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DICEL±02
± DIAGNOSTICSENGINE
DI±27
221 Author: Date:
2005 SEQUOIA (RM1146U)
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 in the form of Diagnostic Trouble Codes
(DTCs). Since the various components need to be monitored during different driving conditions, the
OBD II system is designed to run separate monitoring programs called Readiness Monitors. Many
state Inspection and Maintenance (I/M) programs require that vehicles complete their Readiness Mon-
itors prior to beginning an emission test.
The current status of the Readiness Monitors can be seen by using the hand±held tester with version
9.0 software (or newer), or a generic OBD II Scan tool.
To view the Readiness Monitor status using the hand±held tester, select ºMonitor Statusº from the En-
hanced OBD II Menu.
A status of ºcompleteº indicates that the necessary conditions have been met to run the performance
tests for the related Readiness Monitor.
The Readiness Monitor will be reset to ºincompleteº if:
ECM has lost power (battery or fuse).
DTCs have been cleared.
The conditions for running the Readiness Monitor have not been met.
In the event that any Readiness Monitor shows ºincomplete,º follow the appropriate Readiness Monitor
Drive Pattern to activate the monitor and change the readiness status to ºcomplete.º
CAUTION:
Strictly observe the posted speed limits, traffic laws, and road conditions when performing these
drive patterns.
NOTICE:
These drive patterns represent the fastest method to satisfy all necessary conditions which allow
the specific readiness monitor to complete.
In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other fac-
tors) the drive pattern can be resumed, and in most cases, the readiness monitor will still set to ºcom-
pleteº.
To ensure rapid completion of readiness monitors, avoid sudden changes in vehicle load and speed
(driving up and down hills and/or sudden acceleration).
Contents:
TITLESTEP(s)
CATALYST MONITOR2
EVAP MONITOR3, 4
AIR±FUEL RATIO (A/F) AND OXYGEN SENSOR (O2S) MONITOR5
OXYGEN SENOSR HEATER MONITOR6
Page 4319 of 4323

05_SEQUOIA_U (L/O 0408)
460
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
Instrument panel
18. ETCS 10 A: Multiport fuel injection
system/sequential multiport fuel injec-
tion system, electronic throttle control
system
19. EFI NO.1 20 A: Multiport fuel injection
system/sequential multiport fuel injec-
tion system, on±board diagnosis sys-
tem
20. H±LP RH 15 A (without daytime run-
ning light system): Right±hand head-
light
21. TOWING 30 A: Trailer lights (stop
lights, turn signal lights, tail lights)
22. ALT±S 7.5 A: Charging system23. DRL 15 A (with daytime running light
system): Daytime running light system
H±LP LH 15 A (without daytime run-
ning light system): Left±hand head-
light
24. AM2 25 A: Starting system, multiport
fuel injection system/sequential multi-
port fuel injection system, electronic
throttle control system, ªIGN 1º and
ªIGN 2º fuses
25. TURN±HAZ 20 A: Turn signal lights,
emergency flashers
26. RAD NO.3 30 A: Audio/video system
27. ST 30 A: Starting system, ªSTAº fuse
28. HORN 10 A: Horns
29. EFI NO.2 10 A: Multiport fuel injection
system/sequential multiport fuel injec-
tion system
30. DOME 10 A: Center interior and per-
sonal lights, personal lights, luggage
compartment light, air conditioning sys-
tem, wireless remote control system,
garage door opener, ignition switch
light, door courtesy lights, foot light,
vanity lights, gauges and meters31. ECU±B 7.5 A: Multiplex communication
system (power door lock system, secu-
rity system, auto±door locking system,
automatic light control system, head-
light delay off system, tail light auto
cut system, illuminated entry system,
daytime running light system), back
door lock system, driver and front pas-
senger door lock system, gauges and
meters
32. MIR HTR 15 A: Outside rear view mir-
ror heaters
33. RAD NO.1 20 A: Audio system, rear
seat entertainment system
34. TAIL 15 A: Tail lights, back door cour-
tesy light, license plate lights
35. ECU±IG 10 A: Charging system, anti±
lock brake system, vehicle stability
control system, traction control system
(two±wheel drive models), active trac-
tion control system (four±wheel drive
models), electric moon roof, back door
lock system, driver and front passenger
door lock system, gauges and meters,
multi±information display, auto anti±
glare inside rear view mirror, power
outlets, multiplex communication sys-
tem
36. WSH 25 A: Wipers and washer
37. AC INV 15 A: Power outlets
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05_SEQUOIA_U (L/O 0408)
461
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
38. IGN 2 20 A: Starting system
39. PWR NO.3 20 A: Rear passenger 's
power window (right side)
40. PWR NO.4 20 A: Rear passenger 's
power window (left side)
41. CIG 15 A: Air conditioning systems,
power rear view mirror control, ciga-
rette lighter
42. RAD NO.2 7.5 A: Audio/video system,
power outlets, multiplex communication
system (power door lock system, secu-
rity system, auto±door locking system,
automatic light control system, head-
light delay off system, tail light auto
cut system, illuminated entry system,
daytime running light system)
43. 4WD 20 A: A.D.D. control system,
four±wheel drive system
44. STOP 15 A: Stoplights, high±mounted
stoplights, multiport fuel injection sys-
tem/sequential multiport fuel injection
system, vehicle stability control system,
traction control system (two±wheel
drive models), active traction control
system (four±wheel drive models), mul-
tiplex communication system
45. OBD 7.5 A: On±board diagnosis sys-
tem46. PANEL 7.5 A: Instrument panel lights,
glove box light, seat heaters, cigarette
lighter, ashtrays, multi±information dis-
play, audio/video system, gauge and
meters, air conditioning systems
47. PWR NO.1 25 A: Driver 's door lock
system
48. WIP 25 A: Wiper and washers
49. IGN 1 10 A: Charging system
50. SUN ROOF 25 A: Electric moon roof
51. PWR NO.2 25 A: Front passengers'
door lock system
52. HTR 10 A: Air conditioning systems,
electric cooling fan, back window de-
fogger, outside rear view mirror heater
53. FOG 15 A: Front fog lights
54. GAUGE 15 A: Back±up lights, seat
heaters, gauge and meters, air condi-
tioning systems
55. PWR OUTLET 15 A: Power outlets
56. SEAT HTR 15 A: Seat heatersFuses (type B)
57. MAIN 40 A: Starting system, ªH±LP
RHº, ªH±LP LHº and ªSTAº fuses
58. DOOR NO.2 30 A: Multiplex commu-
nication system (power door lock sys-
tem, security system, auto±door locking
system)
59. PWR SEAT 30 A: Power seats
60. AM1 40 A: ªHTRº, ªCIGº, ªGAUGEº,
ªRAD NO.2º, ªECU±IGº, ªWIPº, ªWSHº
and ª4WDº fuses
61. PWR NO.5 30 A: Power door lock sys-
tem, back door lock system
Fuses (type C)
62. RR HEATER 30 A: Rear air condition-
ing system
63. DEFOG 40 A: Back window defogger
64. HEATER 50 A: Front air conditioning
system
65. AIR SUS 50 A: Rear height control air
suspension system
66. TOWING R/B 60 A: Trailer brake con-
troller, trailer lights (tail lights), trailer
sub battery