Toyota Celica 2005 Repair Manual page 436

20 Check voltage between terminals PTNK and E2 of ECM connectors.
E2
Disconnect
NG
21 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN−30).
OK
Replace ECM (See page SF−78).
22 Check fuel tank inlet valve.
OK
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
PTNK
(b)
CHECK:
Measure the voltage between terminals PTNK and E2 of the
ECM connectors at following condition (1) and (2).
NOTICE:
Vacuum applied to vapor pressure sensor must be less
than 66.7 kPa (500 mmHg, 19.7 in.Hg).
OK:
Vacuum
OK
A21545
NG
NG
− ENGINE (1ZZ−FE)
Remove the ECM cover.
Turn the ignition switch ON.
(1) Disconnect the vacuum hose from the vapor pres-
sure sensor.
(2) Using the MITYVAC (Hand−Held Vacuum Pump),
apply a vacuum of 4.0 kPa (30 mmHg, 1.18 in.Hg)
to the vapor pressure sensor.
Condition (1) Voltage: 2.9 to 3.7 V
Condition (2) Voltage: 0.5 V or less
Go to step 22.
Repair or replace harness or connector.
Replace fuel tank inlet valve.
435
DI−237