Toyota 2GR-FE Manual page 379

OK
17
READ VALUE OF INTELLIGENT TESTER (MAF)
OK
18
CHECK MISFIRE COUNT (CYL #1, #2, #3, #4, #5 AND #6)
A
CHECK FOR INTERMITTENT PROBLEMS
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(b) Turn the ignition switch on (IG).
(c) Turn the tester on.
(d) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / PRIMARY / COOLANT TEMP.
(e) Read the COOLANT TEMP twice, when the engine is
both cold and warmed up.
Standard:
With cold engine:
With warm engine:
NG
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on (IG).
(c) Turn the tester on.
(d) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / PRIMARY / MAF and COOLANT
TEMP.
(e) Allow the engine to idle until the COOLANT TEMP
reaches 75°C (167°F) or more.
(f) Read the MAF with the engine in an idling condition and
at an engine speed of 2,500 rpm.
Standard:
MAF while engine is idling:
MAF at an engine speed of 2,500 rpm:
NG
HINT:
• If the result of step 4 is "1 or 2 cylinders", proceed to A.
• If the result of step 4 os "more than 3 cylinders", proceed
to B.
B
Same as ambient air temperature.
Between 75°C and 95°C (167°F and 203°F).
REPLACE ENGINE COOLANT
TEMPERATURE SENSOR (See page ES-499)
Between 2.1 g/sec and 3.1 g/sec (shift position: N,
A/C: OFF).
Between 7.8 g/sec and 11.4 g/sec (shift position:
N, A/C: OFF).
REPLACE MASS AIR FLOW METER (See
page ES-477)
Go to step 5
ES–223
ES