(a)  Make sure that speed sensor wire 

harness connector EN21 terminal 
No.3 and combined instrument 
wire harness connector IP02 
terminal No.1 are connected. 

Standard resistance: less than 1 Ω 

Is the resistance at a specified value? 

NL11-3031b

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18

IP02 组合仪表线束连接器2

1

1

2

3

EN21 车速传感器线束连接器

3

 

4 

Inspect the communication between the terminal No.2 of the speed sensor connector 
EN21 and the engine grounding. 

 

(a) 

Measure resistance between 
speed sensor connector EN21 
terminal No.2 and engine 
grounding. 

Standard resistance: less than 1 Ω 

Is the resistance at a specified value? 

NL11-3054b

1

2

3

EN21 车速传感器线束连接器

2

 

Yes 

The system is normal. 

No 

Yes 

The system is normal. 

No 

EN21 speed sensor harness 

connector 

IP02 combination instrument 

harness connector2 

EN21 speed sensor harness 

connector 

2375

5 

Inspect and repair the circuit between the terminal No.2 of the speed sensor wire 
harness connector EN21 and the engine grounding. 

(a)  Make sure that speed sensor wire harness connector EN21 terminal No.2 and engine 

grounding are connected. 

Inspect whether the speedometer works normally. 

 

(a)  Replace the vehicle speed sensor and refer to 3.3.8.2 "Replacement of Vehicle Speed 

Sensor". 

Inspect whether the speedometer works normally. 

 

7 

Replace instrument cluster, 

(a)  Replace the combination instrument and refer to 11.6.7.1 Replacement of Combination 

Instrument Assembly. 

Confirm the completion of repair. 

 

8 

The system is normal. 

 

6 

Replace the vehicle speed sensor. 

Next 

Yes 

The system is normal. 

No 

Yes 

The system is normal. 

No 

2376

 

11.7.6.15 Temperature gauge can not indicate normally 

Circuit diagram: 

NL11-3055b

IPC

发动机冷却液
温度传感器

WATER

TEMP

5 IP01

2 EN23

 

Diagnostic steps: 

1 General 

inspection 

(a)  Inspect whether combined instrument wire harness connector has damage, bad connection, 

ageing and loose conditions. 

Inspect if the result is normal 

 

2 

Inspect the communication between the terminal No.2 of the engine coolant 
temperature sensor wire harness connector EN23 and the terminal No.2 of the 
combination instrument wire harness connector IP01. 

(a)  Measure resistance between engine coolant temperature sensor wire harness connector EN23 

terminal No.2 and combined instrument wire harness connector IP01 terminal No.2. 

Standard resistance: less than 1 Ω 

Is the resistance at a specified value? 

No 

Fault discovered by maintenance 

Yes 

Engine coolant 

temperature sensor

2377

NL11-3056b

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18

IP01 组合仪表线束连接器1

3

2

1

EN23 冷却液温度传感器线束连接器

2

2

 

 

3 

Inspect and repair the wire harness between the terminal No.2 of the engine coolant 
temperature sensor wire harness connector EN23 and the terminal No.2 of the 
combination instrument wire harness connector IP01. 

(a)  Make sure that engine coolant temperature sensor wire harness connector EN23 terminal 

No.2 and combined instrument wire harness connector IP01 terminal No.2 are repaired and 
connected. 

Inspect whether the water temperature gauge works normally. 

 

4 

Replace the engine coolant temperature sensor. 

Replace the temperature sensor of engine coolant and refer to 2.2.8.3 "Replacement of temperature 
sensor of engine coolant". 

Inspect whether the water temperature gauge works normally. 

 

Yes 

The system is normal. 

No 

Yes 

The system is normal. 

No 

Yes 

Go to step 4 

No 

EN23coolant temperature 

sensorharness connector 

IP01 combination instrument harness 

connector1 

2378