Chery QQ6 (S21) / S12LHD. Manual — part 123

Page 17 of 38

of which the operation method is same with that of the trouble code diagnosis.

In addition, when the ECU of the ABS has no trouble code, ground the line L and rotate the
key to the power on position. The flashing of the ABS warning lamp is conducted in
accordance with the type in following figure, of which the symbol meaning is same with the
foregoing section.

2.4 Trouble Checklist of Trouble Code

①

Contents of Trouble Code

Trouble

code

Contents

Trouble

code

Contents

C1 200

(11)

Open-circuit/short-circuit of left
front sensor

C1 206

(31)

Open-circuit/short-circuit of left rear
sensor

C1 201

(12)

Interference of left front sensor or
gear ring

C1 207

(32)

Interference of left rear sensor or gear
ring

C1 202

(13)

Air gap error of left front sensor

C1 208

(33)

Air gap error of left rear sensor

C1 203

(21)

Open-circuit/short-circuit of right
front sensor

C1 209

(41)

Open-circuit/short-circuit of right rear
sensor

C1 204

(22)

Interference of right front sensor
or gear ring

C1 210

(42)

Interference of right rear sensor or
gear ring

C1 205

(23)

Air gap error of right front sensor

C1 211

(43)

Air gap error of right rear sensor

C1 101

(51)

Battery voltage too high (above
17V)

C2 112

(54)

Trouble of electromagnetic valve fuse
or electromagnetic relay

C1 102

(52)

Battery voltage too low (below
9.4V)

C2 402

(55)

Trouble of motor fuse or motor

C1 604

(53)

Trouble of ECU internal circuit or
electromagnetic valve coil

Line L

Ignition

Switch

ABS warning

lamp

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②

Trouble checklist of trouble code

Table 1

Trouble Code

C1 200(11)

C1 203(21)

C1 206(31)

C1 209(41)

Possible Case

Open-circuit/short-circuit of sensor:
At short-circuit or open-circuit
of batter y anode or cathode of
sensor.

Note: If the malfunctions corresponding to
more than 2 trouble codes can be determined,
after the trouble codes are deleted (erasable
trouble codes), drive the vehicle to above
40km/h to determine the malfunctions to that
the trouble codes correspond and check in
accordance with the registered trouble codes
(determine the same one trouble code).

Troubleshooting
Flow

No

No

Yes

Yes

Yes

Harness

Sensor

Sensor Head

Is status good?

Remove the connector from the
harness and sensor, confirm the
assembling status, and check the
pins for deviation

Correct the connector
pins

and

correctly

assemble the connector

Is powered on?

Replace sensor

Replace HECU

Is the problem

still present?

Determine and repair
wiring broken portion or
replace wiring

Determine if the two lines between
harness side pin A and connector B
of sensor assembly are powered

Page 19 of 38

Table 2

Trouble Code

C1 202(13) C1 205(23)
C1 208(33) C1 211(43)

Possible Case

Air gap error:
Air gap too big or self short-circuit
of sensor (resistance value at 0) that
results no signal or the gear ring
not properly installed.

Note: ①The air gap refers to the gap between
the gear ring and the sensor;
② If the malfunctions corresponding to more
than 2 trouble codes can be determined, after
the trouble codes are deleted (erasable trouble
codes), drive the vehicle to above 40km/h to
determine the malfunctions to that the trouble
codes correspond and check in accordance
with the registered trouble codes (determine
the same one trouble code).

Troubleshooting

Flow

Replace sensor

Replace HECU

Is problem

still present?

Checking

complete

Yes

No

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Table 3

Trouble Code

C1 201(12) C1 204(22)
C1 207(32) C1 210(42)

Possible Cause

Interference of gear ring or sensor:
Occurred when installed with non-
standard specification gear rings.

Note: ① The sensor signal is not uniform
when the gears are adhered with engine oil
and the impurities such as slag;
② The air gap refers to the air gap between
the gear ring and the sensor;
③ If the malfunctions corresponding to more
than 2 trouble codes can be determined, after
the trouble codes are deleted (erasable trouble
codes), drive the vehicle to above 40km/h to
determine the malfunctions to that the trouble
codes correspond and check in accordance
with the registered trouble codes (determine
the same one trouble code).

Troubleshooting

Flow

Replace sensor

Replace HECU

Is problem

still present?

Checking complete

Yes

No