G34817
E23
THAF
ETHAF
ECM
5
4
A8
Intake Air Temperature Sensor
(Built into Mass Air Flow Meter)
E23
5V
R
THA
E2
G--R
6
7
BR
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
05 -- 65
COROLLA Supplement (RM1129E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
S
If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
S
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
vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time
the malfunction occurred.
1 READ VALUE USING I NTELLIGENT TESTER II(INTAKE AIR TEMPERATURE)
(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 / Intake Air.
(d) Read the v alue.
OK:
Temperature value: Same as the actual intake air temperature.
Result:
Temperature Displayed
Proceed To
Less than -- 40
˚
C (--40
˚
F
)
A
More than 135
˚
C (275
˚
F
)
B
OK (Same as actual intake air temperature)
C
HINT:
S
If there is an open circuit, the intelligent tester ll indicates less than -- 40
˚
C (--40
˚
F).
S
If there is a short circuit, the intelligent tester ll indicates more than 135
˚
C (275
˚
F).
B
C
CHECK FOR INTERMITTENT PROBLEMS
A
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E