2003 Toyota 4Runner Transmission Electrical Parts

The Automatic Transmission Fluid Temperature Sensor provides an input to the transmission control module as to the operating temperature of the automatic transmission fluid under the many operating conditions. The transmission control module will provide the transmission hydraulic circuits the optimal fluid pressure for current temperature conditions.

Product Features:

• Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
• 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
• 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
• Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
• Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
• Application matched components ensures system operation in like new condition.

Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:

• Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
• Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
• Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
• Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
• 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
• 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.

This automatic transmission wiring harness connector matches the fit and function of the original equipment connector. Factory-style plug and terminals come with wiring pre-installed for quick, reliable splices into the original harness.

Product Features:

• Time-saving replacement – this automatic transmission pigtail connector is pre-wired using a factory style plug and terminals
• Durable construction – this pigtail connector is made using corrosion-resistant terminals and sturdy connector
• Cost-effective solution – offers original equipment quality without the cost of replacing the entire harness
• Quality tested – this part has undergone try-on, corrosion and material testing to ensure a quality fit and long service life

This automatic transmission speed sensor matches the fit and function of the original equipment sensor to restore critical speed-dependent vehicle functions. This part has been engineered and rigorously tested to ensure reliable performance.

Product Features:

• Direct replacement – this automatic transmission speed sensor matches the fit and function of the original equipment sensor
• Durable construction – this sensor is engineered to precise standards to ensure accurate signal output
• Easy installation – this sensor is installed using the original hardware and plugs into the vehicle’s existing wiring
• Quality tested – this part has undergone try-on validation and rigorous quality testing to ensure a quality fit and long service life

Carquest Premium vehicle speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium vehicle speed sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each vehicle speed sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium speed sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• O-rings or seals are included (where applicable)
• Magnet size and strength optimized for precise signal output.
• Weather-tight connectors prevent leaks and corrosion for longer life
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

The ABS or Anti-Lock Brake System ECU monitors the Wheel Speed Sensors rotational speed for anti-lock brake function, stability control and traction control. The ABS sensors report the speed of all four wheels to the ECU to determine if the wheels are locking up and to help provide safer stopping. Reasons for replacement include: ABS/brake lamp illumination, no or erratic ABS operation or problems with stability and or traction control systems.

Product Features:

• OE MATCHED: Manufactured to OE performance standards. Connectors, mounts and wire lengths are exact match to OE for worry free installation.
• INSTALLATION AND SUPPORT: Includes all necessary brackets and hardware. Application specific harness length
• THE DIFFERENCE: Glass reinforced plastic for better contamination resistance. Weather pack connectors prevent dirt and moisture contamination. Grease, mounting nut and instruction sheet included where applicable.

The ABS or Anti-Lock Brake System ECU monitors the Wheel Speed Sensors rotational speed for anti-lock brake function, stability control and traction control. The ABS sensors report the speed of all four wheels to the ECU to determine if the wheels are locking up and to help provide safer stopping. Reasons for replacement include: ABS/brake lamp illumination, no or erratic ABS operation or problems with stability and or traction control systems.

Product Features:

• OE MATCHED: Manufactured to OE performance standards. Connectors, mounts and wire lengths are exact match to OE for worry free installation.
• INSTALLATION AND SUPPORT: Includes all necessary brackets and hardware. Application specific harness length
• THE DIFFERENCE: Glass reinforced plastic for better contamination resistance. Weather pack connectors prevent dirt and moisture contamination. Grease, mounting nut and instruction sheet included where applicable.

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

• Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• Product constructed to meet all design and operating characteristics as intended by the manufacturer.

Carquest Premium vehicle speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium vehicle speed sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each vehicle speed sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium speed sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• O-rings or seals are included (where applicable)
• Magnet size and strength optimized for precise signal output.
• Weather-tight connectors prevent leaks and corrosion for longer life
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

AT Input Sensor