Disassembly and Reassembly
Vehicles Without Traction Control:
Vehicles With Traction Control:
CLEANING THROTTLE BODY PARTS
1. Clean all throttle body parts.
Do not use solvents to clean the following parts:
- Throttle position sensor
- Accelerator pedal position sensor
- Idle speed control body assembly
If these parts are immersed in solvent, their insulation will deteriorate.
Wipe them with a cloth only.
2. Check if the vacuum port or passage is clogged. Use compressed air to clean the vacuum passage.
REASSEMBLY SERVICE POINT
>A< ACCELERATOR PEDAL POSITION SENSOR (APS) INSTALLATION
1. Install the APS so that if faces as shown in the illustration, and then tighten it with the screw.
2. Connect a multimeter between terminal 1 (APS power supply) and terminal 2 (APS output) of the APS connector, and check that the resistance increases gradually as the throttle valve is opened slowly to the fully open position.
Normal Condition:
3. Check the continuity between terminal 3 (closed throttle position switch) and terminal 4 (ground) of the APS connector when the throttle valve is fully closed and fully open.
If there is no continuity when the throttle valve is fully closed, turn the APS body anti-clockwise and then check again.
4. If there is an abnormality, replace the APS.
>B< THROTTLE POSITION SENSOR (TPS) INSTALLATION
1. Install the TPS so that if faces as shown in the illustration, and then tighten it with the screw.
2. Connect a multimeter between terminal 4 (TPS power supply) and terminal 3 (TPS output) of the TPS connector, and check that the resistance increases gradually as the throttle valve is opened slowly to the fully open position.
3. For vehicles without TCL, check the continuity between terminal 2 (closed throttle position switch) and terminal 1 (ground) of the TPS connector when the throttle valve is fully closed and fully open.
If there is no continuity when the throttle valve is fully closed, turn the TPS body anti-clockwise and then check again.
4. If there is an abnormality, replace the TPS.