Geely Emgrand X7. Manual part — 653

1. Reduce the number of sensors and signal conducting wires.

2. Reduce the number of conducting wires in wiring harness.

3. Greatly reduce the weight of the conducting wiring harness.

4. Smaller quantity of pins in control devices.

5. Improve the reliability and durability.

–

In this vehicle, high-speed CAN bus allows the communications between BCM, ECM, ABS,
ACU, IP Cluster and DLC.

LIN Bus Description

–

LIN is a new type of low-cost serial communication system used for automotive distributed
electronic control system, mainly applied for the serial communication of intelligence sensors
and actuators.

–

LIN bus features:

Based on UART data format

Single-master multi-slave structure

Single wire transmission: 0-12 V

Communication speed: 19.2 kbps

K Bus Description

–

K bus is for the diagnostic communication between the vehicle-mounted ECM and the
external test equipment. Transfer rate is 10.47 kbps. Voltage is switched between 0 V and 12
V: 12 V, logic "1"; 0 V, logic "0".

Datalink connector description

Datalink connector (DLC) is the result of consultation and regulations between the international
automotive manufacturers. The connector must be used when using a fault diagnosis tester to
communicate with the vehicle and make a program for all vehicle communication systems.

The connector must meet the following conditions:

–

It can connect the 16-pin connector of all fault diagnosis testers.

–

Always use No.16-pin to provide power of battery for the fault diagnosis tester.

–

Always use No.4-pin to provide earthing point for the fault diagnosis tester.

–

The rest pins are designed for vehicle serial data communications. The modules controlled by
a microprocessor of the vehicle communicate with each other and between the fault diagnosis
testers by the serial data circuit.

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11.16.3 System operating principle

11.16.3.1 System work principle (without CAN)

Composition of Data Communication System

Use fault diagnosis tester to access the following control module data circuits:

– ECM

– ABS

– ACU

– BCM

LIN Bus Applications

LIN bus is arranged on the vehicle with electric window anti-trapping function for connecting the
BCM and 4 window and door lifter, thereby realizing the remotely rising and Anti-clamp ing
function of the power window. Refer to 11.5.2 Description and Operation of 11.5
Glass/Window/Rearview Mirror.

K Bus Applications

Carry out fault diagnosis on ECM, ABS, SRS and BCM of the vehicle through K line.

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11.16.3.2 System work principle (with CAN)

Composition of data communication zystem

Use fault diagnosis tester to access the following control module data circuits:

– ECM

– ABS

– IP

Cluster

– IMMO

– ACU

– BCM

LIN bus applications

The vehicle with power window anti- pinch function is equipped with a LIN bus, connecting BCM
and 4 window regulators to achieve the remote control and Anti-clamp function of power window,
refer to 11.5.2.1 Description and Operation.

K Bus applications

This vehicle uses the K-bus to achieve the IMMO fault diagnosis.

CAN Bus applications

There are two high speed CAN bus network in this vehicle. The five modules including ABS,
ACU, BCM, ECM, and IP Cluster are parallelly connected to the CAN bus to form a CAN bus
network architecture. The terminal resistors are set inside the BCM, ECM and IP Cluster. Refer to
figure below:

EM

0

1

EM

0

1

IP

6

1

IP

6

1

18

39

38

6

14

17

IP

6

1

IP

6

1

1

2

IP

0

1

IP

0

1

20

21

BCM

IPC

ECM

ABS

DLC

25

26

14

50

ACU

IP15

IP15

IP12

IP12

3

11

IP12

IP12

CA13

CA13

NL11-0018c

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11.16.4 Component position

11.16.4.1 Module position

6

5

4

7

8

1

2

3

NL11-2230b

1. Right front window regulator motor with

module assembly (anti-clamp )

2. Right rear window regulator motor with

module assembly (anti-clamp )

3. Parking

radar

control

module

4. Left rear window regulator motor with

module assembly (anti-clamp )

5. Left front window regulator motor with

module assembly (anti-clamp )

6. ABS

control

module

7. Underhood Relay Fuse Block

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