Chery B11. Manual — part 82

CHERY Automobile Maintenance Manual

49

3.Terminal Voltage Check

Terminal

No.

Check

Item

Check Condition (Engine

Status)

Normal Status

A01

1st Cylinder Injector

A14 2nd Cylinder

Injector

A02 3rd Cylinder

Injector

A15 4th Cylinder

Injector

Step on accelerator pedal

suddenly when idle running

after engine preheat.

Suddenly the voltage

decreases partially from

11-14V

A04

Stepper Motor Coil

A

A17

Stepper Motor Coil

B

A05

Stepper Motor Coil

C

A18

Stepper Motor Coil

D

Engine: Start engine

immediately after preheat

System Voltage-0V (Change

frequently)

Ignition Switch ：ON

System Voltage

A06 EGR

Solenoid

Valve

Step on accelerator pedal

suddenly when idle running.

System voltage decrease

suddenly

Ignition Switch ：ON

System Voltage

A08

Fuel Pump Relay
（

ECU without

Anti-Theft）

Engine at idle speed

0-3V

Ignition Switch ：ON

System Voltage

A09 Purge

Solenoid

Running at 3000rpm after

engine warming up

0-3V

A10 Ignition

coil-No.1,

No.4(Power

Transistor)

0.3-3.0V

A23 Ignition

coil-No.2,No.3(Power

Transistor)

Engine 3000 rpm

0.3-3.0V

A12

A25

Power Supply

Ignition Switch ：ON

System Voltage

Engine：Idle Speed

0-1V

A19

Signal Re-setup of

Mass Airflow Sensor

Engine：3000rpm

6-9V

Radiator fan and condenser off

0-0.3V。

A21 Fan

Controller

Radiator fan and condenser on

Above 0.7V

Engine：Idle Speed

A22 A/C

Relay

Air Conditioner Switch：OFF
→ ON( when air conditioner

compressor is running)

System voltage or

instantaneous voltage 6V

above→0-3V。

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A24

A/C switch 2

Refer to diagnostic troubleshooting (A/C ECU terminal check,

Engine ECU output terminal check)

Terminal

No.

Check Item

Check Condition (Engine Status)

Normal Status

1 、 Engine:Preheted ， Idle Speed
（Radiator fan：OFF）

2、Frontal Light：OFF→ON

3、Rear defroster light switch :OFF
→ON

B03

Alternator G

Terminal

4、Stop Light：ON

The voltage increases

0.2-3.5V

B06

Engine warning

light

Ignition Switch ：OFF→ON 0-3V → 9-13V after some

seconds

Steering

anding

st

System Voltage

B07

Power Steering

Switch

Engine:Idle

running after

preheated

Steering

rotating

0-3V。

Ignition Switch ：OFF

System Voltage

B08

Control

Relay(Power

Supply)

Ignition Switch ：ON

0-3V

1、Engine:Preheater，Idle Speed
（Radiator fan：OFF）

2、Front Light：OFF→ON

3、Rear Defroster Light Switch：

0FF→ON

B11

Alternator FR

Terminal

4、Stop Light：ON

The voltage increases

0.2-3.5V

A/C Switch：OFF

0-3V

B15 A/C

Switch

Engine

Idle

Speed

A/C Switch：ON
（Compressor On）

System Voltage

Engine: Idle running after preheat

0-3V

C10 Oxygen

Sensor

（ Front ） Heater

Control Signal

Engine:5000rpm System

Voltage

C08 Tachometer

Signal

Engine Speed：3000rpm

0.3-3.0V

D01 Ignition

Switch

－ST

Engine:Start on

Above 8V

Coolant

Temperature 0
℃

3.2-3.8V

D13

Coolant

Temperature

Sensor

Ignition Switch ：

ON

Coolant

Temperature

20℃

2.3-2.9V

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Coolant

Temperature

40℃

1.3-1.9V

Coolant

Temperature

80℃

0.3-0.9V

D12 Ignition

Switch

－IG

Ignition Switch ：ON

System Voltage

Coolant

Temperature 0
℃

3.2－3.8V

Coolant

Temperature 20
℃

2.3-2.9V

Coolant

Temperature 40
℃

1.5-2.1V

D02

Intake

Temperature

Sensor

Ignition

Switch ：ON

Coolant

Temperature80
℃

0.4-1.0V

Throttle’s idle

speed postion

0.3-1.0V

D14 Throttle

Position

Sensor

Ignition

Switch ：ON

Throttle wide

open

4.5-5.5V

D06 Oxygen

Sensor

（Front）

Engine: running at 2000rpm after

preheat(Check with digital

voltmeter)。

0-0.8V (Change frequently)

D05 Oxygen

Sensor

（Rear）

Engine:running at 2000rpm after

preheat(Check with digital

voltmeter)。

0-0.8V (Change frequently)

Altitute height is

0m

3.7-4.3V

D15

Barometric

Pressure Sensor

Ignition

Switch ：ON

Altitude Height：

1200m

3.2-3.8V

Terminal

No.

Check Item

Check Condition (Engine Status)

Normal Status

Move vehichle forward slowly

D16 Speed

Sensor

Ignition Switch ：ON

0-5V （Change frequently）

Throttle is

adjusted to idle

speed postion

0-1V

D17

Idle Speed

Postion Switch

Ignition

Switch ：ON

Throttle partial

open

Above 4V

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Engine:Running 0.4-3.0V

D18 Cam

Position

Sensor

Engine:Idle Speed

0.5-2.0V

Engine:Running 0.4-4.0V

D19 Crank

Angle

Sensor

Engine:Idle Speed

1.5-2.5V

Engine:Idle Speed

D20 Mass

Air

Flow

Sensor

Engine:Speed：2500rpm

2.2-3.2V

4.Check Resistance and Conductivity between terminals

1. Turn ignition switch to OFF.

2. Remove harness joint of engine ECU.

3. Measure and check resistance and conductivity between every terminals of harness side joint of

engine ECU according to check table.

Note：

(1) When checking terminal’s resistance and conductivity, you must use special check cable in

stead of normal check stick to avoid affacting terminal contact pressure.

(2) You needn’t check them according to the sequence of check table.

Caution

If plug terminals incorrectly or joint terminals are short ground incorrectly when checking

resistance and conductivity between terminals, body cable, sensor, ECU or ohmmeter may be

destoryed. So, please be careful.

4. If the result value of ohmmeter is different from standard value, please check related sensor, actuator

and cable. If necessary, please repair or replace it.

5. Check and confirm if the malfunction is removed with ohmmeter after repair or replacement.