Geely Emgrand X7. Manual part — 335

2

Detect TCU power supply circuit

See 3.5.7.8 P0603 P0604 P1604 P1701 P1703

3

Detect S10electromagnetic valve resistance

A. Turn the ignition switch to the OFF position.

B. Disconnect the harness connector J-4 of the

electromagnetic valve.

C. Measure the resistance between Terminals 7 and

1 of the electromagnetic valve harness connector
J-4.

Standard resistant value :4.11Ω-4.17Ω

电磁阀线束连接器

J-4

1

8

20

14

9

15

10

16

11

17

12

18

13

19

2

21

3

22

4

23

5

24

6

25

7

26

SL03-0036c

Does it conform to the standard value?

3

Detect S10electromagnetic valve circuit

No

Yes

Refer to3.4.7.6 fault diagnosis code (DTC)
chapter index

Next

No

Yes

Replace auto-transmission assembly , refer
to3.4.7.6 auto-transmission assembly replacement

Electromagnetic valve harness connectorJ-4

1339

A. rotated ignition switch to OFF position .

B. Disconnect the harness connector J-4 of the

electromagnetic valve.

C. Measure the resistance between Terminal 7 of the

electromagnetic valve harness connector J-4 and
Terminal No.2 of the automatic control module
J-1.

D. Measure the resistance between Terminal No.1 of

the electromagnetic valve harness connector J-4
and Terminal 7 of the automatic control module
J-1.

E. Turn the ignition switch to the ON position.

F. Measure voltage of electromagnetic valve

harness connector J-4No.7 terminal and reliable
grounding

自动变速器控制模块线束连接器

J-1

1

9

2

10

3

11

4

12

5

13

6

14

7

15

8

16

SL03-0034c

G. Measure the resistance between Terminal No.1 of the electromagnetic valve harness connector J-4 and secure

ground wire.

Results

Test Items

Standard Value

J-4 (7) — J-1(2)

Less than 3 Ω

J-4 (1) — J-1(7)

Less than 3 Ω

J-4 (7) — Reliable grounding voltage value

0 V

J-4 (1) — Reliable grounding resistance value

Less than 3 Ω

Does it conform to the standard value?

4 Replace

TCU

Refer to3.5.7.8 replace automatic transmission control module

5

Go to automatic transmission fresh process .

Refer to3.5.7.4 Automatic transmission refresh process

No

Yes

Circuit malfunction, repair circuit.

Next

Auto-transmissioncontrol module harness connectorJ-1

1340

6

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

A. Connect fault diagnosis tester to the data link connector.

B. Rotated 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 5min.

E Read control system DTC code again to confirm that the system has no DTC code exported.

7 Troubleshooting

5. Maintenance

guide:

Replace automatic transmission control module, refer to3.5.7.8 replace automatic transmission control module

Replace Automatictransmission assembly, refer to3.5.7.6 Automatictransmission assembly replacement

Yes

No

Next

Refer to 2.2.7.3 Intermittent Fault Inspection for
intermittent fault.

1341

3.5.7.20 P0985 P0986

1. DTC

description:

DTC P0985 Electromagnetic valveS5 high current (short circuit)

DTC P0986 Electromagnetic valveS5low current(open circuit)

The transmission control unit (TCU) uses a variable pressure electromagnetic valve to regulate the hydraulic
pressure. The hydraulic system controls the clutch in the transmission to realize the torque transmission.

The transmission control unit (TCU) can control a certain amount of pressure by adjusting the current of the
electromagnetic valve to enter the clutch and the transmission of the clutch torque is directly related to the current
of the electromagnetic valve.

During operation, the transmission control unit evaluates the current actually delivered to the electromagnetic
valve and compares with the expected. If there is no pre-defined parameter currently, the DTC is set to display
abnormal load of the transmission control unit.

2. Conditions For Setting DTC and The Fault Position :

DTC Code

DTC Detection

Strategy

Conditions For Setting The DTC

(Control Strategy)

Fault Position s

P0985

Feed back message of
electromagnetic
valveS5 exist short
circuit

P0986

Feed back message of
electromagnetic
valveS5 exist open
circuit

1. Ignition switch is in the “ON”

position.

2. Electromagnetic valve power on

3. TCU power supply voltage is normal

1. Electromagnetic

valve

2. Electromagnetic

valve Circuit

3. TCU

3. Circuit

sketch

1342