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Throttle Body: Testing and Inspection

THROTTLE BODY INSPECTION

NOTE: Perform the following inspection only when directed.

Resistance Inspection
1. Disconnect the negative battery cable.
2. Disconnect the throttle body connector.







3. Measure the resistance between throttle actuator terminals E and F.
- If not as specified, replace the throttle body. (See INTAKE-AIR SYSTEM REMOVAL/ INSTALLATION)
- If as specified, carry out the "Circuit Open/Short Inspection".

Circuit Open/Short Inspection




1. Disconnect the PCM connector.
2. Inspect the following 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 actuator terminal F and PCM terminal 2A
- Throttle actuator terminal E and PCM terminal 2B

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- Throttle actuator terminal F and power supply
- Throttle actuator terminal F and GND
- Throttle actuator terminal E and power supply
- Throttle actuator terminal E and GND
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