Air Pump On-Vehicle Inspection

Start the engine and warm it up.

Turn the engine 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 engine switch on (IG) and turn the GTS on.

Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP: ON, ASV1: OPEN, ASV2: 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:

Condition	Specified Condition
20°C (68°F)	10 to 40 A

Turn the engine switch off.

NOTICE:

1. Secondary Air Injection Check only allows technicians to operate the Secondary Air injection 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 Secondary Air injection system operation using the GTS is 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 Secondary Air Injection Check repeatedly may cause damage to the Secondary Air injection system. If necessary, leave an interval of several minutes between Secondary Air Injection Check operations to prevent the system from overheating.
   
3. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch on (IG) or the engine running.
   
4. Turn the engine switch off when the Secondary Air Injection Check operation finishes.