Page 2239 - Workshop Manual - Tunland (2017)

WIRING - SYSTEM CIRCUIT DIAGRAM 71-39

Description:

The diesel engine management system mainly consists of three parts: sensor signal
input, electronic control module and actuator control.

• Signal Input
Signals are transmitted from pin 39 of the ECM to pin 4 of the clutch switch
connector. When the clutch pedal is depressed, signals are sent from pin 3 to pin
29 of the ECM after the clutch switch contact closes, thus providing the clutch
switch signal.

Signals are transmitted from pin 52 of the ECM to pin 3 of the clutch switch
connector. When the clutch pedal is depressed, signals are sent from pin 4 to pin
29 of the ECM after the brake lamp switch contact closes, thus providing the brake
lamp switch signal.
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• Accelerator pedal position sensor
The accelerator pedal position sensor detects positions of the accelerator pedal.
It will transmit the varying information amount to the ECM instantly when detecting
that the accelerator pedal position is changed. Then, the ECM will calculate and
process the information and use it as one of basic signals for adjusting fuel injection
volume.
Installation position: at the accelerator pedal.

: connectors between wiring harnesses

Ref. wiring harness
NO. NO.
(connector position)
Engine harness and engine
E101 A307 compartment harness (left
side of instrument beam)
Engine compartment harness
A304 C204 and front instrument harness
(left side of instrument beam)
Floor harness (under driver's
D701 D202
seat)

Floor harness and DPF
D701 Q101 temperature sensor harness
(right side of frame stringer)

Engine compartment harness
A302 C101 and front instrument harness
(left side of instrument beam)
Engine compartment harness
C204 A304 and front instrument harness
(left side of instrument beam)