Toyota Celica 2005 Repair Manual page 563

DI−364
2 Check EFI relay.
OK
3 Check voltage between terminals HT1A, HT2A, HT1B, HT2B of ECM connectors
and body ground.
HT1A
HT2A
A19522
NG
2005 CELICA (RM1131U)
DIAGNOSTICS
A19288
HT1B
HT2B
A19630
− ENGINE (2ZZ−GE)
PREPARATION:
Remove the EFI relay from the engine room J/B.
CHECK:
Inspect the EFI relay.
OK:
Tester Connection
1 − 2
3 − 5
NG Replace EFI relay.
PREPARATION:
(a) Remove the ECM cover.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals HT1A, HT2A, HT1B,
HT2B of the ECM connectors and body ground.
HINT:
Connect terminal HT1A to bank 2 sensor 1.
S
Connect terminal HT2A to bank 1 sensor 1.
S
Connect terminal HT1B to bank 1 sensor 2.
S
Connect terminal HT2B to bank 2 sensor 2.
S
OK:
Voltage: 9 to 14 V
OK Replace ECM (See page SF−78).
562
Specified Condition
Continuity
No continuity
Continuity
(Apply battery voltage to terminals 1 and 2)