Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 566 / 1976

FI6448
Intake Air Temp. Sensor
(Inside the mass air flow meter)
ECM
5V
THA
E2
E1
4
5
R
L-Y
BR
E11
E11
22
18
W
DI-28
- DIAGNOSTICS ENGINE
182
Author: Date:
2001 SIENNA (RM787U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
If DTCs P0110, P0115 and P0120 are output simultaneously, E2 (Sensor Ground) may be open.
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
determining whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel
ratio lean or rich, etc. at the time of the malfunction.
1 Connect OBD II scan tool or TOYOTA hand-held tester, and read value of
intake air temp.
PREPARATION:
(a)
Connect the OBD II scan tool or TOYOTA hand-held tester to the DLC3.
(b) Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand-held tester main switch
ON.
CHECK:
Read temp. value on the OBD II scan tool or TOYOTA hand-held tester.
OK:
Same as actual intake air temp.
HINT:
If there is open circuit, OBD II scan tool or TOYOTA hand-held tester indicates -40
°C (−40°F).
If there is short circuit, OBD II scan tool or TOYOTA hand-held tester indicates 140
°C (284°F) or more.
NG -40
°
C (-40
°F
) ... Go to step 2.
140
°
C (284
°F
) or more ... Go to step 4.
OK