Troubleshooting Procedures:
***Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.***
* Disconnect the Intake Flap Motor (V157) electrical harness connector.
Checking voltage
• Switch the ignition On.
* Using a multimeter, measure voltage supply between connector terminals 1 to 3 for voltage. Refer to Wiring Diagrams for Pin locations.
Specified value: approx. 5 V.
* Using a multimeter, measure voltage supply between connector terminals 4 to 5 for voltage.
Specified value: near 4.35 V.
* Using a multimeter, measure voltage supply between connector terminals 2 to 3 for voltage.
Specified value: approx. 5.01 V.
* Switch the ignition Off.
If the specified value was not obtained:
* Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
* Check the wiring connections for damage, corrosion, loose or broken terminals.
* If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and the voltage readings were correct:
• Replace the Intake Flap Motor (V157). Refer to the service information for removal and installation procedures.
If no malfunction is detected in the wiring and the voltage readings were Not correct:
Checking wiring
* Remove the Engine Control Module (ECM) (J623). Refer to the repair information.
* Using a multimeter, check the Intake Flap Motor (V157) electrical harness connector to the Engine Control Module (ECM) (J623) electrical harness T60 connector for resistance. Refer to Wiring Diagrams for Pin locations.
Specified value: 1.5 ohms Max.
If the specification was not obtained:
* Check the wiring for a short circuit to each other, Battery positive, Ground or high resistance.
* If necessary, repair the faulty wiring connection.
* Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If no malfunction is detected in the wiring and the voltage readings were Not correct:
* Replace the Engine Control Module (ECM) (J623). Refer to the service information for removal and installation procedures.
Final procedures