Geely EC718, EC718RV, EC715, EC715RV. Manual part - 45

Geely EC718, EC718RV, EC715, EC715RV. Manual part - 45

1

2

3

4

Intake Air Pressure Temperature
Harness Connector EN16

FE02-5026b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake air pressure and temperature sensor
wiring harness connector EN16.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure resistance between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.1 and a reliable ground.

Standard Resistance: Less than 3 Ω

(e)

Connect intake air pressure and temperature sensors wiring
harness connector EN16.

Is resistance normal?

No

Go to step 6

Yes

Go to step 7

Step 5

Check intake air temperature sensor signal circuit.

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ECM Harness Connector EN01

1

2

3

4

Intake Air Pressure Temperature

Harness Connector EN16

FE02-5027b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake air pressure and temperature sensor
wiring harness connector EN16.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.2 and ECM harness connector terminal No.25. Check
whether the circuit is open.

(e)

Measure resistance between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.2 and a reliable ground. Check whether the circuit is short
to ground.

(f)

Measure voltage between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.2 and a reliable ground. Check whether the circuit is short
to power supply.

Test Items

Standard Value

Resistance Between EN16 (2) and EN01 (25)

Less than 1 Ω

Resistance Between EN16 (2) and a Reliable
Ground

10 kΩ or higher

Voltage Between EN16 (2) and a Reliable
Ground

0 V

Next

Go to step 7

Step 6

Check intake air temperature sensor ground circuit.

Engine

Control System JL4G18-D

2-95

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29

30

37

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52

53

54

55

56

57

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62

63

64

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ECM Harness Connector EN01

1

2

3

4

Intake Air Pressure Temperature

Harness Connector EN16

FE02-5028b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect intake air pressure and temperature sensor
wiring harness connector EN16.

(c)

Disconnect ECM harness connector EN01.

(d)

Measure resistance between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.1 and ECM harness connector terminal No.40. Check
whether the circuit is open. If there is no open circuit,repair
the faulty part.

(e)

Measure voltage between intake air pressure and
temperature sensor wiring harness connector EN16 terminal
No.1 and a reliable ground. Check whether the circuit is short
to power supply. If there is no short circuit,repair the faulty
part.

Test Items

Standard Value

Resistance Between EN16 (1) and
EN01 (40)

Less than 1 Ω

Voltage Between EN16 (1) and a
Reliable Ground

0 V

Execute next step as per normal.

Next

Step 7

Check ECM power supply circuit.

(a)

Check whether ECM power supply circuit is normal.

(b)

Check whether ECM ground circuit is normal.

No

Repair the faulty part.

Yes

Step 8

Replace ECM.

Next

Step 9

Use scan tool to confirm whether the DTC code is stored again.

(a)

Connect scan tool to the datalink connector.

(b)

Turn the 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.

No

Intermittent Fault. Refer to

2.2.7.3

Intermittent

Fault Check

2-96

Control System JL4G18-D

Engine

Yes

Step 10

Diagnostic completed.

5. Repair Instructions:

Replace intake air pressure and temperature sensor. Refer to

2.2.8.7

Intake Air Pressure and Temperature Sensor Replacement

.

2.2.7.19 DTC P0117 P0118

1. DTC Descriptor:

DTC

P0117

Engine Coolant Temperature Sensor Circuit Voltage Too Low

DTC

P0118

Engine Coolant Temperature Sensor Circuit Voltage Too High

ECT sensor is a variable resistor with negative temperature coefficient and is used to measure engine coolant temperature. ECM
provides 5V voltage through ECM harness connector EN01 terminal No.41 ECT sensor harness connector EN23 terminal A. It also
provides a low reference voltage through EN01 terminal No.40 to the ECT sensor connector EN23 terminal C. ECM will always
record the length of time the ignition switch off. When starting if it reaches the set ignition switch off time, the engine control module
will compare the engine coolant temperature and intake air temperature in order to determine whether the temperature difference
is within the 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
P0118

1. More Than the

Upper Limit

2. Lower Than the

Lower Limit

1. Short to Ground. The engine coolant temperature is higher

than 140°C (284 ºF).

2. Short to power supply. The engine coolant temperature is

lower than -37.5°C (-35.5 ºF).

1. Sensor Circuit

2. Sensor

3. ECM

Engine

Control System JL4G18-D

2-97

3. Schematic:

Engine Coolant Temperature Sensor

Engine

Control

Module

FE02-5029b

4. Diagnostic Steps:

Warning!

Refer to "Cooling System Servicing Warning" in "Warnings and Notices".

Note

Before carrying out this diagnosis step, observe the data list on scan tool and analyze the accuracy of the data, as
these will help with quick diagnosis.

Note

It is not recommended at any time to use flammable anti-freezer, such as alcohol. Combustible anti-freezer can cause
serious fires.

Step 1

Initial Inspection

(a)

Check the engine coolant temperature sensor whether there
is evidence of corrosion, as well as the engine coolant leaking
through the sensor.

(b)

Check the cooling system whether the engine coolant level
is correct.

Next

Step 2

Measure engine coolant temperature sensor resistance.

2-98

Control System JL4G18-D

Engine

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