Toyota Celica 2005 Repair Manual page 545

DI−346
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand−held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air−fuel ratio was lean
or rich, as well as other data from the time when a malfunction occurred.
Hand−held tester:
1 Check OCV circuit.
PREPARATION:
(a) Connect the hand−held tester to the DLC3.
(b) Start the engine and warm it up.
(c) Turn the ignition switch ON and push the hand−held tester main switch ON.
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1.
CHECK:
Check the engine speed when operating the OCV by the hand−held tester.
OK:
Tester Operation
OCV is OFF
OCV is ON
NG
2 Check operation of OCV.
(+)
(−)
OK
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
OK Check for intermittent problems
(See page DI−295).
PREPARATION:
(a) Start the engine and warm it up.
(b) Disconnect the OCV connector.
(c) Apply battery voltage between the terminals of the OCV.
CHECK:
Check the engine speed.
OK:
Rough idle or engine stalled.
A19255
NG Replace OCV.
544
Specified Condition
Normal engine speed
Rough idle or engine stall