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