Chery A21 2005 Service Manual page 356

CHERY·A21 SERVICE MANUAL
DTC P0112 Circuit voltage is much lower of the throttle position sensor
No.
Connect the diagnostic tester and commutator, put the
1
Observe "air intake temperature" item in data flow, if it is
same temperature with air intake pipe(specific data is
2
Notice: if the value is - 40
Take off the joint of cable air intake temperature sensor,
check the resistance values using multimeter between
3
corresponding to its temperature (please reference the
Take off the joint of cable air intake temperature sensor,
4
check the voltage between pin No.1 and pin No.2 by
Check if it is open circuit or short circuit to power supply
5 between ECU pin No. 17, No. 40 and sensor connector
Start the engine at idle speed. Observe the value changes
of diagnostic tester "air intake temperature", the value
6
should increase with the increase of the engine intake air.
DTC: P0113 Temperature is much higher indicated by the air intake temperature sensor
No.
Connect the diagnostic tester and commutator, put the
1
Observe "air intake temperature" item in data flow, if it is
same temperature with air intake pipe(specific data is
2
Notice: if the value always is - 40
Take off the joint of cable air intake temperature sensor,
check the resistance values using multimeter between
3
corresponding to its temperature (please reference the
Take off the joint of cable air intake temperature sensor,
4
check the voltage between pin No.1 and pin No.2 by
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Operating steps
ignition switch to "ON"
correlated to the engine temperature at that time)
℃
failure in the circuit.
sensor connector No. 1 and No. 2 and check if it is
related section of this service manual)
multimeter and look if it is around 5V.
No.1, No.2
Operating steps
ignition switch to "ON".
correlated to the engine temperature at that time)
circuit failure in the circuit.
sensor connector No. 1 and No. 2 and check if it is
related section of this service manual).
multimeter and look if it is around 5V.
there is perhaps open circuit
℃
there is perhaps open
33
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ENGINE EFI SYSTEM
Result Follow up steps
Next step
Yes To step No. 5
No Next step
Yes Next step
No Replace sensor
Yes To step 5
No Next step
Repair or
Yes replace
cable
No Next step
Yes Diagnosis help
Replace the
No
sensor
Result Follow up steps
Next step
Yes To step No. 5
No Next step
Yes Next step
No Replace sensor
Yes To step 5
No Next step