Chery SQR 7160 sedan. Manual — part 129

(3) Unstable idle speed

No. Problem

Causes

Actions

Air leakage

Fasten throttle valve body mounting screw.

Failed idle control valve

Repair or replace the throttle valve body

Failed throttle position

sensor

Check throttle opening. Check if throttle position

sensor operating parameter within specification.

Check if throttle cable installed correctly.

Move throttle and check if throttle stuch.

Check throttle opening (angle is within 0~0.6 at

throttle is closed)

1

throttle

valve

body

Abnormal throttle

opening

If throttle angle is correct, check if throttle position

sensor connector contact is good.

Wiring

diagram

Key words

1.ECU anti-theft device

13.coolant temperature sensor

2.knock sensor

14.coolant temperature meter

3.ignition coil

15.coolant overheat indicator

4. fuel pump

16.idle step motor

5.fuel injector

17.Top Dead Center/speed sensor

6.oxygen sensor

18.A/C

7.carbon canister solenoid

19.Fan relay (first stage speed)

8.ignition switch

20.Fan relay(second stage speed)

9.System failure warning indicator

21.diagnostic socket

10. speedometer

22.relay

11.air pressure/temperature sensor

22.relay

12 throttle position sensor

23.battery

Diagnostic Socket

Vehicle is equipped with lots of ECU self-diagnostic functions; therefore a single

16-pin connector (called EOBO type connector) is used for performing self-diagnostic.

Connect diagnostic socket and tester with an appropriate adapter. Select specified diagnostic

cable upon used ECU.

Appendix 2：Electrical Components Specification

Part ： Electrical

fuel injector

Code：IWP116

Internal expanded view

Specification：

Fuel injector shape, single hole

Operating temperature：-30℃～+110℃

Nominal resistance：13.8～15.2Ω10%(at

20℃)

voltage：12V

fuel injection pressure：3.5bar

Part ： Throttle

valve position

sensor

(irreplaceable)

code：IPF2C

Internal expanded view

A=Negative

B=Power supply (+5V)

C=signal

Specification：

Effective electric power angle：90°±2

Mechanical angle：105°±4°

Full mechanical travel：110°±8°

Temperature operating range：-30℃～

+125℃

Resistance between A and B =1200Ω

20%(at 23℃)

Part：Electric fuel

injector

Code：BQE02

Internal expanded view

Specification：

Primary coil resistance (A-B or C-B)

0.4Ω±10%(at 23°±5°)

HTtap secondary coil resistance (1—4

cylinder or 2—3 cylinder)；

4900Ω10%(at 23°±5°)

Connector

Connect

or

Connect