Chery A11 2003 Repair Manual page 759

Maintenance Manual for Chery · Windcloud
Failure code: P0601 non-programmed check code error of ECU
Step Operation
Connect scanner and commutator, and then turn
1
ignition switch to "ON".
Clear failure code, recheck the failure to see if it is a
2
constant failure.
3 Replace ECU.
Failure code: P0602 non-programmed diagnostic data identification code
error of ECU
Step Operation
Connect scanner and commutator, and then turn
1
ignition switch to "ON".
Clear failure code, recheck the failure to see if it is a
2
constant failure.
3 Replace ECU.
Failure code: P0645 control circuit error of air conditioner compressor
relay
Step Operation
Connect scanner and commutator, and then turn
1
ignition switch to "OFF".
Unplug air conditioner compressor relay, turn
ignition switch to "ON", check voltages between
2
Pin 30, 85 of relay and cathode of power supply to
see if they are around 12V.
Check power supply terminal circuit of relay to see
3
if open circuit or short circuit to ground occurs.
Check the voltage between Pin 86 of relay (control
4
terminal of air conditioner compressor relay) and
cathode of power supply to see if it is around 3.7V.
Check the connection between Pin 86 of relay
(control terminal of air conditioner compressor
5
relay) and Pin 70 of ECU to see if open circuit
occurs.
M7.9.7 EFI System
Result Solution
Go to next step
Yes Go to next step
No System normal
Finish
Result Solution
Go to next step
Yes Go to next step
No System normal
Finish
Result Solution
Go to next step
Yes Go to Step 4
No Go to next step
Repair
Yes replace
harness
No Go to Step 2
Yes Replace relay
No Go to next step
Repair
Yes replace
harness
Diagnosis
No
Instruction
or
wire
or
wire
35