check engine light TOYOTA HIGHLANDER 2001 Service Service Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 2199 of 2572
010QN-01
D32092
INCORRECT
INCORRECT
CORRECT
D25087
Looseness of Crimping
Core Wire
Terminal
Deformation
Pull Lightly 01-36
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
36 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) RESISTANCE MEASURING CONDITION OF ELECTRONIC PARTS
(1) Unless stated, all resistance is measured at an ambient temperature of 20C (68F). Resis-
tances measured may be outside the specifications if measured at high temperatures, i.e. im-
mediately after the vehicle has been running. Measurements should be made after the engine
has cooled down.
(b) HANDLING CONNECTORS
(1) When disconnecting a connector, first squeeze the
mating halves tightly together to release the lock,
then press the lock claw and separate the connec-
tor.
(2) When disconnecting a connector, do not pull on the
harnesses. Grasp the connector directly and sepa-
rate it.
(3) Before connecting the connector, check that there
are no deformed, damaged, loose or missing termi-
nals.
(4) When connecting a connector, press firmly until you
hear the lock close with a ºclickº sound.
(5) If checking the connector with a TOYOTA electrical
tester, check it from the backside (harness side) of
the connector using a mini test lead.
NOTICE:
As a waterproof connector cannot be checked from
the backside, check by connecting a sub-harness.
Do not damage the terminals by moving the inserted
tester needle.
(c) CHECKING CONNECTORS
(1) Checking when the connector is connected:
Squeeze the connector together to confirm that it is
fully inserted and locked.
(2) Checking when the connector is disconnected:
Check by pulling the wire harness lightly from the
backside of the connector. Look for unlatched termi-
nals, missing terminals, loose crimps or broken con-
ductor wires.
Check visually for corrosion, metallic or foreign ob-
jects and water; and bent, rusted, overheated, con-
taminated, and deformed terminals.
NOTICE:
When testing a gold-plated female terminal, always use a
gold-plated male terminal.
Page 2205 of 2572
010QL-02
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01-25
25 Author: Date:
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
A large number of ECU controlled systems are used in the HIGHLANDER. In general, ECU controlled sys-
tems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. How-
ever, most problem checking procedures only involve inspecting the ECU controlled system's circuits one
by one. An adequate understanding of the system and a basic knowledge of electricity is enough to perform
effective troubleshooting, accurate diagnoses and necessary repairs. Detailed information and trouble-
shooting procedures on major ECU controlled systems in this vehicle are outlined below:
SystemSee Page
1. SFI System (2AZ-FE)05-1
2. SFI System (3MZ-FE)05-362
3. Tire Pressure Warning System05-729
4. ABS with EBD & BA & TRAC & VSC System05-761
5. Electronic Controlled Automatic Transaxle [ECT] (U241E/U140F)05-876
6. Electronic Controlled Automatic Transaxle [ECT] (U151E/U151F)05-986
7. Air Conditioning System05-1 114
8. Supplement Restraint System05-1 194
9. Lighting System05-1526
10. Audio System05-161 1
11. Rear Seat Entertaiment System05-1690
12. Navigation System05-1749
13. Combination Meter05-1868
14. Power Window Control System05-1901
15. Power Door Lock Control System05-1934
16. Wireless Door Lock Control System05-1960
17. Sliding Roof System05-1974
18. Engine Immobiliser System05-1985
19. Theft Deterrent System05-2012
20. Multiplex Communication System05-2040
21. CAN Communication System05-2090
22. Cruise Control System05-2136
FOR USING OBD II SCAN TOOL OR HAND-HELD TESTER
Before using the scan tool or tester, the scan tool's instruction book or tester's operator manual should
be read thoroughly.
If the scan tool or tester cannot communicate with the ECU controlled systems when you have con-
nected the cable of the tester to the DLC3 with the ignition switch and tester turned ON, there is a prob-
lem on the vehicle side or tester side.
(1) If communication is normal when the tester is connected to another vehicle, inspect the diagnosis
data link line (Busline) or ECU power circuit of the vehicle.
(2) If communication is still impossible when the tester is connected to another vehicle, the problem
is probably in the tester itself. So perform the Self Test procedures outlined in the Tester Opera-
tor 's Manual.
Page 2225 of 2572
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.
Page 2226 of 2572
D01563
D25081
Spring Type Clamp
Clamp Track
D20025
01-16
- INTRODUCTIONREPAIR INSTRUCTION
16 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3. REMOVAL AND INSTALLATION OF FUEL CONTROL PARTS
(a) PLACE FOR REMOVING AND INSTALLING OF FUEL SYSTEM PARTS
(1) Work in a place with good air ventilation and without any ignition sources, such as a welder, grind-
er, drill, electric motor or stove.
(2) Never work in a place such as a pit or near a pit because vaporized fuel will collect in those places.
(b) REMOVING AND INSTALLING OF FUEL SYSTEM PARTS
(1) Prepare a fire extinguisher before starting operation.
(2) To prevent static electricity, install a ground on the fuel changer, vehicle and fuel tank, and do
not spray the area with water. The work surface will become slippery. Do not clean up spills with
water as this will spread and gasoline and create a fire hazard.
(3) Never use any electric equipment like an electric motor or a working light, as they may create
sparks or high temperatures.
(4) Never use an iron hammer, as it may create sparks.
(5) Dispose of fuel-contaminated shop rags separately using a fire resistant container.
4. REMOVAL AND INSTALLATION OF ENGINE INTAKE
PARTS
(a) If any metal particle enters the inlet pass, this may dam-
age the engine.
(b) When removing and installing the inlet system parts, cov-
er the openings of the removed parts and engine open-
ings. Use clean shop rags, gummed tape, or other suit-
able materials.
(c) When installing the inlet system parts, check that no metal
particles have entered the engine or the installed part.
5. HANDLING OF HOSE CLAMPS
(a) Before removing the hose, check the clamp position so
that you can restore it in the same way.
(b) Replace deformed or dented clamps with new ones.
(c) When reusing a hose, attach the clamp on the clamp track
portion of the hose.
(d) For a spring type clamp, to spread the tabs slightly after
installation by pushing in the direction of the arrow marks
as shown in the illustration.
6. FOR VEHICLES EQUIPPED WITH MOBILE COMMU-
NICATION SYSTEMS
(a) Install the antenna as far away from the ECU and sensors
of the vehicle electronic systems as possible.
(b) Install an antenna feeder at least 20 cm (7.87 in.) away
from the ECU and sensors of the vehicle electronic sys-
tems. For details of the ECU and sensors locations, refer
to the section on applicable components.
(c) Keep the antenna and feeder separate from other wirings
as much as possible. This will prevent signals from the
communication equipment from affecting vehicle equip-
ment and vice-versa.
(d) Check that the antenna and feeder are correctly adjusted.
(e) Do not install any high-powered mobile communication
system.
Page 2239 of 2572
B71602
Vibrate Slightly
Shake Slightly
Vibrate
Slightly
D25084
Malfunction
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01-31
31 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SYMPTOM SIMULATION
HINT:
The most difficult case in troubleshooting is when no problem symptoms occur. In such cases, a thorough
customer problem analysis must be carried out. A simulation of the same or similar conditions and environ-
ment in which the problem occurred in the customer's vehicle should be carried out. No matter how much
skill or experience a technician has, troubleshooting without confirming the problem symptoms will lead to
important repairs being overlooked and mistakes or delays.
For example:
With a problem that only occurs when the engine is cold or occurs as a result of vibration caused by the road
during driving, the problem can never be determined if the symptoms are being checked on a stationary ve-
hicle or a vehicle with a warmed-up engine.
Vibration, heat or water penetration (moisture) is difficult to reproduce. The symptom simulation tests below
are effective substitutes for the conditions and can be applied on a stationary vehicle.
Important points in the symptom simulation test:
In the symptom simulation test, the problem symptoms as well as the problem area or parts must be con-
firmed. First, narrow down the possible problem circuits according to the symptoms. Then, connect the tester
and carry out the symptom simulation test, judging whether the circuit being tested is defective or normal.
Also, confirm the problem symptoms at the same time. Refer to the problem symptoms table for each system
to narrow down the possible causes.
1. VIBRATION METHOD: When vibration seems to be
the major cause.
(a) PART AND SENSOR
(1) Apply slight vibration with a finger to the part of the
sensor considered to be the cause of the problem
and check whether or not the malfunction occurs.
HINT:
Applying strong vibration to relays may open relays.
(b) CONNECTORS
(1) Slightly shake the connector vertically and horizon-
tally.
(c) WIRE HARNESS
(1) Slightly shake the wire harness vertically and hori-
zontally.
The connector joint and fulcrum of the vibration are
the major areas that should be checked thoroughly.
2. HEAT METHOD: If the problem seems to occur when
the area in question is heated.
(a) Heat the component that is the possible cause of the mal-
function with a hair dryer or similar device. Check if the
malfunction occurs.
NOTICE:
Do not heat to more than 60C (140F). Exceeding this
temperature may damage components.
Do not apply heat directly to the parts in the ECU.
Page 2240 of 2572
D25085
B02389
ON 01-32
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
32 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3. WATER SPRINKLING METHOD: When the malfunc-
tion seems to occur on a rainy day or in highhumidity.
(a) Sprinkle water onto the vehicle and check if the malfunc-
tion occurs.
NOTICE:
Never sprinkle water directly into the engine compart-
ment. Indirectly change the temperature and humid-
ity by applying water spray onto the front of the radia-
tor.
Never apply water directly onto electronic compo-
nents.
HINT:
If the vehicle has or had a water leakage problem, the leakage
may have damaged the ECU or connections. Look for evidence
of corrosion or shorts. Proceed with caution during water tests.
4. HIGH ELECTRICAL LOAD METHOD: When a malfunc-
tion seems to occur when electrical load is exces-
sive.
(a) Turn on all the electrical loads including the heater blower,
headlights, rear window defogger, etc., and check if the
malfunction occurs.
Page 2366 of 2572
F02135
Start Position
End PositionWithin ± 5°
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-773
963 Author: Date:
If master cylinder pressure sensor check can not be com-
pleted, do not depress the brake pedal frequently. It may
further reduce negative pressure and make the sensor
check difficult to complete.
If the negative pressure is insufficient, master cylinder
pressure sensor check may not be completed. In this
case, idle the engine to get enough negative pressure.
If the brake pedal is depressed while engine is stopped,
negative pressure may become insufficient and the BRL
may come on. (It runs the motor and performs incorrect
control.)
(c) Check the yaw rate sensor:
(1) Shift the shift lever to the D position and drive the
vehicle at a speed of approx. 3 mph (5 km/h), turn
the steering wheel either to the left or right 90° or
more, and maintain a 180° circular drive for the ve-
hicle.
(2) Stop the vehicle and shift the shift lever to the P
position, and check that the skid control buzzer
sounds for 3 sec.
NOTICE:
Deceleration sensor check should be completed before
performing speed sensor check.
HINT:
If the skid control buzzer sounds, the sensor check is
completed normally.
If the skid control buzzer does not sound, check the skid
control buzzer circuit (See page 05-866), then perform
the sensor check again. If the skid control buzzer still does
not sound, there is a malfunction in the VSC sensor, so
check for DTCs.
Drive the vehicle in a 180° circle. At the end of the turn,
ensure that the vehicle is exactly 180° within a tolerance
of ± 5°, and facing the other direction from its original
start position.
Do not spin the wheels.
(d) Check the speed sensor signal:
(1) Drive the vehicle straight forward at speed of 28
mph (45 km/h) or higher for several seconds and
check that the ABS warning light goes off.
HINT:
The sensor check may not be completed if the vehicle has its
wheels spun or its steering wheel turned during this check.
(2) Stop the vehicle.
NOTICE:
Before performing speed sensor check, complete
master cylinder pressure sensor and deceleration
sensor checks.
Page 2369 of 2572
F02135
Start Position
End PositionWithin ± 5° 05-776
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
966 Author: Date:
(c) Check the yaw rate:
(1) Shift the shift lever to the D position and drive the
vehicle at a speed of approx. 3 mph (5 km/h), and
maintain a 180° circular drive for the vehicle.
(2) Stop the vehicle and shift the shift lever to the P
position, and check that the skid control buzzer
sounds for 3 seconds.
HINT:
If the skid control buzzer sounds, the sensor check is
completed normally.
If the skid control buzzer does not sound, check the skid
control buzzer circuit (See page 05-866), then perform
the sensor check again. If the skid control buzzer still does
not sound, there is a malfunction in the VSC sensor, so
check for DTC.
Drive the vehicle in a 180° circle. At the end of the turn,
ensure that the vehicle is exactly 180° within a tolerance
of ± 5°, and facing the other direction from its original
start position.
Do not spin the wheels.
(d) Check the speed sensor:
(1) Drive the vehicle straight forward at the speed of 28
mph (45 km/h) or higher for several seconds and
check that the ABS warning light goes off.
HINT:
The sensor check may not be completed if the vehicle has its
wheels spun or its steering wheel turned during this check.
(2) Stop the vehicle.
(e) Read the DTC following the tester screen.
HINT:
Refer to the hand-held tester operator's manual for fur-
ther details.
If the check result is OK, the ABS warning light link goes
off when the brake pedal is once depressed.
9. IF NECESSARY, PERFORM ZERO POINT CALIBRA-
TION OF YAW RATE SENSOR AND/OR BRAKE AC-
TUATOR ASSY (USING SST CHECK WIRE)
NOTICE:
While obtaining the zero point, do not tilt, move or
shake the vehicle but keep it in a stationary condition.
(Do not start the engine.)
Be sure to perform the operation on a level surface
(within an inclination of 1 %).
(a) Check that the steering wheel is in the straight-ahead
position and shift the shift lever to the P position.
(b) Clear the zero point calibration:
HINT:
When replacing the yaw rate sensor only (not replace the brake
actuator assy).
(1) Turn the ignition switch to the ON position.
Page 2370 of 2572
C52361
DLC3
Ts
CG
F46259
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-777
967 Author: Date:
(2) Using SST, connect and disconnect terminals Ts
and CG of the DLC3 4 times or more within 8 se-
conds.
SST 09843-18040
(3) Remove the SST from the terminals of the DLC3.
(c) Obtain the zero point calibration:
(1) Turn the ignition switch off.
(2) Using SST, connect terminals Ts and CG of the
DLC3.
SST 09843-18040
(3) Turn the ignition switch to the ON position.
(4) Keep the vehicle in a stationary condition on a level
surface for 2 seconds or more.
(5) Check that the VSC warning light blinks.
HINT:
If the VSC warning light does not blink, perform the zero point
calibration again.
(d) Remove the SST from the terminals of the DLC3.
SST 09843-18040
(e) Turn the ignition switch off.
10. IF NECESSARY, PERFORM ZERO POINT CALIBRATION OF YAW RATE SENSOR AND/OR
BRAKE ACTUATOR ASSY (USING HAND-HELD TESTER)
NOTICE:
While obtaining the zero point, do not tilt, move or shake the vehicle but keep it in a stationary
condition. (Do not start the engine.)
Be sure to perform the operation on a level surface (within an inclination of 1 %).
(a) Check that the steering wheel is in the straight-ahead position and shift the shift lever to the P position.
(b) Connect the hand-held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Perform the reset memory by following the prompts on the tester screen.
HINT:
When replace the yaw rate sensor only (not replace the brake actuator assy).
[System Selection Screen]
ºDIAGNOSISº - ºOBD/MOBDº - Select the vehicle - ºABS/VSCº - ºRESET MEMORYº
(e) Perform the signal check (test mode) by following the prompts on the tester screen.
[System Selection Screen]
ºDIAGNOSISº - ºOBD/MOBDº - Select the vehicle - ºABS/VSCº - ºSIGNAL CHECKº
(f) Obtain zero point of the yaw rate sensor and deceleration sensor:
(1) Keep the vehicle in a stationary condition on a level surface for 2 seconds or more.
(2) Check that the VSC warning light blinks.
Page 2386 of 2572
7101E-06
- INSTRUMENT PANEL/METERCOMBINATION METER
71-1
3592 Author: Date:
COMBINATION METER
PROBLEM SYMPTOMS TABLE
Warning Lights:
SymptomSuspect AreaSee page
Check Engine warning light does not come on.
7. ECM
8. Wire Harness or Connector
9. Combination Meter Assy05-5
05-366
-
71-18
Discharge warning light does not come on.
1. ECM
2. Wire Harness or Connector
3. Combination Meter Assy05-5
05-366
-
71-18
Brake warning light does not come on.
1. Skid control ECU
2. Wire Harness or Connector
3. Combination Meter Assy05-761
-
71-18
ABS warning light does not come on.
1. ABS ECU
2. Wire Harness or Connector
3. Combination Meter Assy05-761
-
71-18
SRS warning light does not come on.
1. Airbag Sensor Assy Center
2. Wire Harness or Connector
3. Combination Meter Assy05-1200
-
71-18
Open Door warning light does not come on.
1. Refer to troubleshooting
2. Wire Harness or Connector
3. Combination Meter Assy05-1601
-
71-18
Fuel Level warning light does not come on.
1. Refer to troubleshooting
2. Wire Harness or Connector
3. Combination Meter Assy05-1893
-
71-18
Low Oil Pressure warning light does not come on.
1. Low Oil Pressure Warning Switch
2. Wire Harness or Connector
3. Combination Meter Assy71-3
-
71-18
Driver's seat belt warning light does not come on.
1. Refer to troubleshooting
2. Wire Harness or Connector
3. Combination Meter Assy05-1898
-
71-18
ºOIL LEVELº warning light does not come on.
1. Low Oil Level Sensor
2. Wire Harness or Connector
3. ECM
4. Combination Meter Assy05-5
05-366
-
05-5
05-366
71-18
ºTIRE AIR PRESSº warning light does not come on.
1. Wire Harness or Connector
2. Skid Control ECU
3. Combination Meter Assy-
05-761
71-18
Indicator Lights:
SymptomSuspect AreaSee page
Turn indicator light does not come on.
1. Turn Signal and Hazard Warning System
2. Wire Harness or Connector
3. Combination Meter Assy05-1533
-
71-18
High Beam indicator light does not come on.
1. Headlight Dimmer Switch
2. Wire Harness or Connector
3. Combination Meter Assy05-1533
-
71-18
Washer level indicator light does not come on.
1. Washer Level Warning Switch
2. Wire Harness or Connector
3. Combination Meter Assy-
-
71-18