Toyota Tundra (2015 year). Manual — part 1550
7.
CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Start the engine.
(f) Refer to the confirmation driving pattern.
(g) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(h) Read DTCs.
Result
DISPLAY (DTC OUTPUT)
PROCEED TO
No output
A
P0340, P0342, P0343, P0345, P0347 or P0348
B
HINT:
If the engine does not start, replace the ECM.
B
REPLACE ECM
A
END
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0340,P034...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000XH40XQX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0358; Ignition Coil "A" Primary / Secondary
Circuit; 2015 MY Tundra [08/2014 - ]
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
DTC
P0357
Ignition Coil "G" Primary / Secondary Circuit
DTC
P0358
Ignition Coil "H" Primary / Secondary Circuit
DESCRIPTION
HINT:
These DTCs indicate malfunctions relating to the primary circuit.
If DTC P0351 is set, check the No. 1 ignition coil circuit.
If DTC P0352 is set, check the No. 2 ignition coil circuit.
If DTC P0353 is set, check the No. 3 ignition coil circuit.
If DTC P0354 is set, check the No. 4 ignition coil circuit.
If DTC P0355 is set, check the No. 5 ignition coil circuit.
If DTC P0356 is set, check the No. 6 ignition coil circuit.
If DTC P0357 is set, check the No. 7 ignition coil circuit.
If DTC P0358 is set, check the No. 8 ignition coil circuit.
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
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
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0358...
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
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0351
P0352
P0353
P0354
P0355
P0356
P0357
No IGF signal to ECM while
engine running
(1 trip detection logic)
Ignition system
Open or short in IGF1, IGF2 or IGT1 circuit (to 8)
between ignition coil and ECM
No. 1 to No. 8 ignition coils
ECM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0358...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0358
Reference: Inspection using an oscilloscope.
Standard:
TESTER CONNECTION
TOOL SETTING
CONDITION
SPECIFIED CONDITION
D74-40 (IGT1) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-33 (IGT2) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-37 (IGT3) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-34 (IGT4) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-35 (IGT5) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-36 (IGT6) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-38 (IGT7) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-39 (IGT8) - D74-81 (E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-104 (IGF1) - D74-81
(E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
D74-105 (IGF2) - D74-81
(E1)
2 V/DIV., 20
msec./DIV.
Idling
The correct waveform is as
shown
HINT:
While cranking or idling the engine, check the waveform between terminals IGT1 (to 8) and E1,
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0351-P0358...
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