Geely EC718 2009 Workshop Manual page 824

2-742 Control System JL4G15-D
Yes
Diagnostic completed.
Step 12
2.12.7.39 DTC P0458 P0459
1. DTC Descriptor:
DTC P0458
DTC P0459
EVAP solenoid valve absorbs fuel vapor from the evaporative emission Canister to the intake manifold. EVAP solenoid valve is
controlled by the pulse width modulation (PWM). The circuit consists of:
– Operating Voltage: Battery voltage passes through ECM controlled main relay terminal No.87 to reach EVAP solenoid harness
connector EN24 terminal A.
– ECM control circuit: EVAP solenoid valve wiring harness connector EN24 terminal B is connected to ECM harness connector
EN01 terminal No.57. ECM has an internal driver circuit to control the solenoid valve ground. Driver circuit is equipped with a
ECM feedback circuit. ECM monitors the feedback voltage to determine whether the control circuit is open, short to ground or
short to power supply.
2. Conditions For Setting DTC and The Fault Location:
DTC Code DTC Detection Strategy
P0458
P0459
EC718/EC718RV EC715/EC715RV 10/2009
Canister Control Valve Control Circuit Short To Ground or Open
Canister Control Valve Control Circuit Short To Power Supply
Hardware Circuit Checks
Hardware Circuit Checks
(f) Read control system DTC code again to confirm that the
system has no DTC code.
No
Conditions For Setting The DTC
(Control Strategy)
At idle conditions, canister solenoid
valve inoperative, canister solenoid
valve circuit short to ground or open,
DTC code set.
At idle conditions, canister solenoid
valve inoperative, canister solenoid
valve circuit short to power supply,
DTC code set.
Intermittent Fault. Refer to
Fault Check.
Fault Locations
1. Canister Solenoid Valve
Circuit
2. Solenoid Valve
3. ECM
1. Canister Solenoid Valve
Circuit
2. Solenoid Valve
3. ECM
Engine
2.2.7.3 Intermittent