![Toyota 2003 COROLLA Repair Manual Supplement Download Page 151](http://html.mh-extra.com/html/toyota/2003-corolla/2003-corolla_repair-manual-supplement_1141625151.webp)
A56869
V2
Front View
Wire Harness Side:
VRV Connector
G34806
E23
ECM Connector
VNT
A66056
Engine Room R/B:
EFI MAIN Relay
05 --50
--
DIAGNOSTICS
ECD SYSTEM (1ND-- TV)
COROLLA Supplement (RM1129E)
1 I NSPECT VACUUM REGULATING VALVE ASSY
OK:
The VRV (Vacuum Regulating Valve) resistance is within the standard range and the VRV oper-
ates normally.
NG
REPLACE VACUUM REGULATING VALVE ASSY
OK
2 CHECK HARNESS AND CONNECTOR(VRV -- EFI M AIN RELAY)
(a) Disconnect the V2 VRV c onnector.
(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
VNT (E23 -- 33) -- (V2--2)
B el ow 1
Ω
EFI MAIN relay (3) -- (V2--1)
Below 1
Ω
Standard (Check for short):
Tester Connection
Specified Condition
VNT (E23 -- 33) or (V2 -- 2) -- Body ground
10 k
Ω
or hi gher
EFI M AIN relay (3) or (V2 --1) -- Body ground
10 k
Ω
or higher
(e) Reconnect the VRV c onnector.
(f) Reconnect the ECM connector.
(g) Reinstall the EFI MAIN relay.
NG REPAIR
OR
REPLACE
HARNESS
AND
CONNECTOR
OK
To Alphabetical Index
To Sub Index
TOYOTA COROLLA REPAIR MANUAL SUPP 1129E