Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 274
6E–126
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Evaporative (EVAP) Emissions Canister Purge Valve Check
(Cont'd)
Step
No
Yes
Value(s)
Action
8
1. Turn the ignition “OFF”.
2. At the throttle body, install a vacuum gauge where
the hose from the purge solenoid was disconnected
for testing.
3. Start the engine.
4. Stabilize the engine speed at about 2500 RPM.
5. Momentarily snap the throttle open and let it return
to idle.
Is there approximately 10 in. Hg (34 kPa) of vacuum
available at the EVAP emission canister purge
solenoid?
—
No problem
found in the
EVAP
emission
canister
purge valve
check
Refer to
Diagnostic
Aids
9
1. Disconnect the solenoid electrical connector.
2. Connect a test lamp between the harness
terminals.
Does the test lamp light?
—
Go to
Step 7
Go to
Step 10
10
Probe terminal A and terminal B with a test lamp to
ground.
Does the test lamp light on both terminals?
—
Go to
Step 11
Go to
Step 12
11
Repair the short to voltage in the S7 Pin wire.
Is the action complete?
—
Verify repair
—
12
Does one of the terminals light the test lamp?
—
Go to
Step 13
Go to
Step 14
13
Check for an open in the S7 Pin wire between the purge
solenoid and the PCM.
Was there an open circuit?
—
Go to
Step 15
Go to
Step 6
14
Repair the open in the BLK/YEL wire.
Is the action complete?
—
Verify repair
—
15
Repair the open in the S7 Pin wire.
Is the action complete?
—
Verify repair
—