Isuzu 1999 RODEO Workshop Manual page 882

DTC P0440 EVAP Control System Malfunction (Cont'd)
Step
16 1. Using the Tech 2, command the EVAP vent solenoid
ON.
2. With the cart connected to the EVAP service port
continuously attempt to pressurize the EVAP
system by leaving the cart control knob in the
pressurized position.
3. Using the ultrasonic leak detector J41416, locate
and repair any leaks in the EVAP system (it may be
necessary to partially lower the fuel tank to examine
the top tank connections).
Is the action complete?
17 Replace the EVAP canister purge valve. Refer to
Diagnostic Aids
Is the action complete?
18 Locate and repair the cause of no source or vacuum to
the EVAP canister purge valve.
Is the action complete?
19 Replace the EVAP vent solenoid. Refer to Diagnostic
Aids
Is the action complete?
20 IMPORTANT: Review
instructions included with J41413 before performing
this step.
1. Turn the ignition switch ON, with the engine OFF.
2. Using the Tech 2, command the EVAP vent solenoid
ON (closed).
3. Pressurize the EVAP system to the specified value
using the EVAP pressure/purge cart J41413
(monitor pressure using the gauge on the cart).
4. Switch the rotary switch on the cart to HOLD and
observe the EVAP pressure gauge.
Does the pressure decrease to less than the specified
value within 2 minutes?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Action
the temperature variation
Value(s) Yes
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20
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2.14V System OK
6E1–255
No
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Go to Step 3