Toyota Celica 2005 Repair Manual page 376

1 Check continuity between terminal KNK1 of ECM connector and body ground.
LOCK
KNK1
A09086
NG
2 Check knock sensor 1 (See page SF−72).
OK
3 Check for open and short in harness and connector between ECM and knock
sensor 1 (See page IN−30).
OK
4 Does malfunction disappear when a good knock sensor 1 is installed?
NO
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS − ENGINE (1ZZ−FE)
PREPARATION:
(a) Remove the ECM cover.
(b) Disconnect the E5 connector of the ECM.
CHECK:
Measure resistance between terminal KNK1 of the ECM con-
nector and body ground.
OK:
Resistance: 10 kΩ or higher
A09094
OK Go to step 3.
NG Replace knock sensor 1.
NG Repair or replace harness or connector.
YES Replace knock sensor 1.
375
DI−177