2007 TOYOTA SIENNA check engine

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–239
ES
NG
OK
(a) Replace the VVT sensor (See page ES-509).
NEXT
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the intelligent tester on.
(d) Clear the DTCs.
(e) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC / INFO / PENDING CODES.
(f) Read the DTCs.
Result
HINT:
If the engine does not start, replace the ECM.
B
AREPLACE CAMSHAFT TIMING GEAR
ASSEMBLY
5REPLACE VVT SENSOR
6CHECK WHETHER DTC OUTPUT RECURS
Display (DTC Output) Proceed to
No output A
P0340, P0342, P0343, P0345, P0347 or P0348 B
REPLACE ECM (See page ES-498)
END

ES–2402GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the C18 or C19 VVT sensor connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance :
Check for open
Check for short
(d) Reconnect the VVT sensor connector.
(e) Reconnect the ECM connector.
NG
OK
7CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM)
A165583E01
Tester Connection Specified Condition
VC (C18-3) - VC (E9-23) Below 1
VC (C19-3) - VC (E9-23) Below 1
Tester Connection Specified Condition
VC (C18-3) or VC (E9-23) - Body ground 10 k
or higher
VC (C19-3) or VC (E9-23) - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (VVT SENSOR - ECM)
REPLACE ECM (See page ES-498)

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–241
ES
HINT:
• These DTCs indicate malfunctions relating to the primary circuit.
• If DTC P0351 is set, check the No. 1 ignition coil with igniter circuit.
• If DTC P0352 is set, check the No. 2 ignition coil with igniter circuit.
• If DTC P0353 is set, check the No. 3 ignition coil with igniter circuit.
• If DTC P0354 is set, check the No. 4 ignition coil with igniter circuit.
• If DTC P0355 is set, check the No. 5 ignition coil with igniter circuit.
• If DTC P0356 is set, check the 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. High-voltage is generated in the secondary wiring
and then 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, high-
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 off, 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

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–243
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 Condition Trouble Area
P0351
P0352
P0353
P0354
P0355
P0356No IGF signal to ECM while engine is 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
Item Content
TerminalsCH1: IGT1, IGT2, IGT3, IGT4, IGT5, IGT6 - E1
CH2: IGF1 - E1
Equipment Settings 2 V/Division, 20 ms./Division
Conditions Cranking or idling
A140712E01

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–247
ES
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle was running or stopped, whether the engine was
warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of
a malfunction.
HINT:
(See page ES-211)
NG
OK
1CHECK FOR SPARKS AND CHECK SPARK PLUG OF MISFIRING CYLINDER
A140714E02
Go to step 4

ES–2482GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the I1, I2, I3, I4, I5 or I6 ignition coil with
igniter connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Check for open
Check for short
(d) Reconnect the ECM connector.
(e) Reconnect the ignition coil with igniter connector.
NG
OK
(a) Disconnect the I1, I2, I3, I4, I5 or I6 ignition coil with
igniter connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
(d) Reconnect the ignition coil connector.
NG
2CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGF1 SIGNAL
TERMINAL))
A114622E15
Tester Connection Specified Condition
IGF (I1-2) - IGF1 (E9-24) Below 1
IGF (I2-2) - IGF1 (E9-24) Below 1
IGF (I3-2) - IGF1 (E9-24) Below 1
IGF (I4-2) - IGF1 (E9-24) Below 1
IGF (I5-2) - IGF1 (E9-24) Below 1
IGF (I6-2) - IGF1 (E9-24) Below 1
Tester Connection Specified Condition
IGF (I1-2) or IGF1 (E9-24) - Body ground 10 k
or higher
IGF (I2-2) or IGF1 (E9-24) - Body ground 10 k
or higher
IGF (I3-2) or IGF1 (E9-24) - Body ground 10 k
or higher
IGF (I4-2) or IGF1 (E9-24) - Body ground 10 k
or higher
IGF (I5-2) or IGF1 (E9-24) - Body ground 10 k
or higher
IGF (I6-2) or IGF1 (E9-24) - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IGNITION COIL ASSEMBLY -
ECM)
3INSPECT ECM (IGF1 VOLTAGE)
A162489E05
Tester Connection Specified Condition
IGF1 (E9-24) - E1 (E11-1) 4.5 to 5.5 V
REPLACE ECM (See page ES-498)

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–249
ES
OK
(a) Disconnect the I1, I2, I3, I4, I5 or I6 ignition coil with
igniter connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance :
Check for open
Check for short
NG
OK
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage REPLACE IGNITION COIL ASSEMBLY (See page IG-8)
4CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM (IGT SIGNAL
TERMINAL))
A114622E16
Tester Connection Specified Condition
IGT (I1-3) - IGT1 (E9-8) Below 1
IGT (I2-3) - IGT2 (E9-9) Below 1
IGT (I3-3) - IGT3 (E9-10) Below 1
IGT (I4-3) - IGT4 (E9-11) Below 1
IGT (I5-3) - IGT5 (E9-12) Below 1
IGT (I6-3) - IGT6 (E9-13) Below 1
Tester Connection Specified Condition
IGT (I1-3) or IGT1 (E9-8) - Body ground 10 k
or higher
IGT (I2-3) or IGT2 (E9-9) - Body ground 10 k
or higher
IGT (I3-3) or IGT3 (E9-10) - Body ground 10 k
or higher
IGT (I4-3) or IGT4 (E9-11) - Body ground 10 k
or higher
IGT (I5-3) or IGT5 (E9-12) - Body ground 10 k
or higher
IGT (I6-3) or IGT6 (E9-13) - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IGNITION COIL ASSEMBLY -
ECM)
5INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5 OR IGT6 VOLTAGE)
A162489E06
Tester Connection Specified Condition
IGT1 (E9-8) - E1 (E11-1) 0.1 to 4.5 V
IGT2 (E9-9) - E1 (E11-1) 0.1 to 4.5 V
IGT3 (E9-10) - E1 (E11-1) 0.1 to 4.5 V
IGT4 (E9-11) - E1 (E11-1) 0.1 to 4.5 V
IGT5 (E9-12) - E1 (E11-1) 0.1 to 4.5 V

ES–2502GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
NG
OK
(a) Disconnect the I1, I2, I3, I4, I5 or I6 ignition coil
connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage
(d) Reconnect the ignition coil connector.
NG
OK
(a) Disconnect the I1, I2, I3, I4, I5 or I6 ignition coil with
igniter connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Check for open
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the
table below.
IGT6 (E9-13) - E1 (E11-1) 0.1 to 4.5 V
REPLACE ECM (See page ES-498)
Tester Connection Specified Condition
6INSPECT ECM (IGT1, IGT2, IGT3, IGT4, IGT5 OR IGT6 VOLTAGE)
A114623E07
Tester Connection Specified Condition
IGT1 (E9-8) - E1 (E11-1) 4.5 V or more
IGT2 (E9-9) - E1 (E11-1) 4.5 V or more
IGT3 (E9-10) - E1 (E11-1) 4.5 V or more
IGT4 (E9-11) - E1 (E11-1) 4.5 V or more
IGT5 (E9-12) - E1 (E11-1) 4.5 V or more
IGT6 (E9-13) - E1 (E11-1) 4.5 V or more
REPLACE ECM (See page ES-498)
7INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)
A054393E92
Tester Connection Specified Condition
GND (I1-4) - Body ground Below 1
GND (I2-4) - Body ground Below 1
GND (I3-4) - Body ground Below 1
GND (I4-4) - Body ground Below 1
GND (I5-4) - Body ground Below 1
GND (I6-4) - Body ground Below 1