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Operation Manual for Howo Trucks
Time:06-22-2021

This manual is the latest editon for vehicle's operation and we reserve the rights of technical alteration and upgrades for better improvement without prior notice !



The general overview helps you to know instrument panels and control equipments.

Item

Description

Item

Description

1

Warm air outlet

8

Transmission shift handle

2

Horn button

9

Button switch control panel

3

Steering wheel

10

Ashtray

4

Combination instrument

11

Air conditioner control panel and LCD

5

Cruise control switch

12

Cigar lighter

6

Handle of hand brake valve

13

Cup seat

7

Handle of trailer hand brake valve


Combination Instrument CMIC


Item

Description

1

Speedometer

2

Engine tachometer

3

Engine water temperature gauge

4

Fuel gauge

5

Subsection mileage/Subsection mileage fuel consumption reset button

6

Air pressure gauge of brake circuit 1

7

Air pressure gauge of brake circuit 2

8

LCD

9

Alarm indicator


Combination Instrument Function Instruction

1. Speedometer

The speedometer displays vehicle’s running speed.

The speed will be zero if error occurs in the communication between tachograph and CPU, meanwhile the error indicating massage will be displayed on the combination instrument screen.

The vehicle odometer and phase mileage information will be displayed on the lower right corner of screen.

2. Engine Tachometer

The engine tachometer displays engine rotating speed.

The needle will stay at the position which is +5° exceeding maximum when engine rotating speed is over scale range.

3. Engine Water Temperature Gauge

It displays the temperature of engine cooling water.

The alarm indicator of engine cooling water temperature will light up when temperature is over 95℃, meanwhile the serious alarm indicator flashes and buzzer gives an alarm.

4. Fuel Gauge

The fuel gauge displays fuel quantity in the fuel tank.

The fuel alarm indicator will light up when the fuel quantity is less than 1/8 of total fuel capacity in the fuel tank.

5. Subsection Mileage Fuel Consumption Reset Button

When vehicle is parking, press the button continuouslly more than 2 seconds, which is used to reset subsection mileage/subsection mileage fuel consumption.

6. LCD

It displays many kinds of information, such as accumulative total mileage, subsection mileage, time and so on. All the information is dispatched from CPU to combination instrument through data bus and displayed on LCD.

According to display sequence and detail functions on LCD, the displaying contents of each page is introduced as follows:

6.1. Logo

The logo “CNHTC” will be displayed within 1.5 second after key switch turns on. Please refer to picture.

6.2. Normal Driving Information

Display vehicle information under normal driving, refer to picture

The contents are displayed as follows:


Electric Source Voltage (Item 1, Item 2 in Picture)

Display electric source voltage in the form of figure on LCD, range: 0–32 V.

Oil Pressure of Engine (Item 3, item 4 in Picture)

Display oil pressure in the form of figure on LCD as well.

Transmission Gears Information (Item 5 and item 6 in Picture)

When installed manual transmission, it shows N, R and blank on the Item 6 position which means neutral, reverse gear and forward gear.

Cruise Working Indicator (Item 10 in Picture)

When vehicle comes into cruise driving, it displays “CC”.

Time (Item 11 in Picture)

Time displaying: The time will show tachograph’s time if system connects with tachograph of VDO which connects chassis CPU through CAN bus.

If tachograph of VDO is not equipped, the displayed time will be set by the customer after system electrifying.

Accumulative Total Mileage of Vehicle (Item 13 in Picture)

Display range: 0~9999999km.

Subsection mileage (Item 14 in Picture)

Display range: 0~9999.9km.

If accumulative mileage exceeds displaying range or press subsection mileage/subsection mileage fuel consumption reset button for 2 seconds, subsection mileage and subsection mileage fuel consumption will be reset.

6.3. Displaying Page of Working Information

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