Chery QQ6 (S21) / S12LHD. Manual — part 206

77

P0694

Too high voltage in relay control circuit of electronic cooling fan (high

speed)

class5

78

P0704

Improper clutch pedal signal

class5

79

P1336

Restrictive effect of safety monitoring torque of electronic throttle

class34

80

P1545

The deviation between physical location and target location of electronic

throttle overruns

class34

81

P1558

Too large opening resistance of electronic throttle

class34

82

P1559

Failure in self-study process of electronic throttle

class34

83

P1564

System voltage fails to meet the conditions for self-study of electronic

throttle

class34

84

P1565

Failure in self-study of initialization of lower limit position of electronic

throttle

class34

85

P1568

Too large restoration resistance of electronic throttle

class34

86

P1579

Fails to meet the conditions for self-study of electronic throttle

class34

87

P1604

Failure in self-study of gain adjustment of electronic throttle

class34

88

P1610

Unprogrammed error in Secret Key and Security Code

class39

89

P1611

Security Code acceptance error

class39

90

P1612

Challenge request failed

class36

91

P1613

Immo Code request failed

class36

92

P1614

Transponder check error

class36

93

P1677

Too high voltage in control circuit of detector lamp (SVS)

class5

94

P1678

Too low voltage in control circuit of detector lamp (SVS)

class5

95

P1679

Failure in control circuit of detector lamp (SVS)

class5

96

P2106

Failure in driver stage of electronic throttle

class34

97

P2122

Too low voltage in signal circuit of electronic accelerator pedal position

sensor 1

class34

98

P2123

Too high voltage in signal circuit of electronic accelerator pedal position

sensor 1

class34

99

P2127

Too low voltage in signal circuit of electronic accelerator pedal position

sensor 2

class34

100

P2128

Too high voltage in signal circuit of electronic accelerator pedal position

sensor 2

class34

101

P2138

Improper signal from electronic accelerator pedal position sensor

class34

102

P2177

Self-study value of closed loop air fuel ratio control is above the upper limit

(normal load zone)

class5

103

P2178

Self-study value of closed loop air fuel ratio control is below the lower limit

(normal load zone)

class5

104

P2187

Self-study value of closed loop air fuel ratio control is above the upper limit

(idle speed zone)

class5

105

P2188

Self-study value of closed loop air fuel ratio control is below the lower limit

(idle speed zone)

class5

106

P2191

Self-study value of closed loop air fuel ratio control is above the upper limit

(heavy load zone)

class5

107

P2192

Self-study value of closed loop air fuel ratio control is below the lower limit

(heavy load zone)

class5

Electrical Schematic Diagram of Diagnostic Interface

Main power cord

Engine
theft-proof
module 1

11. The Steps for Implementation of Failure Diagnosis According to

Failure Information Records

11.1 Electronic Throttle Failure

Failure codes: P012, P0122, P0123, P022, P0222, P0223, P1336, P154, P1558, P1559, P1564,

P1565, P1568, P1579, P1604

No.

Operating steps

Result

Follow up steps

1

Put the ignition switch to “ON”.

Next step

Yes

Next step

2

Pull out the joint of throttle position sensor on

harness; use a multimeter to check if the

magnitude of voltage between its 3# and 5# pins

is around 12V and if a 5V voltage is present

between 6# and 2# pins.

No

5

Yes

Next step

3

Use a multimeter to check if the resistance

values between 1#, 4# and 6# pins of the sensor

are between 0.5kΩ and 1.6kΩ.

No

Replace the sensor

Yes

Replace the sensor

4

Meanwhile, use a multimeter to check if it is

break or short circuit between 1#, 4# and 6#

pins of throttle position sensor and ECU38#,

54#, 36#; or, turn blade of the throttle to observe

if its resistance value jumps and if the resistance

values between 1#, 4# and 6# change

accordingly with rotation of throttle.

No

Replace ECU

Yes

Repair or replace

wire harness

5

Connect an adaptor between ECU and harness,

use a multimeter respectively check if it is break

or short circuit between 1#, 2#, 6# and 4# pins

of the sensor and 10#, 32#, 36# and 54# pins of

ECU joint.

No

Replace ECU

Note: This auto adopts the electronic throttle body and has cancelled former step motor,
and the functions that were accomplished by the stop motor on a common throttle body
are now completely accomplished by the throttle driving motor. The electronic throttle
can not be repaired and failure rate of the throttle body is very low, if damaged,
replacing the assembly is the only choice to deal with the problem.

Special attention: The electronic throttle body can not be disassembled and repaired at
service station; in addition, after replacing electronic throttle body, be sure to let it carry
out self-study; otherwise, unsteady working at idle speed of engine may occur. See also
the section about electronic throttle for detailed study scheme. Maintenance of the
throttle body is analogous to that of the common valve body.

11.2 Knock Sensor failure

Failure codes: P0324, P0327, P0328

No.

Operating steps

Result

Follow up steps

1

Close the ignition switch, and the engine stops.

Next step

Yes

Next step

2

Pull out the joint of knock sensor on harness, use a

multimeter to check if both resistance values

between 1# and 2# pins and between 1# pin and

shielded wire (sensor shield) pin of knock sensor

are more than 1MΩ.

No

Replace with a new

sensor

Yes

Next step

3

Knock on the edge of knock sensor with a small

hammer and check with multimeter if there is

communicating signal output between sensor pin

1# and 2#.

No

Replace the sensor

4

Turn on the ignition switch but do not start the

engine.

Next step

Yes

Repair or replace

wires

5

Connect an adaptor between ECU and harness, use

a multimeter respectively check if it is break or

short circuit between 19#, 20# pins of ECU and

1#, 2# pins of sensor joint.

No

Replace ECU

Note: Generally, knock sensor is not liable to damage. When disassembling and installing the knock

sensor, be careful not to leave dirt on the contact surface of the sensor and the engine body and do

not add any gasket. If the sensor is damaged, it will have an comparatively great effect on

economical efficiency and emission of the engine. After the knock sensor is damaged, the electric

control system of the engine will lock ignition advance angle of the engine at a fixed ignition angle,

so, the acceleration performance of the engine will fall and economical efficiency and emission of

the engine will also be greatly affected.