warning light TOYOTA SIENNA 2007 Service Repair Manual

INTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMSIN–39
IN
• In the DTC check, it is very important to determine
whether the problem indicated by the DTC either: 1)
still occurs, or 2) occurred in the past but has returned
to normal. In addition, the DTC should be compared
to the problem symptom to see if they are related. For
this reason, DTCs should be checked before and after
confirmation of symptoms (i.e., whether or not
problem symptoms exist) to determine current system
conditions, as shown in the flowchart below.
• Never skip the DTC check. Failing to check DTCs
may, depending on the case, result in unnecessary
troubleshooting for systems operating normally or
lead to repairs not related to the problem. Follow the
procedures listed in the flowchart in the correct order.
Theft Deterrent System XXXXX
Engine Immobiliser System
XX
Cruise Control SystemXXX
Dynamic Laser Cruise Control System
XXX
Lighting System
XX
Wiper and Washer SystemXXXXX
Power Door Lock Control System X X X
Wireless Door Lock Control SystemXX
Key Reminder Warning System X X XX
Meter / Gauge System X X X
Audio and Visual SystemXXXX
Rear Seat Entertainment System XXXXX
Navigation System
XXXX
Clearance Sonar SystemXXXXX
Rear View Monitor System XXXXX
Power Window Control System (with Jam
Protection Function)XXX
Power Window Control System (without Jam
Protection Function)XXXXX
Power Mirror Control System (with Memory) X X X
Power Mirror Control System (without Memory)XXXXX
Front Power Seat Control System X X X
Rear No. 2 Seat Assembly (with Power Stowing
Function)XXXXX
Window Deogger SystemXXXXX
Power Slide Door System
XX
Slide Door Closer System X X X
Back Door Closer SystemXX
Power Back Door SystemXX
Sliding Roof System XXXXX
Multiplex Communication System XXXXX
CAN Communication System XXXXXSystemSYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
DTC Check
(Normal Mode)DTC Check
(Check Mode)Sensor Check/
Test Mode
(Input Signal
Check)Data List Active Test

INTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMSIN–39
IN
• In the DTC check, it is very important to determine
whether the problem indicated by the DTC either: 1)
still occurs, or 2) occurred in the past but has returned
to normal. In addition, the DTC should be compared
to the problem symptom to see if they are related. For
this reason, DTCs should be checked before and after
confirmation of symptoms (i.e., whether or not
problem symptoms exist) to determine current system
conditions, as shown in the flowchart below.
• Never skip the DTC check. Failing to check DTCs
may, depending on the case, result in unnecessary
troubleshooting for systems operating normally or
lead to repairs not related to the problem. Follow the
procedures listed in the flowchart in the correct order.
Theft Deterrent System XXXXX
Engine Immobiliser System
XX
Cruise Control SystemXXX
Dynamic Laser Cruise Control System
XXX
Lighting System
XX
Wiper and Washer SystemXXXXX
Power Door Lock Control System X X X
Wireless Door Lock Control SystemXX
Key Reminder Warning System X X XX
Meter / Gauge System X X X
Audio and Visual SystemXXXX
Rear Seat Entertainment System XXXXX
Navigation System
XXXX
Clearance Sonar SystemXXXXX
Rear View Monitor System XXXXX
Power Window Control System (with Jam
Protection Function)XXX
Power Window Control System (without Jam
Protection Function)XXXXX
Power Mirror Control System (with Memory) X X X
Power Mirror Control System (without Memory)XXXXX
Front Power Seat Control System X X X
Rear No. 2 Seat Assembly (with Power Stowing
Function)XXXXX
Window Deogger SystemXXXXX
Power Slide Door System
XX
Slide Door Closer System X X X
Back Door Closer SystemXX
Power Back Door SystemXX
Sliding Roof System XXXXX
Multiplex Communication System XXXXX
CAN Communication System XXXXXSystemSYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
DTC Check
(Normal Mode)DTC Check
(Check Mode)Sensor Check/
Test Mode
(Input Signal
Check)Data List Active Test

2GR-FE CHARGING – CHARGING SYSTEMCH–5
CH
PROBLEM SYMPTOMS TABLE
Result
Symptom Suspected Area See page
Charge Warning Light Comes ON while DrivingClutch pulley
CH-8
Generator assembly
Noise Occurs from Generator while Engine is RunningV-ribbed belt
CH-9 Clutch pulley
Generator assembly

TIRE AND WHEEL – TIRE AND WHEEL SYSTEMTW–5
TW
REPAIR
1. INTRODUCTION
(a) This section introduces ways to determine whether
the run-flat tire is repairable or not. Repair must be
performed by following the appropriate procedures.
If a flat tire occurs, it is possible to drive a maximum
of 160 km (100 miles) at a speed below 90 km/h (55
mph) due to the reinforced sidewalls. However, if
the customer continues to drive with low tire
pressure (less than about 100 kPa (1.0 kgf/cm
2,
14.5 psi) and tire pressure warning light is on), the
inside of the sidewall will gradually deteriorate and
the run-flat performance may be reduced.
Therefore, the tires may require replacement.
However, there are some cases where it is possible
to repair a run-flat tire using the same repair method
as for normal tires. Use the following flowchart to
determine if a run-flat tire is repairable.
NOTICE:
When performing repairs, follow the Rubber
Manufacturers Association (RMA) repair
procedures.
2. REPAIR PROCEDURE (CUSTOMER INTERVIEW)
(a) The tire pressure warning system can help
determine the history of the tire's use. The driving
conditions the tire was subjected to while the tire
pressure warning light was on should be obtained
from the customer. Also, make sure to ask the
following questions.
(1) Was the vehicle driven at a speed over 90 km/h
(55 mph) with the tire pressure warning light
on?
(2) Was the vehicle driven over 160 km (100 miles)
with the tire pressure warning light on?
A "Yes" response to either of the above will
greatly reduce the chance of tire repairability.
3. TECHNICIAN TIRE INSPECTION
(a) After the customer interview, it is necessary to
conduct a thorough inspection of the tire after it has
been removed from the wheel. As it is difficult to
identify a tire with low pressure visually, check the
pressure of each tire to determine the tire(s) causing
the low-pressure warning. If the tire is found to be
repairable, follow the RMA repair procedures.
NOTICE:
The deflated tire may be extremely hot, which
may cause injury, so allow the tire to cool prior
to handling.

BC–4BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
TEST MODE PROCEDURE
1. SPEED SENSOR SIGNAL CHECK (WHEN USING SST
CHECK WIRE):
HINT:
• If the ignition switch is turned from the ON to the ACC
or LOCK position during Test Mode, the DTCs of the
signal check function will be erased.
(a) Turn the ignition switch off.
(b) Check that the steering wheel is in the straight-
ahead position and move the shift lever to the P
position (Automatic Transmission) or apply the
parking brake (Manual Transmission).
(c) Using SST, connect terminals TS and CG of the
DLC3.
SST 09843-18040
(d) Turn the ignition switch to the ON position.
(e) Check that the ABS warning light is blinking in the
Test Mode.
HINT:
If the ABS warning light does not blink, inspect the
TS and CG terminal circuit and the ABS warning
light circuit.
(f) Start the engine.
(g) Using SST, perform the speed sensor signal check
in Test Mode.
SST 09843-18040
(h) Drive the vehicle straight forward.
(i) Accelerate the vehicle to a speed of 28 mph (45 km/
h) or higher for several seconds and check that the
ABS warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun.
(j) Stop the vehicle.
NOTICE:
• The speed sensor signal check may not be
completed if the steering wheel is turned or
the wheels are spun during the check.
G022987E07
BR03904E13
Trouble Area See procedure
TS and CG terminal circuitBC-64
ABS warning light circuitBC-47 or BC-50

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–5
BC
• After the ABS warning light goes off and if
vehicle speed exceeds 50 mph (80 km/h), the
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 50 mph (80 km/h).
• If the signal check has not been completed,
the ABS warning light blinks while driving
and the ABS system does not operate.
HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the Test Mode pattern while stationary.
2. READ DTC
(a) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(b) Read the number of blinks of the ABS warning light.
HINT:
• See the list of DTC.
• If every sensor is normal, the normal system
code is output. (A cycle of 0.25 second ON and
0.25 second OFF is repeated.)
• If more than 1 malfunction is detected at the
same time, the lowest numbered code will be
displayed first.
(c) After performing the check, disconnect the SST
from terminals TS and CG, TC and CG of the DLC3
and turn the ignition switch off.
3. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
G022986E01
I042842E02
Code No. Diagnosis Trouble Area
C1271/71 Low output signal of front speed sensor RH• Front speed sensor RH
• Sensor installation
• Speed sensor rotor
C1272/72 Low output signal of front speed sensor LH• Front speed sensor LH
• Sensor installation
• Speed sensor rotor
C1273/73 Low output signal of rear speed sensor RH• Rear speed sensor RH
• Sensor installation
• Speed sensor rotor

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–7
BC
(f) Check that the ABS warning light is blinking in the
Test Mode.
HINT:
If the ABS warning light does not blink, inspect the
TS and CG terminal circuit and the ABS warning
light circuit.
(g) Start the engine.
(h) Using the intelligent tester, perform the speed
sensor signal check in Test Mode.
(i) Drive the vehicle straight forward.
(j) Accelerate the vehicle to a speed of 28 mph (45 km/
h) or higher for several seconds and check that the
ABS warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun.
(k) Stop the vehicle.
NOTICE:
• The speed sensor signal check may not be
completed if the steering wheel is turned or
the wheels are spun during the check.
• After the ABS warning light goes off and if
vehicle speed exceeds 50 mph (80 km/h), a
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 50 mph (80 km/h).
• If the signal check has not been completed,
the ABS warning light blinks while driving
and the ABS system does not operate.
HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the Test Mode pattern while stationary.
5. READ DTC
(a) Read the DTC(s) by following the tester screen.
HINT:
• Refer to the intelligent tester operator's manual
for further details.
• See the list of DTC.
6. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
BR03904E13
Trouble Area See procedure
TS and CG terminal circuitBC-64
ABS warning light circuitBC-47 or BC-50
Code No. Diagnosis Trouble Area
C1271/71 Low output signal of front speed sensor RH• Front speed sensor RH
• Sensor installation
• Speed sensor rotor
C1272/72 Low output signal of front speed sensor LH• Front speed sensor LH
• Sensor installation
• Speed sensor rotor
C1273/73 Low output signal of rear speed sensor RH• Rear speed sensor RH
• Sensor installation
• Speed sensor rotor

RS–476SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR
RS
10. PERFORM INITIALIZATION
(a) Perform initialization.
HINT:
Some systems need initialization when
disconnecting the cable from the negative battery
terminal.
11. INSPECT SRS WARNING LIGHT
(a) Inspect the SRS warning light (See page RS-27).

THEFT DETERRENT – THEFT DETERRENT SYSTEMTD–3
TD
SYSTEM DESCRIPTION
1. OUTLINE OF THEFT DETERRENT SYSTEM
(a) When the theft deterrent system detects that the
vehicle is being tampered with, the system sets off
the alarm, causing the horns to sound and the lights
to light up or blink in order to alert people around the
vehicle to the theft.
(b) The theft deterrent system has 2 modes; one is the
active arming mode (see ACTIVE ARMING MODE)
and the other is passive arming mode (see
PASSIVE ARMING MODE). The passive arming
mode can be switched ON/OFF using the specified
method.
(c) Each mode has 4 states; a disarmed state, an
arming preparation state, an armed state and an
alarm sounding state.
(1) Disarmed state:
• The alarm function is not operating.
• The theft deterrent system is not operating.
(2) Arming preparation state:
• The time until the system goes into the armed
state.
• The theft deterrent system is not operating.
(3) Armed state:
• The theft deterrent system is operating.
(4) Alarm sounding state:
• Alarm function is operating.
Alarm time:
Approx. 60 sec.
Refer to table below for alarm method and time:
HINT:
If any of the doors are unlocked with no key in
the ignition key cylinder during the armed state,
a forced door lock signal will be output (see
FORCED DOOR LOCK CONTROL).
2. ACTIVE ARMING MODE
HINT:
• Active arming mode starts the alarm control
immediately after the doors are locked.
• This system activates as described in the diagram
below when one of items for each condition is met.
Alarm MethodHeadlight Blinking (approx. 0.4 second cycles)
Taillight Blinking (approx. 0.4 second cycles)
Hazard Warning Light Blinking (cycles of flasher relay)
Interior Light Illuminating
Vehicle HornSounding
(approx. 0.4 second cycles)
Security HornSounding
(approx. 0.4 second cycles)
Alarm Time Approx. 60 sec.

WS–66WINDSHIELD / WINDOWGLASS – WINDOW DEFOGGER SYSTEM
WS
PROBLEM SYMPTOMS TABLE
WINDOW DEFOGGER SYSTEM
ON-VEHICLE INSPECTION
1. INSPECT BACK WINDOW (DEFOGGER WIRE)
NOTICE:
• When cleaning the glass, wipe the glass along the
wire using a soft and dry cloth. Take care not to
damage the wires.
• Do not use detergents or glass cleaners including
abrasive ingredients.
• When measuring voltage, wrap a piece of tin foil
around the tip of the negative probe and press the
foil against the wire with your finger, as shown in
the illustration.
(a) Turn the ignition switch ON.
(b) Turn the defogger switch ON.
Symptom Suspected area See page
w/ Deicer: Front window deicer does not operate.
(indicator light ON)1. FR DEF fuse -
2. Front window deicer relayWS-69
3. Front window deicer wire -
4. Wire harness -
w/ deicer: Front window deicer does not operate.
(indicator light OFF)1. FR DEF fuse -
2. Front window deicer relayWS-69
3. Front window deicer wire -
4. Hazard warning signal switch assembly (Defogger switch) -
5. Wire harness -
Rear window defogger does not operate (indicator light
ON)1. HTR fuse -
2. Rear window defogger relayWS-69
3. Rear window deicer wire -
4. Wire harness -
Rear window defogger does not operate (indicator light
OFF)1. HTR fuse -
2. Rear window defogger relayWS-70
3. Hazard warning signal switch assembly (Defogger switch) -
4. Rear window defogger wire -
5. Wire harness -
w/ Mirror Heater: Mirror heater does not operate
(indicator light ON)1. MIR HTR fuse -
2. Outer rear view mirror assemblyMI-42
3. Wire harness -
w/ Mirror Heater: Mirror heater does not operate
(indicator light OFF)1. MIR HTR fuse -
2. Hazard warning signal switch assembly (Defogger switch)MI-42
3. Outer rear view mirror assembly -
4. Wire harness -
B066134E11
B063720E01