2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1609 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual LOW SW V VVV
HIGH SW V VVV
MIN O2S V VVV
MAX O2S V VVV
TIME $81 VVV V0.400 V
0.550 V
0.100 V
0.900 V
17
A21191
TEST DATA Screen
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-23
213 Author: Date:
2005 HIGHLAND

Page 1610 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G30835
Center J/B ECM
ODMS T16
Transmission Control SW and
Transmission Shift Main SW
16
E5
IF3 W-B GR2
L
2 6 W-B 8 13
3F3H
IB
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U14

Page 1611 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G23398
Wire Harness Side:
(Connector Front View)
T16
G28380
Switch Side:
(Connector Front View):
T16
G25190
ODMS
E7E8E9E6E5
05-982- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U1

Page 1612 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05ETG-02
05-1536
- DIAGNOSTICSLIGHTING SYSTEM
1726 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OPERATION CHECK
1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK
(a) Illuminated entry system co

05ETG-02
05-1536
- DIAGNOSTICSLIGHTING SYSTEM
1726 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OPERATION CHECK
1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK
(a) Illuminated entry system controls the following lamps:
Ignition key cylinder lamp
Interior lamp (Room lamp assy No.1)
Personal lamp (Overhead J/B)
(b) Check that the lamps come on after:
(1) Unlocking any door that was closed and locked with the ignition switch off.
(c) Check that the lamps fade out after:
(1) Leaving the doors unlocked for 15 seconds
(2) Turning the ignition switch to the ACC or ON position
(3) Locking all the doors
(d) Check that the lamps stay ON for at least 15 seconds after opening any of the doors, then fade out
again after 15 seconds.
(e) Check that the lamps fade out after:
(1) Leaving the doors unlocked for 15 seconds
(2) Locking all the doors
(f) Check that the lamps stay ON for at least 15 seconds after opening any of the doors, then fade out
again in 15 seconds after closing all the doors.
(g) Check that the lamps come on when opening any of the doors or turning the ignition switch off from
the ACC or ON position.
2. LIGHT AUTO TURN OFF OPERATION CHECK
(a) Turn the ignition switch to the ON position, and switch the headlamps into the TAIL or HEAD position.
(b) Turn the ignition switch off and open the driver's door, and check that the headlamps go off immediate-
ly.
(c) Turn the ignition switch to the ON position, and switch the headlamps into the AUTO position.
(d) Turn the ignition switch off and open the driver's door when operating the automatic light control sys-
tem, and check that the headlamps go off immediately.
3. AUTOMATIC LIGHT CONTROL OPERATION CHECK
HINT:
Perform the operation check at a location with bright surroundings.
(a) Turn the ignition switch to the ON position.
(b) Turn the headlamp dimmer switch to the AUTO position.
(c) Cover the automatic light control sensor and check that the taillamp and headlamp in order.
(d) Uncover the automatic light control sensor and check that the headlamp and taillamp go off in order.
4. DAYTIME RUNNING LIGHT OPERATION CHECK
(a) Check that the high beams come on when the headlamp switch is off with the engine running and park-
ing brake released.
(b) Check that the high beams go off when turning the headlamp dimmer switch into the TAIL or HEAD
(LOW) position under the condition as shown in (a).
(c) Check that the high beams go off when turning the ignition switch off under the condition as shown
in (a).

Page 1613 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A82390
Fast SensorSlow Sensor Locus Length
A/F Output (V)
Fuel Trim
05-302
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
492 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P2A00 A/F SENSOR CIRCUIT S

Page 1614 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-303
493 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCsP2A00: A/F sensor slow response
Required sensors / components (Main)A

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-303
493 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCsP2A00: A/F sensor slow response
Required sensors / components (Main)A/F sensor
Required sensors / components (Related)Vehicle speed sensor (VSS) and crankshaft position (CKP) sensor
Frequency of operationOnce per driving cycle
Duration60 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
Engine conditionRunning
Time after engine start120 sec. or more
Fuel system statusClosed Loop
A/F sensor statusActivated
IdleOFF
Time after idle OFF2 sec. or more
Engine RPM1,400 to 3,200 rpm
Vehicle speed60 to 120 km/h (37.5 to 75 mph)
Fuel cutOFF
Time after fuel cut is OFF2 sec. or more
Driving for 20 sec. or more40 km/h (25 mph) or more and 900 rpm or more
TYPICAL MALFUNCTION THRESHOLDS
Response rate deterioration level8 or more
MONITOR RESULT
Refer to page 05-24 for detailed information.
The test value and test limit information are described as shown in the following table. Check the monitor
result and test values after performing the monitor drive pattern (see page 05-26).
TID (Test Identification Data) is assigned to each emissions-related component.
TLT (Test Limit Type):
If TLT is 0, the component is malfunctioning when the test value is higher than the test limit.
If TLT is 1, the component is malfunctioning when the test value is lower than the test limit.
CID (Component Identification Data) is assigned to each test value.
Unit Conversion is used to calculate the test value indicated on generic OBD ll scan tools.
TID $06: A/F sensor
TLTCIDUnit ConversionDescription of Test DataDescription of Test Limit
0$01Multiply by 0.000244
(no dimension)Parameter for identify A/F sensor response
rateMalfunction threshold for A/F sensor deteri-
oration
WIRING DIAGRAM
Refer to DTC P2195 on page 05-269.
INSPECTION PROCEDURE
HINT:
Hand-held tester only:
The malfunctioning area can be found by the ACTIVE TEST A/F CONTROL operation. The A/F CONTROL
operation can determine if the A/F sensor, heated oxygen sensor or other suspected trouble areas are mal-
functioning or not.

Page 1615 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual +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)Ma

+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) 05-304
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
494 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(a) Perform the ACTIVE TEST A/F CONTROL operation.
HINT:
The A/F CONTROL operation lowers the injection volume by 12.5% or increases the injection volume by
25%.
(1) Connect the hand-held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine at 2,500 rpm for approximately 90 seconds.
(4) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL.
(5) Perform the A/F CONTROL operation with the engine idling (press the right or left button).
Result:
A/F sensor reacts in accordance with increase and decrease of injection volume:
+25 % " RICH output: Less than 3.0 V
-12.5 % " LEAN output: More than 3.35 V
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume:
+25 % " RICH output: More than 0.55 V
-12.5 % " LEAN output: Less than 0.4 V
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 A/F CONTROL procedure enables a technician to check and graph the voltage outputs of both
the A/F sensor and the heated oxygen sensor.

Page 1616 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-305
495 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
For displaying the graph, enter ºACTIVE TEST / A/F CONTROL / USER DATAº, select ºAFS B1S1 and O

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-305
495 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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.
HINT:
DTC P2A00 may be also detected, when the air fuel ratio is stuck rich or lean.
A low A/F sensor voltage could be caused by a RICH air-fuel mixture. Check for conditions that would
cause the engine to run with a RICH air-fuel mixture.
A high A/F sensor voltage could be caused by a LEAN air-fuel mixture. Check for conditions that would
cause the engine to run with a LEAN air-fuel mixture.
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.
1 CHECK OTHER DTC OUTPUT (IN ADDITION TO A/F SENSOR DTC)
(a) Read the DTC using the hand-held tester or the OBD II scan tool.
Result:
DisplayProceed to
Only P2A00 is outputA
P2A00 and other codes is outputB
HINT:
If any other codes besides P2A00 is output, perform the troubleshoot on that DTC before.
B GO TO RELEVANT DTC CHART
(See page 05-48)
A
2 READ VALUE OF OBD II SCAN TOOL OR HAND-HELD TESTER (OUTPUT VOLT-
AGE OF A/F SENSOR)
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Warm up the A/F sensor (bank 1 sensor 1) by running the engine at 2,500 rpm for approximately 90
seconds.
(c) Read the A/F sensor voltage output on the the hand-held tester or OBD II scan tool.
(d) Hand-held tester only:
On the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / SNAPSHOT
/ MANUAL SNAPSHOT / USER DATA. Read the values.
(e) Select ºAFS B1 S1
/ ENGINE SPDº and press YES.
(f) Monitor the A/F sensor voltage carefully.
(g) Check the A/F sensor voltage output under the following conditions:
(1) Allow the engine to idle for 30 seconds.
(2) Run the engine at approximately 2,500 rpm. Do not suddenly change the rpm.
(3) Raise the engine speed to 4,000 rpm and quickly release the accelerator pedal so that the throttle
is fully closed.

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