2001 TOYOTA HIGHLANDER diagnostic menu

Y
75743
A66104A85509
E2
ECT SensorECM
THW
E2
Wire Harness Side
E2
ECT Sensor
Y
A75742
A76903A85507
ECM
THW
E2
E7
ECM THW
E2E2
ECT Sensor
05-98
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
288 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (CHECK FOR
OPEN IN WIRE HARNESS)
(a) Disconnect the E2 ECT sensor connector.
(b) Connect terminals 1 and 2 of the E2 ECT sensor wire har-
ness side connector.
(c) Turn the ignition switch ON.
(d) On the hand-held tester or the OBD II scan tool, enter the
following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / COOLANT TEMP. Read the values.
OK:
Temperature value: 1405C (2845F) or more
OK CONFIRM GOOD CONNECTION AT SENSOR. IF
OK, REPLACE ENGINE COOLANT TEMP.
SENSOR
NG
3 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (CHECK FOR
OPEN IN ECM)
(a) Disconnect the E2 ECT sensor connector.
(b) Connect terminals THW and E2 of the E7 ECM connector.
HINT:
Before checking, do a visual and contact pressure check for the
ECM connector.
(c) Turn the ignition switch ON.
(d) On the hand-held tester or the OBD II scan tool, enter the
following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / COOLANT TEMP. Read the values.
OK:
Temperature value: 1405C (2845F) or more
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG

A75766
E2
ECT SensorECM
THW
E2
Y
A75744
A81699A85508
ECM
THW
E2
E7
ECM E2
ECT Sensor
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-99
289 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CONFIRM GOOD CONNECTION AT ECM. IF OK, REPLACE ECM (See page 10-9)
4 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (CHECK FOR
SHORT IN WIRE HARNESS)
(a) Disconnect the E2 ECT sensor connector.
(b) Turn the ignition switch ON.
(c) On the hand-held tester or the OBD II scan tool, enter the
following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / COOLANT TEMP. Read the values.
OK:
Temperature value: -405C (-405F)
OK REPLACE ENGINE COOLANT TEMPERATURE
SENSOR
NG
5 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (CHECK FOR
SHORT IN ECM)
(a) Disconnect the E7 ECM connector.
(b) Turn the ignition switch ON.
(c) On the hand-held tester or the OBD II scan tool, enter the
following menus: DIAGNOSIS / ENHANCED OBD II /
DATA LIST / ALL / COOLANT TEMP. Read the values.
OK:
Temperature value: -405C (-405F)
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG
REPLACE ECM (See page 10-9)

Y
B53781
A81699A85510
Wire Harness Side
T13
Throttle Position Sensor
VC VTA2VTA1
E2
VC
VTA1
VTA2 E2 E7
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-107
297 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Hand-held tester:
1 READ VALUE OF HAND-HELD TESTER (THROTTLE POS AND THROTTLE POS
#2)
(a) On the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST
/ ALL / THROTTLE POS and THROTTLE POS #2. Read the values.
Result:
Throttle position expressed as percentage and voltage
Accelerator pedal releasedAccelerator pedal depressedTrouble AreaProceed toTHROTTLE POS
(VTA1)THROTTLE POS #2
(VTA2)THROTTLE POS
(VTA1)THROTTLE POS #2
(VTA2)Trouble AreaProceed to
0 %0 to 0.2 V0 %0 to 0.2 VVC circuit open
100 %4.5 to 5.5 V100 %4.5 to 5.5 VE2 circuit open
0 % or 100 %2.1 to 3.1 V
(fail safe)0 % or 100 %2.1 to 3.1 V
(fail safe)VTA1 circuit open or
ground shortA
about 16 %
(fail safe)0 to 0.2 or 4.5 to 5.5 Vabout 16 %
(fail safe)0 to 0.2 or 4.5 to 5.5 VVTA2 circuit open or
ground short
10 to 24 %2.1 to 3.1 V64 to 96 %
(does not fail safe)4.5 to 5.5 V
(does not fail safe)Throttle position sen-
sor circuit is normalB
B Go to step 5
A
2 CHECK WIRE HARNESS (THROTTLE POSITION SENSOR - ECM)
(a) Disconnect the T13 throttle position sensor connector.
(b) Disconnect the E7 ECM connector.
(c) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
T13-5 (VC) - E7-18 (VC)
T13-6 (VTA1) - E7-21 (VTA1)
T13-4 (VTA2) - E7-31 (VTA2)
T13-3 (E2) - E7-28 (E2)
Below 1 W
T13-5 (VC) or E7-18 (VC) - Body ground
T13-6 (VTA1) or E7-21 (VTA1) - Body ground
T13-4 (VTA2) or E7-31 (VTA2) - Body ground
10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

A58686
Vehicle speed
60 km/h
(38 mph)
Ignition Switch OFFOnce
40 seconds
or more
Warm up
(engine coolant
temperature
is more than 75C (167F)) 10 seconds
or moreTwice
40 seconds
or more12 times
40 seconds
or more
(a), (b)(d)
(e)
Idling (c)(d)
(e)(d)
(f)
10 seconds
or more10 seconds
or more 05-124
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
314 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CONFIRMATION DRIVING PATTERN (P0136)
(a) Connect the hand-held tester to the DLC3.
(b) Switch the hand-held tester from normal mode to check (test) mode (see page 05-40).
(c) Start the engine and warm it up until the engine coolant temperature becomes more than 75C.
(d) Drive the vehicle at 60 km/h (38 mph) or more for 40 seconds or more.
(e) Let the engine idle for 10 seconds or more.
(f) Perform steps (d) to (e) 12 times.
HINT:
If a malfunction exists, the MIL will illuminate during step (f).
NOTICE:
If the conditions in this test are not strictly followed, detection of a malfunction will not occur. If you
do not have a hand-held tester, turn the ignition switch OFF after performing steps from (c) to (f), then
perform steps from (c) to (f) again.
CONFIRMATION DRIVING PATTERN (P0137)
Warm up the engine and run the engine at 60 km/h (38 mph) for 7 minutes.
CONFIRMATION DRIVING PATTERN (P0138)
Warm up the engine and run the engine at idle for 30 seconds.
INSPECTION PROCEDURE
HINT:
Hand-held tester only:
It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The
A/F CONTROL operation can determine if the A/F sensor, heated oxygen sensor or other potential trouble
areas are malfunctioning or not.
(a) Perform the ACTIVE TEST A/F CONTROL operation.
HINT:
The A/F CONTROL operation lowers the injection volume 12.5 % or increases the injection volume 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 idle (press the right or left button).

A81695
E8
ECM
O1B-
OX1B
HT1B
05-126
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
316 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
1 CHECK OTHER DTC OUTPUT
(a) Read the DTC using the hand-held tester or the OBD II scan tool.
Result:
Display (DTC Output)Proceed to
P0138 is outputA
P0137 is outputB
P0136 is outputC
HINT:
If any other codes besides P0136, P0137 and/or P138 are output, perform the troubleshooting for those
codes first.
B Go to step 9
C Go to step 6
A
2 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (OUTPUT
VOLTAGE OF HEATED OXYGEN SENSOR)
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Turn ON the ignition switch. Push the hand-held tester or the OBD II scan tool main switch ON.
(c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / O2S B1S2.
(d) Run the engine at idle.
(e) Read the output voltage of the heated oxygen sensor during idling.
Heated oxygen sensor output voltageProceed to
More than 1.2 VA
Less than 1.0 VB
B READ OUTPUT DTC
A
3 CHECK WIRE HARNESS (CHECK FOR SHORT)
(a) Turn the ignition switch OFF and wait for 5 minutes.
(b) Disconnect the E8 ECM connector.
(c) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
E8-21 (HT1B) - E8-29 (OX1B)10 kW or higher
E8-21 (HT1B) - E8-2 (O1B-)10 kW or higher
OK REPLACE ECM (See page 10-9)
NG

A80018
H10
Heated Oxygen Sensor
E1 OX
+B
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-127
317 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT)
(a) Disconnect the H10 heated oxygen sensor connector.
(b) Measure the resistance of the sensor side connectors.
Standard:
Tester ConnectionSpecified Condition
H10-1 (+B) - H10-3 (E1)10 kW or higher
H10-1 (+B) - H10-4 (OX)10 kW or higher
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG
REPLACE HEATED OXYGEN SENSOR
5 READ OUTPUT DTC (CHECK MODE)
(a) Change the ECM to check mode with the hand-held tester.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / CHECK MODE.
(b) Warm up the engine and drive the vehicle at over 25 mph (40 km/h) for an accumulated total of 10
minutes.
HINT:
The 10 minutes of driving should be driven in one instance, but it is not necessary to maintain a speed of
25 mph (40 km/h) for 10 minutes consecutively.
(c) Read the DTC.
Result:
Display (DTC output)Proceed to
P0136 is outputA
No DTCB
B CHECK FOR INTERMITTENT PROBLEMS
(See page 05-9)
A
REPLACE HEATED OXYGEN SENSOR
6 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (OUTPUT
VOLTAGE OF HEATED OXYGEN SENSOR)
(a) After warming up the engine, run the engine at 2,500 rpm for 3 minutes.
(b) Read the output voltage of the heated oxygen sensor when the engine rpm is suddenly increased.
HINT:
Quickly accelerate the engine to 4,000 rpm 3 times by using the accelerator pedal.
Heated oxygen sensor output voltage: Alternates 0.4 V or less and 0.5 V or more.
OK Go to step 10
NG

A87979
+12.5 %
Normal Malfunction-12.5 %
0 3.3 V
1 VA/F Sensor Output
Heated Oxygen Sensor OutputInjection Volume
Malfunction
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-131
321 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
15 PERFORM ACTIVE TEST USING HAND-HELD TESTER
(a) Start the engine and warm it up.
(b) Connect the hand-held tester to the DLC3.
(c) Turn ON the ignition switch and the hand-held tester main switch.
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INJ VOL.
(e) Using the hand-held tester, change the injection volume to check the A/F sensor output and heated
oxygen sensor output values below.
HINT:
Change the injection volume from -12.5 % to +12.5 %.
Result:
A/F sensor output remains more than 3.3 V or A/F sensor output remains less than 3.3 V
(Heated oxygen sensor reacts in accordance with increase and decrease of injection volume)
OK REPLACE AIR FUEL RATIO SENSOR
NG
CHECK AND REPLACE EXTREMLY RICH OR LEAN ACTUAL AIR FUEL RATIO (INJECTOR, FUEL
PRESSURE, GAS LEAKAGE IN EXHAUST SYSTEM, ETC.)

05-134
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
324 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
Fuel system statusClosed Loop
Battery voltage11 V or more
Throttle position learningCompleted
Either of the following conditions is met:Condition 1 or 2
1. Engine RPMLess than 1,100 rpm
2. Intake air amount per revolution0.22 g/rev or more
TYPICAL MALFUNCTION THRESHOLDS
Purge-cutExcecuting
Either of the following conditions is met:Condition 1 or 2
1. Average between short-term fuel trim and long-term fuel
trim34% or more (varies with ECT)
2. Average between short-term fuel trim and long-term fuel
trim-34% or less (varies with ECT)
WIRING DIAGRAM
Refer to DTC P2195 on page 05-269.
INSPECTION PROCEDURE
HINT:
Hand-held tester only:
It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The
A/F CONTROL operation can determine if the A/F sensor, heated oxygen sensor or other potential trouble
areas are malfunctioning 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