Chery B11. Manual — part 231

Chery·Maintenance Manual for Oriental Son

Automatic Transmission

Checking Sequence 14
Poor acceleration

Possible cause

Acceleration ability is poor even if the car is
geared down during traveling. The reason is
possibly trouble in engine, brake or clutch.

Engine trouble
Clutch or brake trouble

Checking Sequence 15

ibration

Possible cause

Check the engine
Check the ignition system,
fuel system and main
machine sy tem

Repair, replace

s

V

There is vibration during constant-speed
traveling or acceleration/deceleration at highest

ear. In that case, the reason is possibly

normal pressure of damp clutch or trouble in

engine, damp clutch control solenoid valve,
hydraulic torque converter or valve body.

Abnormal pressure of damp clutch
Engine trouble
Damp clutch control solenoid valve trouble
Hydraulic torque converter trouble
Valve body trouble

g
ab

检查顺序 16

Checking Sequence 16

Check the brake or clutch
Check if there are any
surface burns, damages of
piston seals and interference
by the jacket.

Norma

Abnormal

l

MUT-Ⅱ Actuator test
Serial No. 6 damp clutch control
solenoid valve
Normal: actuation noise can be
heard

Replace damp clutch control solenoid
valve

Does the same problem occur
after the oil temperature sensor is
detached?

Check the engine
Check the control system, ignition
system, fuel system and main machine
system

Oil pressure test (refer to Page 23-
51)
Measure damp clutch pressure
Standard value: refer to Page 23-
52

Disassemble, clean and reassemble the
valve body
Pay special attention to loosened bolts and
damaged O-rings and valve body
Replace the valve body assembly in the
case of damage that can’t be repaired

Replace hydraulic torque
converter assembly

Abnormal

Norma

No

Abnormal

Yes

Normal

l

92

Chery·Maintenance Manual for Oriental Son

Automatic Transmission

Manual-gear-shifting-protective switchgear

Possible cause

system

The reason is possibly trouble in manual-gear-
shifting-protective switchgear circuit, ignition
switch or A/T-ECU.

Manual-gear-shifting-protective switch trouble
Ignition switch trouble
Connector switch
A/T-ECU trouble

Checking Sequence 18

le speed position switchgear system

Possible cause

Id

The reason is possibly trouble in idle speed

osition switch or A/T-ECU.

Idle speed position switch trouble
Connector trouble
A/T-ECU trouble

p

Check the manual-gear-shifting-
protective switch (refer to Page 23-45)

Check the voltage of manual-gear-
shifti

ective switch connector

B-72
Detach the connector and measure
voltage between wiring side Terminal
8 and ground circuit

ng-prot

Normal: storage battery voltage

Check the following
connectors: C-49, C-
56, C-83, C-131, C-
134

Check the following connectors
B-72, C-30

Check the electric wiring
Between manual-gear-
shifting-protective switch
and medium connector
Between medium
connector and the
ignition switch

Check the electric wiring
Between manual-gear-shifting-
protective switch and A/T-ECU
connector

Check fault symptoms

Check the ignition switch

Check fault symptoms

Replace A/T-ECU

Abnormal

Normal

Normal

Abnormal

Abnorm l

a

Normal

Normal

Abnormal

Abnormal

Abnormal

Abnormal

Repair

Repair

Repair

Replace

Repair

Check the idle speed position switch

Replace the throttle position
sensor

Check the following connectors:
B-07 B-29 B-47

Check electric wiring
Bad contact between idle speed
position and A/T-ECU

Check fault symptoms

Replace A/T-ECU

Abnormal

Abnormal

Repair

Repair

Abnormal

Normal

Normal

Normal

93

Chery·Maintenance Manual for Oriental Son

Automatic Transmission

Checking Sequence 19
Double pressure switchgear system

Possible cause

The reason is possibly trouble in double
pressure switch circuit or bad contact of A/T-
ECU

ouble

A/C system trouble
A/T-ECU trouble

Double pressure switch tr
Connector trouble

Checking Sequence 20

Check the double
pressure switch

Check the voltage
between A/T-ECU and
connector C-28
Detach the connector
and check the wiring
side
Ignition switch: ON
A/C switch: ON
Voltage between
Terminal 10 and
ground ci

t

rcui

Normal: storage
battery vo

e

ltag

Check A/C system

Check the following
connectors: A-35,
C-14, C-28, C-67,
C-116

Check fault symptoms

Check A/C system

Replace A/T-ECU

Abnormal

Normal

Abnormal

Normal

Abnormal

Normal

Normal

Abnormal

Abnormal

Repair

Repair

Replace

94

Chery·Maintenance Manual for Oriental Son

Automatic Transmission

95

Car speed sensor system

Possible cause

The reason is possibly car sped sensor circuit
trouble or bad contact of A/T-ECU

Car speed sensor trouble
Connector trouble
A/T-ECU trouble

Check the car speed sensor

Measure at Terminal B-67 of the car
speed sensor
Detach the connector and measure the
wiring side
Voltage between 1 and the ground
circuit (ignition switch: ON)
Normal: storage battery
Voltage between 3 and the ground
circuit (ignition switch: ON)
Normal: 4.8-5.2V
Connection between 2 and the ground
circuit
Normal: connected

Check the following connector: B-67

Check fault symptoms

Check the wiring
between engine-
ECU and car
speed sensor

Replace engine-ECU

Check the following
connectors: C-90, C-
131 C-135

Check fault symptoms

Check wiring between
car speed sensor and
ignition switch connector

Check the ignition switch

Check the following
connector: C-30, C-47

Check fault symptoms

Check the wiring between
engine-ECU and car speed
sensor connector

Replace engine-ECU

Check wiring between car speed sensor
and grounding, and repair if necessary.

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

Abnormal

Normal

Normal

Abnormal

Normal

Abnormal

Normal

Abnormal

Normal

Abnormal

Abnormal

Normal

Abnormal

Normal

Repair

Repair

Repair

Repair

Repair