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G34823
V9
Wire Harness Side:
Front View
Pressure Control Valve Connector
G34806
E23
ECM C onnector
PRV
A66056
Engine Room R/B:
EFI MAIN R elay
05 -- 54
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
COROLLA Supplement (RM1129E)
3 CHECK HARNESS AND CONNECTOR(PRESSURE CONTROL VALVE -- ECM,
PRESSURE CONTROL VALVE valve -- EFI M AIN RELAY)
(a) Disconnect the V9 pressure control v alve connector.
(b) Disconnect the E23 ECM connector.
(c) Remove the EFI MAIN relay from the engine room R/B.
(d) Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
PRV (E23 -- 4) -- (V9 -- 1)
B el ow 1
Ω
EFI MAIN relay (3) -- (V9 -- 2)
Below 1
Ω
Standard (Check for short):
Tester Connection
Specified Condition
PRV (E23 -- 4) or (V9 -- 1) -- Body ground
10 k
Ω
or hi gher
EFI M AIN relay (3) or (V9 -- 2) -- Body ground
10 k
Ω
or higher
(e) Reconnect the pressure control v alve connector.
(f)
Reconnect the ECM connector.
(g)
Reinstall the EFI MAIN relay.
NG
REPAIR
OR
REPLACE
HARNESS
AND
CONNECTOR
OK
REPLACE ECM
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E