Chery A15. Manual — part 167

Chery A15 Maintenance Manual

Chapter Eight: Central Door Lock

Section One: Introduction to Central Door Lock System

Chery A15 adopts full electric-control central door lock system, which is composed of

a four-wire control module, three secondary door lock operating motors, one trunk lid

operating motor, etc. All these locks are activated and inactivated by central door lock

interlocking mechanism controlled by door lock switch at driver’s side. Central door

lock module is located in front left door.

Circuit diagram of central door lock system:

中央门锁控制器

Central door lock controller

棕

Brown

右前门锁执行电机

Front right door lock operating motor

蓝

Blue

左后门锁执行电机

Rear left door lock operating motor

黑

Black

行李箱锁执行电机

Trunk lid lock operating motor

红

Red

油箱盖锁执行电机

Fuel tank cover lock operating motor

绿

Green

右后门锁执行电机

Rear right door lock operating motor

Chery A15 Maintenance Manual

Section Two: Working Principle of Central Door Lock

Pin 4 in central module is the power supplied by constant current S18 30A fuse, pin 2

is earthing. Pin 1 and pin 3 are respectively connected to all operating motors. When

door lock switch at driver’s side is turned to OFF position, all doors are locked; when

door lock switch at driver’s side is turned to ON position, all doors are unlocked.

Section Three: Troubleshooting

1. All door locks do not work

Symptoms:

1). When locking with door lock switch at driver’s side, all locks are not activated.

2). When unlocking with door lock switch at driver’s side, all locks are not activated.

Possible Causes:

1). Constant power supply S18 30A fuse on terminal 30 burned;

2). Circuit fault with central door lock module and S18 30A fuse;

3). Poor earthing;

4). Central door lock module fault.

Action:

First check constant power supply S18 30A fuse of terminal 30 to see if it supplies

12V power, if no power supply and the fuse is normal then check circuit for problem.

If a 12V power is supplied, check the connection between fuse S18 A30 and pin 4 of

central door lock module to see if a 12V power is supplied. If no power supply check

circuit for problem, and if a 12V power is supplied, check pin 2 of central door lock

module to see if it is earthed. If no earthing check circuit for problem, and if it is

earthed, central door lock module is at fault and shall be replaced.

2. Unlocking disabled with all central door locks

Symptom:

Chery A15 Maintenance Manual

1) Unlocking is disabled with all central door locks after being locked.

Possible Cause:

1) Central door lock module fault.

Action:

Replace central door lock module.

3. Locking disabled with all central door locks

Symptom:

Locking is disabled with all central door lock after being unlocked.

Possible Cause:

Central door lock module fault.

Action:

Replace central door lock module.

4. Ohmic values of central door lock motors

Master central door lock motor (at driver’s side): 315Ω;

Door lock motors on doors: 20Ω;

Trunk lid lock motor: 10Ω.

In case of ohmic value exceeding limit or infinite ∞Ω, replace central door lock

resistor.

Chery A15 Maintenance Manual

Chapter Nine: Instruction on Pins of Electrical Units

Section One: Diagram of Engine Front Compartment

Wire Harness Assembly