Toyota Tundra. Manual — part 1375

Fig. 134: Waveform Graph

Reference: Inspection using an oscilloscope.

While cranking or idling the engine, check the waveform between terminals IGT (1 to 8) and E1, and IGF1 or
IGF2 and E1 of the ECM connector.

WAVEFORM REFERENCE

MONITOR DESCRIPTION

P0354
P0355
P0356
P0357
P0358

No IGF signal to ECM while engine
running (1 trip detection logic)

between ignition coil with igniter and ECM



No. 1 to No. 8 ignition coils with igniters



ECM

Item

Content

Terminal

CH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7, IGT8 - E1 CH2: IGF1, IGF2 - E1

Equipment Setting

2 V/DIV.

20 msec./DIV.

Condition

Cranking or idling

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 135: Ignition Confirmation Signal

If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in
the igniter and sets a DTC.

If the malfunction is not repaired successfully, a DTC is set 1 second after the engine is next started.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

Related DTCs

P0351: Igniter (cylinder 1) malfunction
P0352: Igniter (cylinder 2) malfunction
P0353: Igniter (cylinder 3) malfunction
P0354: Igniter (cylinder 4) malfunction
P0355: Igniter (cylinder 5) malfunction
P0356: Igniter (cylinder 6) malfunction
P0357: Igniter (cylinder 7) malfunction
P0358: Igniter (cylinder 8) malfunction

Required Sensors/Components (Main)

Igniter

Required Sensors/Components (Related)

Crankshaft position sensor

Frequency of Operation

Continuous

Duration

About 1 second

MIL Operation

Immediate

Sequence of Operation

None

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE

WIRING DIAGRAM

Monitor runs whenever following DTCs not present

None

Either of following conditions A or B met

-

A. Engine RPM

1500 RPM or less

B. Starter

OFF

Either of following conditions C or D met

-

C. Both of following conditions (a) and (b) met

-

(a) Engine speed

500 RPM or less

(b) Battery voltage

6 V or higher

D. All of following conditions (a), (b) and (c) met

-

(a) Engine speed

More than 500 RPM

(b) Battery voltage

10 V or higher

(c) Number of sparks after CPU reset

5 sparks or more

IGF signal ECM does not receive any IGF signal despite ECM sending IGT signal to igniter

IGF signal

Igniter transmits IGF signal when it receives IGT signal from ECM

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 136: Ignition Coil - Wiring Diagram (1 Of 2)

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra