A: Disconnection of the negative battery cable for the 2AZ-FE needs at least 90 seconds of waiting time before proceeding. This precaution stops the activation of Air Bag and seat belt pretensioners. Next, remove the engine cover. Beginning with disconnecting the 4 ignition coil connectors users should then take out the 4 bolts while extracting the 4 ignition coils.
Q: How to install the ignition coil and spark plugs on Scion xB?
A: You should install 4 spark plugs onto the 2AZ-FE engine where each plug requires 19 Nm (194 kgf-cm, 14 ft-lbf) torque before attaching the 4 ignition coils using 4 bolts tightened to 9.0 Nm (92 kgf-cm, 80 in-lbf). Then connect all 4 ignition coil connectors. 1. Install 4 ignition coils using the provided 4 bolts then tighten them to 9.0 Nm (92 kgf-cm, 80 in-lbf). Finally, connect all 4 ignition coil connectors. Proceed to check the ignition timing after finishing this installation step. Secure the No. 1 engine cover sub-assembly to the engine with 2 nuts that should be tightened to 9.0 Nm (92 kgf-cm, 80 in-lbf).
A: The first step in servicing the 2ZR-FE ignition coil requires removal of the No. 2 cylinder head cover by disengaging the two fittings on the rear and then the two fittings on the front before completely taking off the cover while keeping the attached rubber grommets in place; carefully transfer any grommets that sit on the bolts to the cover. After detachment of the camshaft timing oil control valve connector and the four ignition coil connectors you should remove the four bolts and finally pull off the four ignition coils. Finish the removal by taking away the four spark plugs.