Maintenance Manual for Chery · Windcloud M7.9.7 EFI System
wire harness and check the resistance value between
Pin 1 and Pin 2 with a multimeter to see if it
corresponds with the temperature (refer to
corresponding chapter of this manual for details).
No Replace sensor
Yes Go to Step 6
4
Unplug coolant temperature sensor connector from
wire harness and check the voltage between Pin 1
and Pin 2 with a multimeter to see if it is around 5V.
No Go to next step
Yes
Repair or
replace wire
harness
5
Check respectively the connections between Pin 39
of ECU and Pin 1 of sensor connector, Pin 35 of
ECU and Pin 2 of sensor connector to see if they are
short circuit to ground.
No Go to next step
Yes
Diagnosis
Instruction
6
Start engine and idle it. Observe value of Coolant
Temperature, it increases along with coolant
temperature.
No Replace sensor
Failure code: P0122 too low circuit voltage of throttle position sensor
Step Operation Result Solution
1
Connect scanner and commutator, and then turn
ignition switch to “ON”.
Go to next step
Yes Go to next step
2
Check Throttle Absolute Opening in data stream to
see if it is 4%-10% (depends on specific car model).
No Go to Step 5
Yes Go to next step
3
Slowly step down accelerating pedal to dead
position and observe Throttle Absolute Opening in
data stream to see if it increases to 85-95% (depends
on specific car model) along with opening of
throttle.
No Go to Step 5
Yes Replace sensor
4
Repeat Step 3 and check Throttle Absolute Opening
in data stream to see if it jumps when changing.
No Go to next step
Yes
Repair or
replace wire
harness
5
Unplug throttle position sensor connector from wire
harness, and respectively check the connections
between Pin 17 of ECU and Pin 1 of sensor
connector, Pin 32 of ECU and Pin 2 of sensor
connector, Pin 16 of ECU and Pin 3 of sensor
connector to see if they are short circuit to ground.
No Go to next step
Yes Replace sensor
6
Check the voltage between Pin 1 and Pin 2 of
sensor connector with a multimeter to see if it is
around 5V.
No
Diagnosis
Instruction
18
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