Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 112

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–403

ES

(a) Inspect the fuel pump resistor resistance.

(1) Measure the resistance.

Standard Resistance:

0.941 to 0.999 

Ω at 20°C (68°F)

NG

OK

(a) Check the harness and connector between the fuel 

pump relay and fuel pump resistor.
(1) Remove the fuel pump relay from the engine room 

R/B.

(2) Disconnect the A13 fuel pump resistor connector.
(3) Check the resistance.

Standard Resistance (Check for open)

Standard Resistance (Check for short)

(4) Reinstall the fuel pump relay.
(5) Reconnect the fuel pump resistor connector.

(b) Check the harness and connector between the fuel 

pump resistor and fuel pump.
(1) Disconnect the A13 fuel pump resistor connector.
(2) Disconnect the L5 fuel pump connector.
(3) Check the resistance.

Standard Resistance (Check for open)

Standard Resistance (Check for short)

(4) Reconnect the fuel pump resistor connector.
(5) Reconnect the fuel pump connector.

11

INSPECT FUEL PUMP RESISTOR (RESISTANCE)

2 1

Ohmmeter

A126380E01

REPLACE FUEL PUMP RESISTOR (See page 

FU-36

)

12

CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - FUEL PUMP RESISTOR - 
FUEL PUMP)

1

4
2

5

3

1 2

Fuel Pump Resistor Connector

Fuel Pump Connector

Fuel Pump Relay

Front View

Front View

Wire Harness Side:

Wire Harness Side:

Engine Room R/B:

A13

L5

A133466E01

Tester Connections

Specified Conditions

Fuel pump relay (5) - Fuel pump resistor (A13-1)

Below 1 

Ω

Tester Connections

Specified Conditions

Fuel pump relay (5) or Fuel pump resistor (A13-1) - 

Body ground

10 k

Ω or higher

Tester Connections

Specified Conditions

Fuel pump resistor (A13-2) - Fuel pump (L5-4)

Below 1 

Ω

Tester Connections

Specified Conditions

Fuel pump resistor (A13-2) or Fuel pump (L5-4) - 

Body ground

10 k

Ω or higher

ES–404

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

NG

NG

PROCEED TO NEXT CIRCUIT INSPECTION 
SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–405

ES

DESCRIPTION

This circuit opens and closes the Intake Air Control Valve (IACV) in response to changes in the engine 
load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).
When the engine speed is between 2,200 rpm and 4,100 rpm and the throttle valve opening angle is 60

° 

or more, the ECM supplies current to the VSV (ON status), to close the IACV. Under other conditions, the 
VSV is usually OFF and the IACV is open.

WIRING DIAGRAM

ACIS Control Circuit

6

4

2

5

3

1

IACV

Throttle Valve

Valve Closed (VSV: ON)

Throttle Valve
Opening Angle

Engine Speed (rpm)

2,200

60°

4,100

A115903E01

MREL

ACIS

ECM

B17

ACIS VSV

EFI No. 2

EFI

EFI

Battery

2

1

1

2

3

5

1

2

2

1

33
B1

8

E47

A133431E01

ES–406

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

INSPECTION PROCEDURE

(a) Disconnect the vacuum hose.
(b) Connect an intelligent tester to the DLC3.
(c) Turn the ignition switch ON and turn the tester ON.
(d) Select the following menu items: DIAGNOSIS / 

ENHANCED OBD II / ACTIVE TEST / INTAKE CTL 
VSV1. Operate the VSV for ACIS.

(e) Check the VSV operation when it is operated using an 

intelligent tester.
OK

(f)

Reconnect the vacuum hose.

OK

NG

(a) Check that air flows from port E to the air filter.

OK:

Air from port E flows out through the air filter.

(b) Apply the battery positive voltage across the terminals.
(c) Check that air flows from port E to port F.

OK:

Air from port E flows out through port F.

NG

OK

1

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE VSV FOR ACIS)

VSV is ON

VSV is OFF

Air

Port E

Port E

Port F

Port F

Air

Air Filter

A067588E05

Tester Operations

Specified Conditions

VSV ON

Air from port E flows out through port F

VSV OFF

Air from port E flows out through air filter

              Go to step 4

2

CHECK VSV FOR ACIS (OPERATION)

(a)

Air

Air Filter

Port E

A054315E03

(b)

Air

Port E

Port F

Battery

A054316E03

REPLACE VSV FOR ACIS (See page 

IT-6

)