Auxiliary Port Valve (APV) Motor Inspection (138-MSP (High Power))

AUXILIARY PORT VALVE (APV) MOTOR INSPECTION (13B-MSP (HIGH POWER))

Resistance Inspection
1. Remove the APV motor. (See INTAKE - AIR SYSTEM REMOVAL/INSTALLATION.)




2. Measure the resistance between the APV motor terminals using an ohmmeter.
- If not as specified, replace the APV motor. (See INTAKE - AIR SYSTEM REMOVAL/INSTALLATION.)
- If as specified, carry out the "Circuit Open/Short Inspection".

APV motor resistance: 8 - 50 Ohms

Operation Inspection

CAUTION: Applying voltage to the APV motor terminals for more than 3 s may damage the APV motor.

1. Disconnect the negative battery cable.
2. Remove the APV motor.







3. Apply 12 V with a current of 0.9 - 1.9 A to terminal B or D and verify that the gear moves.
- If there is no malfunction, carry out the "Circuit Open/Short Inspection".
- If there is any malfunction, replace the APV motor. (See INTAKE - AIR SYSTEM REMOVAL/INSTALLATION.)

Circuit Open/Short Inspection




1. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Open circuit
- If there is no continuity, the circuit is open. Repair or replace the wiring harness.
- APV motor terminal B and PCM terminal 3J
- APV motor terminal D and PCM terminal 3G

Short circuit
- If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- APV motor terminal B and power supply
- APV motor terminal B and body GND
- APV motor terminal D and power supply
- APV motor terminal D and body GND