A02448
ON
THA
E2
(+)
(--)
A01361
--
DIAGNOSTICS
ENGINE (1RZ--E)
DI--33
INSPECTION PROCEDURE
HINT:
If diagnostic trouble code ”22” (water temperature sensor circuit), ”24” (intake air temperature sensor circuit),
”31” (vacuum sensor circuit) and ”41”(throttle position sensor circuit) are output simultaneously, E2 (sensor
ground) may be open.
1 Check voltage between terminals THA and E2 of engine ECU connector.
PREPARATION:
(a) Remove the glove compatrment.
(b)
Turn ignition switch ON.
CHE CK:
Measure voltage between terminals THA and E2 of engine
ECU connector.
OK:
Engine Coolant Temp.
Voltage
20
˚
C (68
˚
F)
(Engine is cool)
0.5 -- 3.4 V
80
˚
C (176
˚
F)
(Engine is hot)
0.2 -- 1.0 V
OK
Check for intermittent problems
NG
2 Ch
eck in take air t emp . sen so r.
PREPARATION:
Disconnect the intake air temp. sensor connector.
CHE CK:
Measure resistance between terminals.
OK:
Resistance is within acceptable zone on chart.
Engine Coolant Temp.
Resistance
20
˚
C (68
˚
F)
2 -- 3 k
Ω
80
˚
C (176
˚
F)
0.2 -- 0.4 k
Ω
NG
Replace intake air temp. sensor.
OK
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