Geely Emgrand X7. Manual part — 185

(a) Rotated ignition switch to OFF

position .

(b) Disconnect intake manifold

absolute pressure sensor wiring
harness connector EN16.

(c) Rotated ignition switch to ON

position .

(d)

Measure resistance between
intake manifold absolute pressure
sensor wiring harness connector
EN16 terminal No.4 and a
reliable ground.

Standard Value: Less than 3 Ω

(e) Connect intake manifold absolute

pressure sensor wiring harness
connector EN16.

NL02-2041b

4

3

2

1

EN16 进气温度压力传感器线束连接器

4

Is the resistance normal?

Step 5

Replace the intake manifold absolute pressure sensor.

Step 6

Inspect the sensor 5 V reference voltage circuit.

(a) Rotated ignition switch to "OFF"

position .

(b) Disconnect intake manifold

absolute pressure sensor wiring
harness connector EN16.

(c)

Disconnect ECM harness
connector EN01.

(d) Measure the resistance between

intake manifold absolute pressure
sensor harness connector EN16
terminal No.1 and ECM harness
connector terminal No.66. Inspect
whether the circuit is open. If
there is no open circuit, repair the
faulty part.

NL02-2039b

4

3

2

1

EN16 进气温度压力传感器线束连接器

2

No

Go to step 10

Yes

No

Go to step 8

Yes

EN16 air intaketemperature pressure

sensor harness connector

EN16 air intaketemperature pressure

sensor harness connector

739

(e)

Measure resistance between
intake manifold absolute pressure
sensor wiring harness connector
EN16 terminal No.1 and a
reliable ground. Inspect whether
the circuit is short to ground.
Otherwise, repair the fault part.

(f) Measure resistance between

intake manifold absolute pressure
sensor wiring harness connector
EN16 terminal No.1 and power
supply. Inspect whether the
circuit is short to power supply.
Otherwise, repair the fault part.

NL02-2042b

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

66

Test Connection

Standard Value

EN16(1)--EN01(66) resistance

Less than 1 Ω

EN16(1)--grounding resistance

10kΩ or higher

EN16(1)--grounding voltage Less

than

0

V

Step 7

Inspect Sensor Signal Circuit

(a) Rotated ignition switch to OFF position .

(b) Disconnect intake manifold absolute pressure sensor wiring harness connector EN16.

(c) Disconnect ECM harness connector EN01.

(d) Measure the resistance between

intake manifold absolute pressure
sensor harness connector EN16
terminal No.2 and ECM harness
connector terminal No.54. Inspect
whether the circuit is open. If
there is no open circuit, repair the
faulty part.

(e)

Measure resistance between
intake manifold absolute pressure
sensor wiring harness connector
EN16 terminal No.2 and a
reliable ground. Inspect whether
the circuit is short to ground.
Otherwise, repair the fault part.

NL02-2043b

4

3

2

1

EN16 进气温度压力传感器线束连接器

1

No

Go to step 9

Yes

EN01 engine control module harness

connector

EN16 air intaketemperature pressure

sensor harness connector

740

(f) Measure resistance between

intake manifold absolute pressure
sensor wiring harness connector
EN16 terminal No.2 and power
supply. Inspect whether the
circuit is short to power supply.
Otherwise, repair the fault part.

NL02-2044b

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

54

Test Connection

Standard Value

EN16(2)--EN01(54)
resistance

Less than 1 Ω

EN16(2)--grounding
resistance

10 kΩ or higher

EN16(2)--grounding voltage Less

than

0

V

Step 8

Inspect sensor ground circuit.

(a) Rotated ignition switch to OFF

position .

(b) Disconnect intake manifold

absolute pressure sensor wiring
harness connector EN16.

(c)

Disconnect ECM harness
connector EN01.

(d) Measure the resistance between

intake manifold absolute pressure
sensor harness connector EN16
terminal No.4 and ECM harness
connector terminal No.66. Inspect
whether the circuit is open. If
there is no open circuit, repair the
faulty part.

NL02-2041b

4

3

2

1

EN16 进气温度压力传感器线束连接器

4

(e) Measure voltage between intake manifold absolute pressure sensor harness connector EN16

terminal No.4 and a reliable ground. Inspect whether the circuit is short to ground. Otherwise,
repair the faulty part.

Test Items

Standard Value

Normal

Go to step 9

EN01 engine control module harness

connector

EN16 air intaketemperature pressure

sensor harness connector

741

Execute next step as per normal.

Step 9

Inspect the ECM Power Supply Circuits.

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

(b) Inspect whether ECM ground circuit is normal.

Step 10

Replace ECM

Step 10

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 11

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.

Step 12

Troubleshooting

5. Maintenance

guide

:

Refer to 2.12.8.3 Replacement of Intake Pressure Temperature Sensor to replace MAP sensor.

Replace ECM. Refer to 2.12.8.1 Replacement of Engine Control Module.

EN16(4)-EN01(76)Resistance value

Less than 1 Ω

Voltage Between EN16 (4) and A Reliable Ground

0V

No

Refer to 2.12.7.3 Intermittent Fault
Inspection for intermittent fault.

Yes

Next

Next

Next

Next

742