Pos Explanation Signal description Reference 1 The ignition key lock sends a voltage
signal to Control unit, cab (D790-1) when the ignition key is turned to position 1.
U = 24 V Ignition key lock, description, page 1:19 D1: Diagnostic menu, see section 8 Control system, group 8.4.1.4 CAN/POWER, menu 4 and 8.4.6.4 ENGINE, menu 4
2 Control unit, cab (D790-1) sends Ignition on via the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.1 Control unit, cab
3 When required, the Control unit, engine (D794) activates the preheating coil.
Status signal is also sent to Control unit, frame rear (D797-R).
U = 24 V Section 11 Common electrics, group 11.5.3.2 Control unit, rear
D3: Diagnostic menu, see section 8 Control system, group 8.4.6.5 ENGINE menu 5 4 Control unit, frame rear (D797-R) sends
preheating active on the CAN bus.
Checked by control system, error shown with error code.
D3: Diagnostic menu, see section 8 Control system, group 8.4.6.5 ENGINE menu 5
5 Control unit KIT (D790-2) activates indicator light, preheating.
- Section 11 Common electrics, group
11.5.3.11 Control unit, KIT 6 The ignition key lock sends a voltage
signal to Control unit KIT (D790-2) when the ignition key is turned to start position.
U = 24 V Ignition key lock, description, page 1:19 D6: Diagnostic menu, see section 8 Control system, group 8.4.6.4 ENGINE menu 4 7 Control unit KIT (D790-2) sends a start
signal on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.11 Control unit, KIT
8 Control unit, frame rear (D797-R) supplies voltage to Relay, starter motor (K360) on the starter motor.
U = 24 V Section 11 Common electrics, group 11.5.3.2 Control unit, frame rear (D797-R) D8: Diagnostic menu, see section 8 Control system, group 8.4.6.5 ENGINE menu 5 9 The starter motor cranks the engine. - Starter motor, description, page 1:31
D8: Diagnostic menu, see section 8 Control system, group 8.4.6.5 ENGINE menu 5 10 The engine's sensor sends signals to
Control unit, engine (D794) that controls the injectors so the engine starts.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.10 Control unit, engine
11 The accelerator pedal sends a voltage signal proportional the depression to Control unit, cab (D790-1).
U = 0.5-4.5 V
Lower voltage than 0.5 V and higher voltage than 4.5 V is used to detect faults in cable harnesses and controls.
Section 9 Frame, body, cab and accessories, group 9.1 Controls and instruments
D11: Diagnostic menu, see section 8 Control system, group 8.4.6.1 ENGINE menu 1
12 Control unit, cab (D790-1) sends a message with the rpm request on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.1 Control unit, cab
13 Control unit, engine (D794) increases the engine speed.
- Section 11 Common electrics, group
11.5.3.10 Control unit, engine 14 Make-contact (closing switch) coolant level
sends a voltage signal to Control unit, frame front (D797-F) if the coolant level is low in the expansion tank.
Low level: U = 24 V Cooling system, description, page 1:23
15 Make-contact (closing switch) water in fuel (B760) sends a ground signal to Control unit, engine (D794) if there is too much water in the fuel prefilter. Control unit, frame front (D797-F) is used to supply voltage for the signal.
Water in fuel: U = 0 V Make-contact (closing switch) water in fuel, description (engine alternative Yuchai YC6M360-30), page 1:20
Pos Explanation Signal description Reference 16 Control unit, engine (D794) sends engine
data and warning messages on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.10 Control unit, engine D14: Diagnostic menu, see section 8 Control system, group 8.4.6.6 ENGINE, menu 6 and 8.4.6.7 ENGINE, menu 7 17 Control unit, frame front (D797-F) sends
lamp information on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.2 Control unit, frame front
18 Control unit KID (D795) shows engine data via display figures.
- Section 11 Common electrics, group
11.5.3.12 Control unit, KID 19 Control unit KIT (D790-2) activates warning
lamps when necessary.
- Section 11 Common electrics, group
11.5.3.11 Control unit, KIT 20 Sensor fuel level (B757) sends a voltage
signal proportional to the fuel level in the tank to Control unit, frame rear (D797-R).
U = 0.5-4.5 V
Lower voltage than 0.5 V and higher voltage than 4.5 V is used to detect faults in cable harnesses and controls.
Sensor, fuel level, description, page 1:20 D20: Diagnostic menu, see section 8 Control system, group 8.4.3.7 CAB, menu 7
21 Control unit, frame rear (D797-R) sends fuel level on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.2 Control unit, frame rear
22 Control unit KID (D795) shows the fuel level in the operating menu for the engine.
- Section 11 Common electrics, group
11.5.3.12 Control unit, KID 23 If the rotation speed of the output shaft is
so high that it corresponds with the limit for the machine's speed limitation then Control unit, cab (D790-1) sends reduce engine speed on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.1 Control unit, cab
24 Control unit, engine (D794) limits the engine speed.
- Section 11 Common electrics, group
11.5.3.10 Control unit, engine
Engine alternative Cummins QSM11,
Pos Explanation Signal description Reference
1 The ignition key lock sends a voltage signal to Control unit, cab (D790-1), when the ignition key is turned to position 1.
U = 24 V Ignition key lock, description, page 1:19 D1: Diagnostic menu, see section 8 Control system, group 8.4.1.4 CAN/POWER, menu 4 and 8.4.6.4 ENGINE, menu 4
2 Control unit, cab (D790-1) sends Ignition on as a start message on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.1 Control unit, cab
3 The ignition key lock sends a voltage signal to Control unit KIT (D790-2), when the ignition key is turned to start position.
U = 24 V Ignition key lock, description, page 1:19 D2: Diagnostic menu, see section 8 Control system, group 8.4.6.4 ENGINE menu 4 4 Control unit KIT (D790-2) sends a start
signal on the CAN bus.
Checked by control system, error shown with error code.
Section 11 Common electrics, group 11.5.3.11 Control unit, KIT
5 Control unit, frame rear (D797-R) supplies voltage to the starter motor.
U = 24 V Starter motor, description, page 1:31 D5: Diagnostic menu, see section 8 Control system, group 8.4.6.5 ENGINE menu 5 6 The starter motor cranks the engine. - Starter motor, description, page 1:31 7 The engine's sensor sends signals to
Control unit, engine (D794) that controls the injectors so the engine starts.
- Section 11 Common electrics, group 11.5.3.10
Control unit, engine