G34805
ECM Connector
E24
STA
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
A61075
ST2
Ignition Switch
Wire Harness Side:
I11
05--168
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
COROLLA Supplement (RM1129E)
INSPECTION PROCEDURE
HINT:
This chart assumes that the engine is cranked normally. If the engine is not cranked, proceed to the problem
symptoms table on page 05--10.
1
READ VALUE USING INTELLIGENT TESTER II(STA SIGNAL)
(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 / Data List / Starter SIG.
(d)
Read the value.
OK:
Ignition Switch Position
ON
START
Starter SIG
OFF
ON
OK
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
NG
2
CHECK HARNESS AND CONNECTOR(ECM -- IGNITION SWITCH)
(a)
Disconnect the E24 ECM connector.
(b)
Disconnect the I11 ignition switch connector.
(c)
Check the resistance.
Standard (Check for open):
Tester Connection
Specified Condition
STA (E24--9) -- Ignition switch connector ST2 (I11--3)
Below 1
Ω
Standard (Check for short):
Tester Connection
Specified Condition
STA (E24--9) or Ignition switch connector ST2 (I11--3) --
Body ground
10 k
Ω
or higher
(d)
Reconnect the ECM connector.
(e)
Reconnect the ignition switch connector.
NG
REPAIR
OR
REPLACE
HARNESS
OR
CONNECTOR
OK
REPLACE ECM
To Alphabetical Index
To Sub Index
TOYOTA COROLLA REPAIR MANUAL SUPP 1129E