Repairing A 2102 Toyota Tacoma Sec Switching Valve

(12) Turn the ignition switch to OFF.

NOTICE:

• This 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 intelligent tester is prohibited, the tester display indicates the prohibition (WAIT or ERROR).

If an ERROR as shown in the illustration is displayed on the tester during the test, stop the engine for 10 minutes, and then try again.

• Performing the AIR INJ CHECK repetitively may cause damage to the AIR system. If necessary, leave an interval of several minutes between SYSTEM CHECK operations to prevent the system from overheating.

• When performing the AIR INJ CHECK operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.

• Turn the ignition switch to OFF when the AIR INJ CHECK operation finishes.

Standard

Air Pump Operations

ASV Operations

Exhaust Gas Pulsation

ON

OFF

Not detected

ON

ON

Detected

Intelligent Tester Display:

AIR INJ CHECK

MANUAL OPERATION

AIR PUMP

ON

ASV

OPEN

A/F BANK1

19.095

PRESSURE

17 kPa-g

PULSATION

25.39 kPa-g

AI STATUS

OK

Remaining Time 05 sec.

Press IEXITI to

(13) Reconnect the No. 1 air injection system hose.

(14) Reconnect the air cleaner hose. (b) Other inspection method:

The ASV operation can be confirmed by checking the cumulative pressure pulsation* provided in the SYSTEM CHECK.

Perform SYSTEM CHECK operation under MANUAL OPERATION.

*: The exhaust pulsation value is calculated in the ECM. If the calculated value exceeds a certain level, the ECM determines that the exhaust pulsation is in the AIR system.

(1) Start the engine and warm it up.

(2) Turn the ignition switch to OFF.

(3) Connect the intelligent tester to the DLC3.

(4) Turn the ignition switch to ON and turn the tester ON.

(5) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / MANUAL OPERATION / AP: ON, ASV OPEN and AP: OFF, ASV: CLOSE.

(6) Start the engine after the tester initialization is finished.

(7) Perform the AIR system intrusive operation while the engine is idling.

(8) Check that the air-fuel ratio and pressure in the secondary air injection system passage (PULSATION) displayed on the tester, indicate the conditions shown in the table below.

(9) Turn the ignition switch to OFF.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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