Chery A15. Manual — part 218

Chery A15 Maintenance Manual

VI. Troubleshooting Fast Index

(1). Coded Fault Checklist Index

Diagnosis Code

Fault Description

Diagnosis

65535

Electronically controlled

unit (ECU)

Damaged

01276

ABS hydraulic pump

Motor disabled

00283

Front left wheel sensor

00285

Front right wheel sensor

00290

Rear left wheel sensor

00287

Rear right wheel sensor

Electrical/mechanical

fault

01044

ABS coding error

00668

Power terminal 30

01130

ABS malfunction

Improper signal

(2). Uncoded Fault Checklist Index

Fault Description

ABS warning light is not on when ignition switch is turned to “ON”

(engine off)

Warning light dose not go out after engine is started

Uneven brake power distribution

Insufficient brake power

ABS actuated with slight operation of brake pedal

(vehicle stopped)

ABS actuated with slight operation of brake pedal

(vehicle moving)

ABS malfunction

Severe vibration of brake pedal when ABS works

Excessive brake pedal travel

Large force required to operate brake pedal

No fault code displayed (communication with fault diagnoser disabled)

Chery A15 Maintenance Manual

VII. Coded Fault Checklist

1. ABS Hydraulic Pump

Possible Cause

1. Fault Code 01276
[Description]
This code will be recorded by ABS ECU if motor malfunction is
found when vehicle speed exceeds 20km/h.
[Tip]
The fault may be caused by loose wire harness connection
between motor and ECU. Fault diagnoser may be used to drive
the motor to test hydraulic control unit function.

·

Power off or earthed

·

Loose motor wire harness

·

Damaged motor

Note: Overdischarged battery will not be able to drive the motor, therefore

battery voltage shall be measured before motor driving test. Motor driving test

shall be performed with vehicle being stationary.

Abnormal

Replace hydraulic control unit

Normal

Unplug motor wire harness and directly
connect battery power to motor plug, check
if the motor works

Abnormal

Replace fuse or wire harness

Normal

Replace ECU

No

Check fuse and ABS ECU adapter

Connect motor wire harness

Ignition switch “ON”

Clear fault code

Diagnose hydraulic control unit with diagnoser

Dose fault reoccur?

Yes

Refer to Incidental Fault Repair Instruction

Chery A15 Maintenance Manual

2. Wheel Speed Sensors: 00283, 00285, 00290, 00287

Possible Cause

2 Fault Code 00283, 00285, 00290, 00287
[Description]
This code will be displayed when no open circuit is
detected while no signal is output with the vehicle speed
exceeding 20km/h.
[Tip]
The fault may be caused by missed sensor, short circuit of
sensor coil or wire harness, oversized air gap between
sensor and gear ring or damaged gear ring.

·

Sensor missed when assembling

·

Short circuit of sensor coil or wire

harness·

·

Oversized air gap between sensor

and gear ring·

·

Gear ring missed when

assembling

·

ABS ECU fault

No

Are sensors properly installed？

Install properly

Yes Abnormal

Normal

Replace ABS ECU

Check wire harness between

sensor and ABS ECU

Check all sensor gear rings

Check wheel bearing clearance

Check all sensors

Check sensor output voltage

at ABS 25-pin socket

Replace

Abnormal

Abnormal Replace

Abnormal

Repair or
replace

Chery A15 Maintenance Manual

3. Speed Sensors

Possible Cause

3. Fault Code 00283, 00285, 00290, 00287
[Description]
This code will be displayed when sensor signal exceeds
tolerance limits with the vehicle speed > 20km/h.
[Tip]
The fault may be low signal caused by intermittent poor
contact or short circuit of sensor coil or wire harness,
damaged gear ring or oversize air gap between sensor and
gear ring.

·

Intermittent poor contact or short

circuit of sensor coil or wire
harness·

·

Oversized or undersized air gap

between sensor and gear ring

·

Damaged gear ring

·

ABS ECU fault

No

Are sensors properly installed？

Install properly

Yes Abnormal

Normal

Normal

Replace ABS ECU

Check all sensor gear rings

Check all wheel sensor gear rings

Check sensor output voltage

at ABS 25-pin socket

Replace

Abnormal

Replace

Abnormal

Normal

Normal

Check wheel bearing clearance

Abnormal

Repair or
replace

Check wire harness between

sensor and ABS ECU