P2445

DTC P2445 SECONDARY AIR INJECTION SYSTEM PUMP STUCK OFF BANK 1

CIRCUIT DESCRIPTION

DTC Detection Condition:

To accelerate the activation of catalyst when warming up the engine, the air injection system pumps the secondary air to the exhaust manifold. The secondary air is supplied by the air pump and it is pumped to the exhaust manifold through the air switching valve. Open and close movement of the air switching valve is regulated by the vacuum switching valve (VSV).The air pump and the air switching valve are observed by the ECM and are used to detect malfunction in this system.

The ECM monitors the secondary air injection system and detects malfunction using a pressure sensor located on the air switching valve.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM observes the pressure in the secondary air passage using the pressure sensor located on the air switching valve in the secondary air injection system. The sensor measures the pressure in the secondary air passage and sends a signal to the ECM.

If the pressure level from the sensor has not reached a certain level despite the ECM turning on the air pump, or if the pressure level exceeds the threshold despite the ECM turning off the air pump, the ECM interprets this as a fault in the secondary air injection system and sets a DTC.

Wiring Diagram:

INSPECTION PROCEDURE

Step 1 - 2:

Step 3 - 6:

Step 7 - 9:

Step 10 - 11:

Hand-held tester

Step 1 - 5:

Step 6 - 8:

Step 9 - 10:

Step 10 (Continued):

OBD II scan tool (excluding hand-held tester)