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
Note
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
CHECK FUEL INJECTOR (POWER SOURCE)
*1 | Front view of wire harness connector (to Fuel Injector) |
Disconnect the fuel injector connectors.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||||||||||
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Turn the ignition switch off.
Reconnect the fuel injector connectors.
NG |
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY [IGT/INJ RELAY] - FUEL INJECTOR) Click here |
OK |
INSPECT FUEL INJECTOR
Inspect the fuel injector Click here.
NG |
REPLACE FUEL INJECTOR Click here |
OK |
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) | |||||||||||||||
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Standard Resistance (Check for short) | |||||||||||||||
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Reconnect the fuel injector connectors.
Reconnect the ECM connector.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR - ECM) |
OK |
REPLACE ECM Click here
CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY [IGT/INJ RELAY] - FUEL INJECTOR)
Disconnect the fuel injector connectors.
Remove the integration 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) | |||||||||||||||
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|
Standard Resistance (Check for short) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reinstall the integration relay.
Reconnect the fuel injector connector.
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY [IGT/INJ RELAY] - FUEL INJECTOR) |
OK |
REPLACE ECM POWER SOURCE CIRCUIT Click here