G34823
V9
Wire Harness Side:
Front View
Pressure Regulator Valve
Connector
G34806
E23
ECM Connector
PRV
A66056
Engine Room R/B:
EFI MAIN Relay
A98509
Fuel Metering Unit
Component Side:
05--150
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
COROLLA Supplement (RM1129E)
6
CHECK HARNESS AND CONNECTOR(PRESSURE REGULATOR VALVE -- ECM,
PRESSURE REGULATOR VALVE -- EFI MAIN RELAY)
(a)
Disconnect the V9 pressure regulator valve 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)
Below 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 higher
EFI MAIN relay (3) or (V9--2) -- Body ground
10 k
Ω
or higher
(e)
Reconnect the pressure regulator valve connector.
(f)
Reconnect the ECM connector.
(g)
Reinstall the EFI MAIN relay.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
7
INSPECT INJECTION OR SUPPLY PUMP ASSY(FUEL METERING UNIT)
(a)
Disconnect the M6 fuel metering unit connector.
(b)
Measure the resistance between the terminals of the fuel
metering unit.
Standard: 2.60 to 3.15
Ω
at 20
_
C (68
_
F)
(c)
Reconnect the fuel metering unit connector.
NG
REPLACE INJECTION OR SUPPLY PUMP ASSY
OK
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E