Toyota 2GR-FE Manual page 304

ES–148
4
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
Wire Harness Side:
MAF Meter Connector
C2
THA
ECM Connector
ES
C55
THA
OK
REPLACE ECM (See page ES-518)
5
CHECK MASS AIR FLOW METER (CHECK FOR SHORT IN SENSOR)
C2
MAF Meter
NG
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) Disconnect the C2 MAF meter connector.
(b) Disconnect the C55 ECM connector.
(c) Measure the resistance between the terminals.
E2
(d) Reconnect the MAF meter connector.
(e) Reconnect the ECM connector.
ETHA
A127959E14
(a) Disconnect the C2 MAF meter connector.
(b) Connect the intelligent tester to the DLC3.
ECM
(c) Turn the ignition switch on (IG).
(d) Turn the tester on.
(e) Enter the following menus: DIAGNOSIS / ENHANCED
THA
(f)
ETHA
(g) Reconnect the MAF meter connector.
A084869E58
Standard resistance (Check for open)
Tester Connection
THA (C55-71) - THA (C2-1)
ETHA (C55-74) - E2 (C2-2)
Standard resistance (Check for short)
Tester Connection
THA (C55-71) or THA (C2-1) - Body ground
ETHA (C55-74) or E2 (C2-2) - Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OBD II / DATA LIST / PRIMARY / INTAKE AIR.
Read the value displayed on the tester.
Standard:
-40°C (-40°F) or higher
OK
REPLACE MASS AIR FLOW METER (See
page ES-477)
Specified Condition
Below 1 Ω
Below 1 Ω
Specified Condition
10 kΩ or higher
10 kΩ or higher