Toyota Celica 2005 Repair Manual page 849

DI−650
OBD II scan tool (excluding hand−held tester):
1 Check oil pressure switch for VVTL.
PREPARATION:
(a) Disconnect the oil pressure switch for VVTL connector.
(b) Ignition switch OFF.
CHECK:
Measure continuity between the oil pressure switch and body ground.
OK:
No continuity
PREPARATION:
(a) Start the engine and warm it up.
(b) Disconnect the OCV for VVTL connector.
(c) Maintain engine speed at 6,500 rpm.
CHECK:
Measure continuity between the oil pressure switch and body ground when applying battery voltage be-
tween terminals of the OCV.
OK:
VVTL system is OFF (OCV is OFF): No continuity
VVTL system is ON (OCV is ON): Continuity
OK
2 Check for open and short in harness and connector between oil pressure switch
for VVTL and ECM (See page IN−30).
OK
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
NG Replace oil pressure switch.
NG Repair or replace harness or connector.
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