Throttle Body: Testing and Inspection

THROTTLE BODY INSPECTION [LF]

NOTE: Perform the following inspection only when directed.

Resistance Inspection

1. Remove the battery cover.
2. Disconnect the negative battery cable.
3. Disconnect the throttle body connector,







4. Measure the resistance between throttle actuator terminals A and B.
- If not as specified, replace the throttle body (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF].)
- If as specified, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection

1. Disconnect the PCM connector,




2. Inspect the wiring harnesses for open or short (continuity check).

Open circuit
- If there is no continuity, the circuit is open. Repair or replace the wiring harness.
- Throttle valve actuator terminal A and PCM terminal 2B
- Throttle valve actuator terminal B and PCM terminal 2A

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- Throttle valve actuator terminal A and power supply
- Throttle valve actuator terminal A and ground
- Throttle valve actuator terminal B and power supply
- Throttle valve actuator terminal B and ground