Throttle Actuator Inspection

THROTTLE ACTUATOR 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 the throttle actuator terminals using an ohmmeter.
- 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 harness.
- Throttle actuator terminal B (harness-side) and PCM terminal 54
- Throttle actuator terminal A (harness-side) and PCM terminal 80

Short circuit

- If there is continuity, the circuit is shorted. Repair or replace the harness.
- Throttle actuator terminal B (harness-side) and power supply
- Throttle actuator terminal B (harness-side) and GND
- Throttle actuator terminal A (harness-side) and power supply
- Throttle actuator terminal A (harness-side) and GND