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A66056
Engine Room R/B:
EFI MAIN Relay
G34805
ECM Connector
E24
MREL
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
05--165
COROLLA Supplement (RM1129E)
6
CHECK HARNESS AND CONNECTOR(EFI MAIN RELAY -- ECM)
(a)
Check the resistance between the EFI MAIN relay and
ECM.
(1)
Remove the EFI MAIN relay from the engine room
R/B.
(2)
Disconnect the E24 ECM connector.
(3)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
EFI MAIN relay (2) -- MREL (E24--42)
Below 1
Ω
Standard (Check for short):
Tester Connection
Specified Condition
EFI MAIN relay (1) or MREL (E24--42) -- Body ground
10 k
Ω
or higher
(4)
Reinstall the EFI MAIN relay.
(5)
Reconnect the ECM connector.
(b)
Check the resistance between the EFI MAIN relay and
body ground.
(1)
Remove the EFI MAIN relay from the engine room
R/B.
(2)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
EFI MAIN relay (2) -- Body ground
Below 1
Ω
(3)
Reinstall the EFI MAIN relay.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
CHECK AND REPLACE HARNESS AND CONNECTOR (TEB OF ECM -- BATTERY POS-
ITIVE TERMINAL)
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E