Chery A15. Manual - part 41

 

Diagnostic trouble code: P0509 “Overvoltage in control circuit of idle speed 
regulator” 

Item 

No. 

Operation procedure 

Inspection 

results 

Follow-up procedure

1 

Connect the diagnostic tester and 
adaptor, and turn the ignition switch to 
“ON” position. 

 

Proceed to next step

Yes 

Proceed to next step

2 

Disconnect the connector of idle speed 
regulator and inspect with multimeter to 
verify that the resistances between pin A 
and D, pin B and C are 53±5.3Ω under 
20 .

℃

 

No 

Replace the step 

motor. 

Yes 

Repair or replace the 

wiring harness. 

3 

Verify that the circuits between pin A, B, 
C, and D of idle speed regulator and 65#, 
66#, 67#, and 64# pin of ECU are short 
to power supply. 

No 

Refer to diagnosis 

help. 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G-52

 

Diagnostic trouble code: P0511 “Malfunction in control circuit of idle speed 
regulator” 

Item 

No. 

Operation procedure 

Inspection 

results 

Follow-up procedure

1 

Connect the diagnostic tester and 
adaptor, and turn the ignition switch to 
“ON” position. 

 

Proceed to next step.

Yes 

Proceed to next step.

2 

Disconnect the connector of idle speed 
regulator and inspect with multimeter to 
verify that the resistances between pin A 
and D, pin B and C are 53±5.3Ω under 
20 .

℃

 

No 

Replace the step 

motor. 

Yes 

Repair or replace the 

wiring harness. 

3 

Verify that the circuits between pin A, B, 
C, and D of idle speed regulator and 65#, 
66#, 67#, and 64# pin of ECU are open. 

No 

Refer to diagnosis 

help. 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G-53

 

Diagnostic trouble code: P0560 “Improper voltage signal of system” 

Item 

No. 

Operation procedure 

Inspection 

results 

Follow-up 

procedure 

1 

Connect the diagnostic tester and adaptor, 
and turn the ignition switch to “OFF” 
position. 

 

Proceed to next 

step 

Yes 

Proceed to next 

step. 

2 

Inspect with multimeter to verify that the 
voltage of battery is about 12V. 

No 

Replace the battery.

Yes 

Repair or replace 

the wiring harness.

3 

Verify that the resistances between the 
44#, 45#, and 63# pins of ECU and 87# 
pin of the main relay are open or short to 
ground. 

No 

Proceed to next 

step 

Yes 

Proceed to next 

step 

4 

Start up the engine, and verify that the 
charging voltage of generator is 
maintained within 9-16V under different 
speeds. 

No 

Replace the 

generator. 

Yes 

Refer to diagnosis 

help. 

5 

Verify that the earth point of engine 
wiring harness is correct. 

No 

Repair or replace 

the wiring harness.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G-54

 

Diagnostic trouble code: P0562 “Undervoltage of system” 

Item 

No. 

Operation procedure 

Inspection 

results 

Follow-up procedure

1 

Connect the diagnostic tester and 
adaptor, and turn the ignition switch to 
“OFF” position. 

 

Proceed to next step 

Yes 

Proceed to next step.

2 

Inspect with multimeter to verify that 
the voltage of battery is about 12V. 

No 

Replace the battery. 

Yes 

Repair or replace the 

wiring harness. 

3 

Verify that the resistances between the 
44#, 45#, and 63# pins of ECU and 87# 
pin of the main relay are excessive. 

No 

Proceed to next step 

Yes 

Proceed to next step 

4 

Start up the engine, and verify that the 
charging voltage of generator is 
maintained within 9-16V under different 
speeds. 

No 

Replace the 

generator. 

Yes 

Refer to diagnosis 

help. 

5 

Verify that the earth point of engine 
wiring harness is correct. 

No 

Repair or replace the 

wiring harness. 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G-55