2001 TOYOTA HIGHLANDER clock

A85251
Soak Timer Circuit
Ignition Switch
IGSW
Power
ECM
EFI MAIN
MREL+B
15 ASource IC
Soak Timer ICMain Relay
Control IC
Battery 05-300
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
490 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2610 ECM/PCM INTERNAL ENGINE OFF TIMER
PERFORMANCE
DTC SUMMARY
DTCMonitoring ItemsMalfunction Detection ConditionsTrouble AreasDetection
TimingsDetection
Logic
P2610Soak timer (built into ECM)ECM internal malfunctionECMEngine
running2 trip
CIRCUIT DESCRIPTION
To ensure the accuracy of the EVAP (Evaporative Emission) monitor values, the soak timer, which is built
into the ECM, measures 5 hours (
15 minutes) from when the ignition switch is turned OFF, before the moni-
tor is run. This allows the fuel to cool down, which stabilizes the Fuel Tank Pressure (FTP). When 5 hours
have elapsed, the ECM turns on.
MONITOR DESCRIPTION
5 hours after the ignition switch is turned OFF, the soak timer activates the ECM to begin the EVAP system
monitor. While the engine is running, the ECM monitors the synchronization of the soak timer and the CPU
clock. If these two are not synchronized, the ECM interprets this as a malfunction, illuminates the MIL and
sets the DTC (2 trip detection logic).
05IRF-02

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-301
491 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OBD II MONITOR SPECIFICATIONS
Monitor Strategy
Required Sensors/ComponentsECM
Frequency of OperationOnce per driving cycle
Duration10 minutes
MIL Operation2 driving cycles
Sequence of OperationNone
Typical Enabling Conditions
The monitor will run whenever this DTC is not presentSee page 05-16
Ignition switchON
EngineRunning
Battery voltage8 V or more
StarterOFF
Typical Malfunction Thresholds
Soak timer measurement when ECM CPU clock counts 10
minutesLess than 7 minutes, or more than 13 minutes
INSPECTION PROCEDURE
HINT:

DTC P2610 is set if an internal ECM problem is detected. Diagnostic procedures are not required. ECM
replacement is required.

Read freeze frame data using a hand-held tester or OBD II scan tool. Freeze frame data record the
engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help
determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel
ratio was lean or rich, and other data, from the time the malfunction occurred.
1 REPLACE ECM (see page 10-9)
NEXT
CHECK WHETHER DTC OUTPUT RECURS
(a) Connect a hand-held tester to the DLC3.
(b) Turn the ignition switch to ON.
(c) Clear DTCs (see page 05-38).
(d) Start the engine and wait for 10 minutes or more.
(e) On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PEND-
ING CODES.
(f) If no pending DTC is displayed, the repair has been successfully completed.

B51847
Driving Axis
ClockwiseCounterclock-
wise
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1919
2109 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 INSPECT POWER WINDOW REGULATOR MOTOR ASSY LH (DRIVER SIDE)
(a) Inspect the power window regulator motor assy LH (Driver side) operation.
NOTICE:

Do not apply the battery voltage, because the pulse sensor and limit switch could be damaged
if the battery voltage is applied to terminals 2, 3 and 6 of the power window regulator motor con-
nector.

Be sure to reset the power window regulator motor (initial position setting of limit switch) when
the driver's side power window regulator motor is installed to the regulator.
(1) Check that the motor operates smoothly when the
battery positive voltage is applied to each terminal
of the connector.
Standard:
Measuring ConditionOperational Direction
Battery positive - Terminal 5
Battery negative - Terminal 4Clockwise
Battery positive - Terminal 4
Battery negative - Terminal 5Counterclockwise
(b) Inspect the PTC operation inside the power window regulator motor.
NOTICE:
The inspection should be performed with the power window regulator and door glass installed to the
vehicle.
(1) Set a DC 400 A probe of the electrical tester in the wire harness of terminal 4 or 5.
NOTICE:
Match the arrow mark of the probe with the current direction.
(2) Set the door glass in the fully closed position.
(3) When 60 seconds have elapsed after the door glass is fully closed, check now long the current
takes to charge, from approximately 16 - 34 A into 1 A or less, when the power window switch
is turned UP once again.
Standard: Approximately 4 - 90 seconds
(4) When approximately 60 seconds have elapsed after the inspection of the current cut-off, check
that the door glass goes down when the power window regulator switch is turned DOWN.
NG REPLACE POWER WINDOW REGULATOR
MOTOR ASSY LH
OK
REPAIR OR REPLACE HARNESS AND CONNECTOR

INTRODUCTIONIN-15
HANDLING PRECAUTIONS ON RELATED COMPONENTS
1. BRAKE SYSTEM
The brake system is one of the most important safety components. Always follow the directions and
notes given in brake (32) section of the repair manual for the relevant model when handling brake system
parts.
NOTICE: When repairing the brake master cylinder or TRAC system, bleed the air out of the TRAC sys-
tem.
2. DRIVE TRAIN AND CHASSIS
The drive train and chassis are components that can have great effects on the running performance and
vibration resistance of the vehicle. After installing components in the sections listed in the table below,
perform alignments to ensure correct mounting angles and dimensions. Particularly accurate repair of
the body must also be done to ensure correct alignment.
HINT: Correct procedures and special tools are required for alignment. Always follow the directions giv-
en in the repair manual for the relevant model during alignment and section DI of this section.
Component to be alignedSection of repair manual
for relevant model
Front WheelsFront Suspension (26) section
Rear WheelsRear Suspension (27) section
Propeller ShaftPropeller Shaft (30) section
3. COMPONENTS ADJACENT TO THE BODY PANELS
Various types of component parts are mounted directly on or adjacently to the body panels. Strictly ob-
serve the following precautions to prevent damaging these components and the body panels during han-
dling.

Before repairing the body panels, remove their components or apply protective covers over the com-
ponents.

Before prying components off using a screwdriver or a scraper, etc., attach protective tape to the tool
tip or blade to prevent damaging the components and the body paint.

Before removing components from the outer surface of the body, attach protective tape to the body to
ensure no damage to painted areas.
HINT: Apply touch-up paint to any damaged paint surfaces.

Before drilling or cutting sections, make sure that there are no wires, etc. on the reverse side.
4. ECU (ELECTRONIC CONTROL UNIT)
Many ECUs are mounted in this vehicle.
Take the following precautions during body repair to prevent damage to the ECUs.

Before starting electric welding operations, disconnect the negative (-) terminal cable from the bat-
tery.
When the negative (-) terminal cable is disconnected from the battery, memory of the clock and audio
systems will be cancelled. So before starting work, make a record of the contents memorized by each
memory system. Then when work is finished, reset the clock and audio systems as before.
When the vehicle has tilt and telescopic steering, power seat and outside rear view mirror, which are
all equipped with memory function, it is not possible to make a record of the memory contents.
So when the operation is finished, it will be necessary to explain this fact to the customer, and request
the customer to adjust the features and reset the memory.

Do not expose the ECUs to ambient temperatures above 80C (176F).
NOTICE: If it is possible the ambient temperature may reach 80C (176F) or more, remove the ECUs
from the vehicle before starting work.

Be careful not to drop the ECUs and not to apply physical shocks to them.

2005 HIGHLANDER (EWD592U)
8
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When
troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify
the problem ground quickly. The relationship between ground points (
EA, IB and IC shown below) can also be
checked this way.
5
5
5
5
4
44
4
4 BA15IB18EA2
ID115
IC33 IA12 E 3
W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B
W-B
W-B W-B
W-B
W-B W-B W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
BR
W-B
BR BRW-BW-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
W-B W-B
W-B
W-B
BR W-B
BR BR
BR W-B (4A-GZE)
W-B W-BI 2
I 2
B 5 I 5 I 5 I 5
B 5
B 5
B 5
I 5
I 5
I 3 I 3 E 3
E 3
E 3
E 2
E 4
E 5
E 4
E 5
E 6 E 4 E 4
B 4
EA I 4
B 4
B 4
I 4 I 8
IB IC 443E5
3E6 3G13 3F3 3D1 3B7W-B
W-B
W-B W-B W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B W-BI 6
I 6
I 2 3C7
10A A A A
A
A
Junction
Connector J 1
W-B
W-B
W-B W-B
BR W-B W-B
W-B
W-B W-B
W-B
I GROUND POINT
FAN MAIN Relay
FAN MAIN Relay
A/C Relay No.2
A/C Relay No.3
Radiator Fan Motor
Headlight Cleaner Relay
Headlight LH
Headlight RH
Front Fog Light LH
Brake Fluid Level SW Front Fog Light RH Front Turn Signal Light RH
Front Clearance Light RH
Front Turn Signal Light LH
Front Clearance Light LH
Door Lock Control SW
Door Courtesy SW RH
Door Lock Motor RH
Door Lock Control Relay
Blower Resistor
Idle-Up SW
A/C Amplifier
Radio and Player
HEATER Relay
Auto Antenna MotorA/C Control Assembly
Blower Motor
Blower SW
Parking Brake SW
Combination Meter
Combination SW
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
Defogger SW
Unlock Warning SW
Power Window Master SW
Power Window Control
Relay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
Combination Meter
Combination Meter
Fuel Sender Cigarette Lighter
O/D Main SW
Clock
Combination SW
*The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

D25080
Negative (-)
Terminal
D31751
INCORRECT
- INTRODUCTIONREPAIR INSTRUCTION
01-15
15 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(i) WIRE HARNESS AND CONNECTOR
(1) The SRS wire harness is integrated with the instrument panel wire harness assembly. All the con-
nectors in the system are a standard yellow color. If the SRS wire harness becomes discon-
nected or the connector becomes broken, repair or replace it.
2. ELECTRONIC CONTROL
(a) REMOVAL AND INSTALLATION OF BATTERY TERMI-
NAL
(1) Before performing electronic work, disconnect the
battery negative (-) terminal cable beforehand to
prevent component and wire damage caused by
accidental short circuits.
(2) When disconnecting and installing the terminal
cable, turn the ignition switch and lighting switch
OFF and loosen the terminal nut completely. Per-
form these operations without twisting or prying the
terminal. Remove the battery cable from battery
post.
(3) Clock settings, radio settings, DTCs and other data
are erased when the battery cable is removed. Be-
fore removing the battery cable, record any neces-
sary data.
(4) When disconnecting the battery's negative (-) ter-
minal cable, re-initialize the following systems after
the completion of the operation.
(b) HANDLING OF ELECTRONIC PARTS
(1) Do not open the cover or case of the ECU unless
absolutely necessary. If the IC terminals are
touched, the IC may be rendered inoperative by
static electricity.
(2) To disconnect electronic connectors, pull the con-
nector itself, not the wires.
(3) Be careful not to drop electronic components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced.
(4) When cleaning the engine with steam, protect the
electronic components, air filter and emission-re-
lated components from water.
(5) Never use an impact wrench to remove or install
temperature switches or temperature sensors.
(6) When checking the continuity at the wire connector,
insert the tester probe carefully to prevent terminals
from bending.

71-2
- INSTRUMENT PANEL/METERCOMBINATION METER
3593 Author
: Date
:
MAINT REQD indicator ia blinking or cotinuously illuminated.1. Resetting procedure
2. Combination Meter Assy71-3
71-18
All buzzer (key reminder, tail cancel, Seat belt) does not operate.1. Refer to troubleshooting
2. Combination Meter Assy05-1879
71-18
O/D OFF indicator light does not come on.
1. O/D off Select Switch
2. Wire Harness or Connector
3. Combination Meter Assy-
-
71-18
SLIP indicator light does not come on.
1. Wire Harness or Connector
2. Skid Control ECU
3. Combination Meter Assy-
05-761
71-18
VSC indicator light does not come on.
1. Wire Harness or Connector
2. Skid Control ECU
3. Combination Meter Assy-
05-761
71-18
TRC/TRAC OFF indicator light does not come on.
1. Wire Harness or Connector
2. Skid Control ECU
3. Combination Meter Assy-
05-761
71-18
A/T OIL TEMP indicator light does not come on.
1. Wire Harness or Connector
2. Automatic transmission
3. Combination Meter Assy-
05-883
05-993
71-18
ECT SNOW indicator light does not come on.
1. Wire Harness or Connector
2. ECM
3. Combination Meter Assy-
05-5
05-366
71-18
A/T shift indicator light does not come on.
1. Park Neutral Position Switch
2. Wire Harness or Connector
3. ECM
4. Combination Meter Assy05-883
05-993
-
05-5
05-366
71-18
ºCRUISEº indicator light does not come on.
1. Wire Harness or Connector
2. ECM
3. Combination Meter Assy-
05-5
05-366
71-18
Meter Gauges:
SymptomSuspect AreaSee page
Speedometer does not operate.1. Refer to troubleshooting05-1885
Tachometer does not operate.1. Refer to troubleshooting05-1889
Fuel Gauge does not operate or operates abnormally.1. Refer to troubleshooting05-1893
Water temperature does not operate.1. Refer to troubleshooting05-1896
Clock:
SymptomSuspect AreaSee page
Clock will not operate
Clock loses or gains time
1. Power source or ground
2. Integration control & panel assy05-1 170
05-1 173
05-1 175
71-6

C82983
SST
C82792C83635
SST
SA1143
Boiling Water
- TRANSFERTRANSFER ASSY (4WD)
31-21
3099 Author
: Date
:
(c) Using SST, tighten a new transfer gear nut (at a standard
torque.)
SST 09326-2001 1, 09556-16030
Torque:
277 to 378 NVm (2,820 to 3,855 kgfVcm, 204 to 279 ftVlbf)
NOTICE:
Do not stake the transfer gear nut.
HINT:
Use a torque wrench with a fulcrum length of 750 mm (29.53 in.)
50. INSPECT AND ADJUST DRIVEN PINION PRELOAD
(a) Using SST and a torque wrench, measure the initial
torque of the driven pinion.
Preload (at starting):
New bearing:
1.1 to 1.6 NVm (11 to 16 kgfVcm, 9.7 to 14.2 in.Vlbf)
Used bearing:
0.9 to 1.4 NVm (9 to 14 kgfVcm, 8.0 to 12.4 in.Vlbf)
HINT:
Use a torque wrench with a fulcrum length of 160 mm (6.30 in.)
NOTICE:
Measure preload after rotating the bearing both clockwise
and counterclockwise to make it fit.
(b) If the preload is too large, replace the transfer pinion
bearing spacer with a new one.
(c) If the preload is too small, repeatedly adjust the preload
by tightening the transfer gear nut 5 to 10 degrees at a
time until the standard value is obtained.
(d) If the preload is insufficient, even though the tightening
torque of the transfer gear nut exceeds the maximum of
the standard value, loosen the transfer gear nut and apply
gear oil SAE 90 (GL-5) to the transfer gear nut and the
screw thread and the base of the driven pinion. And then
repeat the preceding operation. If the tightening torque is
smaller than the standard, replace the transfer pinion
bearing spacer with a new one and adjust it.
SST 09326-2001 1, 09556-16030
Torque: 378 NVm (3,855 kgfVcm, 279 ftVlbf)
51. INSTALL RING GEAR
(a) Completely remove grease and moisture on the contact
surfaces of the ring gear and the transfer ring gear mount-
ing case.
(b) Heat the ring gear in boiling water from 90 to 100C (194
to 212F).
(c) Carefully take the ring gear out of the boiling water.