Chery QQ6 (S21) / S12LHD. Manual — part 124

Page 21 of 38

Table 4

Trouble

Code

C1 101(51) C1 102(52)

Possible

Cause

Abnormal battery voltage:
Occurred when the voltage is too high or too
low

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).

T

ro

u

b

le

sh

o

o

ti

ng

F

low

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

Adjust connector pins
Correctly

assemble

connectors

Replace HECU

Replace AC

generator

Is below 9.4V?

Is above 17V?

Is status good?

Is status good?

Is between

9.4V~17V?

Check and

replace wiring

Is below 1Ω?

Check and replace

battery

Adjust

status

of

grounding terminal

① Measure the voltage
between battery terminal
(+) and (-)

Remove

harness

side

connector and measure the
voltage between pin 4 (+) and
8(-) and between pin 4(+) and
24(-) when the entire vehicle
circuits are on.

Measure the resistance
between the harness side
connector pin 4(+) and
battery (+) terminal

Confirm

the

assembling

status and pin displacement
of harness side connector pin
4, 8, and 24

Confirm

and

check

grounding status of harness
side connector pin 8 (-),
and 24 (+)

Measure the voltage between
pin 4 (+) and 8(-) and
between pin 4(+) and 24(-)
when the entire

vehicle

circuits are on.

Re-check from

item ①

Page 22 of 38

Table 5

Trouble Code

C2 402(55)

Possible Cause

Malfunction of motor fuse/motor

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

(1) After the harness side
connector is removed, confirm
if the harness side pin 25 and
the

grounding

wire

are

connected

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

Is status good?

Is status good?

Is it on?

Is it on?

Replace HECU

Is fuse (30A)

normal?

Confirm if the valve fuse
(30A) in the fuse box is
broken

Re-check from item ①

Is forced drive good?

Forced

drive the

HECU with

diagnosis instrument (valve relay and
motor start)

Adjust the connector pins and
correctly assemble connector

Confirm the assembling status and
pin displacement of pin 25 of
harness side connector

Check and replace the valve fuse

Check and replace the wiring of
harness side pin 25

Check and replace
the wiring of harness
side pin 25.

Confirm if the harness side
pin 25 and the terminal in the
fuse box are connected

Page 23 of 38

Table 6

Trouble Code

C2 112(54)

Possible Cause

Malfunction of valve fuse and relay:
a) Broken of primary relay or fuse
b) Short-circuit of primary relay

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

(1) After the harness side
connector is removed, confirm
if the harness side pin 25 and
the

grounding

wire

are

connected

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

Is status good?

Is it on?

Is it on?

Replace HECU

Is fuse (30A)

normal?

Confirm if the valve fuse
(30A) in the fuse box is
broken

Re-check from item ①

Is forced drive good?

Forced drive the HECU with
diagnosis instrument (valve
relay and motor start)

Adjust the connector pins and
correctly assemble connector

Confirm the assembling status and
pin displacement of pin 25 of
harness side connector

Check and replace the valve

fuse

Check and replace the wiring of

harness side pin 25

Check and replace
the wiring of harness
side pin 25.

Confirm if the harness side
pin 25 and the terminal in the
fuse box are connected

Page 24 of 38

Table 7

Trouble Code

C1 604(53)

Possible Cause

Malfunction of ECU internal circuit
and valve coil

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

Yes

No

Replace HECU

Is it below 1Ω?

Confirm and check the grounding
status between the harness side
connector pin 8(-) and 24(1)
grounding terminal.

Remove the harness side connector and measure

the resistance between the harness side connector

pin 8 (-) and grounding wire and between the pin

24 (-) and grounding wire