Toyota 2GR-FE Manual page 295

7
INSPECT ENGINE ROOM JUNCTION BLOCK (EFI RELAY)
Engine Room Junction Block
Engine Room Relay Block
OK
CHECK ECM POWER SOURCE CIRCUIT (See page ES-432)
8
CHECK HARNESS AND CONNECTOR (SENSOR GROUND)
Wire Harness Side Front View:
C2
MAF Meter Connector
NG
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
(a) Remove the engine room junction block from the engine
room R/B.
(b) Inspect the EFI relay.
(1) Measure the EFI relay resistance.
Tester Connection
1E-12 - 1E-6
1E-12 - 1E-6
(c) Reinstall the engine room junction block.
1E
NG
A140654E02
(a) Disconnect the C2 MAF meter connector.
(b) Measure the resistance between the terminals.
Standard resistance
E2G
Tester Connection
E2G (C2-4) - Body ground
(c) Reconnect the MAF meter connector.
OK
A127724E08
Standard resistance
Specified Condition
10 kΩ or higher
Bellow 1 Ω
(Apply battery voltage between terminals 1E-
9 and 1E-10)
REPLACE ENGINE ROOM JUNCTION
BLOCK
REPLACE MASS AIR FLOW METER (See
page ES-477)
ES–139
ES
Specified Condition
Below 1 Ω