Air Pump On-Vehicle Inspection

Start the engine and warm it up.

Turn the ignition switch off.

Connect the 400 A probe of an ammeter to the positive (+) wire of the air pump.

Connect the GTS to the DLC3.

Turn the ignition switch to ON and turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Utility / Air injection check / Manual Mode / AIR PUMP: ON, ASV: OPEN.

HINT:

When Manual Mode is selected, GTS initialization (atmospheric pressure measurement) is performed automatically. Initialization takes 10 seconds. After initialization, AIR PUMP and ASV operation can be selected.

Measure the current while the air pump is operating.

Standard Current:

Tester Operation	Air Pump	ASV	Specified Condition
AIR PUMP: ON, ASV: OPEN	ON	OPEN	10 to 40 A
AIR PUMP: OFF, ASV: CLOSE	OFF	CLOSE	Below 1 A

Turn the ignition switch off.

NOTICE:

1. Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds.
   Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks.
   While AIR system operation using the GTS prohibited, the GTS display indicates the prohibition (WAIT or ERROR).
   If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
   
2. Performing Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between Air Injection Check operations to prevent the system from overheating.
   
3. When performing the Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
   
4. Turn the ignition switch off when the Air Injection Check operation finishes.