Toyota Sequoia (2005). Manual — part 104
B17414
E6
ECM Connector
VV2+
VV1–
VV1+
VV2–
A21029
Wire Harness Side
VVT Sensor
V16
V17
BR3795
OK
NG
Clearance
–
DIAGNOSTICS
ENGINE
DI–219
413
2
Check for open and short in harness and connector between ECM and VVT sen-
sor.
PREPARATION:
(a)
Disconnect the VVT sensor connector.
(b)
Disconnect the E6 ECM connector.
CHECK:
Measure the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester Connection
Specified Condition
VVT sensor (V16–1) – VV1+ (E6–25)
Below 1
Ω
VVT sensor (V16–2) – VV1– (E6–24)
Below 1
Ω
VVT sensor (V17–1) – VV2+ (E6–18)
Below 1
Ω
VVT sensor (V17–2) – VV2– (E6–28)
Below 1
Ω
VVT sensor (V16 –1) or
VV1+ (E6–25) – Body ground
10 k
Ω
or higher
VVT sensor (V16–2) or
VV1– (E6–24) – Body ground
10 k
Ω
or higher
VVT sensor (V17 –1) or
VV2+ (E6–18) – Body ground
10 k
Ω
or higher
VVT sensor (V17–2) or
VV2– (E6–28) – Body ground
10 k
Ω
or higher
NG
Repair or replace harness or connector.
OK
3
Check sensor installation (VVT position sensor).
CHECK:
Check the VVT position sensor installation.
OK:
The VVT sensor is installed properly.
NG
Tighten sensor installation bolt.
OK
DI–220
–
DIAGNOSTICS
ENGINE
414
4
Inspect teeth of camshaft.
PREPARATION:
Remove the cylinder head cover (See page
CHECK:
Check the camshaft.
NG
Replace camshaft.
OK
Replace Camshaft position sensor
(See page
–
DIAGNOSTICS
ENGINE
DI–221
415
DTC
P0351
Igniter Coil ”A” Primary/Secondary Circuit
DTC
P0352
Igniter Coil ”B” Primary/Secondary Circuit
DTC
P0353
Igniter Coil ”C” Primary/Secondary Circuit
DTC
P0354
Igniter Coil ”D” Primary/Secondary Circuit
DTC
P0355
Igniter Coil ”E” Primary/Secondary Circuit
DTC
P0356
Igniter Coil ”F” Primary/Secondary Circuit
DTC
P0357
Igniter Coil ”G” Primary/Secondary Circuit
DTC
P0358
Igniter Coil ”H” 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
TAC
To Tachometer
From Battery
Igniter
Ignition Coil
Spark 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
–
DIAGNOSTICS
ENGINE
416
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.
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