Sfi System Fuel Injector Circuit
Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE)
INSPECT FUEL INJECTOR ASSEMBLY
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)
CHECK HARNESS AND CONNECTOR (IG2 RELAY - FUEL INJECTOR ASSEMBLY)
SFI SYSTEM - Fuel Injector Circuit |
DESCRIPTION
The fuel injectors are located on the intake manifold. They inject fuel into the cylinders based on the signals from the ECM.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) |
Disconnect the fuel injector assembly connectors.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Cylinder
| Tester Connection
| Switch Condition
| Specified Condition
|
No. 1
| B16-1 - Ground
| Ignition switch ON
| 11 to 14 V
|
No. 2
| B15-1 - Ground
| Ignition switch ON
| 11 to 14 V
|
No. 3
| B14-1 - Ground
| Ignition switch ON
| 11 to 14 V
|
No. 4
| B13-1 - Ground
| Ignition switch ON
| 11 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector
(to Fuel Injector Assembly)
|
Turn the ignition switch off.
Reconnect the fuel injector assembly connectors.
| 2.INSPECT FUEL INJECTOR ASSEMBLY |
Inspect the fuel injector assembly (RAV4_ACA30 RM000000VZW010X_01_0001.html).
| 3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) |
Disconnect the fuel injector assembly connectors.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
B16-2 - B32-108 (#10)
| Always
| Below 1 Ω
|
B15-2 - B32-107 (#20)
| Always
| Below 1 Ω
|
B14-2 - B32-106 (#30)
| Always
| Below 1 Ω
|
B13-2 - B32-105 (#40)
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B16-2 or B32-108 (#10) - Body ground
| Always
| 10 kΩ or higher
|
B15-2 or B32-107 (#20) - Body ground
| Always
| 10 kΩ or higher
|
B14-2 or B32-106 (#30) - Body ground
| Always
| 10 kΩ or higher
|
B13-2 or B32-105 (#40) - Body ground
| Always
| 10 kΩ or higher
|
Reconnect the fuel injector assembly connectors.
Reconnect the ECM connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) |
|
|
| 4.CHECK HARNESS AND CONNECTOR (IG2 RELAY - FUEL INJECTOR ASSEMBLY) |
Disconnect the fuel injector assembly connectors.
Remove the IG2 relay from the engine room No. 1 relay block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
B16-1 - IG2 relay (IG2) terminal 5
| Always
| Below 1 Ω
|
B15-1 - IG2 relay (IG2) terminal 5
| Always
| Below 1 Ω
|
B14-1 - IG2 relay (IG2) terminal 5
| Always
| Below 1 Ω
|
B13-1 - IG2 relay (IG2) terminal 5
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B16-1 or IG2 relay (IG2) terminal 5 - Body ground
| Always
| 10 kΩ or higher
|
B15-1 or IG2 relay (IG2) terminal 5 - Body ground
| Always
| 10 kΩ or higher
|
B14-1 or IG2 relay (IG2) terminal 5 - Body ground
| Always
| 10 kΩ or higher
|
B13-1 or IG2 relay (IG2) terminal 5 - Body ground
| Always
| 10 kΩ or higher
|
Reconnect the fuel injector connector.
Reinstall the the IG2 relay.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - FUEL INJECTOR ASSEMBLY) |
|
|
