2001 TOYOTA HIGHLANDER diagnostic menu

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-275
465 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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
A/F sensor circuit DTC are outputA
A/F sensor circuit DTC and other codes are outputB
HINT:
If any other codes besides A/F sensor DTC are output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART
(See page 05-48)
A
2 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (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 A/F sensor voltage output on the hand-held tester or the 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 B1S1 / 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 to 4,000 rpm and quickly release the accelerator pedal so that the throttle is
fully closed.
Standard:
Condition (1) and (2)
Voltage change of 3.3 V (0.66 V)* (between approximately 3.1 to 3.5 V) as shown in the illustra-
tion.
Condition (3)
A/F sensor voltage increases to 3.8 V (0.76 V)* or more during engine deceleration when fuel
is cut as shown in the illustration.
*: Voltage when using the OBD II scan tool.

05-284
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
474 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
P2238 (Open circuit between AF+ and AF-):
A/F sensor admittanceBelow 0.022 1/ohm
P2238 (Short circuit between AF+ and GND):
AF+ terminal voltage0.5 V or less
P2238 (Short circuit between AF+ and AF-):
Difference between AF+ terminal and AF- terminal voltages0.1 V or less
P2239 (Short circuit between AF+ and +B):
AF+ terminal voltageMore than 4.5 V
P2252 (Short circuit between AF- and GND):
AF- terminal voltage0.5 V or less
P2253 (Short circuit between AF- and +B):
AF- terminal voltageMore than 4.5 V
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.
(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

- 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.

05ITC-02
05-26
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
216 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
READINESS MONITOR DRIVE PATTERN
1. PURPOSE OF THE READINESS TESTS

The On-Board Diagnostic (OBD II) system is designed to monitor the performance of emission-re-
lated components, and report any detected abnormalities with Diagnostic Trouble Codes (DTCs).
Since various components need to be monitored during different driving conditions, the OBD II system
runs separate monitoring programs called readiness monitors.

The hand-held tester's software must be version 9.0 or newer to view the readiness monitor status.
From the ºENHANCED OBD IIº menu, select ºMONITOR STATUSº to view the readiness monitor sta-
tus.

A generic OBD II scan tool can also be used to view the readiness monitor status.

When the readiness monitor status reads ºcompleteº, the necessary conditions have been met for run-
ning performance tests for that readiness monitor.
HINT:
Many state Inspection and Maintenance (I/M) programs require a vehicle's readiness monitor status to show
ºcompleteº.

The readiness monitor will be reset to ºincompleteº if:

The ECM has lost battery power or blown a fuse.

DTCs have been cleared.

The conditions for running the readiness monitor have not been met.

If the readiness monitor status shows ºincompleteº, follow the appropriate readiness monitor drive pat-
tern to change the status to ºcompleteº.
CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when performing these drive
patterns.
NOTICE:
The following drive patterns are the fastest method of completing all the requirements necessary for
making the readiness monitor status read ºcompleteº.
If forced to momentarily stop a drive pattern due to traffic or other factors, the drive pattern can be
resumed. Upon completion of the drive pattern, in most cases, the readiness monitor status will
change to ºcompleteº.
Sudden changes in vehicle load and speed, such as driving up and down hills and/or sudden accel-
eration, hinder readiness monitor completion.

START
Confirm vehicle VIN
Preparation:
1. Connect hand-held tester to DLC3
2. Turn ignition switch to ON
3. Turn tester ON
Hand-held tester operation:
1. Select DIAGNOSIS
2. Select ENHANCED OBD ll
READ:
Menu Screen:
*********************************
[ VIN ]
*********************************
PRESS [EXIT]
ERROR
PRESS [EXIT] DTC P0630 was detected.
P0630 [VIN Not Programmed
or Mismatch - ECM/PCM]
Please input the VIN.
PRESS [EXIT] Possible cause:
To Menu Screen
17-digit VIN
displayed 3. Select VIN
DTC P0630 Set VIN Previously StoredVIN Not Stored
[EXIT] [EXIT][EXIT] 2. VIN WRITEVIN
Select VIN READ
1. VIN READ 1. VIN READ
ERROR
ECM does not respond the VIN.
1: VIN is not written yet.
2: Vehicle does not support this
function.
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-13
203 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3. READ VIN (Vehicle Identification Number)
(a) Read VIN using a hand-held tester.

START
Confirm vehicle VIN
Preparation:
1. Connect hand-held tester to DLC3
2. Turn ignition switch to ON
3. Turn tester ON
Hand-held tester operation:
Write:
Menu Screen:
This function overwrites the
following VIN with a new VIN.
*********************************
[ VIN ]
*********************************
[YES] to Continue
[NO] to EXIT
To Menu ScreenContinued on next page
NOTICE
Do you wish to continue?
[YES]
[NO] 1. Select DIAGNOSIS
2. Select ENHANCED OBD ll
3. Select VIN
1. VIN READ 1. VIN READVIN
Select VIN WRITE
[YES] or [NO]
[YES] 2. VIN WRITE
To Menu
Screen
[NO]
CONFIRMATION
This function will erase the
DTCs automatically after
writing the VIN.
Do you wish to continue?
[YES]
17-digit VIN displayed VIN Previously Stored
05-14
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
204 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4. WRITE VIN
(a) Write VIN using the hand-held tester.

Your VIN is incorrect.
Please enter the VIN again.
Input a new VIN
PRESS [ENTER] If you want to clear the VIN,
press [NO] key.
To Menu Screen
Writing Succeeded
[ENTER] Continued from previous page
WRITING COMPLETE
NOW WRITING
Input Error
INPUT ERROR
[EXIT] to RETURN
[EXIT]
WRITING FAILED
Turn IG OFF, then ON.
Please try again.
PRESS [EXIT]
[EXIT]Writing Error
SET NEW VIN
Press [RIGHT]/[LEFT] to shift
the cursor right/left.
Press [UP]/[DOWN] to
increase/decrease value.
Or, input digit with the 10 key.
PRESS [ENTER]CONFIRMATION
PRESS [ENTER] Vehicle is stopped.
New Registration
[ENTER]
[ENTER]
PRESS [ENTER]
Communication Error
[ENTER]
COMMUNICATION ERROR
PRESS [EXIT] Turn IG OFF, then ON.
VIN input method
The following VIN has been
written correctly.
The DTCs have been erased
correctly.
To Menu Screen To Menu Screen
[EXIT] Input Instructions
Engine is not running.
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-15
205 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)

05ISE-02
I39965
I38225
Completion mark (orange)
I39965
- DIAGNOSTICSNAVIGATION SYSTEM
05-1803
1993 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
SCREEN NOISE AUTOMATIC ADJUSTMENT
HINT:

This adjustment is performed to reduce noise when screen noise occurs upon replacing the multi-dis-
play, the navigation ECU or the television camera ECU.

Illustrations may differ from the actual vehicle depending on the device settings and options. There-
fore, some detailed areas may not be shown exactly the same as on the actual vehicle.

Perform both procedures below when the multi-display is replaced.
1. When either the multi-display or the navigation ECU is replaced:
(a) Turn the ignition switch to the ACC position and wait for
at least 6 seconds to activate the diagnostic mode (see
page 05-1784).
(b) Select ºNavigation Checkº from the ºDiagnosis MENUº
screen.
(c) The screen enters ºNavigation Checkº with a beeping
sound. Adjustment is completed when the completion
mark is displayed.
(d) Cancel the diagnostic mode (see page 05-1784).
2. When either the multi-display or the television camera ECU is replaced:
(a) Turn the ignition switch to the ACC position and wait for
at least 6 seconds to activate the diagnostic mode (see
page 05-1784).
(b) Select ºCamera Checkº from the ºDiagnosis MENUº
screen.