Body harness

B076 Body harness

: Connector between harnesses

Number Number Refer to harness (connector position)

Body harness and frame harness (instrument panel
B021 F008
left lower, close to the clutch pedal)

: Grounding

Number Grounding point position

B067 Body right side ground Point 2

EL-231