Sfi System Fuel Injector Circuit
Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK FUEL INJECTOR (POWER SOURCE)
INSPECT FUEL INJECTOR
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM)
INSPECT INTEGRATION NO.1 RELAY (IGT/INJ RELAY)
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IGT/INJ) - FUEL INJECTOR)
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - (IGT/INJ))
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
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK FUEL INJECTOR (POWER SOURCE) |
Disconnect the fuel injector connectors.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
B16-1 - Body ground
| Ignition switch ON
| 11 to 14 V
|
B15-1 - Body ground
| Ignition switch ON
| 11 to 14 V
|
B14-1 - Body ground
| Ignition switch ON
| 11 to 14 V
|
B13-1 - Body ground
| Ignition switch ON
| 11 to 14 V
|
Text in Illustration*1
| Front view of wire harness connector
(to Fuel Injector)
|
Turn the ignition switch off.
Reconnect the fuel injector connectors.
Inspect the fuel injector (RAV4_ACA30 RM000001EDQ01NX.html).
| 3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM) |
Disconnect the fuel injector 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 - B32-86 (#10)
| Always
| Below 1 Ω
|
B15-2 - B32-85 (#20)
| Always
| Below 1 Ω
|
B14-2 - B32-84 (#30)
| Always
| Below 1 Ω
|
B13-2 - B32-83 (#40)
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B16-2 or B32-86 (#10) - Body ground
| Always
| 10 kΩ or higher
|
B15-2 or B32-85 (#20) - Body ground
| Always
| 10 kΩ or higher
|
B14-2 or B32-84 (#30) - Body ground
| Always
| 10 kΩ or higher
|
B13-2 or B32-83 (#40) - Body ground
| Always
| 10 kΩ or higher
|
Text in Illustration*1
| Front view of wire harness connector
(to Fuel Injector)
|
*1
| Front view of wire harness connector
(to ECM)
|
Reconnect the fuel injector connectors.
Reconnect the ECM connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - ECM) |
|
|
| 4.INSPECT INTEGRATION NO.1 RELAY (IGT/INJ RELAY) |
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
1C-1 - 1B-8
| Battery voltage not applied to terminals 1B-6 and 1B-7
| 10 kΩ or higher
|
1C-1 - 1B-8
| Battery voltage applied to terminals 1B-6 and 1B-7
| Below 1 Ω
|
Text in Illustration*1
| Component without harness connected
(Integration Relay)
|
Reconnect the integration relay connector.
Reinstall the integration relay.
| | REPLACE INTEGRATION NO.1 RELAY |
|
|
| 5.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IGT/INJ) - FUEL INJECTOR) |
Disconnect the fuel injector connectors.
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
B16-1 - 1B-8
| Always
| Below 1 Ω
|
B15-1 - 1B-8
| Always
| Below 1 Ω
|
B14-1 - 1B-8
| Always
| Below 1 Ω
|
B13-1 - 1B-8
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B16-1 or 1B-8 - Body ground
| Always
| 10 kΩ or higher
|
B15-1 or 1B-8 - Body ground
| Always
| 10 kΩ or higher
|
B14-1 or 1B-8 - Body ground
| Always
| 10 kΩ or higher
|
B13-1 or 1B-8 - Body ground
| Always
| 10 kΩ or higher
|
Text in Illustration*1
| Front view of wire harness connector
(to Fuel Injector)
|
*2
| Front view of wire harness connector
(to Integration Relay)
|
*3
| Engine Room No. 1 Relay Block
|
Reconnect the integration relay connector.
Reinstall the integration relay.
Reconnect the fuel injector connectors.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IGT/INJ) - FUEL INJECTOR) |
|
|
| 6.CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - (IGT/INJ)) |
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
1A-4 - 1B-6
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
1A-4 or 1B-6 - Body ground
| Always
| 10 kΩ or higher
|
Text in Illustration*1
| Front view of wire harness connector
(to Integration Relay)
|
*2
| Engine Room No. 1 Relay Block
|
Reconnect the integration relay connector.
Reinstall the integration relay.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - (IGT/INJ)) |
|
|
