Toyota Celica 2005 Repair Manual page 749

DI−550
1 Check voltage between terminals VC and E2 of ECM connector.
VC
E2
A19522
OK
2 Check voltage between terminals PTNK and E2 of ECM connectors.
E2
Disconnect
A19627
A19432
NG
2005 CELICA (RM1131U)
DIAGNOSTICS
CHECK:
(a) Remove the ECM cover.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals VC and E2 of the ECM
connector.
OK:
Voltage: 4.5 to 5.5 V
A19630
NG
PREPARATION:
(a) Remove the ECM cover.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals PTNK and E2 of the
ECM connectors.
(1)
PTNK
(2)
(3)
NOTICE:
The vacuum applied to the vapor pressure sensor must be
Vacuum
less than 66.7 kPa (500 mmHg, 19.7 in.Hg).
OK:
(1) Voltage: 2.9 to 3.7 V
(2) Voltage: 0.5 V or less
A19637
(3) A consecutive waveform presents.
OK
− ENGINE (2ZZ−GE)
Replace ECM (See page SF−78).
Disconnect the vacuum hose from the vapor pres-
sure sensor.
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.
Check the vapor pressure sensor output waveform
using a hand−held tester.
Replace ECM (See page SF−78).
748