Toyota ZZT230 series, Repair Manual

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Dl-95
DIAGNOSTICS
-
ENGINE
VSV and charcoal canister, and then clean vacuum hose between charcoal canister and
tor
pressure swltchlng valve, and VSV for pressure switching valve and fuel tank.
23
Check tor and short In harness and connector bet ean EFI main relay
(Marking: and
VSV
valve, and
VSV lor pressure
valve and ECM
G Repair or replace harness or connector.
Check and replace ECM (See page IN-{!()).
24
Check
fuel
tank.
VSV!orCCV
_,
y
A101120
-
OF�
ON '
e---+-+--­
OFF,
'
ON '
30 ...,.
'
'
'
•
Measure
'
Volmge
PTNK (+)
PREPARATION:
(a) Remove the ECM cover.
(b) Connect the TOYOTA hand-held tester to the DLC3.
(c)
Select the ACTIVE TEST mode on the TOYOTA hand-
held tester.
{d) Start the engine.
(e) The VSV lor the CCV is ON by the TOYOTA hand-held
tester.
(f)
The VSV for the EVAP is OFF, and the VSV for the pres­
sure switching valve is ON by the TOYOTA hand-held
tester and remains on for 30 sec.
CHECK:
Measure the voltage between terminals PTNK and E2 of the
ECM connectors after switching the VSV for the EVAP from
OFF to ON,
and
the VSV for the pressure switching valve from
ON to OFF.
OK: Voltage:
2.5
V or less
G
Replace fuel tank.
J [:J