Geely Emgrand X7. Manual part — 187

(e) Measure voltage between intake

pressure temperature sensor
harness connector EN16 terminal
No.4 and a reliable ground.
Inspect whether the circuit is
short to power supply. If there is
no short circuit, repair the faulty
part.

NL02-2045b

EN01 发动机控制模块线束连接器

1

2

4

5

3

81

63

44

25

6

62

43

24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9

8

7

26

42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27

45

46

61 60 59 58 57 56 55 54 53 52 51 50 49 48 47

64

65

66

80 79 78 77 76 75 74 73 72 71 70 69 68 67

76

Test Items

Standard Value

EN16(4)-EN01(76)Resistance value

Less than 1 Ω

Voltage Between EN16 (4) and A Reliable Ground

0V

Execute next step as per normal.

Step 7

Inspect the ECM Power Supply Circuits.

(a) Inspect whether ECM power supply circuit is normal.

(b) Inspect whether ECM ground circuit is normal.

Step 8

Replace ECM

(a) Refer to 2.12.8.1 Replacement of Engine Control Module to Replace ECM.

(b) Carry out the crankshaft position sensor learning, refer to 2.12.7.11 “Crankshaft Position

Sensor (CKP) Learning.

Step 9

Use fault diagnosis tester to confirm if DTC is stored again .

(a) Connect the fault diagnosis tester to the diagnostic interface.

(b) Turn ignition switch to ON position.

(c) Clear DTC code.

(d) Start and run the engine at idle speed to warm up the engine for at least 5 min.

(e) Read control system DTC code again to confirm that the system has no DTC code exported.

Next

No

Repair the faulty part.

Yes

Next

EN01 engine control module harness

connector

747

Step 10

Troubleshooting

5. Maintenance

guide

:

Replace intake pressure temperature sensor. Refer to 2.12.8.3 Replacement of Intake Pressure
Temperature Sensor.

No

Refer to 2.12.7.3 Intermittent Fault
Inspection for intermittent fault.

Yes

748

2.12.7.20 DTC P0117 P0118

1. DTC

description:

DTC P0117 Temperature Sensor of Engine Coolant Circuit Voltage Too Low

DTC P0118

Temperature Sensor of Engine Coolant Circuit High Voltage or Open Circuit
A

ECT sensor is a variable resistor with a negative temperature coefficient and used to measure the
temperature of engine coolant. ECM provides a 5V voltage through ECM harness connector EN01
terminal No.49 to ECT sensor harness connector EN23 terminal No.3 and a low internal reference
voltage through EN01 terminal No.74 to ECT sensor connector EN23 terminal No.1. ECM will
always record the length of time the ignition switched off. When starting, if the ignition switched
off time reaches the pre-set time, the engine control module will compare the engine coolant
temperature and intake air temperature in order to determine whether the difference between the
two is in normal working range.

2. Conditions For Setting DTC and The Fault Location:

DTC Code

DTC
Detection
Strategy

Conditions For Setting The DTC
(Control Strategy)

Fault Locations

P0117

1. Idle

2. Coolant temperature sensor circuit is

short to ground.

3. Coolant temperature by default

changes as the running time changes.

P0118

More Than the
Upper Limit

Lower Than
the Lower
Limit

1. Idle

2. Coolant temperature sensor signal

circuit is open or short to 5V voltage.

3. Coolant temperature by default

changes as the running time changes.

1. Sensor

Circuit

2. Sensor

3. ECM.

749

3. Circuit

sketch

NL02-2049b

3

EN23

1

EN23

2

EN23

49

EN01

74

EN01

CLT

V5RTN1

发动机冷却液
温度传感器

至组合仪表

ECM

IP01-5

4. Diagnostic

Steps:

Warning!

See Warnings Regarding Cooling System in Warnings and Cautions.

Note: Before carrying out this diagnosis step, observe the data list on fault diagnosis tester and
analyze the accuracy of the data, as these will help with quick diagnosis.

Note: At any time do not use flammable antifreeze, such as alcohol. Combustible antifreeze can
cause serious fires.

Step 1

Initial Inspection

(a) Inspect the temperature sensor of engine coolant for whether there is evidence of corrosion,

as well as the engine coolant is leaking through the sensor.

(b) Inspect whether the engine coolant level in the reservoir of cooling system is correct.

Step 2

Measure resistance of temperature sensor of engine coolant.

(a) Rotated ignition switch to OFF position .

(b) Disconnect the temperature sensor of engine coolant harness connector EN23.

(c) Measure the resistance of temperature sensor of engine coolant.

Standard Resistance: (Refer to 2.12.1.2 Temperature and Resistance Correlation of
Temperature Sensor to get the the specific parameters.): 3511-2726.8Ω/20°C(68ºF)

(d) Connect the temperature sensor of engine coolant harness connector EN23.

Next

Engine
coolanttemperat
ure sensor

To combination

instrument

IP01-5

750