145 

Yes 

To step 6 

4 

Check voltage between 2# pin of phase sensor connector and cathode of 
power source is about 9.9V. 

No Next 

step 

Yes 

Repair or replace 
harness 

5 

check lines between 2# pin of phase sensor connector and 79# pin of ECU 
are opened or shorted to power source or earth; 

No Next 

step 

Yes Diagnosis 

help 

6 

Check signal panel of camshaft is good.     

No 

Replace signal 
panel  

No.094 Malfunction code: P0343 “circuit voltage of phase sensor too 

high”  

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “ON”. 

 Next 

step 

Yes 

To step 4 

2 

Take out connector of phase sensor of the harness, and check voltage 
between 3# and 1# pins of phase sensor connector is around 12V. 

No Next 

step 

Yes 

Repair or replace 
harness 

3 

Check lines between 3# pin of phase sensor and 87# pin of main relay are 
opened or shorted to earth; 
Check 1# pin of phase sensor is poorly earthed. 

No Next 

step 

Yes 

To step 6 

4 

Check voltage between 2# pin of phase sensor connector and cathode of 
power source is about 9.9V. 

No Next 

step 

Yes 

Repair or replace 
harness 

5 

check lines between 2# pin of phase sensor connector and 79# pin of ECU 
are opened or shorted to power source or earth; 

No Next 

step 

Yes Diagnosis 

help 

6 

Check signal panel of camshaft is good.     

No 

Replace signal 
panel  

 

 
 

 

 

146 

No.095 Malfunction code: P0443 "Malfunction of control circuit of driver 

stage of canister control valve"   

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “ON”. 

 Next 

step 

Yes 

To step 4 

2 

Take out connector of canister control valve of the harness, and check 
voltage between 1# pin of this connector and cathode of power source is 
around 12V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

3 

Check lines at power supply terminal of canister control valve are opened or 
shorted to ground. 

No 

To step 2 

Yes Next 

step 

4 

Check resistance between 1# and 2# pins of canister control valve is 
between 22~30Ω under 20℃with the multimeter. 

No 

Replace control 
valve 

Yes Diagnosis 

help 

5 

Check voltage between 1# pin of connector of canister control valve and 
cathode of power source is around 3.7V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

6 

Check lines between 2# pin of connector of canister control valve and 46# 
pin of ECU are open shorted. 

No Diagnosis 

help 

No.096 Malfunction code: P0444 "voltage of control circuit of driver 

stage of canister control valve too low"   

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “ON”. 

 Next 

step 

Yes 

To step 4 

2 

Take out connector of canister control valve of the harness, and check 
voltage between 1# pin of this connector and cathode of power source is 
around 12V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

3 

Check lines at power supply terminal of canister control valve are opened or 
shorted to ground. 

No 

To step 2 

 
 

 

 

147 

Yes Next 

step 

4 

Check resistance between 1# and 2# pins of canister control valve is 
between 22~30Ω under 20℃with the multimeter. 

No 

Replace control 
valve 

Yes Diagnosis 

help 

5 

Check voltage between 1# pin of connector of canister control valve and 
cathode of power source is around 3.7V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

6 

Check lines between 2# pin of connector of canister control valve and 46# 
pin of ECU are shorted to ground. 

No Diagnosis 

help 

No.097 Malfunction code: P0445 "voltage of control circuit of driver 

stage of canister control valve too high"   

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “ON”. 

 Next 

step 

Yes 

To step 4 

2 

Take out connector of canister control valve of the harness, and check 
voltage between 1# pin of this connector and cathode of power source is 
around 12V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

3 

Check lines at power supply terminal of canister control valve are opened or 
shorted to ground. 

No 

To step 2 

Yes Next 

step 

4 

Check resistance between 1# and 2# pins of canister control valve is 
between 22~30Ω under 20℃with the multimeter. 

No 

Replace control 
valve 

Yes Diagnosis 

help 

5 

Check voltage between 1# pin of connector of canister control valve and 
cathode of power source is around 3.7V with the multimeter. 

No Next 

step 

Yes 

Repair or replace 
harness 

6 

Check lines between 2# pin of connector of canister control valve and 46# 
pin of ECU are shorted to power source. 

No Diagnosis 

help 

 
 

 

 

148 

No.098 Malfunction code: P0480 "malfunction control circuit of cooling 

fan relay of AC condenser"   

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “OFF”. 

 Next 

step 

Yes 

To step 4 

2 

Take out cooling fan relay of AC condenser, and place ignition switch at 
“ON”, and check voltage between power supply terminal of this relay, i.e. 
30# and 85# pins of relay and cathode of power source is around 12V. 

No Next 

step 

Yes 

Repair or replace 
harness 

3 

Check lines at power supply terminal of cooling fan relay of AC condenser 
are opened or shorted to ground. 

No 

To step 2 

Yes Replace 

relay 

4 

Check voltage between control terminal of cooling fan relay of AC 
condenser this relay, i.e. 86# pin of relay and cathode of power source is 
around 3.7V. 

No Next 

step 

Yes 

Repair or replace 
harness 

5 

Check lines between 86# pin of control terminal of relay and 50# pin of ECU 
are opened or shorted to power source or ground. 

No Diagnosis 

help 

 

No.099 Malfunction code: P0500 "unreasonable malfunction of speed 

signal"  

Serial No.  Operation steps 

Results   

Follow-ups   

1 

Switch on diagnosis instrument and commutator, and place ignition switch 
to “OFF”. 

 Next 

step 

Yes 

Repair ABS system

2 

If vehicle is equipped with ABS system, check  ABS system has 
malfunction code.   

No Next 

step 

Yes Next 

step 

3 

Check pointer of odometer works normally.   

No 

Repair instrument 
lines 

Yes Next 

step 

4 

Check speed sensor works normally.   

No 

Replace speed 
sensor