check engine TOYOTA SIENNA 2007 Service Repair Manual

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–433
ES
Result
A
B
C
(a) Turn the ignition switch off.
(b) Disconnect the V3 purge VSV connector.
(c) Disconnect the hose (connected to the canister) from the
purge VSV.
(d) Start the engine.
(e) Confirm that the purge VSV has no suction with your
fingers.
Result
(f) Reconnect the purge VSV connector.
(g) Reconnect the hose.
A
B
(a) Disconnect the hose (connected to the throttle body)
from the purge VSV.
(b) Start the engine.
(c) Confirm that the hose has suction with your fingers.
Result
(d) Reconnect the hose.
B
Test Result Suspected Trouble Area Proceed to
Fuel tank cap correctly installed - A
Fuel tank cap loose• Fuel tank cap improperly installed
• Defective fuel tank cap
• Fuel tank cap does not meet OEM
specificationsB
No fuel tank cap - C
Go to step 29
Go to step 27
Go to step 28
14INSPECT PURGE VSV
A136287E01Test Result Suspected Trouble Area Proceed to
No suction ECM A
Suction applied Purge VSV B
Go to step 35
Go to step 31
15CHECK EVAP HOSE (PURGE VSV - THROTTLE BODY)
A136288E01
Test Result Suspected Trouble Area Proceed to
Suction applied - A
No suction• Throttle body
• EVAP hose between
purge VSV and throttle
bodyB
Go to step 26

ES–4342GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
A
(a) Remove the purge VSV.
(b) Apply battery voltage to the terminals of the purge VSV.
(c) Using compressed air, confirm that air flows from port A
to port B.
Result
(d) Install the purge VSV.
B
A
(a) Disconnect the V3 purge VSV connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage between terminal 1 of the purge
VSV connector and body ground.
Result
(d) Reconnect the purge VSV connector.
B
A
16INSPECT VACUUM SWITCHING VALVE NO. 1 (PURGE VSV)
A136289E01
Test Result Suspected Trouble Area Proceed to
Air flows - A
No air flow Purge VSV B
Go to step 31
17CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV)
A052933E27
Test Result Suspected Trouble Area Proceed to
Between 11 V and 14 V - A
Other than result aboveWire harness or connectors
between purge VSV and ECMB
Go to step 32

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–435
ES
(a) Disconnect the E9 ECM connector and the V3 purge
VSV connector.
(b) Measure the resistance between the terminals of the
purge VSV connector and ECM connector.
Standard resistance
(c) Reconnect the purge VSV connector.
(d) Reconnect the ECM connector.
OK
NG
(a) Turn the ignition switch to the ON position.
(b) Select the following menu items on the tester:
DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST /
VENT VALVE.
(c) Measure the voltage between terminal VPMP of the
ECM connector and body ground when the vent valve is
turned ON (close) and OFF (vent) using the tester.
Result
A
B
18CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
A114636E07
Tester Connection Specified Condition
E9-34 (PRG) - V3-2 Below 1
E9-34 (PRG) - Body ground 10 k or higher
V3-1 - Body ground 10 k
or higher
Go to step 35
Go to step 32
19PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR VENT VALVE)
A162489E07Test Result Suspected Trouble Area Proceed to
Between 9 V and 14 V when
OFF
Below 3 V when ONVent valve A
Below 3 V when OFF and ON ECM B
Go to step 22
Go to step 35

ES–4382GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Select the following menu items on the tester:
DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST /
VACUUM PUMP.
(b) Measure the voltage between terminal MPMP of the
ECM connector and body ground when the vacuum
pump is turned ON and OFF using the tester.
Result
B
A
(a) Turn the ignition switch off.
(b) Disconnect the C27 canister connector.
(c) Turn the ignition switch to the ON position.
(d) Select the following menu items on the tester:
DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST /
VACUUM PUMP.
(e) Turn the vacuum pump ON.
(f) Measure the voltage between terminal 1 of the canister
connector and body ground.
Result
(g) Reconnect the canister connector.
B
23PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR PUMP MODULE (VACUUM
PUMP))
A162489E08
Test Result Suspected Trouble Area Proceed to
Between 0 V and 3 V when
OFF
Between 9 V and 14 V when
ON-A
Between 9 V and 14 V when
OFF
Between 0 V and 3 V when
ONECM B
Go to step 35
24CHECK HARNESS AND CONNECTOR (PUMP MODULE - ECM)
A165552E01
Test Result Suspected Trouble Area Proceed to
Between 9 V and 14 V - A
Between 0 V and 3 VWire harness between ECM
and vacuum pumpB
Go to step 32

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–439
ES
A
(a) Disconnect the C27 canister connector.
(b) Turn the ignition switch off.
(c) Check the resistance between terminal 6 of the canister
connector and body ground.
Result
(d) Reconnect the canister connector.
A
B
(a) Stop the engine.
(b) Disconnect the EVAP hose from the throttle body.
(c) Start the engine.
(d) Confirm that the port of the throttle body has suction with
your fingers.
Result
(e) Reconnect the EVAP hose.
A
B
HINT:
• When reinstalling the fuel tank cap, tighten it until a few
click sounds are heard.
• When replacing the fuel tank cap, use a fuel tank cap that
meets OEM specifications, and tighten it until a few click
sounds are heard.
NEXT
25CHECK HARNESS AND CONNECTOR (PUMP MODULE - BODY GROUND)
A085258E68
Test Result Suspected Trouble Area Proceed to
Below 1
Vacuum Pump A
10 k
or higherWire harness between
vacuum pump and body
groundB
Go to step 30
Go to step 32
26INSPECT THROTTLE BODY
Test Result Suspected Trouble Area Proceed to
Suction appliedEVAP hose between throttle body and
purge VSVA
No suction Throttle body B
Go to step 33
Go to step 34
27CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP
Go to step 37

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–441
ES
(c) Pressurize the EVAP system by 3.2 to 3.7 kPa (24 to 28
mmHg).
(d) Apply soapy water to the piping and the connecting parts
of the EVAP system.
(e) Look for areas where bubbles appear. This indicates a
leak point.
(f) Repair or replace the leak point.
NEXT
(a) Replace the charcoal canister assembly (See page EC-
8).
NOTICE:
When replacing the canister, check the canister
pump module interior and related pipes for water,
fuel and other liquids. If liquids are present, check
for disconnections and/or cracks in the following: 1)
the pipe from the air inlet port to the canister pump
module; 2) the canister filter; 3) the fuel tank vent
hose.
A137044E01
Go to step 37
30REPLACE CHARCOAL CANISTER ASSEMBLY

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–443
ES
(a) Remove the throttle body (See page ES-493).
(b) Check that the EVAP purge port of the throttle body is
not clogged. If necessary, replace the throttle body.
NEXT
(a) Replace the ECM (See page ES-498).
NEXT
(a) Repair the malfunctioning areas indicated by the DTCs
that had been confirmed when the vehicle was brought
in.
NEXT
NOTICE:
• In the EVAP SYSTEM CHECK (AUTO OPERATION), the
series of 5 EVAP SYSTEM CHECK steps are performed
automatically. It takes a maximum of approximately 18
minutes.
• Do not perform the EVAP SYSTEM CHECK when the
fuel tank is more than 90% full because the cut-off
valve may be closed, making the leak check of the fuel
tank unavailable.
• Do not run the engine in this step.
• When the temperature of the fuel is 35
C (95F) or
more, a large amount of vapor forms and any check
results become inaccurate. When performing an EVAP
SYSTEM CHECK, keep the temperature below 35
C
(95
F).
(a) Clear the DTCs (See page ES-39).
(b) On the intelligent tester, select the following menu items:
DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK /
EVAP SYS CHECK / AUTO OPERATION.
(c) After the SYSTEM CHECK is completed, check for
pending DTCs by selecting the following menu items:
DIAGNOSIS / ENHANCED OBD II / DTC INFO /
PENDING CODES.
HINT:
If no pending DTC is found, the repair has been
successfully completed.
34INSPECT THROTTLE BODY
Go to step 37
35REPLACE ECM
Go to step 37
36REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS
37PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)

ES–4462GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
INSPECTION PROCEDURE
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage
OK
NG
(a) Disconnect the E11 ECM connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Check for open
(c) Reconnect the ECM connector.
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
OK
NG
1INSPECT ECM (+B VOLTAGE)
A162489E09
Tester Connection Specified Condition
+B (E4-1) - E1 (E11-1) 9 to 14 V
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
2CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)
G035617E21
Tester Connection Specified Condition
E1 (E11-1) - Body ground Below 1
REPAIR OR REPLACE HARNESS OR
CONNECTOR (ECM - BODY GROUND)
3INSPECT ECM (IGSW VOLTAGE)
A162489E10
Tester Connection Specified Condition
IGSW (E4-9) - E1 (E11-1) 9 to 14 V
Go to step 8

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–447
ES
(a) Remove the IGN fuse from the driver side junction block.
(b) Measure the IGN fuse resistance.
Standard resistance:
Below 1
(c) Reinstall the IGN fuse.
NG
OK
(a) Disconnect the E4 ECM connector.
(b) Disconnect the I15 ignition switch 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 switch connector.
NG
OK
(a) Inspect the ignition or starter switch assembly (See page
ST-16).
NG
OK
4CHECK FUSE (IGN FUSE)
A080034E03
REPLACE FUSE (IGN FUSE)
5CHECK HARNESS AND CONNECTOR (IGNITION SWITCH - ECM)
A162568E02
Tester Connection Specified Condition
IG2 (I15-6) - IGSW (E4-9) Below 1
Tester Connection Specified Condition
IG2 (I15-6) or IGSW (E4-9) - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR (IGNITION SWITCH - ECM)
6INSPECT IGNITION SWITCH ASSEMBLY
REPLACE IGNITION SWITCH ASSEMBLY
(See page ST-16)

ES–4482GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Remove the AM2 fuse from the engine room junction
block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
Below 1
(c) Reinstall the AM2 fuse
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
NG
OK
(a) Remove the EFI No. 1 fuse from the engine room
junction block.
(b) Measure the EFI No. 1 fuse resistance.
Standard resistance:
Below 1
(c) Reinstall the EFI No. 1 fuse.
NG
OK
7CHECK FUSE (AM2 FUSE)
A080011E11
REPLACE FUSE (AM2 FUSE)
REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION SWITCH - BATTERY)
8INSPECT ECM (MREL VOLTAGE)
A162489E11
Tester Connection Specified Condition
MREL (E4-8) - E1 (E11-1) 9 to 14 V
REPLACE ECM (See page ES-498)
9CHECK FUSE (EFI NO.1 FUSE)
A080011E09
REPLACE FUSE (EFI NO.1 FUSE)