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
)
12
CHECK VALVE CLEARANCE OF MISFIRING CYLINDER
ADJUST VALVE CLEARANCE (See page
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
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
)
17
READ VALUE USING INTELLIGENT TESTER (MAF)
REPLACE MASS AIR FLOW METER (See
page
)
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
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