Toyota Celica 2005 Repair Manual page 754

2 Check voltage between terminal SPD of ECM connector and body ground.
A19521
4.5 to 5.5V
0V
OK
Replace ECM (See page SF−78).
2005 CELICA (RM1131U)
DIAGNOSTICS
PREPARATION:
(a)
(b)
(c)
(d)
CHECK:
Measure voltage between terminal SPD of ECM connector and
SPD
body ground when the wheel is turned slowly.
OK:
A19629
HINT:
The output voltage should fluctuate up and down similarly to the
diagram on the left when the wheel is turned slowly.
Turn Wheel
NG
A21424
− ENGINE (2ZZ−GE)
Remove the ECM cover.
Shift the shift lever to neutral.
Jack up one of the front wheels.
Turn the ignition switch ON.
Voltage is generated intermittently.
Repair or replace harness or connector.
753
DI−555