10.2.4.16 DTC B1218 

Fault diagnosis code Descriptions 

B1218   

Open circuit incurs on co-pilot-side electric window driving. 

Circuit diagram: 

B

8

7 IP47

M

DR02

A DR02

B

15

14 IP47

M

DR11

A DR11

IP47

IP47

LF-WINDOW

DOWN

RF-WINDOW

DOWN

RF-WINDOW UP

LF-WINDOW UP

BCM

左前玻璃升降电机

右前门窗升降电机

NL11-3222b

 

Diagnostic Steps: 

1 

Inspect whether there is any DTC Code other than B1218. 

(a)  Inspect whether there is any DTC Code other than B1218. 

 

 

 

2 

Inspect the upshift voltage of the right front glass lifting 
motor. 

Yes 

Go to 

DTC list in 10.2.4.2

 and 

repair according to trouble 
codes. 

No 

Left frontglass lifting 

motor 

Right front door and 

window lifting motor

1935

 
 

(a)  Turn on right front glass lifter switch to lift 

right front glass. 

(b)  Measure voltage of right front side glass lift 

motor harness connector DR11 terminal. 

Standard Voltage: 11-14 V 

Is voltage the Standard Value? 

NL11-3226b

A

B

DR11右前玻璃升降电机线束连接器

 

 

 

 

 

3 

Inspect the downshift voltage of the right front glass lifting 
motor. 

(a)  Turn on right front glass lifter switch to 

lower right front glass. 

(b)  Measure voltage of right front side glass lift 

motor harness connector DR11 terminal 

Standard Voltage: 11-14 V 

Is voltage the Standard Value? 

NL11-3227b

A

B

DR11右前玻璃升降电机线束连接器

 

   

 

 

 

4 

Inspect the communication of the right front glass lifting 
motor and the BCM. 

No 

Go to step 4 

Yes 

No 

Go to step 5 

Yes 

DR11Right frontglass lifting motor harness 

connector

 

DR11 right frontglass lifting motor harness connector

1936

 
 

(a)  Turn the ignition switch to OFF position. 

(b) Disconnect Left front glass lift motor 

harness connector DR11. 

(c)  Disconnect BCM harness connector IP47. 

(d)  Measure left front glass lifter motor wire 

harness connector DR11 terminal A and 
BCM wire harness connector IP47 terminal 
14. 

(e)  Measure resistance between left front glass 

lifter motor wire harness connector DR11 
terminal B and BCM wire harness 
connector IP47 terminal 15. 

Standard Resistance: Less than 1 Ω 

Is the resistance at a specified value? 

NL11-3228b

A

B

DR11右前玻璃升降电机线束连接器

IP47BCM线束连接器

5 6 7 8

9 10 11 12

13

14 15 16 17

1

2 3 4

 

 

 

 

5 

Replace right front side glass lift motor . 

(a)  Replace right front side glass lift motor, refer to

11.4.8.5 left front glass lifter motor replacement

. 

(b)  Clear DTC, and read DTC again 

Whether fault code exists or not 

 

 

 

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. 

 

Next 

No 

The system is normal. 

Yes 

Yes 

Go to step 6 

No 

IP47BCMharness connector

 

DR11 right frontglass lifting motor harness connector

1937

 
 

10.2.4.17 DTC B1220 

Fault diagnosis code Descriptions 

B1220   

Open circuit incurs on left rear electric window driving. 

Circuit diagram: 

12

10 IP47

2 IP47

B

M

DR23

A DR23

左后门升降电机

右后门升降电机

4 IP47

IP47

B

M

DR33

A DR33

RL-WINDOW

DOWN

RL-WINDOW UP

BCM

RR-WINDOW

DOWN

RR-WINDOW-UP

NL11-3229b

 

Diagnostic Steps: 

1 

Inspect whether there is any DTC Code other than B1220. 

(a)  Inspect whether there is any DTC Code other than B1220. 

 

 

 

2 

Inspect the upshift voltage of the left rear side glass lifting 
motor. 

Yes 

Go to 

DTC list in 10.2.4.2

 and repair according to 

trouble codes. 

No 

Left rear door 

lifting motor

Right reardoor 

lifting motor

1938