Chery SQR 7160 sedan. Manual — part 3
5. MK20-I/E SYSTEM
5.1 Checking ABS warning light
Check if ABS warning light is as following:
Ⅰ.When ignition turned ON, ABS goes on for about 1.7 senconds,then goes off。
Ⅱ. If ABS warning light is not as specified, a problem is indicated and the fault code must be retrived.
Ⅲ. If ABS warning light does not go on after igniton turned on, repair problem referring to FAULT W/O CODE
DIAGNOSTIC CHART.
5.2 Reading condition information
After turning on scan tool, enter 03 at ADDRESS, press Q , following data will be displayed:
1.Example,ECU No. and Version No.
1JO 907 379P ABS MK20I/E
2. Code (Codierung) :×××××
3. Factory code (WSC) :×××××
5.3 Retriving Fault Code
Enter 02 at FUNCTION SELECT, press Q, fault number will be displayed. Then press “→”, fault code
and related information of each fault will be listed.
5.4 Clearing Fault Code
Enter 05 at FUNCTION SELECT, press Q, fault code will be cleared. If failed to clear the code, the fault is a hard
fault. If stored code can be cleared, it indicates an intermittent fault, which can be detected only during a vehicle drive
test.
5.5 Fault Code Display Method
System Problem
Displayed Code
Never happened before
No fault code
No problem so far
(ABS warning light is off)
Happened sometime before
Intermittent code
Never happened before
Not intermittent code
Still exist so far
(ABS warning light is on)
Happened sometime before
Intermittent code AND
Not intermittent code
5
6. Hydraulic Controlled Unit Diagnostic
6.1 Hydraulic controlled unit can be diagnosed using scan tool. Follow below
procedures after entering 03.
Step Action
Taken
Data
Displayed
Resullt Under Normal
Condition
01
Hydraulish ABS Pumpe V64
(Hydraulic pump test)
02
Bremse Bestatigung
(Depress brake pedal)
03
EVL:0V AVL:0V Rad blockiert
(Normal Open Valve:0V
Normal Closed Valve: 0V Wheel Block?)
Wheel Block
04
EVL:UBAT AVL:0V Rad blockiert
(Normal Open Valve:POWER ON
Normal Closed Valve:0V Wheel Block?)
Wheel Block
05
EVL:UBAT AVL:UBAT Rad frei
(Normal Open Valve:POWER ON
Normal Closed Valve:POWER ON Wheel can spin
freely)
Wheel can spin freely;
pedal kick back; pump
motor running sound can
be heard.
06
EVL:UBAT AVL:0V Rad frei
(Normal Open Valve:POWER ON
Normal Closed Valve:0V Wheel can spin freely)
Wheel
can
spin
freely;
07
Depress Brake Pedal
And Keep Depressed
EVL:0V AVL:0V Rad blockiert
(Normal Open Valve:0V
Normal Closed Valve:0V Wheel block?)
Wheel Block,
Pedal descent silghtly
08
Realse Brake Pedal
Bremwd losen (Release Brake Pedal)
6.2 Perform above test procedures on each wheel.
Sequences : LF→RF→LR→RR.
6
7. Quick Fault Repairing Index
7.1 Fault w/code check chart index
Code
Fault description
Diagnosing object
Check chart No.
Page No.
65535
Electronic controlled unit
Defective
P.29
01276
ABS Hydraulic pump
Inoperative motor
1
P.12
00283
LF Wheel Speed Sensor
00285
RF Wheel Speed Sensor
00290
LR Wheel Speed Sensor
00287
RR Wheel Speed Sensor
Electrical and
mechanical problem
2,3,4 P.13,P.14,P.15
01044
ABS wrong programing
5
P.16
00688
Voltage supply terminal 30
6
P.17
01130
ABS abnormal operating
Unreasonable signal
7
P.18
7.2 Fault w/o code check chart index
Problem Sympton
Check chart No.
Page No.
Igniton turned to ON position (engine off), ABS warning light is off
1
P.19
After engine running, ABS warning light does not go off.
2
P.20
Uneven two sides’ brake force
Insufficient brake force
ABS operate when slightly depress brake pedal
(Vehicle is stationary)
ABS operate when slightly depress brake pedal
(Vehicle is operating)
Abornal
ABS operating
Brake pedal vibrate heavily when ABS operating
3 P.21
Brake pedal travel too long
4
P.22
Brake pedal depressing need a great force.
5
P.23
No fault code output (does not communicate with scan tool).
6
P.24
7
8. ABS ECU SOCKET
8
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