Geely EC718 2009 Workshop Manual page 192

2-110 Control System JL4G18-D
DTC
DTC Detection Strategy
Code
1. Pre-Catalytic Sensor Voltage
Too High
P0131
P0132 2. Pre-Catalytic Sensor Voltage
Too Low
1. Signal circuit open.
2. Pre-Catalytic Oxygen Sensor
P0134
High Resistance At High
Temperature
1. Post-Catalytic oxygen sensor
control integral value is over
maximum limit.
2. Post-Catalytic oxygen sensor
P0133
control integral value is lower
P2195
than minimum limit.
P2196
3. Filtered Pre-Catalytic oxygen
sensor signal is greater than
specified value.
EC718/EC718RV EC715/EC715RV 10/2009
Conditions For Setting The DTC (Control Strategy)
1. Pre-Catalytic oxygen sensor output voltage is greater
than 1.5 V.
2. Pre-Catalytic oxygen sensor output voltage is less
than 0.06 V.
3. Battery voltage is greater than 10.98 V.
4. Engine speed is greater than 25 rpm.
5. Exhaust temperature is less than the upper limit 800°C
(1,472 ºF).
6. Exhaust is hot enough.
1. Sensor voltage is between 0.401 V and 0.601 V.
2. Sensor resistance is greater than 20,000 Ω.
3. Oxygen sensor is hot enough, lasting for 100 s.
1. Post-Catalytic oxygen sensor control integral value is
greater than 1.0 s.
2. Post-Catalytic oxygen sensor control integral value is
less than -1.0 s.
3. Diagnostic function is switched on.
4. Filtered pre-catalytic oxygen sensor signal cycle is
more than 3.3 s.
5. Effective cycle count value is greater than 20.
6. Target excess air coefficient is equal to 1.
7. No pressure sensor malfunction.
8. No coolant temperature sensor malfunction.
9. No intake air temperature sensor malfunction.
10. No diagnosis preventing conditions.
11. Speed is between 1,600 rpm and 2,600 rpm.
12. Load is between 25 and 50.
13. Exhaust temperature model value is greater than 500.
14. No pre-catalytic oxygen sensor malfunction.
15. No three-way catalytic converter malfunction.
Engine
Fault Locations
1. Sensor Circuit
2. Sensor
3. Mixture Too
Rich
4. Mixture Too
Lean
5. ECM