Chery SQR 7160 sedan. Manual - part 6

 

 

 

 

11. FAULT W/O CODE DIAGNOSTIC CHART   

1 

Ignition On (Engine off), ABS warning light is not on 

Possible causes 

［Note］ 

ABS warning light not on maybe caused by open warning light voltage 

circuit, burned bulb or damaged warning light control unit. 

● blown fuse 

●  burned ABS warning light blub 

●  open voltage circuit 

●damaged ABS warning light control 

unit. 

 

 

Check ABS warning light fuse at

central electrical box. 

OKAY

No okey

Replace fuse.

Check central electrical box fuse socket.

Not okey   

OKAY

Replace fuse socket 

Remove ABS ECU connector

Ignition: ON position 

Is warning light on? 

YES

NO 

Check if ABS   

warning light burned?

YES 

NO

Replace 

Check if wire connecting ABS

warning light control unit and ECU

short to ground? 

YES

Replace electrical harness 

Check if there is open circuit in

ABS electrical harness voltage

and ground circuit?

Normal

Not normal   

Replace wiring harness 

Check ABS warning light voltage

and ground circuit connector. 

Not normal 

Normal

Repair connector 

NO

Go to   

INTERMITTENT 

FAULT DIAGNOSTIC 

Does fault appear again? 

YES

Replace ABS warning 

  light control unit 

17 

 

 

 

 

2 

Engine, ABS warning light does not go off 

Possible causes 

［Note］ 

Possible causes: 

defective ABS warning light control unit or open ABS warning light ciucuit. 

●defective warning light control unit 

●open ABS warning light control unit.   

● defective ABS ECU. 

 

Note:  

This code only applies to a condition under which there is communication between system and scan tool (ABS voltage 

supply is ok) and no code set. 

 

Check if there is open wire between

ECU and ABS warning light control

unit. 

YES

Replace wiring harness. 

NO

Replace 

Not normal

OKAY 

Check ABS warning light control unit. 

Replace ABS ECU 

18 

 

 

 

 

 

 

3 

Abnormal ABS Opearation 

Possible Causes: 

［Note］This problem has a close relation with driving and road surface 

condition, and it is hard to diagnose. If no code set, perform following check: 

●Sensor not correctly installed 

●Sensor wiring harness has problem 

●damaged sensor 

●damaged gear ring 

●foreign material on sensor 

●damaged wheel bearing 

● damaged ABS HCU (hydraulic 

unit) 

● damaged ABS ECU (electronic 

controlled unit) 

 19 

 

 

 

 

NO 

Sensor installed correctly?

Reinstall sensor. 

YES 

Check sensor output voltage

Not normal

Check each sensor 

Replace 

Normal

Normal 

Not normal

Repair or replace 

Normal

Check ABS ECU socket and

central connector 

Not normal 

Normal

NO

Go to INTERMITTENT

FAULT DIAGNOSIS   

YES

Repair wiring harness 

or connector 

No normal

Replace ABS ECU 

YES

Remove ABS ECU. 

Check if resistance between

following terminals is within

1.0~1.3 KOhm? 

LF: 1-2 

RF: 19-20 

LR: 5-6 

RR: 22-23 

Wiggling sensor wiring harness

and connector while measuring. 

Does fault appear again? 

Repair connector 

Check wheel bearing gap 

Replace 

Not normal

Check each sensor gear ring

Not normal

Normal

Perform HCU DIAGNOSTIC
using scan tool 

Not normal

Replace ABS ECU 

 

 

 

 

 

 

 

20