display TOYOTA HIGHLANDER 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
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- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
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335 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
21 READ OUTPUT DTC (DTC P0171, P0172 ARE OUTPUT AGAIN)
(a) Read the DTC using the hand-held tester or the OBD II scan tool.
Result:
Display (DTC Output)Proceed to
DTC P0171, P0172 are not output againA
DTC P0171, P0172 are output againB
B REPLACE ECM (See page 10-9) AND PERFORM
CONFIRMATION DRIVING PATTERN
(Refer to step 14)
A
22 CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST
NO CHECK FOR INTERMITTENT PROBLEMS
(See page 05-9)
YES
DTC IS CAUSED SHORTAGE OF FUEL (DTCS P0171, P0172)
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CONFIRMATION DRIVING PATTERN
(a) Connect the hand-held tester to the DLC3.
(b) Record the DTCs, freeze frame data and misfire counter data.
(c) Set the hand-held tester to check mode (see page 05-40).
(d) Read the value on the misfire counter for each cylinder when idling. If the value is displayed on the
misfire counter, skip the following procedure of confirmation driving.
(e) Drive the vehicle several times with the engine speed, load and its surrounding range shown with EN-
GINE SPD, CALC LOAD in the freeze frame data or MISFIRE RPM, MISFIRE LOAD in the DATA LIST.
If you have no hand-held tester, turn the ignition switch OFF after the symptom is simulated once. Then re-
peat the simulation process again.
HINT:
In order to memorize the misfire DTC, it is necessary to drive with MISFIRE RPM, MISFIRE LOAD in the
DATA LIST for the period of time in the chart below. Take care not to turn the ignition switch OFF. Turning
the ignition switch OFF switches the diagnosis system from check mode to normal mode and all DTCs,
freeze frame data and other data are erased.
Engine SpeedTime
Idling3 minutes 30 seconds or more
1,000 rpm3 minutes or more
2,000 rpm1 minute 30 seconds or more
3,000 rpm1 minute or more
(f) Check if there is misfire or not by monitoring, DTC and the freeze frame data. Record the DTCs, freeze
frame data and misfire counter data.
(g) Turn the ignition switch OFF and wait for at least 5 seconds.
INSPECTION PROCEDURE
HINT:
If DTCs besides misfire DTCs are memorized simultaneously, troubleshoot the non-misfire DTCs first.
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can
help determine if the vehicle was running or stopped, 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.
If the misfire does not occur when the vehicle is brought to the workshop, the misfire can be confirmed
by reproducing the condition of the freeze frame data. Also, after finishing the repair, confirm that there
is no misfire (see confirmation driving pattern).
On 6 and 8 cylinder engines, cylinder specific misfire fault codes are disabled at high engine speeds.
If the misfire starts in a high engine speed area or the misfire occurs only in a high engine speed area,
only the general fault code P0300 will be stored.
When only a general misfire fault code like P0300 is stored:
(1) Erase the general misfire fault code from the ECM using the hand-held tester or OBD II scan
tool.
(2) Start the engine and drive the confirmation pattern.
(3) Read the value of the misfire ratio for each cylinder. Or read the DTC.
(4) Perform repairs on the cylinder that has a high misfire ratio. Or repair the cylinder indicated by
the DTC.
(5) After finishing repairs, drive the confirmation pattern again and confirm that no misfire occurs.
When either of SHORT FT #1, LONG FT #1 in the freeze frame data is over the range of ±20 %, there
is a possibility that the air-fuel ratio is becoming to RICH (-20 % or less) or LEAN (+20 % or more).
When COOLANT TEMP in the freeze frame data is less than 80°C (176°F), there is a possibility of
misfire only during engine warm-up.
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If the misfire cannot be reproduced, the following reasons may apply: 1) the vehicle has low fuel, 2)
improper fuel is being used, and 3) the ignition plug is contaminated.
Be sure to check the value on the misfire counter after the repair.
1 CHECK OTHER DTC OUTPUT (IN ADDITION TO MISFIRE DTCS)
(a) Read the DTC using the hand-held tester to the OBD II scan tool.
Result:
Display (DTC Output)Proceed to
Only P0300, P0301, P0302, P0303, P0304 are outputA
P0300, P0301, P0302, P0303, P0304 and other DTCs are outputB
HINT:
If any other codes besides P0300, P0301, P0302, P0303, P0304 are output, perform the troubleshooting
for those codes first.
B GO TO RELEVANT DTC CHART
(See page 05-48)
A
2 CHECK WIRE HARNESS, CONNECTOR AND VACUUM HOSE IN ENGINE ROOM
(a) Check the connection conditions of the wire harness and connector.
(b) Check for the disconnection, piping and break of the vacuum hose.
OK: Connected correctly and no damage on wire harness.
NG REPAIR OR REPLACE, THEN CONFIRM THAT
THERE IS NO MISFIRE
OK
3 CHECK CONNECTION OF PCV HOSE
OK: PCV hose is connected correctly and PCV hose has no damage.
NG REPAIR OR REPLACE PCV HOSE
OK
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INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, 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 READ OUTPUT DTC
(a) Clear the DTC (see page 05-38).
(b) Warm up the engine.
(c) Run the engine at 3,000 rpm for 10 seconds or more.
(d) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(e) Turn ON the ignition switch. Push the hand-held tester or the OBD II scan tool main switch ON.
(f) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(g) Read the DTC.
Result:
Display (DTC output)Proceed to
Only P0325 is output againA
P0325, P0327 and/or P0328 are output againB
P0325, P0327 and/or P0328 are not output againC
B Go to step 3
C CHECK FOR INTERMITTENT PROBLEMS
(See page 05-9)
A
2 INSPECT KNOCK SENSOR
(a) Check the knock sensor installation.
OK: Torque is 20 NVm (204 kgfVcm, 15 ftVlbf)
NG TIGHTEN SENSOR
OK
REPLACE KNOCK SENSOR
Page 1748 of 2572
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DTC P0351 IGNITION COIL ºAº PRIMARY/SECONDARY
CIRCUIT
DTC P0352 IGNITION COIL ºBº PRIMARY/SECONDARY
CIRCUIT
DTC P0353 IGNITION COIL ºCº PRIMARY/SECONDARY
CIRCUIT
DTC P0354 IGNITION COIL ºDº PRIMARY/SECONDARY
CIRCUIT
HINT:
These DTCs indicate a malfunction related to primary circuit.
If DTC P0351 is displayed, check No. 1 ignition coil with igniter circuit.
If DTC P0352 is displayed, check No. 2 ignition coil with igniter circuit.
If DTC P0353 is displayed, check No. 3 ignition coil with igniter circuit.
If DTC P0354 is displayed, check No. 4 ignition coil with igniter circuit.
CIRCUIT DESCRIPTION
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1-cylinder ignition system which ignites one cylinder with one ignition coil. In the 1-cylinder
ignition system, one spark plug is connected to the end of the secondary winding. High-voltage is generated
in the secondary winding and is applied directly to the spark plug. The spark of the spark plug passes from
the center electrode to the ground electrode.
The ECM determines the ignition timing and outputs the ignition signals (IGTs) for each cylinder. Using the
IGT, the ECM turns on and off the power transistor inside the igniter, which switches on and off current to
the primary coil. When current to the primary coil is cut off, high-voltage is generated in the secondary coil
and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts the cur-
rent to the primary coil, the igniter sends back the ignition confirmation signal (IGF) for each cylinder ignition
to the ECM.
05EVG-05
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1 CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0420)
(a) Read the DTC using the hand-held tester or the OBD II scan tool.
Result:
Display (DTC Output)Proceed to
Only P0420 is outputA
P0420 and other DTCs are outputB
HINT:
If any other codes besides P0420 are output, perform the troubleshooting for those codes first.
B GO TO RELEVANT DTC CHART
(See page 05-48)
A
2 CHECK FOR EXHAUST GAS LEAKAGE
NG REPAIR OR REPLACE EXHAUST GAS
LEAKAGE POINT
OK
3 INSPECT AIR FUEL RATIO SENSOR (BANK 1 SENSOR 1) (See page 12-6)
NG REPLACE AIR FUEL RATIO SENSOR
OK
4 INSPECT HEATED OXYGEN SENSOR (See page 05-1 18)
OK: During air-fuel ratio feedback, the O2S's output alternates between rich and lean.
NG REPLACE HEATED OXYGEN SENSOR
OK
REPLACE EXHAUST MANIFOLD AND FRONT EXHAUST PIPE
Page 1763 of 2572
+25 %
-12.5 %
More than 3.35 V
Less than 3.0 V
Case 1
Case 2
Case 3
Case 4
Output voltage of A/F sensor
(sensor 1)
Injection volume
Output voltage
Output voltage of heated oxygen
sensor (sensor 2)Main suspect
trouble area
OK
+25 %
-12.5 %
More than 3.35 V
Less than 3.0V
Injection volume
Output voltage
+25 %
-12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
A/F sensor
(A/F sensor, heater, A/F sen-
sor circuit)
+25 %
-12.5 %
More than 0.55 V
Less than 0.4V
Injection volume
Output voltage
+25 %
-12.5 %
Injection volume
Output voltage
NG
+25 %
-12.5 %
Injection volume
Output voltage
NG
+25 %
-12.5 %
Injection volume
Output voltage
NG
+25 %
-12.5 %
Injection volume
Output voltage
NGExtremely rich or lean actual
air-fuel ratio
(Injector, fuel pressure, gas
leakage in exhaust system,
etc.) OK
OK
OK
Almost
No reaction
Almost
No reaction
Almost
No reaction Almost
No reaction
'
Heated oxygen sensor
(heated oxygen sensor,
heater, heated oxygen sensor
circuit)
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
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NOTICE:
The A/F sensor output has a few seconds of delay and the heated oxygen sensor output has about
20 seconds of delay at maximum.
The following of A/F CONTROL procedure enables a technician to check and graph the voltage outputs of
both the heated oxygen sensors.
For displaying the graph, enter ºACTIVE TEST / A/F CONTROL / USER DATAº, select ºAFS B1S1 and O2S
B1S2º by pressing ºYESº and push ºENTERº. Then press ºF4º.
Page 1784 of 2572
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INSPECTION PROCEDURE
NOTICE:
When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condi-
tion. For example, do not tighten the fuel tank cap.
Do not disassemble the pump module.
A hand-held tester is required to conduct the following diagnostic troubleshooting procedure.
1 CONFIRM DTC AND EVAP PRESSURE
(a) Connect a hand-held tester to the DLC3.
(b) Turn the ignition switch to ON (do not start the engine).
(c) Turn the tester ON.
(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read DTCs.
(f) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / VAPOR
PRESS.
(g) Read the EVAP (Evaporative Emission) pressure displayed on the tester.
Result:
Display (DTC Output)Test ResultsSuspected Trouble AreasProceed To
P0451'Pressure sensorC
P0452Less than 45 kpa (430 mmHg)
Wire harness/connector (ECM - pressure
sensor)
Pressure sensor
Short in ECM circuit
A
P0453More than 120 kPa (900 mmHg)
Wire harness/connector (ECM - pressure
sensor)
Pressure sensor
Open in ECM circuit
B
B Go to step 4
C Go to EVAP INSPECTION PROCEDURE
(See page 05-317)
A
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5 REPLACE PUMP MODULE
(a) Remove the exhaust tail pipe.
(b) Remove the heat insulator under the canister.
(c) Disconnect the hoses and the connector.
(d) Remove the 3 bolts and the pump module with the O-
ring.
(e) Install a new pump module with a new O-ring.
(f) Install the 3 bolts.
(g) Connect the hoses and the connector.
(h) Go to the next step before installing the exhaust tail pipe.
NEXT Go to step 8
6 REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
HINT:
If the exhaust tail pipe has been removed, go to the next step before reinstalling it.
NEXT Go to step 8
7 REPLACE ECM (see page 10-9)
NEXT Go to step 8
8 CONFIRM DTC (AFTER REPAIR)
(a) Connect the hand-held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the tester ON.
(c) Wait for at least 60 seconds.
(d) On the tester, select the following menu items: DIAGNOSIS /ENHANCED OBD II /DTC INFO /PEND-
ING CODES.
HINT:
If no pending DTC is displayed on the tester, the repair has been successfully completed.
NEXT
COMPLETED
Page 1801 of 2572
A67446
A62954A85537
4.5
to 5.5 V
0 V
Turn Wheel SPD (+) E1 (-)
E9
ECM
E6
ECM
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2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, 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 CHECK OPERATION OF SPEEDOMETER
(a) Drive the vehicle and check if operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG CHECK SPEEDOMETER CIRCUIT
(See page 05-1885)
OK
2 INSPECT ECM (SPD VOLTAGE)
(a) Shift the lever to the neutral position.
(b) Jack up the vehicle.
(c) Turn the ignition switch ON.
(d) Measure the voltage of the ECM connectors as the wheel
is turned slowly.
Standard:
Tester ConnectionSpecified Condition
E6-17 (SPD) - E9-1 (E1)Generated intermittently
HINT:
The output voltage should fluctuate up and down similarly to the
diagram on the left when the wheel is turned slowly.
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE ECM (See page 10-9)