Page 31 of 4323
DTC No.
Indicates the diagnostic trouble code.
Page or Instructions
Indicates the page where the inspection procedure
for each circuit is to be found, or gives instructions
for checking and repairs.
Detection Item
Indicates the system of the problem or
contents of the problem. Trouble Area
Indicates the suspect area of the
problem.
Mass Air Flow Circuit MalfunctionDetection Item
Open or short in mass air flow meter circuit
Mass air flow meter
ECM DTC No.
(See page)Trouble AreaMIL* MemoryP0100
(DI±24)
P0101
(DI±28)
P0115
(DI±33) Open or short in intake air temp. sensor
circuit
Intake air temp. sensor
ECM Intake Air Temp. Circuit
Malfunction P0110
(DI±29)
Open or short in engine coolant temp. sensor circuit
Engine coolant temp. sensor
ECM
Throttle/ Pedal Position Sensor/Switch
ºAº Circuit MalfunctionEngine Coolant Temp.
Circuit Malfunction
Open or short in throttle position sensor circuit
Throttle position sensor
ECM
DTC CHART (SAE Controlled)
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument or other
factors.
If a malfunction code is displayed during the DTC check mode, check the circuit for that code listed in the table
below. For details of each code, turn to the page referred to under the ºSee pageº for the respective ºDTC No.º
in the DTC chart.
Mass Air Flow Circuit
Range/ Performance Problem Mass air flow meter
Throttle position sensor Throttle/ Pedal Position Sensor/ Switch
ºAº Circuit Range / Performance Prob-
lem P0116
(DI±37)Engine Coolant Temp.
Circuit Range/ Performance Problem Engine coolant temp. sensor
Cooling system
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN±31
31 Author: Date:
2005 SEQUOIA (RM1146U)
4. DIAGNOSTIC TROUBLE CODE CHART
The inspection procedure is shown in the table below. This table permits efficient and accurate troubleshoot-
ing using the diagnostic trouble codes displayed in the diagnostic trouble code check. Proceed with trouble-
shooting in accordance with the inspection procedure given in the diagnostic chart corresponding to the
diagnostic trouble codes displayed. The engine diagnostic trouble code chart is shown below as an example.
Page 73 of 4323
PP1AQ±04
± PREPARATIONCOOLING
PP±15
73 Author: Date:
2005 SEQUOIA (RM1146U)
COOLING
EQUIPMENT
HeaterThermostat
Radiator cap tester
ThermometerThermostat
Torque wrench
Page 74 of 4323
PP1AR±04
PP±16
± PREPARATIONCOOLING
74 Author: Date:
2005 SEQUOIA (RM1146U)
COOLANT
ItemCapacityClassification
Engine coolant11.6 liters (12.3 US qts, 10.2 lmp. qts)
ºToyota Super Long Life Coolantº or similar high
quality ethylene glycol based non±silicate, non±
amine, non±nitrite, and non±borate coolant with
long±life hybrid organic acid technology
Page 75 of 4323
PP1AS±03
± PREPARATIONCOOLING
PP±17
75 Author: Date:
2005 SEQUOIA (RM1146U)
SSM (Special Service Materials)
08826±00100Seal Packing 1282B,
THREE BOND 1282B or equivalent
(FIPG)Water inlet housing
Page 156 of 4323
SS0O9±05
SS±14
± SERVICE SPECIFICATIONSCOOLING
156 Author: Date:
2005 SEQUOIA (RM1146U)
COOLING
SERVICE DATA
ThermostatValve opening temperature
Valve lift at 95°C (203°F)80 to 84°C (176 to 183°F)
10 mm (0.39 in.) or more
Radiator capRelief valve opening pressure Standard
Minimum74 to 103 kPa (0.75 to 1.05 kgf/cm2, 10.7 to 14.9 psi)
59 kPa (0.6 kgf/cm2, 8.6 psi)
Page 157 of 4323
SS0OA±04
± SERVICE SPECIFICATIONSCOOLING
SS±15
157 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Drain plug x Union on cylinder block12.71309
Fan x Fluid coupling8.58575 in.´lbf
Water pump x Cylinder block Bolt
Stud bolt and nut21
18215
18515
13
Water inlet housing x Water pump1818513
Water inlet x Water inlet housing1919514
Radiator x Radiator support12.71309
No.1 fan shroud x Radiator55044 in.´lbf
Radiator mounting bolt121209
Page 194 of 4323
SS0O4±05
SS±52
± SERVICE SPECIFICATIONSAIR CONDITIONING
194 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
REFRIGERANT LINE
Receiver x Liquid tube5.45548 in.´lbf
Condenser x Discharge hose5.45548 in.´lbf
Condenser x Liquid tube5.45548 in.´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Liquid and suction tube (Nut)5.45548 in.´lbf
Liquid and suction tube x Rear A/C unit5.45548 in.´lbf
COOLING UNIT
Evaporator x Expansion valve x Liquid and suction tube3.53631 in.´lbf
REAR A/C UNIT
Tube and accessory x Evaporator5.45531 in.´lbf
Tube and accessory x Expansion valve2223516
Expansion valve x Liquid tube1313510
COMPRESSOR AND MAGNETIC CLUTCH
Compressor x Engine (Bolt)4748035
Compressor x Bracket x Engine (Nut)2525518
Pressure plate x Rotor x Compressor1818412.3
PRESSURE SWITCH
Pressure switch x Liquid tube101007
WATER TEMPERATURE SWITCH
Water temperature switch x Radiator7.47565 in.´lbf
Page 254 of 4323
DI±60
± DIAGNOSTICSENGINE
254 Author: Date:
2005 SEQUOIA (RM1146U)P0122
(DI±127)
Throttle/Pedal Position Sensor/
Switch ºAº Circuit Low Input
Short in throttle control motor and sensor circuit
Throttle control motor and sensor
Short in VTA1 circuit
Open in VC circuit
ECM
P0123
(DI±127)Throttle/Pedal Position Sensor/
Switch ºAº Circuit High Input
Open in throttle control motor and sensor circuit
Throttle control motor and sensor
Open in VTA1 circuit
Open in E2 circuit
VC and VTA1 circuit are short±circuited
ECM
P0125
(DI±139)Insufficient Coolant Temperature
for Closed Loop Fuel ControlCooling system
Engine coolant temperature sensor
Thermostat
P0128
(DI±142)Coolant Thermostat (Coolant
Temperature Below Thermostat
Regulating Temperature)Thermostat
Cooling system
Engine coolant temperature sensor
ECM
P0136
(DI±146)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
HO2 sensor heater (sensor 2)
Air±Fuel Ratio (A/F) sensor (sensor 1)
EFI relay
Gas leakage from exhaust system
P0137
(DI±146)Oxygen Sensor Circuit Low Volt-
age (Bank 1 Sensor 2)
Open in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
HO2 sensor heater (sensor 2)
EFI relay
Gas leakage from exhaust system
P0138
(DI±146)Oxygen Sensor Circuit High Volt-
age (Bank 1 Sensor 2)Short in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
ECM internal circuit malfunction
P0156
(DI±146)Oxygen Sensor Circuit Malfunc-
tion (Bank 2 Sensor 2)
Open or short in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
HO2 sensor heater (sensor 2)
Air±Fuel Ratio (A/F) sensor (sensor 1)
EFI relay
Gas leakage from exhaust system
P0157
(DI±146)Oxygen Sensor Circuit Low Volt-
age (Bank 2 Sensor 2)
Open in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
HO2 sensor heater (sensor 2)
EFI relay
Gas leakage from exhaust system
P0158
(DI±146)Oxygen Sensor Circuit High Volt-
age (Bank 2 Sensor 2)Short in HO2 sensor (sensor 2) circuit
HO2 sensor (sensor 2)
ECM internal circuit malfunction
