Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 111

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–399

ES

DESCRIPTION

Refer to DTC P0230 (See page 

ES-164

).

WIRING DIAGRAM

Refer to DTC P0230 (See page 

ES-166

).

INSPECTION PROCEDURE

(a) Check if there is pressure in the fuel inlet hose.

HINT:
If there is fuel pressure, you will hear the sound of fuel 
flowing.

OK

NG

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

ENHANCED OBD II / ACTIVE TEST / FUEL PUMP/ 
SPD.

(d) Check whether operating sounds can be heard while 

operating the relay using the tester.
OK:

Operating sounds can be heard from relay.

OK

NG

(a) Remove the circuit opening relay from the engine room 

R/B.

(b) Check the circuit opening relay resistance.

Standard Resistance

(c) Reinstall the circuit opening relay.

NG

Fuel Pump Control Circuit

1

CHECK FUEL PUMP OPERATION

              Go to step 10

2

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE CIRCUIT OPENING 
RELAY)

              Go to step 5

3

INSPECT CIRCUIT OPENING RELAY

B016200

Tester Connections

Specified Conditions

3 - 5

10 k

Ω or higher

3 - 5

Below 1 

Ω

(when battery voltage applied to terminals 1 and 2)

REPLACE CIRCUIT OPENING RELAY

ES–400

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

OK

(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the B3 

and E47 ECM connectors.
Standard Voltage

OK

NG

Inspect the ECM power source circuit (See page 

ES-384

).

NG

OK

(a) Remove the fuel pump relay from the engine room R/B.
(b) Check the fuel pump relay resistance.

Standard Resistance

(c) Reinstall the fuel pump relay.

NG

OK

4

INSPECT ECM (FC VOLTAGE)

B3

E47

E1 (-)

FC (+)

ECM Connector

G100798E16

Tester Connections

Specified Conditions

FC (E47-10) - E1 (B3-1)

11 to 14 V

REPLACE ECM (See page 

ES-446

)

CHECK AND REPLACE HARNESS AND CONNECTOR (ECM - CIRCUIT OPENING RELAY - 
IGNITION SWITCH)

5

INSPECT ECM POWER SOURCE CIRCUIT

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

6

INSPECT FUEL PUMP RELAY ASSEMBLY

A030519E02

Tester Connections

Specified Conditions

3 - 4

Below 1 

Ω

3 - 5

10 k

Ω or higher

3 - 4

10 k

Ω or higher

(when battery voltage applied to terminals 1 and 2)

3 - 5

Below 1 

Ω

(when battery voltage applied to terminals 1 and 2)

REPLACE FUEL PUMP RELAY ASSEMBLY

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–401

ES

(a) Inspect the fuel pump resistance.

(1) Measure the resistance between terminals 4 and 5.

Standard Resistance:

0.2 to 3.0 

Ω at 20°C (68°F)

(b) Inspect the fuel pump operation.

(1) Apply battery voltage to both terminals. Check that 

the pump operates.
NOTICE:
•

These tests must be done quickly (within 10 
seconds) to prevent the coil from burning 
out.

•

Keep the fuel pump as far away from the 
battery as possible.

•

Always do the switching at the battery side.

NG

OK

(a) Check the harness and connector between the fuel 

pump and fuel pump relay.
(1) Disconnect the L5 fuel pump connector.
(2) Remove the fuel pump relay from the engine room 

R/B.

(3) Check the resistance.

Standard Resistance (Check for open)

Standard Resistance (Check for short)

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

(b) Check the harness and connector between the fuel 

pump and body ground.
(1) Disconnect the fuel pump connector.
(2) Check the resistance.

Standard Resistance (Check for open)

(3) Reconnect the fuel pump connector.

7

INSPECT FUEL PUMP ASSEMBLY

Component Side:

Fuel Pump

A074356E22

REPLACE FUEL PUMP ASSEMBLY (See 
page 

FU-27

)

8

CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP RELAY, FUEL PUMP - 
BODY GROUND)

1

4
2

5

3

Fuel Pump Relay

Fuel Pump Connector

Wire Harness Side:

Engine Room R/B:

L5

Front View

A133464E01

Tester Connections

Specified Conditions

Fuel pump (L5-4) - Fuel pump relay (4)

Below 1 

Ω

Tester Connections

Specified Conditions

Fuel pump (L5-4) or Fuel pump relay (4) - Body 

ground

10 k

Ω or higher

Tester Connections

Specified Conditions

Fuel pump (L5-5) - Body ground

Below 1 

Ω

ES–402

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

NG

OK

(a) Remove the circuit opening relay from the engine room 

R/B.

(b) Remove the fuel pump relay from the engine room R/B.
(c) Check the resistance.

Standard Resistance (Check for open)

Standard Resistance (Check for short)

(d) Reinstall the circuit opening relay.
(e) Reinstall the fuel pump relay.

NG

OK

(a) Remove the fuel pump relay from the engine room R/B.
(b) Check the fuel pump relay resistance.

Standard Resistance

(c) Reinstall the fuel pump relay.

NG

OK

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

9

CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY - FUEL PUMP RELAY)

1

4
2

5

3

1

2

5

3

Fuel Pump Relay

Circuit Opening Relay

Engine Room R/B:

Engine Room R/B:

A133465E01

Tester Connections

Specified Conditions

Circuit opening relay (3) - Fuel pump relay (3)

Below 1 

Ω

Tester Connections

Specified Conditions

Circuit opening relay (3) or Fuel pump relay (3) - 

Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

CHECK AND REPAIR HARNESS AND CONNECTOR (EFI RELAY - CIRCUIT OPENING RELAY)

10

INSPECT FUEL PUMP RELAY ASSEMBLY

A030519E02

Tester Connections

Specified Conditions

3 - 4

Below 1 

Ω

3 - 5

10 k

Ω or higher

3 - 4

10 k

Ω or higher

(when battery voltage applied to terminals 1 and 2)

3 - 5

Below 1 

Ω

(when battery voltage applied to terminals 1 and 2)

REPLACE FUEL PUMP RELAY ASSEMBLY