2ZR-FE ENGINE CONTROL  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

A296678E40
0.365,1.958 1.74,2.156 1.375,0.198 10 false IG2 1.625,1.813 1.938,2 0.313,0.188 10 false IG2 2.208,0.875 2.406,1.073 0.198,0.198 10 false 5 2.208,1.323 2.406,1.521 0.198,0.198 10 false 2 1.313,0.875 1.51,1.073 0.198,0.198 10 false 3 1.302,1.323 1.5,1.521 0.198,0.198 10 false 1 1.323,3.167 1.99,3.365 0.667,0.198 10 false E4 3.865,0.906 4.063,1.104 0.198,0.198 10 false 1 0.958,3.083 1.625,3.281 0.667,0.198 10 false AM2 1.156,4.646 1.823,4.844 0.667,0.198 10 false E108 1.333,3.313 3.063,3.656 1.729,0.344 10 false Ignition Switch Assembly*1 1.792,3.021 2.458,3.219 0.667,0.198 10 false AM2 2.385,3.021 3.052,3.219 0.667,0.198 10 false IG2 1.615,2.813 1.813,3.01 0.198,0.198 10 false 4 2.698,2.813 2.896,3.01 0.198,0.198 10 false 3 1.146,4.802 2.958,5.125 1.813,0.323 10 false Certification ECU (Smart Key ECU Assembly)*2 1.75,4.229 2.417,4.427 0.667,0.198 10 false IG2D 2.146,4.135 2.344,4.333 0.198,0.198 10 false 9 0.406,5.073 1.073,5.271 0.667,0.198 10 false FL MAIN 0.5,6.771 1.167,6.969 0.667,0.198 10 false Battery 3.865,2.135 4.063,2.333 0.198,0.198 10 false 1 3.844,3.406 4.042,3.604 0.198,0.198 10 false 1 3.854,4.656 4.052,4.854 0.198,0.198 10 false 1 4.469,0.906 4.667,1.104 0.198,0.198 10 false 2 4.479,2.135 4.677,2.333 0.198,0.198 10 false 2 4.479,3.417 4.677,3.615 0.198,0.198 10 false 2 4.479,4.646 4.677,4.844 0.198,0.198 10 false 2 3.5,1.229 3.813,1.417 0.313,0.188 10 false B10 3.5,1.375 5.323,1.563 1.823,0.188 10 false No. 1 Fuel Injector Assembly 3.49,2.458 3.802,2.646 0.313,0.188 10 false B11 3.49,2.615 5.313,2.802 1.823,0.188 10 false No. 2 Fuel Injector Assembly 3.385,4.969 3.698,5.156 0.313,0.188 10 false B13 3.448,3.938 5.271,4.125 1.823,0.188 10 false No. 3 Fuel Injector Assembly 3.448,3.781 3.76,3.969 0.313,0.188 10 false B12 3.385,5.135 5.208,5.323 1.823,0.188 10 false No. 4 Fuel Injector Assembly 5.469,7.333 5.781,7.521 0.313,0.188 10 false B64 5.844,7.333 6.313,7.531 0.469,0.198 10 false ECM 5.167,0.885 5.479,1.073 0.313,0.188 10 false 98 5.188,2.125 5.5,2.313 0.313,0.188 10 false 95 5.198,3.385 5.51,3.573 0.313,0.188 10 false 96 5.198,6.188 5.51,6.375 0.313,0.188 10 false 57 5.198,6.708 5.51,6.896 0.313,0.188 10 false 58 5.438,6.188 5.75,6.375 0.313,0.188 10 false E01 5.417,6.719 5.729,6.906 0.313,0.188 10 false E02 5.458,4.635 5.771,4.823 0.313,0.188 10 false #40 5.188,4.635 5.5,4.823 0.313,0.188 10 false 97 5.427,3.385 5.74,3.573 0.313,0.188 10 false #30 5.448,2.135 5.76,2.323 0.313,0.188 10 false #20 5.427,0.885 5.74,1.073 0.313,0.188 10 false #10 0.75,5.896 3.271,6.188 2.521,0.292 10 false *1: w/o Smart Entry and Start System 0.76,6.302 3.438,6.552 2.677,0.25 10 false *2: w/ Smart Entry and Start System 1.302,2.813 1.552,3.021 0.25,0.208 10 false *1 2.563,4.104 3.229,4.302 0.667,0.198 10 false *2 2.854,2.813 3.521,3.01 0.667,0.198 10 false *1

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.


PROCEDURE

1.CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
A194105C57
0.406,1.958 0.833,2.219 0.427,0.26 0.406,1.656 0.833,1.917 0.427,0.26 0.406,2.271 0.833,2.531 0.427,0.26 0.406,2.583 0.833,2.844 0.427,0.26 0.177,0.115 0.583,0.365 0.406,0.25 10 false *a 0.51,2.031 0.802,2.198 0.292,0.167 10 false B11 0.51,1.708 0.813,1.906 0.302,0.198 10 false B10 0.51,2.344 0.948,2.677 0.438,0.333 10 false B12 0.521,2.646 1.073,2.875 0.552,0.229 10 false B13
*a Front view of wire harness connector
(to Fuel Injector Assembly)


a.

Disconnect the fuel injector assembly connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition
B10-1 - Body ground Ignition switch ON 11 to 14 V
B11-1 - Body ground Ignition switch ON 11 to 14 V
B12-1 - Body ground Ignition switch ON 11 to 14 V
B13-1 - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

2.INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)

NG

4.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IG2 RELAY)
2.INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME)
a.

Inspect the fuel injector assembly.

Click hereEngine / Hybrid System>2ZR-FE FUEL>FUEL INJECTOR>INSPECTION

HINT:

Perform "Inspection After Repair" after replacing the fuel injector assembly.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>INITIALIZATION



Result:
Proceed to
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)

NG

REPLACE FUEL INJECTOR ASSEMBLY

Click hereEngine / Hybrid System>2ZR-FE FUEL>FUEL INJECTOR>REMOVAL


3.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM)
a.

Disconnect the fuel injector assembly connector.


b.

Disconnect the ECM connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
B10-2 - B64-98 (#10) Always Below 1 Ω
B11-2 - B64-95 (#20) Always Below 1 Ω
B12-2 - B64-96 (#30) Always Below 1 Ω
B13-2 - B64-97 (#40) Always Below 1 Ω
B10-2 or B64-98 (#10) - Body ground and other terminals Always 10 kΩ or higher
B11-2 or B64-95 (#20) - Body ground and other terminals Always 10 kΩ or higher
B12-2 or B64-96 (#30) - Body ground and other terminals Always 10 kΩ or higher
B13-2 or B64-97 (#40) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IG2 RELAY)
a.

Disconnect the fuel injector assembly connector.


b.

Remove the IG2 relay from the engine room relay block and junction block assembly.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
B10-1 - 5 (IG2 relay) Always Below 1 Ω
B11-1 - 5 (IG2 relay) Always Below 1 Ω
B12-1 - 5 (IG2 relay) Always Below 1 Ω
B13-1 - 5 (IG2 relay) Always Below 1 Ω
B10-1 or 5 (IG2 relay) - Body ground and other terminals Always 10 kΩ or higher
B11-1 or 5 (IG2 relay) - Body ground and other terminals Always 10 kΩ or higher
B12-1 or 5 (IG2 relay) - Body ground and other terminals Always 10 kΩ or higher
B13-1 or 5 (IG2 relay) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

CHECK ECM POWER SOURCE CIRCUIT

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>ECM Power Source Circuit


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR