2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1785 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A54404
ECM
E5
21 (PPMP)
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-207
397 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK HARNESS AND CONNECTOR(PUMP MODULE - ECM)
(a) Turn the ignition

Page 1786 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85252
A54404 A54404
ECM
E5
21
05-208
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
398 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK HARNESS AND CONNECTOR(PUMP MODULE - ECM)
(a) Remove the

Page 1787 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85252
A85258
Wire Harness Side
C17
Canister
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-209
399 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK HARNESS AND CONNECTOR(PUMP MODULE - ECM)
(

Page 1788 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85252
05-210
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
400 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 REPLACE PUMP MODULE
(a) Remove the exhaust tail pipe.
(b) Remove the heat insulator under

Page 1789 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-573
763 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0451 EVAPORATIVE EMISSION CONTROL
SYSTEM PRESSURE SENSOR
RANGE/PERFORMANCE
DTC P0452 EVAPORAT

Page 1790 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A76973
ECM
Fuel Tank
Charcoal
Canister EVAP VSV
Vapor Pressure
Sensor
CCV EVAP Service
PortIntake Air
Throttle
Valve
Fuel Tank Cap
Air Cleaner Case
Charcoal Canister Filter Charcoal Filter
Intake

Page 1791 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-575
765 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)DTC No.
DTC Detection ConditionTrouble Area
P0451
Vapor pressure sensor output changes extremely un

- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-575
765 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)DTC No.
DTC Detection ConditionTrouble Area
P0451
Vapor pressure sensor output changes extremely under these
conditions:
Vapor pressure sensor output changes often while vehicle
speed is 0 km/h (0 mph) and the engine is idling 5 to 10 se-
conds (2 trip detection logic)
Vapor pressure sensor output is stuck 5 minutes (2 trip detec-
tion logic)
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0452Vapor pressure sensor output remains less than -30 mmHg
(2 trip detection logic)Open or short in vapor pressure sensor circuit
Vapor pressure sensor
ECM
P0453Vapor pressure sensor output remains more than 15 mmHg
(2 trip detection logic)Open or short in vapor pressure sensor circuit
Vapor pressure sensor
ECM
MONITOR STRATEGY
Related DTCs
P0451: FTP Sensor Noise
P0451: FTP Sensor Stuck
P0452: FTP Sensor Range Check (Low voltage)
P0453: FTP Sensor Range Check (High voltage)
Required sensors / components (Main)FTP sensor
Required sensors / components (Related)ECT sensor, IAT sensor
Frequency of operationOnce per driving cycle
Duration
7 seconds: FTP Sensor Range Check
45 seconds: FTP Sensor Noise
5 minutes: FTP Sensor Stuck
MIL operation2 driving cycles
Sequence operationNone
TYPICAL ENABLING CONDITIONS
All:
The monitor will run whenever these DTCs are not presentSee page 05-377
FTP Sensor Noise P0451:
Altitude7,870 ft. (2,400 m) or less
Battery voltage11 V or more
Throttle position learningCompleted
FTP sensor malfunction (P0452, P0453)Not detected
IAT at engine start - ECT at engine start-7 to 11.1C (-12.6 to 20F)
EVAP VSV, CCVNot operated by scan tool
ECT at engine start4.4 to 35C (40 to 95F)
IAT at engine start4.4 to 35C (40 to 95F)
FTP Sensor Stuck P0451:
Altitude7,870 ft. (2,400 m) or less
Battery voltage11 V or more
Throttle position learningCompleted
FTP sensor malfunction (P0452, P0453)Not detected
IAT at engine start - ECT at engine start-7 to 11.1C (-12.6 to 20F)
EVAP VSV, CCVNot operated by scan tool
ECT at engine start4.4 to 35C (40 to 95F)
IAT at engine start4.4 to 35C (40 to 95F)
Time after engine start5 seconds or more
0.04 inch leakNot detected
0.02 inch leakNot detected
CCV malfunctionNot detected

Page 1792 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A76903
E2 (-) VC (+)E7
ECM
05-576
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
766 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
FTP Sensor Range Check P0452,P0453:
ECT at engine start10 to 35C (50 t

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