Toyota ZZT230 series, Repair Manual

Page: 240 / 821

)
WIRING DIAGRAM
lntak
A'
1i
(
5
e 1r emp. ensor
Built into
mass meter)
INSPECTION PROCEDURE
HINT:
L-R
Dl-29
ENGINE
ECM
SV
R
THA
1
A00310
•
If DTC P100 (Mass Air Flow Meter Circuit Malfunction),
P01 01
(Mass Air Flow meter Circuit Range/Per­
formance Ploblem), P0110 (Intake Air Temp. Circuit Malfunction),
P0115
(Engine Coolant Temp. Cir­
cuit Malf
u
ncti o n) and P0120 (Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction) are output
simultaneously, E2 (sensor ground) may
be
open.
•
Read freeze frame data us
i
n g TOYOTA hand-heJd tester or OBD II scan tool. Because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
d
e
t
er
m
in
i
n
g
whether the vehicle was
r
u
n ni
n
g
or
stopped, the engine warmed up or not, the air-fuel
ratio lean or rich, etc. at the time of the malfunction.