Chery A11 2003 Repair Manual page 275

Maintenance Manual for Chery·Windcloud
Failure: injector circuit error in Cylinder 3
Step Operation
Connect scanner and commutator, and then turn
1
ignition switch to "ON".
Unplug Cylinder 3 injector connector from wire
harness, check the voltage between Pin 1 of the
2
connector and cathode of power supply with a
multimeter to see if it is around 12V.
Check the connection between Pin 1 of Cylinder 3
3 injector connector and main relay to see if open
circuit or short circuit to ground occurs.
Check the resistance between Pin 1 and Pin 2 of
4 Cylinder 3 injector with a multimeter to see if it is
around 11-16Ω at 20℃.
Check the voltage between Pin 2 of Cylinder 3
5 injector connector and cathode of power supply
with a multimeter to see if it is around 3.7V.
Check the connection between Pin 2 of Cylinder 3
6 injector connector and Pin 78 of ECU to see if open,
short circuit to power/ground occurs.
Failure: injector circuit error in Cylinder 4
Step Operation
Connect scanner and commutator, and then turn
1
ignition switch to "ON".
Unplug Cylinder 4 injector connector from wire
harness, check the voltage between Pin 1 of the
2
connector and cathode of power supply with a
multimeter to see if it is around 12V.
Check the connection between Pin 1 of Cylinder 4
3 injector connector and main relay to see if open
circuit or short circuit to ground occurs.
Check the resistance between Pin 1 and Pin 2 of
4 Cylinder 4 injector with a multimeter to see if it is
around 11-16Ω at 20℃.
5 Check the voltage between Pin 2 of Cylinder 4
injector connector and cathode of power supply
Marelli EFI System
Result Solution
Go to next step
Yes Go to Step 4
No Go to next step
Repair
Yes replace
harness
No Go to next step
Yes Go to next step
Replace
No
injector
Diagnosis
Yes
Instruction
No Go to next step
Repair
Yes replace
harness
Diagnosis
No
Instruction
Result Solution
Go to next step
Yes Go to Step 4
No Go to next step
Repair
Yes replace
harness
No Go to next step
Yes Go to next step
Replace
No
injector
Diagnosis
Yes
Instruction
or
wire
or
wire
or
wire
24