Toyota Celica 2005 Repair Manual page 371

DI−172
16 Check fuel pressure (See page SF−1).
CHECK:
Check the fuel pressure (high or low pressure).
OK
17 Check mass air flow meter.
PREPARATION:
(a) Connect the hand−held tester or the OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON.
CHECK:
(a) Check the intake air temperature.
(1) When using hand−held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / INTAKE AIR.
(2) Read its value displayed on the hand−held tester or the OBD II scan tool.
OK:
Equivalent to ambient temperature
(b) Check the air flow rate.
(1) When using hand−held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / MAF.
(2) Read its value displayed on the hand−held tester or the OBD II scan tool.
OK:
Ignition switch ON (do not start engine)
Running without load (2,500 rpm)
From idling to quickly accelerating
OK
2005 CELICA (RM1131U)
DIAGNOSTICS
Condition
Idling
− ENGINE (1ZZ−FE)
NG Check and repair fuel pump, fuel pipe line and
filter (See page SF−6).
mass air flow meter
NG Repair
370
Air flow rate (gm/s)
0
4 to 6
13 to 20
Air flow rate fluctuates
.