Honda CR-V 1997 Service Manual page 407

'97 model:
I I
The scan tool indicates Diagnostic Trouble Code (DTC) P0441: Evaporative Emission IEVAP) control system
· P0441 .
insufficient purge flow.
Description
By monitoring the purge line vacuum with the MAP sensor, the PCM can detect insufficient EVAP control system purge
flow.
Possible Cause
• EVAP Purge Control Solenoid Valve
• EVAP Purge Control Solenoid Valve Circuit
• EVAP Control Canister
• Vacuum lines
• PCM
Troubleshooting Flowchart
- The MIL has been reported on.
-
oTC PO" 1 is stored.
I
Problem verification:
1. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the radiator fan comes on.
2.
Do the PCM Reset Procedure.
3.
Connect the SCS service con-
nector.
4.
Test-drive under following con-
ditions on the road.
- Without any electrK:alload
- Transmission in
[Q!]
or
~
position
-
Engine speed between
1,200 - 2.400 rpm.
-
Decelerate from 50 mph (SO
km/hl to 15 mph (24 km/hl
NO
Is DTe P0441 indicated?
/ '
I
YES
Check for an open in the wire (lGl
line):
1. Turn the ignition switch OFF.
2.
Di sconnect the EVAP purge
contro l solenoid va lve 2P con-
nector.
3. Turn t he ignition switch ON
(H).
4. Measure voltage between body
ground and the EVAP purge
control solenoid valve 2P con-
nector terminal No.1 .
NO
Is there battery voltage?
/'
I
YES
(To page 11-206)
Intermittent failure, system is OK
at this time. Check for poor con-
nactions or loos. wires at Cl08
IEVAP purge control solenoid
valve) and at the PCM.
Aepiir open in the wires between
the EVAP purge control solenoid
valve and the No. 15 ALTERNA-
TOR SP SENSOR (7.5 A) fuse.
EV AP PURGE CONTROL
SOLENOID VALVE 2P
CONNECTOR IC1081
Wire side of female
terminals
(cont'd)
11-205