2001 TOYOTA SEQUOIA oil

DI±216
± DIAGNOSTICSENGINE
410 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0340 Camshaft Position Sensor ºAº Circuit
(Bank 1 or Single Sensor)
DTC P0341
Camshaft Position Sensor ºAº Circuit Range/Per-
formance (Bank 1 or Single Sensor)
DTC P0345 Camshaft Position Sensor ºAº Circuit
(Bank 2)
DTC P0346 Camshaft Position Sensor ºAº Circuit
Range/Performance (Bank 2)
CIRCUIT DESCRIPTION
The camshaft position sensor consists of a magnet, an iron core and a pick±up coil. This sensor monitors
a timing rotor located on the camshaft and is used by the ECM to detect the camshaft angle. The camshaft
rotation synchronizes with the crankshaft rotation, and this sensor communicates the rotation of the cam-
shaft timing rotor as a pulse signal to the ECM. Based on the signal, the ECM controls fuel injection time
and ignition timing.
If there is no signal from the camshaft position sensor even though the engine is turning or the rotation of
the camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction in the sensor
and sets a DTC.
DTC No.DTC Detection ConditionTrouble Area
P0340
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic)
P0340
P0345No camshaft position sensor signal to ECM with engine
speed 600 rpm or more (1 trip detection logic)
Open or short in camshaft position sensor circuit

VVT sensor
P0341
P0346
While crankshaft rotates twice, camshaft position sensor
signal will be input to ECM 12 times or more (1 trip detec-
tion logic)

Hint:
Under normal condition, the camshaft position signal is
input into the ECM 3 times per 2 engine revolutions
VVT sensor

Camshaft

Jumping teeth of timing belt

ECM
DICEZ±02

± DIAGNOSTICSENGINE
DI±221
415 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0351 Igniter Coil ºAº Primary/Secondary Circuit
DTC P0352 Igniter Coil ºBº Primary/Secondary Circuit
DTC P0353 Igniter Coil ºCº Primary/Secondary Circuit
DTC P0354 Igniter Coil ºDº Primary/Secondary Circuit
DTC P0355 Igniter Coil ºEº Primary/Secondary Circuit
DTC P0356 Igniter Coil ºFº Primary/Secondary Circuit
DTC P0357 Igniter Coil ºGº Primary/Secondary Circuit
DTC P0358 Igniter Coil ºHº Primary/Secondary Circuit
HINT:

These DTCs indicate a malfunction related to primary circuit.

If DTC P0351 is displayed, check No. 1 ignition coil with igniter circuit.

If DTC P0352 is displayed, check No. 2 ignition coil with igniter circuit.

If DTC P0353 is displayed, check No. 3 ignition coil with igniter circuit.

If DTC P0354 is displayed, check No. 4 ignition coil with igniter circuit.

If DTC P0355 is displayed, check No. 5 ignition coil with igniter circuit.

If DTC P0356 is displayed, check No. 6 ignition coil with igniter circuit.

If DTC P0357 is displayed, check No. 7 ignition coil with igniter circuit.

If DTC P0358 is displayed, check No. 8 ignition coil with igniter circuit.
DICF0±02

A21429
ECM
No.1 Ignition Coil with Igniter
No. 2 Ignition
Coil with Igniter Crankshaft
Position
Sensor
Camshaft
Position
Sensor
Other Sensors:
No. 3 Ignition
Coil with Igniter
No. 4 Ignition
Coil with Igniter
No. 5 Ignition
Coil with Igniter
No. 6 Ignition
Coil with Igniter
No. 7 Ignition
Coil with Igniter
No. 8 Ignition
Coil with Igniter
TA C
To TachometerFrom Battery
Igniter
Ignition CoilSpark Plug
No. 1 Cylinder
No. 4 Cylinder
No. 5 Cylinder
No. 6 Cylinder No. 2 Cylinder
No. 3 Cylinder
No. 7 Cylinder
No. 8 Cylinder IGT1
IGF1
IGT2
IGF2
IGT3
IGT4
IGT5
IGT6
IGT7
IGT8 (Engine Coolant Temp.
Sensor, Mass Air Flow
Sensor, Throttle Position
Sensor, etc.)
DI±222
± DIAGNOSTICSENGINE
416 Author: Date:
2005 SEQUOIA (RM1146U)
CIRCUIT DESCRIPTION
These DTCs indicate a malfunction related to primary circuit.
The DIS is a 1±cylinder ignition system which ignites one cylinder with one ignition coil. In the 1±cylinder
ignition system, the one spark plug is connected to the end of the secondary winding. High voltage generated
in the secondary winding is applied directly to the spark plug. The spark of the spark plug passes from the
center electrode to the ground electrode.
The ECM determines the ignition timing and outputs the ignition signals (IGTs) for each cylinder. Using the
IGT, the ECM turns on and off the power transistor inside the igniter and this switches on and off the current
to the primary coil. When the current to the primary coil is cut off, high±voltage is generated in the secondary
coil and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts the
current to the primary coil, the igniter sends back the ignition confirmation signal (IGF) for each cylinder igni-
tion to the ECM.

A03401
IGT Signal Waveform
IGT
GND
IGF
20 msec./Division GND
A20793
Normal Ignition signal
(IGT)
Ignition
confirmation
signal (IGF)Malfunction
Circuit Open ECM
IGFIGT
IgniterIgnition Coil
Time Ignition Coil with Igniter
± DIAGNOSTICSENGINE
DI±223
417 Author: Date:
2005 SEQUOIA (RM1146U)DTC No.
DTC Detecting ConditionTrouble Area
P0351
P0352
P0353
P0354
P0355
P0356
P0357
P0358
No IGF signal to ECM while engine is running

Open or short in IGF1 or IGF2 and IGT1 to IGT8 circuit from
ignition coil with igniter to ECM

No. 1 to No. 8 ignition coil with igniter (primary ignition)

Ignition system

ECM
Reference: Inspection using the oscilloscope.
During cranking or idling, check the waveform between termi-
nals IG1 to IG8 and E1, and IGF1, IGF2 and E1 of the E6 and
E8 ECM connectors.
MONITOR DESCRIPTION
If the ECM does not receive the IGF after sending the IGT it interprets this as a fault in the igniter and sets
a DTC.

DI±224
± DIAGNOSTICSENGINE
418 Author: Date:
2005 SEQUOIA (RM1146U)
MONITOR STRATEGY
P0351No. 1 ignition coil with igniter circuit malfunction
P0352No. 2 ignition coil with igniter circuit malfunction
P0353No. 3 ignition coil with igniter circuit malfunction
RltdDTCP0354No. 4 ignition coil with igniter circuit malfunctionRelated DTCsP0355No. 5 ignition coil with igniter circuit malfunction
P0356No. 6 ignition coil with igniter circuit malfunction
P0357No. 7 ignition coil with igniter circuit malfunction
P0358No. 8 ignition coil with igniter circuit malfunction
Required sensors/componentsIgniter
Frequency of operationContinuous
Duration0.256 sec. + 4 sparks
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever these
DTCs are not presentSee page DI±18
Engine speed±1,500 rpm
Either of the following conditions is met:Condition 1 or 2
1. Following conditions are met:Condition (a) and (b)
(a) Engine speed±500 rpm
(b) Battery voltage6 V±
2. Following conditions are met:Condition (a) and (b)
(a) Engine speed500 rpm±
(b) Battery voltage10 V±
TYPICAL MALFUNCTION THRESHOLDS
Detection CriteriaThreshold
ºIgnition signal fail countºMore than 2
ºIgnition signal fail countº is on the right:When IGF does not return despite sending IGT.
COMPONENT OPERATING RANGE
Standard Value
Confirmed signal number = ignition signal number

A15470A19381
I8 Ignition Coil with Igniter No. 8
B±W
BR23
Ignition Coil with Igniter No. 7 I7
4
1
B±R
B±RECM
24
E8IGF1
IGF2
IGT8 E8
25
12E8
IGT7 9
E8
IGT6
11E8
15 E8 IGT5
E8
8IGT4
IGT3
E814
IGT2 13
E8
E8 10
IGT1
I18 Ignition SW
W±R IG2
AM25 1C2
1C3 IGN2 Instrument Panel J/B
2
1D
7 B±R 5
IG4 B±R
W±R
Engine Room J/B
2C 1
2DAM2 1
2
B
BatteryF10
Fusible Link Block4 1 2
N1 Noise Filter No. 1
B±R
1 3B±R4
BR
EC
2
I1 Ignition Coil with Igniter No. 1
B±R
I2 Ignition Coil with Igniter No. 2
1 3
4 2
B±W
BRB±R
I3 Ignition Coil with Igniter No. 3
BRBR
B±R B±R
B±R
B±R
B±R
B±R B±RB±R
3B±R1
4 2
B±W
I4 Ignition Coil with Igniter No. 4
413
2
I5 Ignition Coil with Igniter No. 5B±W
I6 Ignition Coil with Igniter No. 6
1 3
2
4
13
2
41 4 23
BR
B±W
G±R
P±L
G±W
R±W
G±B
LG±B
B±L
B±R
LG
BR
BR
BR
1J
BR
B±R
B±R
B±R
B±R
6
B±R BR
BR BRBRBR BR BR B±R
B±R
B±R
B
± DIAGNOSTICSENGINE
DI±225
419 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM

A21025
Wire Harness Side:
I1
I2
I3I4
I5I6
I7I8
Ignition Coil with Igniter Connector
B17412
E8
IGF2IGF1
ECM Connector
± DIAGNOSTICSENGINE
DI±227
421 Author: Date:
2005 SEQUOIA (RM1146U)
2 Check for open and short in harness and connector in IGF signal circuits be-
tween ECM and ignition coil with igniter.
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with
igniter connector.
(b) Disconnect the E8 ECM connector.
CHECK:
Check the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester ConnectionSpecified Condition
Ignition coil (I1±2) ± IGF1 (E8±24)Below 1 W
Ignition coil (I2±2) ± IGF2 (E8±25)Below 1 W
Ignition coil (I3±2) ± IGF1 (E8±24)Below 1 W
Ignition coil (I4±2) ± IGF2 (E8±25)Below 1 W
Ignition coil (I5±2) ± IGF1 (E8±24)Below 1 W
Ignition coil (I6±2) ± IGF2 (E8±25)Below 1 W
Ignition coil (I7±2) ± IGF1 (E8±24)Below 1 W
Ignition coil (I8±2) ± IGF2 (E8±25)Below 1 W
Ignition coil (I1±2) or IGF1 (E8±24) ±
Body ground10 kW or higher
Ignition coil (I2±2) or IGF2 (E8±25) ±
Body ground10 kW or higher
Ignition coil (I3±2) or IGF1 (E8±24) ±
Body ground10 kW or higher
Ignition coil (I4±2) or IGF2 (E8±25) ±
Body ground10 kW or higher
Ignition coil (I5±2) or IGF1 (E8±24) ±
Body ground10 kW or higher
Ignition coil (I6±2) or IGF2 (E8±25) ±
Body ground10 kW or higher
Ignition coil (I7±2) or IGF1 (E8±24) ±
Body ground10 kW or higher
Ignition coil (I8±2) or IGF2 (E8±25) ±
Body ground10 kW or higher
NG Repair or replace harness or connector.
OK

B17411
IGF1 IGF2(+) (+)E8
E6
E1 (±)
DI±228
± DIAGNOSTICSENGINE
422 Author: Date:
2005 SEQUOIA (RM1146U)
3 Disconnect ignition coil with igniter connector, and check voltage between ter-
minals IGF1, IGF2 and E1 of ECM connector.
PREPARATION:
(a) Disconnect the I1, I2, I3, I4, I5, I6, I7 or I8 ignition coil with
igniter connector.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between the E8 and E6 ECM connectors.
OK:
Standard:
Tester ConnectionSpecified Condition
IGF1 (E8±24) ± E1 (E6±1)4.5 to 5.5 V
IGF2 (E8±25) ± E1 (E6±1)4.5 to 5.5 V
NG Replace ECM (See page SF±80).
OK
Replace ignition coil with igniter.