Geely Emgrand X7. Manual part — 72

2.2.7.44 DTC P0571

1. DTC

description:

DTC P0571

The switch state of the brake lamp is not changed when braking.

DTC P0504

Brake Lamp Switch Relativity Malfunction

Disconnect the brake light switch signal. the vehicle braking, system enters the diagnostic window.
After multiple braking, DTC code appears. Engine running smooth, the vehicle can be driven.

2. Conditions For Setting DTC and The Fault Location:

DTC
Code

DTC Detection
Strategy

Conditions For Setting The DTC
(Control Strategy)

Fault Locations

P0571

P0504

ECM receives the
brake light switch
signal.

1. Brake Light Switch Signal

Disconnected.

2. Vehicle braking, system enters

the diagnostic window.

3. DTC codes appear after

repeatedly braking.

1. Brake Light

Switch Circuit

2. Brake Lights

Switch

3. ECM

3. Circuit

figure

69

2

1

4

3

EM01

33

EM01

BL

BR

发

动
机

控
制

模

块

IF28

IF03

制动灯开关

接制动灯

IG2

IP+B

NL02-0063c

Brake lamp switch

Connect to brake

lamp

Engi

ne

co

ntr

ol mo

dul

e

287

4. Diagnostic

Steps:

Notes:

Before carrying out this diagnosis steps, observe the data list on fault diagnosis tester and
analyze the accuracy of the data, as these will help with quick diagnosis.

1

Inspect brake lamps are working properly.

2

Inspect continuity between brake light switch wiring harness connector IP56 and
ECM harness connector EM01.

A. rotated ignition switch to OFF

position .

B.

Disconnect ECM harness
connector EM01.

C. Press the brake pedal.

D. Measure ECM harness connector

EM01 terminal No.69 and 33
voltage.

Standard Voltage: 11-14 V

Confirm whether the voltage is
normal.

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

3

Repair circuit between brake light switch wiring harness connector IP56 and ECM
harness connector EM01.

A. Repair circuit between brake light switch wiring harness connector IP56 and ECM harness

connector EM01.

B. Confirm the repair is completed.

4 Troubleshooting

Next

Yes

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

No

No

Refer to11.4.7.8 Brake Lamp Inoperation.

Yes

ECMharness connectorEM01

288

2.2.7.45 DTC P0601 P0602 P1516 P2101

1. DTC

description:

DTC P0601

ECM Processor Malfunction

DTC P0602

ECM Processor Malfunction

DTC P1516

Diagnostic error for second order of driving electronic throttle

DTC P2101

Diagnostic error for static state of driving electronic throttle

ECM Internal Program Errors.

2. Conditions For Setting DTC and The Fault Location:

DTC
Code

DTC Detection
Strategy

Conditions For Setting The DTC
(Control Strategy)

Fault Locations

P0601 ——

P0602

——

P1516

In a steady-state condition, the throttle
expected by the system is located

The position is more different from the
actual throttle position.

P2101

ECM Internal
Monitoring

In a steady-state condition, the throttle
expected by the system is located

The position is more different from the
actual throttle position.

ECM

3. Diagnostic

Steps:

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

Inspect whether there is any control system DTC codes other than DTC P0601, P0602,
P1516 and P2101.

A. Connect fault diagnosis tester to the datalink connector.

B. Rotated ignition switch to ON position

C. Switch on fault diagnostic apparatus power supply

D. Select the following menu items: Engine/Read DTC codes.

E. Read DTC codes.

DTC Codes Shown

To Step

289

DTC P0601,P0602,P1516 and P2101

Yes

DTC codes other than DTC P0601, P0602, P1516 and P2101

No

2 Replace

ECM

Refer to 2.2.7.11 “Crankshaft Position Sensor (CKP) Learn” to carry out the crankshaft position
sensor learn after replacing the ECM.

No

Refer to 2. 12.7.14 DTC Chapter Index.

Yes

290