Chery A11 2003, Repair Manual, Page: 269 / 784

Maintenance Manual for Chery·Windcloud
Marelli 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,
around 2.5K ohm at normal temperature).
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 54
of ECU and Pin 1 of sensor connector, Pin 62 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: 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% (or the output voltage around
0.6V).
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% 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
(open circuit in TPS).
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 54 of ECU and Pin 1 of sensor
connector, Pin 60 of ECU and Pin 2 of sensor
connector, Pin 76 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