Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 108

1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

ES–387

ES

*

Pressures A to G are indicated in the diagram below.

$3D

$CD

Multiply by 0.001

kPa

Test value for leak detection pump stuck ON (P2402)

Refer to pressure A

*

$3D

$CE

Multiply by 0.001

kPa

Test value for vent valve stuck OFF (vent) (P2420)

Refer to pressure C

*

$3D

$CF

Multiply by 0.001

kPa

Test value for vent valve stuck ON (P2419)

Refer to pressure A

*

$3D

$D0

Multiply by 0.001

kPa

Test value for reference orifice low flow (P043E)

Refer to pressure B

*

$3D

$D1

Multiply by 0.001

kPa

Test value for reference orifice high flow (P043F)

Refer to pressure A

*

$3D

$D4

Multiply by 0.001

kPa

Test value for purge VSV stuck closed (P0441)

Refer to pressure F

*

$3D

$D5

Multiply by 0.001

kPa

Test value for purge VSV stuck open (P0441)

Refer to pressure E

*

$3D

$D7

Multiply by 0.001

kPa

Test value for purge flow insufficient (P0441)

Refer to pressure G

*

MID

TID

Scaling

Unit

Description

ES–388

1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

ES

Key-off Monitor:

Purge VSV

Vent Valve

Leak Detection Pump

Atmosphere: 0 kPa-g

Criterion 1: -1 kPa-g

Criterion 5: -4.85 kPa-g

Elapsed Time

Monitor Start

Criterion 2
(Criterion 4 x 0.2)

Criterion 3: 0.3 kPa-g

Criterion 4

EVAP Pressure

(Reference)

ON

ON (Closed)

Within 15 minutes

10
seconds

10
seconds

60 seconds

60 seconds

4

B

A

C

ON (Open)

D

E

F

Criterion 6: 0.3 kPa-g

Purge Flow Monitor:

Sequence

Purge VSV

Vent Valve

Criterion 7: 0.1 kPa-g

EVAP Pressure (Reference)

ON (Closed)

ON (Open)

1

2

G

Criterion 8: 0.5 kPa-g

If pressure change in sequence 1 is
smaller than criterion 7 and pressure
change in sequence 2 is smaller than
criterion 8, purge flow is insufficient.

If pressure change in sequence 1 is
greater than criterion 7, purge flow
monitor is completed (functioning
normally).

(0 mmHg-g)

(-7.5 mmHg-g)

(-36.4 mmHg-g)

(2.25 mmHg-g)

(2.25 mmHg-g)

(3.75 mmHg-g)

(0.75 mmHg-g)

A106747E07

1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

ES–389

ES

DESCRIPTION

When the ignition switch is turned ON, the battery voltage is applied to terminal IGSW of the ECM. The
ECM MREL output signal causes a current to flow to the coil, closing the contacts of the EFI relay and
supplying power to terminal +B of the ECM.
If the ignition switch is turned OFF, the ECM holds the EFI relay ON for a maximum of 2 seconds to allow
for the initial setting of the throttle valve.

WIRING DIAGRAM

ECM Power Source Circuit

ECM

IGSW

+B

+B2

MREL

E1

IGN

EFI

IG2

AM2

EFI

AM2

Battery

Ignition Switch

A1

1

1

1

2

2

2

3

5

7

6

9

E47

1

E47

2

E47

8

E47

1

B3

A133430E01

ES–390

1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

ES

INSPECTION PROCEDURE

(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the E47

and B3 ECM connectors.
Standard Voltage

OK

NG

(a) Disconnect the B3 ECM connector.
(b) Check the resistance.

Standard Resistance (Check for open)

(c) Reconnect the ECM connector.

NG

OK

(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the E47

and B3 ECM connectors.
Standard Voltage

OK

NG

1

INSPECT ECM (+B VOLTAGE)

B3

E47

E1

+B

ECM Connector

G100798E08

Tester Connections

Specified Conditions

+B (E47-1) - E1 (B3-1)

11 to 14 V

PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

2

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

B3

ECM Connector

E1

G035617E11

Tester Connections

Specified Conditions

E1 (B3-1) - Body ground

Below 1

Ω

REPAIR OR REPLACE HARNESS OR
CONNECTOR

3

INSPECT ECM (IGSW VOLTAGE)

B3

E47

E1

IGSW

ECM Connector

G100798E09

Tester Connections

Specified Conditions

IGSW (E47-9) - E1 (B3-1)

11 to 14 V

Go to step 6