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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