Toyota Celica 2005 Repair Manual page 553

DI−354
OBD II scan tool (excluding hand−held tester):
1 Check valve timing (Check for looseness and jumped tooth of timing chain)
(See page EM−26).
OK
2 Check operation of OCV.
(a)
OCV Connector
(b)
(+)
(−)
A19254
A19255
1
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (2ZZ−GE)
NG Adjust valve timing.
PREPARATION:
Start the engine.
CHECK:
(a) Check the engine speed when disconnecting the OCV
connector.
(b) Check the engine speed when applying battery voltage
between the terminals of the OCV.
RESULT:
Result
1
2
2 Go to step 4.
A19258
552
Check (a)
Normal engine speed Rough idle or engine stall
Except 1
Check (b)