Geely Emgrand X7. Manual part — 43

(a) Rotated ignition switch to OFF

position .

(b) Disconnect intake manifold

absolute pressure sensor wiring
harness connector EM30.

(c) Rotated ignition switch to ON

position .

(d) Measure voltage between intake

manifold absolute pressure sensor
wiring harness connector EM30
terminal No.1 and a reliable
ground.

进气压力温度传感器线束连接器 EM30

1

2

3

4

NL02-0035c

Standard voltage: 4.5V-5.5V

(e) Connect

intake

manifold

absolute pressure sensor wiring harness connector EM30.

Is voltage the specified value?

Step 3

Measure Sensor Signal Circuit

(a) Rotated ignition switch to OFF position .

(b) Disconnect intake manifold absolute pressure sensor wiring harness connector EM30.

(c) Rotated ignition switch to ON position .

(d) Connect a 5A fuse cross-wiring between EM30 terminals No. 2 and No.4. With a fault
diagnosis tester, observe Actual Intake Manifold Absolute Pressure Sensor Voltage parameter.

standard value: 4.5V-5.5V

(e) Connect

intake

manifold

absolute pressure sensor wiring harness connector EM30.

Is data normal?

Step 4

Measure intake manifold absolute pressure sensor ground circuit.

(a) Rotated ignition switch to OFF position .

(b) Disconnect intake manifold absolute pressure sensor wiring harness connector EM30.

(c) Rotated ignition switch to ON position .

(d) Measure resistance between intake manifold absolute pressure sensor wiring harness

connector EM30 terminal No.4 and a reliable ground.

Standard Value: Less than 3 Ω

(e) Connect

intake

manifold

absolute pressure sensor wiring harness connector EM30.

No

Go to step 7

Yes

No

Repair or replace harness connector

Yes

Air intake pressuretemperature sensorharness

connectorEM30

171

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 EM30.

(c) Disconnect ECM harness connector EM01.

(d) Measure the resistance between intake manifold absolute pressure sensor harness connector

EM30 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.

(e) Measure resistance between

intake manifold absolute pressure
sensor wiring harness connector
EM30 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
EM30 terminal No.1 and power
supply. Inspect whether the
circuit is short to power supply.
Otherwise, repair the fault part.

ECM线束连接器

EM01

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

NL02-0033c

Test Connection

Standard Value

Resistance Between EM30 (1) and EM01 (66)

Less than 1 Ω

Resistance Between EM30 (1) and Ground

10 kΩ or higher

Voltage Between EM30 (1) and Ground

Less than 0 V

Step 7

Inspect Sensor Signal Circuit

(a) Rotated ignition switch to OFF position .

No

Go to step 10

Yes

No

Go to step 8

Yes

No

Go to step 9

ECMharness connectorEM01

172

(b) Disconnect intake manifold absolute pressure sensor wiring harness connector EM30.

(c) Disconnect ECM harness connector EM01.

(d) Measure the resistance between intake manifold absolute pressure sensor harness connector

EM30 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 EM30 terminal No.2 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 EM30 terminal No.2 and power supply. Inspect whether the circuit is short to
power supply. Otherwise, repair the fault part.

Test Connection

Standard Value

Resistance Between EM30 (2) and EM01 (54)

Less than 1 Ω

Resistance Between EM30 (2) and Ground

10 kΩ or higher

Voltage Between EM30 (2) and Ground

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 EM16.

(c) Disconnect ECM harness connector EM01.

(d) Measure the resistance between intake manifold absolute pressure sensor harness connector

EM30 terminal No.4 and ECM harness connector terminal No.76. Inspect whether the circuit
is open. If there is no open circuit, repair the faulty part.

(e) Measure voltage between intake manifold absolute pressure sensor harness connector EM30

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

Test Items

Standard Value

Resistance Between EM30 (4) and EM01 (76)

Less than 1 Ω

Voltage Between EM30 (4) and a Reliable Ground

0V

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.

Next

Next

Normal

Go to step 9

173

Step 10

Replace ECM

Step 10

Replace ECM

(a) Refer to 2.2.8.1 Replacement of Engine Control Module to Replace ECM.

(b) Carry out the crankshaft position sensor learning, refer to 2.2.7.11 “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 2.2.8.3 Replacement of Intake Pressure Temperature Sensor to replace MAP sensor.

Replace ECM. Refer to 2.2.8.1 Replacement of Engine Control Module.

No

Refer to 2.2.7.3 Intermittent Fault Inspection for
intermittent fault.

Yes

Next

Next

174