Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 57

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–183

ES

Standard (Cylinder No. 5)

Standard (Cylinder No. 6)

(e) Reconnect the injector connector.
(f)

Reconnect the ECM connector.

NG

OK

(a) Check the injector injection (whether fuel volume is high 

or low, and whether injection pattern is poor).

NG

OK

NG

OK

(a) Check the air induction system for vacuum leakage.

OK:

No leakage from air induction system.

NG

OK

B21-1 - #40 (B3-5)

Below 1 

Ω

Tester Connections

Specified Conditions

B9-2 - Ground

11 to 14 V

B9-1 - Ground

10 k

Ω or higher

B9-1 - #50 (B3-6)

Below 1 

Ω

Tester Connections

Specified Conditions

B18-2 - Ground

11 to 14 V

B18-1 - Ground

10 k

Ω or higher

B18-1 - #60 (B3-7)

Below 1 

Ω

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

Tester Connections

Specified Conditions

11

CHECK FUEL INJECTOR OF MISFIRING CYLINDER

REPLACE FUEL INJECTOR ASSEMBLY (See 
page 

FU-11

)

12

CHECK VALVE CLEARANCE OF MISFIRING CYLINDER

ADJUST VALVE CLEARANCE (See page 

EM-

8

)

13

CHECK AIR INDUCTION SYSTEM

REPAIR OR REPLACE AIR INDUCTION 
SYSTEM

ES–184

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

(a) Remove the cylinder head cover.
(b) Turn the crankshaft pulley, and align its groove with the 

timing mark "0" of the timing chain cover.

(c) Check that the timing marks of the camshaft timing gears 

are aligned with the timing marks of the bearing cap as 
shown in the illustration.
If not, turn the crankshaft 1 revolution (360

°) and align 

the marks as above.
OK:

Timing marks on camshaft timing gears are aligned 
as shown in illustration.

(d) Reinstall the cylinder head cover.

NG

OK

(a) Check the fuel pressure (See page 

FU-6

).

NG

OK

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

ENHANCED OBD II / DATA LIST / PRIMARY / 
COOLANT TEMP.

(e) Read the COOLANT TEMP twice, when the engine is 

both cold and warmed up.
Standard:

With cold engine: Same as ambient air 
temperature.
With warm engine: 80

°C to 100°C (176°F to 212°F).

14

CHECK VALVE TIMING

RH Bank

Timing Marks

Timing Marks

Timing Marks

LH Bank

G036290E03

ADJUST VALVE TIMING

15

CHECK FUEL PRESSURE

CHECK AND REPLACE FUEL PUMP, 
PRESSURE REGULATOR, FUEL PIPE LINE 
AND FILTER

16

READ VALUE USING INTELLIGENT TESTER (COOLANT TEMP)

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–185

ES

NG

OK

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

ENHANCED OBD II / DATA LIST / PRIMARY / MAF and 
COOLANT TEMP.

(e) Allow the engine to idle until the COOLANT TEMP 

reaches 75

°C (167°F) or more.

(f)

Read the MAF with the engine in an idling condition and 
at an engine speed of 2,500 rpm.
Standard:

MAF while engine idling: 3.2 to 4.7 g/sec (shift 
position: N, A/C: OFF).
MAF at engine speed of 2,500 rpm: 13.1 to 18.9 g/
sec (shift position: N, A/C: OFF).

NG

OK

REPLACE ENGINE COOLANT 
TEMPERATURE SENSOR (See page 

ES-424

)

17

READ VALUE USING INTELLIGENT TESTER (MAF)

REPLACE MASS AIR FLOW METER (See 
page 

ES-409

)

CHECK FOR INTERMITTENT PROBLEMS

ES–186

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

DESCRIPTION

A flat type knock sensor (non-resonant type) has a structure that can detect vibrations over a wide band of 
frequencies: between approximately 6 kHz and 15 kHz.
Knock sensors are fitted onto the engine block to detect engine knocking.
The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed.
The voltage is generated when the engine block vibrates due to knocking. Any occurrence of engine 
knocking can be suppressed by delaying the ignition timing.

HINT:
When any of DTCs P0327, P0328, P0332 and P0333 are set, the ECM enters fail-safe mode. During fail- 
safe mode, the ignition timing is delayed to its maximum retardation. Fail-safe mode continues until the 
ignition switch is turned OFF.

Reference: Inspection using an oscilloscope
The correct waveform is as shown.

DTC

P0327

Knock Sensor 1 Circuit Low Input (Bank 1 or 
Single Sensor)

DTC

P0328

Knock Sensor 1 Circuit High Input (Bank 1 or 
Single Sensor)

DTC

P0332

Knock Sensor 2 Circuit Low Input (Bank 2)

DTC

P0333

Knock Sensor 2 Circuit High Input (Bank 2)

DTC No.

DTC Detection Conditions

Trouble Areas

P0327
P0332

Output voltage of knock sensor 1 or 2 is 0.5 V or less (1 trip 
detection logic)

•

Short in knock sensor 1 or 2 circuit

•

Knock sensor 1 or 2

•

ECM

P0328
P0333

Output voltage of knock sensor 1 or 2 is 4.5 V or more (1 trip 
detection logic)

•

Open in knock sensor 1 or 2 circuit

•

Knock sensor 1 or 2

•

ECM

Items

Contents

Terminals

KNK1 - EKNK

or

KNK2 - EKN2

Equipment Settings

1 V/Division,

1 msec./Division

Conditions

Keep engine speed at 4,000 rpm with

warm engine

KNK1 Signal Waveform

1 msec./ Division

GND

1V/ DIV

A085286E10