G34768
MREL
B--W
42
3
EFI MAIN R elay
E24
E23
2
IE4
EB1
EFI
1
B
5
Battery
FL MAIN
M6
Fuel Metering Unit
PCV
12
1
1
1
1
1
1
2
1 2
B--W
6
Engine Room R/B and J/B
ECM
1A
B--W
B
A
A
D E
EB1
8 4
J48 J47
R--W
R--W
J/C
J49
J/C
GR
B--W
B--O
B--W
1
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
05 -- 101
COROLLA Supplement (RM1129E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using an intelligent tester ll. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data c an help determine if the v ehicle was
moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction oc -
curred.
1 READ O UTPUT DTCS(DTC P0252 AND/OR P1228)
(a) Connect an intelligent tester ll to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d)
Read DTCs.
Result:
Display (DTC Output)
Proceed To
P1228 or ”P0252 and P1228”
A
Only P0252
B
OK
To Alphabetical Index
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E