Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 62
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–203
ES
(a) Check the teeth of the signal plate.
OK:
Sensor plate teeth do not have any cracks or
deformation.
NG
OK
NEXT
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester ON.
(d) Clear DTCs (See page
).
(e) Start the engine.
(f)
Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / PENDING CODES.
(g) Read DTCs.
Result
HINT:
If the engine does not start, replace the ECM.
B
A
6
CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH PLATE)
REPLACE CAMSHAFT TIMING GEAR
ASSEMBLY
7
REPLACE VVT SENSOR
8
CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347
AND/OR P0348)
Display (DTC Output)
Proceed To
No output
A
P0340, P0342, P0343, P0345, P0347 and/or P0348
B
REPLACE ECM (See page
END
ES–204
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
•
These DTCs indicate malfunctions relating to the primary circuit.
•
If DTC P0351 is set, check No. 1 ignition coil with igniter circuit.
•
If DTC P0352 is set, check No. 2 ignition coil with igniter circuit.
•
If DTC P0353 is set, check No. 3 ignition coil with igniter circuit.
•
If DTC P0354 is set, check No. 4 ignition coil with igniter circuit.
•
If DTC P0355 is set, check No. 5 ignition coil with igniter circuit.
•
If DTC P0356 is set, check No. 6 ignition coil with igniter circuit.
DESCRIPTION
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil and one spark
plug is connected to the end of each secondary wiring. A powerful voltage, generated in the secondary
wiring, is applied directly to each spark plug. The sparks of the spark plugs pass from the center
electrodes to the ground electrodes.
The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the
IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn,
switches on and off the current to the primary coil. When the current to the primary coil is cut off, a
powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing
them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back
an ignition confirmation (IGF) signal to the ECM, for each cylinder ignition.
DTC
P0351
Ignition Coil "A" Primary / Secondary Circuit
DTC
P0352
Ignition Coil "B" Primary / Secondary Circuit
DTC
P0353
Ignition Coil "C" Primary / Secondary Circuit
DTC
P0354
Ignition Coil "D" Primary / Secondary Circuit
DTC
P0355
Ignition Coil "E" Primary / Secondary Circuit
DTC
P0356
Ignition Coil "F" Primary / Secondary Circuit
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–205
ES
Crankshaft Position Sensor
VVT Sensor
Various Sensors
TACH
ECM
Igniter
No. 1 Ignition Coil
No. 2 Ignition Coil
No. 3 Ignition Coil
No. 4 Ignition Coil
No. 5 Ignition Coil
No. 6 Ignition Coil
Ignition Coil
No. 1 Cylinder
No. 2 Cylinder
No. 3 Cylinder
No. 4 Cylinder
No. 5 Cylinder
No. 6 Cylinder
Spark Plug
From Battery
IGT1
IGF1
IGT2
IGT3
IGT4
IGT5
IGT6
To Tachometer
A122501E01
ES–206
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Reference: Inspection using an oscilloscope
While cranking or idling, check the waveform between terminals IGT(1 to 6) and E1, and IGF1 and E1 of
the ECM connector.
DTC No.
DTC Detection Conditions
Trouble Areas
P0351
P0352
P0353
P0354
P0355
P0356
No IGF signal to ECM while engine running (1 trip
detection logic)
•
Ignition system
•
Open or short in IGF1 or IGT circuit (1 to 6) between ignition coil
with igniter and ECM
•
No. 1 to No. 6 ignition coils with igniters
•
ECM
Items
Contents
Terminals
CH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6 - E1
CH2: IGF1 - E1
Equipment Settings
2 V/Division, 20 ms/Division
Conditions
Cranking or idling
CH 1
CH 2
GND
GND
IGT and IGF Signal Waveform
2V/
Division
20 msec./Division
A031764E02
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст