Toyota Celica 2005 Repair Manual page 675

DI−476
3 Check voltage between terminals KNK1 and EKNK of ECM connector.
EKNK (−)
OK
Check for intermittent problems
(See page DI−295).
NOTICE:
Fault may be intermittent. Check wire harness and connectors carefully.
4 Check knock sensor.
Ohmmeter
OK
Repair or replace harness or connector.
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
CHECK:
Measure the voltage between the terminals of the ECM connec-
tor.
KNK1(+)
OK:
ECM Connector
A21264
PREPARATION:
Remove the knock sensor.
CHECK:
Measure the resistance between the terminals.
OK:
A21265
− ENGINE (2ZZ−GE)
Disconnect the E11 ECM connector.
Turn the ignition switch ON.
Voltage: 4.5 to 5.5 V
NG Replace ECM (See page SF−78).
Resistance: 120 to 280 kΩ at 20°C (68°F)
NG Replace knock sensor.
674