OEM 2007 Toyota Sequoia Air Injection Pump

2007 Toyota Sequoia Parts Questions & Experts Answers

• Q: How to service and repair the Air Injection Pump on 2007 Toyota Sequoia?

  A: Service and repair operations on the Air Injection Pump start with removing the throttle body cover and intake manifold followed by removing the VSV for the air injection system by unfastening the 2 bolts and 2 VSVs from the intake manifold and disconnecting the 2 vacuum hoses. The first step begins with disconnecting air hose No.2 from both the air switching valve and the air switching valve connector and pressure sensor connector for the air injection system. Then secure the air pump assembly with its 4 mounting bolts. Detaching the 4 nuts with their accompanying 2 gaskets enables No.2 air switching valve removal along with a 2 No.3 air tubes detachment from exhaust manifolds followed by 4 bolt, 2 gasket and 2 No.3 air tubes removal from the 2 No.2 air switching valves until the 4 bolt, 2 gasket and 2 No.2 air switching valves are removed from the rear water by-pass joint which completes the process by disconnecting the 2 vacuum hoses from the No.2 air switching valves. The first step in disassembly requires disconnecting the vacuum hose from both the pressure sensor and air switching valve before removing two bolts securing the pressure sensor on the switching valve and finally removing two bolts securing the air switching valve on the air pump bracket and detaching the No.1 air hose. Reassembly starts by connecting the No.1 air hose to the air switching valve and air pump and follows with the securement of the air switching valve to the air pump bracket with two bolts that need a torque of 16 N.m (163 kgf.cm, 12 ft.lbf). The installation process requires a strain gauge application to the air switching valve using 2 bolts which should be tightened to 5.0 N.m (55 kgf.cm, 48 in.lbf). Then the vacuum hose needs connection to this assembly. The installation requires the air injection control driver to be attached with 2 bolts to the body at 18 N.m (184 kgf.cm, 13 ft.lbf) torque while connecting two connectors to the driver. Then, connect the 2 vacuum hoses to the No.2 air switching valves, install 2 new gaskets and the 2 No.2 air switching valves with 4 bolts to the rear water by-pass joint at a torque of 10 N.m (102 kgf.cm, 7 ft.lbf), followed by installing 2 new gaskets and connecting the 2 No.3 air tubes with 4 bolts to the No.2 air switching valve, also at 10 N.m (102 kgf.cm, 7 ft.lbf), and finally, install the 2 new gaskets and connect the 2 No.3 air tubes with 4 nuts to the exhaust manifold, maintaining the same torque. The installation concludes with securing the air pump assembly through 4 bolts set at 16 N.m (163 kgf.cm, 12 ft.lbf) and reattaching the pressure sensor connector for the air injection system along with the air switching valve connector and air hose No.2 to the valve. Next, install 2 VSVs to the intake manifold by tightening 2 bolts at 7.5 N.m (76 kgf.cm, 66 in.lbf) and connect 2 vacuum hoses to their respective VSVs. Finally reinstall the intake manifold and throttle body cover.