Chery A11 2003 - User Manual

CIRCUIT
FOREWORD
New style wiring harness is designed upon chery sedan wiring harness-updating plan
approved by Chery Auto Co., LTD in July 2001. According to updated plan, concentrated control
in central electrical box is replaced with a nearby control method in design, enhancing circuit
performance, avoiding internal resistance and heat sources interference between electrical
devices and increasing the whole vehicle wiring harness reliability and endurance.
During updating, some structures and features on home and abroad famous brand name
vehicles are used for reference or equivalently taken as follows:
1. Adding whole vehicle electrical devices problem automatic safety-protect unit, which
ensure whole circuit system being cut off when sudden accident occurs to avoid possible fire
hazard or other injury from short problem.
2. Selecting a new central electrical box mainly used for whole vehicle control circuit, in
which there are 6 built-in mini relays, 24 type fuses, 3 intensive safety protect units and 58
external connecting points.
3. High current and power electrical devices are nearby controlled, such as fan and A/C
control circuit are directly completed at front compartment harness, shortening the current path.
Comparing with old wiring harness, main changes in wiring harness and electrical devices
are as follows:
Interior harness, front compartment harness, I/P (instrument panel) harness, battery positive
harness, central electrical box, two front and rear fog light switches instead of one switch on old
vehicle, and also relevant changes in ABS harness connector.
But control theory and whole vehicle harness routing mainly keep unchanged.
Only whole vehicle electrical devices theory illustrations are available in this manual and
there exists difference with actual electrical devices circuit. For convenience of compiling and
printing, some big circuits page are divided into several small pages, which will take
inconveniences when reading and therefore will require the user have a good command of
circuits on SQR710 sedan.
For compilers’ knowledge and time limits as well as rapid technology updating, some
errors and oversights are hard to avoid and kindly appreciate for users’ pointing out with the idea
of improving together. Electrical system are rapidly updated, therefore some new circuit are not
compiled on this manual on the time of publishing and will be supplemented timely.
This manual is compiled by Chang Yongjiu, Yao Shen and reference books are supplied by
product department.
Written by compilers
November 2002

Chery A11 2003 Specifications

General

Brand	Chery
Model	A11 2003
Category	Automobile
Language	English

Summary

Vehicle Electrical Systems

Central Electrical Box

Diagrams illustrating the location of fuses and relays within the central electrical box in the cabin.

Engine Electrical System

Overview of the vehicle's electrical system components, including battery, alternator, starter, and ignition.

EFI System Components

Details on sensors and ECUs used in the EFI system, including pin definitions and diagrams.

EFI System Failure Diagnosis

Explains EFI system failure diagnosis principles, including fault information records and types.

ABS System

Covers the ABS system, its components, operation, and basic functions.

Engine and Transmission Systems

Transmission Technical Parameter

Lists key technical specifications for the transmission, including gear ratios, fluid capacity, and dimensions.

Engine Removal and Assembly Procedure

Provides step-by-step instructions and diagrams for removing and installing engine components, including timing.

4 HP14 Automatic Transmission Fault Diagnosis

Covers common faults and troubleshooting steps for the 4HP14 automatic transmission.

Brief introduction of automatic transmission’s structure and working principle

Provides a general overview of the automatic transmission's internal structure and how it operates.

M7.9.7 EFI System

Intake Pressure and Intake Air Temperature Sensor

Details the purpose, composition, and troubleshooting of the MAP/IAT sensor in the EFI system.

Throttle Position Sensor

Explains the function, composition, and troubleshooting of the TPS sensor in the EFI system.

Electronic Control Unit (ECU)

Describes the ECU's role, functions, composition, installation, and troubleshooting for the EFI system.

EFI System Failure Diagnosis

Outlines the fundamental concepts for diagnosing EFI system failures, including fault records and types.