The service of the ignition coil begins with disconnecting the negative battery cable and waiting 90 seconds to stop Air Bag and seat belt pretensioner activation. Start by taking off the engine cover and ignition coil assembly through connector unplugging and bolt and coil removal of four sets. Install the 4 ignition coils by fastening them with the 4 bolts to 9.0 N.m (90 kgf.cm, 80 in.lbf) and reconnect the 4 ignition coil connectors. Replace the engine cover afterward by reattaching the cable to the negative battery terminal and initializing the system since some components need initialization following cable detachment and reattachment.
Q: How to service the ignition coil and spark plugs on Scion xB?
A:
Before servicing ignition coil and spark plugs on the 2AZ-FE engine begin with removing the No. 1 engine cover sub-assembly by unfastening the 2 nuts and engine cover. First disconnect the 4 ignition coil connectors followed by the 4 bolt removal to take out the 4 ignition coils. Finally, remove the 4 spark plugs.