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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Toyota Sequoia car and truck
repair procedures including Toyota engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 2003 Toyota Sequoia automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Toyota -> Manual Air Conditioning & Heater System Diagnosis & Testing -> System Diagnosis -> Refrigerant System
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
Refrigerant System
To diagnose system, connect manifold gauge set to high and low sides of system, then observe gauge readings with engine operating at 1500 RPM, blower speed on high and temperature control set at Max Cool. Refer to charts, Figs. through , for system diagnosis.
On all models except Sequoia, with ambient temperature at 8...
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Toyota -> Electric Cooling Fans -> Precautions -> Air Bag System Disarming & Arming -> Audio Coded Anti-Theft System -> Battery Ground Cable -> Product Compatibility
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
Air Bag System Disarming & Arming
Refer to and for air bag system disarming and arming procedures.
Audio Coded Anti-Theft System
Some models are equipped with an audio coded anti-theft system that will disable the radio when the battery cable is disconnected. The system can be identified by the "ANTI-THEFT SYSTEM" on the cassette tape lid. Obtain 3-digit customer code for input. Reset system after service as follows:
- Obtain 3-digit audio anti-theft code.
- Depress 1 (PROG) while depressing righthand side of TUNE SEEK button. - - - will ap...
CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Sequoia A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Toyota -> Automatic Temperature Control System Diagnosis & Testing -> Diagnosis & Testing, Sequoia -> A/C Control Display -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Tests -> Less Scan Tool -> Scan Tool
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
Accessing Diagnostic Trouble Codes
Scan Tool
Connect a suitably programmed scan tool to Data Link Connector (DLC) and follow scan tool manufacturer's instructions.
A/C Control Display
If the A/C compressor locks up during operation, the HVAC assembly A/C switch indicator will begin blinking. Inspect for compressor lock DTC 22, then inspect the circuit or component.
Entering diagnosis inspection modes is possible by operating each A/C control switch as illustrated, Fig. .
- Turn ignition On while pressing A/C co...
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Toyota -> Component Replacement & Adjustment -> Pressure Switch, Replace
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Recover refrigerant as outlined under .
- Disconnect pressure switch electrical connector.
- Remove pressure switch using suitable wrenches to avoid damaging refrigerant lines. Discard O-ring.
- Reverse procedure to install, noting the following:
- Do not use old O-rings. Always install new ones lubricated with fresh ref...
CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Sequoia A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Imported Vehicles
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
CLICK HERE TO GET FULL ACCESS TO 2003 Toyota Sequoia A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Toyota Sequoia AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 2003 Toyota Sequoia cars and light trucks from 1990+
Air Bag System Precautions -> Toyota -> Arming
Vehicle: 2003 Toyota Sequoia 4.7 V8 GAS
- Ensure ignition switch is in Lock position.
- Reconnect battery ground cable.
- Wait at least 10 seconds before turning the ignition switch from the Lock position.
- Place ignitio...
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