Chery QQ6 (S21) / S12LHD. Manual — part 58

1. Control principle

The electric rear-view mirrorr is controlled by a switch, without any relay. When the L

position is selected, the Nos 2 and 3 circuits form a loop respectively with the internal circuit of

the switch. Take the Y1 direction as an example, when pushing the switch in the Y1 direction, the

switch connects to the power supply from F19 while the power supply connects with the No 2

circuit (with Nos 2 and 3 circuits when the switch is in L position). So, the current flows across the

motor, goes through No 3 circuit and then gets to the ground. Similarly, when the switch is in R

position, the Nos 4 and 5 circuits connect to the corresponding circuit and form a loop.

VII. Wiper Motor Control

Wiper Intermittern Relay

Front Wiper
Motor

Front
Washer
Motor

WASHER

HIGH

LOW

FRONT
RETURN

POWER

WIPER SWITCH

09

Ka

15a

15

30a

30

POWER

1. Control principle

This wiper system’s control is a switch type one while the intermitten control adopts the

intermitten relay. The wiper motor is grounded itself. When the switch is in the Low Speed

position, the wiper switch is used to connect the power supply from F19 with the No 1 terminal of

the wiper motor, and the wiper starts to operate at low speed. When the switch is in the High

Speed position, the wiper switch is employed to connect the power supply from F19 with the No 2

terminal of wiper motor so as to enable the wiper motor to operate at high speed. When the switch

is in the Intermittent posistion, the wiper switch is used to connect the power supply from F19

with the No 7 terminal of the switch, which offers the base electrode of triode of intermittent relay

the power supply. The triode controls the internal switches to make the power supply of wiper

motor 3 go through No 4 circuit and via the intermitten relay controlled switch and then get to the

wiper switch 6. Then, through the low speed circuit, the wiper motor is intermittently controlled.

2. Wiper return and stop function

In order to ensure that the wiper can return back to its original position when the wiper stops

working, there are two sets of contact mechanisms inside the wiper motor: one is return contact,

and the other is stop contact. When the wiper operates at low or high speed, both sets of contacts

are out of service. However, when the low or high speed power supply of the wiper disconnects,

the wiper motor is powered by the No 3 power supply of motor and keeps continuous operation.

When the motor operates to the specified position (the wiper blade returns back to the original

position), the No 3 power supply of wiper motor is disconnected while the No 4 applies the power

supply from F19 on the normal low level side of the wiper motor by turning on the intermittent

relay switch. In this case, it enable the motor to produce the trend of rotation in reverse. This trend

just counteracts the movement of wiper motor generated due to the inertia after power off, which

makes the motor braked immediately and stop operation.

Chapter Two Schematic Diagrams of Circuit Control

I. Definition of Main Harness Connectors

发/前（发动机线束和前仓线束插接件）

前/仪 （前仓和仪表线束的 插件）

前/仪 （前仓和仪表线束的 插件）

Engine/Compartment (Engine and Compartment Harness’s Connector)

Compartment /Instrument A (Compartment and Instrument Harness’s A Connector

Compartment /Instrument B (Compartment and Instrument Harness’s B Connector)

前/室（前仓和室内线束的插件）

针脚定义

针脚定义

室/仪 （室内线束和仪表线束的 插件）

Compartment /Interior (Compartment and Interior Harness’s Connector)

Interior/Instrument B (Interior Harness and Instrument Harness’s A Connector)

Definition of ECU Pin

Definition of ABS Pin