Toyota 2GR-FE Manual page 303

Result
Temperature Displayed
-40°C (-40°F)
140°C (284°F) or higher
Same as actual IAT
A
3
CHECK MASS AIR FLOW METER (CHECK FOR OPEN IN SENSOR)
MAF Meter
Wire Harness Side:
MAF Meter Connector
C2
THA
E2
NG
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(d) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / PRIMARY / INTAKE AIR.
(e) Read the value displayed on the tester.
Standard:
Same as actual Intake Air Temperature (IAT).
HINT:
• If there is an open circuit, the intelligent tester indicates -
40°C (-40°F).
• If there is a short circuit, the intelligent tester indicates
140°C (284°F) or higher.
B
C
(a) Confirm good connection of the Mass Air Flow (MAF)
meter.
ECM
(b) Disconnect the C2 MAF meter connector.
(c) Connect terminals THA and E2 of the MAF meter wire
harness side connector.
THA
(d) Connect the intelligent tester to the DLC3.
ETHA
(e) Turn the ignition switch on (IG).
(f) Turn the tester on.
(g) Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / PRIMARY / INTAKE AIR.
(h) Read the value displayed on the tester.
Standard:
140°C (284°F) or higher
(i) Reconnect the MAF meter connector.
OK
A127961E03
Proceed to
A
B
C
Go to step 5
CHECK FOR INTERMITTENT PROBLEMS
(See page ES-33)
REPLACE MASS AIR FLOW METER (See
page ES-477)
ES–147
ES