BE6653
A00360
A00287
A00361
ON
Intake Air Temp.
Sensor
Engine ECU
2
1
3
9
E5
E5
5V
THA
E2
E1
THA
E2
R
BE6653
A00362
A00363
ON
Intake Air Temp.
Sensor
2
1
Engine ECU
3
9
THA
E2
E1
5V
E5
E5
DI--104
--
DIAGNOSTICS
ENGINE (2RZ--FE, 3RZ--FE)
3 Check for open in harness or engine ECU.
PREPARATION:
(a) Remove the glove compartment
(b)
Connect between terminals THA and E2 of engine ECU
E5 connector.
HINT:
Air flow meter connector is disconnected.
Before checking, do a visual and contact pressure check for the
engine ECU connector
(c)
Turn ignition switch ON.
CHE CK:
Read temp. value on the hand--held tester.
OK:
Temp. value: 140
˚
C (284
˚
F) or more
OK
Open in harness between terminals E2 or THA
repair or replace harness.
NG
Confirm good connection at engine ECU.
If OK, replace engine ECU.
4 Ch eck fo r sh o rt in h arn ess an d en g in e ECU.
PREPARATION:
(a)
Disconnect the air flow meter connector.
(b)
Turn ignition switch ON.
CHE CK:
Read temp. value on the hand--held tester.
OK:
Temp. value: -- 40
˚
C (-- 40
˚
F)
OK
Replace intake air temp. sensor.
NG
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3RZ-F,3RZ-FE