Toyota Sequoia (2005). Manual — part 180
DIDIH–01
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DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–515
709
AUTOMATIC TRANSMISSION
PRECAUTION
NOTICE:
Perform the RESET MEMORY (AT initialization) when replacing the automatic transmission assy, en-
gine assy or ECM
(See page
HINT:
RESET MEMORY cannot be completed by only disconnecting the battery terminal.
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System Name
See Page
Back Door Power Window Control System
DIDII–01
DI–516
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DIAGNOSTICS
AUTOMATIC TRANSMISSION
710
DEFINITION OF TERMS
Term
Definition
Monitor description
Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCs
A group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic.
Typical enabling condition
Preconditions that allow the ECM to detect malfunctions.
With all preconditions satisfied, the ECM sets the DTC when the monitored value(s) exceeds the malfunction
threshold(s).
Sequence of operation
The priority order that is applied to monitoring, if multiple sensors and components are used to detect the malfunc-
tion.
While another sensor is being monitored, the next sensor or component will not be monitored until the previous
monitoring has concluded.
Required sensor/compo-
nents
The sensors and components that are used by the ECM to detect malfunctions.
Frequency of operation
The number of times that the ECM checks for malfunctions per driving cycle.
”Once per driving cycle” means that the ECM detects malfunction only one time during a single driving cycle.
”Continuous” means that the ECM detects malfunction every time when enabling condition is met.
Duration
The minimum time that the ECM must sense a continuous deviation in the monitored value(s) before setting a
DTC. This timing begins after the ”typical enabling conditions” are met.
Malfunction thresholds
Beyond this value, the ECM will conclude that there is a malfunction and set a DTC.
MIL operation
MIL illumination timing after a defect is detected.
”Immediately” means that the ECM illuminates MIL the instant the ECM determines that there is a malfunction.
”2 driving cycle” means that the ECM illuminates MIL if the same malfunction is detected again in the 2nd driving
cycle.
Component operating range
Normal operation range of sensors and solenoids under normal driving conditions.
Use these ranges as a reference.
They cannot be used to judge if a sensor or solenoid is defective or not.
DIDIJ–01
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DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–517
711
TOYOTA PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
Part and system name
Definition
Toyota HCAC system, Hydrocarbon adsorptive Catalyst
(HCAC) system, HC adsorptive three–way catalyst
HC adsorptive three–way catalytic converter
Variable Valve Timing sensor, VVT sensor
Camshaft position sensor
Variable valve timing system, VVT system
Camshaft timing control system
Camshaft timing oil control valve, Oil control valve OCV,
VVT, VSV
Camshaft timing oil control valve
Variable timing and lift, VVTL
Camshaft timing and lift control
Crankshaft position sensor ”A”
Crankshaft position sensor
Engine speed sensor
Crankshaft position sensor
THA
Intake air temperature
Knock control module
Engine knock control module
Knock sensor
Engine knock sensor
Mass or volume air flow circuit
Mass air flow sensor circuit
Vacuum sensor
Manifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCM
Power
train control module
FC idle
Deceleration fuel cut
Idle air control valve
Idle speed control
VSV for CCV, Canister close valve VSV for canister control
Evaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VAV, Purge VSV
Evaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSV
Evaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensor
Fuel tank pressure sensor
Charcoal canister
Evaporative emissions canister
ORVR system
On–board refueling vapor recovery system
Intake manifold runner control
Intake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)
Intake manifold tuning valve
Intake control VSV
Intake manifold tuning solenoid valve
AFS
Air fuel ratio sensor
O2 sensor
Heater oxygen sensor
Oxygen sensor pumping current circuit
Oxygen sensor output signal
Oxygen sensor reference ground circuit
Oxygen sensor signal ground
Accel position sensor
Accelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motor
Electronic throttle actuator
Electronic throttle control system, Throttle actuator control
system
Electronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switch
Throttle position sensor
Turbo press sensor
Turbocharger pressure sensor
Turbo VSV
Turbocharger pressure control solenoid valve
P/S pressure switch
Power–steering pressure switch
VSV for ACM
Active control engine mount
Speed sensor, Vehicle speed sensor ”A”, Speed sensor for
skid control ECU
Vehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ”A”
Transmission fluid temperature sensor
Electronic controlled automatic transmission, ECT
Electronically controlled automatic
Intermediate shaft speed sensor ”A”
Counter gear speed sensor
DI–518
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DIAGNOSTICS
AUTOMATIC TRANSMISSION
712
Output speed sensor
Output shaft speed sensor
Input speed sensor, Input turbine speed sensor ”A”, Speed
sensor (NT), Turbine speed sensor
Input turbine speed sensor
PNP switch, NSW
Park/neutral position switch
Pressure control solenoid
Transmission pressure control solenoid
Shift solenoid
Transmission shift solenoid valve
Transmission control switch, Shift lock control unit
Shift lock control module
Engine immobilizer system, Immobilizer system
Vehicle anti–theft system
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