Geely Emgrand X7. Manual part — 479

10.2.4.8 DTC B1211

Fault diagnosis code Descriptions

B1211

The indoor dome lamp is in short circuit until the battery is broken down.

Circuit diagram:

NL11-3250b

1 RF12

2 RF12

ACC

15A

IF06

3 RF12

IP49

3

BCM

前顶灯

INTERNAL
-LAMP

Diagnostic Steps:

1

Inspect whether there is any DTC Code other than B1211.

(a) Inspect whether there is any DTC Code other than B1211.

2

Measure the voltage of the in-vehicle roof lamp.

Yes

Go to

DTC list in 10.2.4.2

and repair according to

trouble codes.

No

Front

ceiling

lamp

1915

(a) Turn the ignition switch to ON position.

(b) Open

indoor

lamp

(c) Measure voltage of dome lamp wire harness

connector RF12 terminal 3.

Standard Voltage: 11-14 V

NL11-3216b

9

8

7

4

3

2

6

5

1

1

2

6

3

4

5

CA18右前组合灯线束连接器

SO24右后组合灯线束连接器

3

Inspect the bulb.

(a) Inspect whether dome lamp bulb is burned out.

Confirm whether the indoor dome lamp bulb is blown out.

4

Inspect the communication between the fuse and the front
ceiling lamp.

No

Go to step 4

Yes

Yes

Replace the bulb .

No

CA18Right front combination lamp harness

connector

SO24Right rearcombination lamp harness connector

1916

(a) Turn the ignition switch to OFF position.

(b) Disconnect front ceiling harness connector

RF12.

(c) Measure resistance between fuse IF06 and

front top lamp wire harness connector RF12
terminal 3.

Standard Resistance: Less than 1 Ω

Confirm if the resistance conforms to standard
value.

NL11-3215b

9

8

7

4

3

2

6

5

1

1

2

6

3

4

5

CA18右前组合灯线束连接器

IP48BCM线束连接器

SO24右后组合灯线束连接器

1 2 3

4 5 6

7 8 9

10 11 12 13

5

Inspect the communication between the front ceiling lamp
and the BCM.

No

Repair or replace the harness.

Yes

IP48BCMharness connector

CA18 right front combination lamp harness

connector

SO24 right rearcombination lamp harness connector

1917

(a) Disconnect BCM wire harness connector

IP49.

(b) Measure resistance between front dome lamp

wire harness connector RF12 terminal 2 and
BCM wire harness connector IP49 terminal
3.

Standard Resistance: Less than 1 Ω

(c) Measure resistance value between front

celling lamp harness connector RF12
terminal2 and grounding

(d) Measure resistance between front dome lamp

wire harness connector RF12 terminal 3 and
grounding.

Standard Resistance: More than 10 Ω or higher

Confirm if the resistance conforms to standard

value.

NL11-3218b

1

2

3

4

5

6

1

2 3

4 5 6

7

8 9 10

11 12 13 14 15 16 17 18 19 20

IP49BCM线束连接器

RF12前顶灯线束连接器

6

Replace the BCM

(a) Replace BCM and refer to

Replacement of BCM in 11.8.8.1

.

Confirm the completion of repair.

7

The system is normal.

No

Repair or replace the harness.

Yes

Next

IP49 BCMharness connector

RF12 front ceiling lamp harness connector

1918