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A98018
+B2
+B1
EGR1
EGR3
EGR2
EGR4
Component Side:
A84847
E21
Wire Harness Side:
EGR Valve Connector
Front View
G34805
ECM Connector
E24
EGR2
EGR1
EGR4
EGR3
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
05--95
COROLLA Supplement (RM1129E)
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
10
INSPECT EGR VALVE ASSY
(a)
Disconnect E21 EGR valve connector.
(b)
Measure the resistance between the terminals of the
EGR valve.
Standard:
Tester Connection
Specified Condition
+B1 (5) -- EGR1 (4)
19.6
±
1.4
Ω
+B1 (5) -- EGR3 (6)
19.6
±
1.4
Ω
+B2 (2) -- EGR2 (1)
19.6
±
1.4
Ω
+B2 (2) -- EGR4 (3)
19.6
±
1.4
Ω
NG
REPLACE EGR VALVE ASSY
OK
11
CHECK HARNESS AND CONNECTOR(EGR VALVE ASSY -- ECM)
(a)
Disconnect the E21 EGR valve connector.
(b)
Disconnect the E24 ECM connector.
(c)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
EGR1 (E24--12) -- (E21--4)
Below 1
Ω
EGR2 (E24--11) -- (E21--1)
Below 1
Ω
EGR3 (E24--31) -- (E21--6)
Below 1
Ω
EGR4 (E24--30) -- (E21--3)
Below 1
Ω
Standard (Check for short):
Tester Connection
Specified Condition
EGR1 (E24--12) or (E21--4) -- Body ground
10 k
Ω
or higher
EGR2 (E24--11) or (E21--1) -- Body ground
10 k
Ω
or higher
EGR3 (E24--31) or (E21--6) -- Body ground
10 k
Ω
or higher
EGR4 (E24--30) or (E21--3) -- Body ground
10 k
Ω
or higher
(d)
Reconnect the EGR valve connector.
(e)
Reconnect the ECM connector.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E