Inspection Procedure

INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE)

Disconnect the fuel injector connectors.
Turn the ignition switch to ON.

Measure the voltage.

Standard Voltage

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
F5-1 - Body ground	11 to 14 V
F6-1 - Body ground	11 to 14 V
F7-1 - Body ground	11 to 14 V
F8-1 - Body ground	11 to 14 V

Reconnect the fuel injector connectors.
NG: Go to step 6

Fig 1: Identifying Fuel Injector Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT FUEL INJECTOR ASSEMBLY (INJECTOR RESISTANCE)

Disconnect the fuel injector connectors.

Measure the resistance.

Standard Resistance

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
1 - 2	11.6 to 12.4 fi at 20°C (68°F)

Reconnect the fuel injector connectors.
NG: REPLACE FUEL INJECTOR ASSEMBLY (See REMOVAL )

Fig 2: Identifying Fuel Injector Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

Disconnect the ECM connector.
Disconnect the fuel injector connectors.

Measure the resistance.

Standard Resistance (Check for short)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
F5-2 - #10 (E5-6)	Below 1 Ω
F6-2 - #20 (E5-S)	Below 1 Ω
F7-2 - #30 (E5-2)	Below 1 Ω
F8-2 - #40 (E5-1)	Below 1 Ω

Standard Resistance (Check for open)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
F5-2 or #10 (E5-6) - Body ground	10 kΩ or higher
F6-2 - #20 (E5-5) - Body ground	10 kΩ or higher
F7-2 or #30 (E5-2) - Body ground	10 kΩ or higher
F8-2 or #40 (E5-1) - Body ground	10 kΩ or higher

Reconnect the fuel injector connectors.
Reconnect the ECM connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying Fuel Injector Connectors And ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

Disconnect the ECM connector.

Measure the resistance.

Standard Resistance (Check for open)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
E01 (E4-7) - Body ground	Below 1 Ω
E02 (E4-6) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 4: Identifying ECM Connector

G06080647

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)
1. Check the fuel injector injection and volume (See INSPECTION ).
  NG: REPLACE FUEL INJECTOR ASSEMBLY (See REMOVAL )
  
  OK: PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )

CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IGNITION SWITCH)

Disconnect the fuel injector connectors.
Disconnect the ignition switch connector.

Measure the resistance.

Standard Resistance (Check for short)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
F5-1 - IG2 (I7-6)	Below 1 Ω
F6-1 - IG2 (I7-6)	Below 1 Ω
F7-1 - IG2 (I7-6)	Below 1 Ω
F8-1 - IG2 (I7-6)	Below 1 Ω

Standard Resistance (Check for open)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connection	Specified Condition
F5-1 or IG2 (I7-6) - Body ground	10 kΩ or higher
F6-1 or IG2 (I7-6) - Body ground	10 kΩ or higher
F7-1 or IG2 (I7-6) - Body ground	10 kΩ or higher
F8-1 or IG2 (I7-6) - Body ground	10 kΩ or higher

Reconnect the fuel injector connectors.
Reconnect the ignition switch connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 5: Identifying Fuel Injector Connectors And Ignition Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT (See ECM POWER SOURCE CIRCUIT )