Geely Emgrand X7. Manual part — 329

A. Turn the ignition switch to the OFF position.

B. Connect an oscilloscope to Terminals 1 and 10 of

the harness connector J-3 of the automatic
transmission control module.

C. Turn the ignition switch to the ON position.

D. Start up the engine and increase the engine RPM

to observe whether the waveform on the
oscilloscope is as shown in the right figure.

SL03-0038c

Is the waveform consistent with the right figure?

6 ReplaceTCU

Refer to 3.5.7.8 replace automatic transmission control module

7

Go to automatic transmission fresh process.

Refer to3.5.7.4 Automatic transmission refresh process

8

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

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

B. Rotated ignition switches 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.

No

Yes

Replace auto-transmission assembly, refer

to3.4.7.6 replace auto-transmission assembly

Next

Next

1315

9 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

Refer to 2.2.7.3 Intermittent Fault Inspection for
intermittent fault.

1316

3.5.7.15 P071D P071E P071F

1. DTC

description:

DTC P071D Manual shift control upper/ down (TGS)stuck

DTC P071E Voltage of manual shift control upper/ down (TGS)signal is too low

DTC P071F High manual shift control up/down (TGS) signal voltage (open circuit)

When the control rod is in the position M, the driver can define the maximum applicable speed ratio through the
selection of + or - on the selector. When initially moving the control level to the manual M position, the
transmission will select the minimum applicable speed ratio.

When reaching the maximum of revolution per minute of the engine, the transmission will automatically shift up
no matter how the driver selects the limit.

Manual mode gear control keys + and - are installed on the selector.

2. Conditions for setting DTC and the fault position :

DTC code

DTC detection strategy

Conditions for setting the DTC (control

strategy)

Fault position s

P071D

Manual shift control
up/down switch (TGS)
has been pressed down
for at least 120s
consecutively, which
indicates that the switch
is broken down.

P071E

Manual shift control
upper/ down
(TGS)switch signal give
an short circuit
indicating value

P071F

Manual shift control
upper/ down
(TGS)switch signal give
an open circuit indicating
value

Ignition switch is in ON position

1. shifter

2. Shifter

line

3. TCU

3. Circuit

sketch

1317

T

C

U

电磁阀

换挡器

档位开关

LEVER

REVERSE

START

VBS5

VBS6

VBS7

V

BS8

VBS9

VBS1

0

O

n

O

ff

1

O

n

O

ff

2

O

n

O

ff

3

O

n

O

ff

4

EMM

INPUT

SHAFT

SPEE

D

SENSOR

OU

TPUT

SHAFT

t

SPE

ED

SENSOR

25

26

10

11

9

8

13

12

24

23

22

21

20

7

6

5

4

3

2

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

J-4

1

18

8

1

3

2

12

14

4

11

12

9

10

15

2

1

4

3

6

5

7

7

J-5

5

16

17

J-5

4

J-5

1

J-5

6

J-5

2

J-5

3

4

11

10

10

15

3

CAN H

启动继电器

倒车信号

输出

主继电器

JF-1

IG2

JB-2

CAN L

10

20

J-3

J-1

J-3

J-2

J-2

J-3

J-3

J-3

J-1

8

J-3

J-3

J-3

J-3

J-3

J-3

J-3

J-3

J-1

J-1

J-1

J-1

J-1

J-1

J-1

J-1

J-1

J-1

J-1

J-1

IF36

NL03-2005c

4. Diagnostic

procedures:

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.

1

Read the fault code again after clearing away the fault code to check if fault codes, except DTC
P071D, P071E and P071F exist in the control system.

A. Connect fault diagnosis tester to the datalink connector.

B. Rotated ignition switch to ON position

C. Switch on fault diagnostic device power supply

D. Clear DTC code.

E. Reset reading fault code, and check if DTCs meet setting condition of fault code in current

DTC Codes shown

To step

DTC P071D, P071E, P071F

Yes

DTCs other than DTCs P071D, P071E and P071F

No

Gears switch

Main relay

JF-1

Reverse output

signal

Start relay JB-2

Shifter

Electromagnetic

valve

1318