Genuine Volvo 780 Ignition Control Module

Volvo 780 Ignition Control Module Parts and Q&A

• Ignition Module
  3501850
  Q: How to remove and install the Ignition Control Module on the intake manifold for increased cooling on Volvo 780?

  A:

  To remove the power stages that are located on the intake manifold for more cooling, remove the negative battery cable and the harness from the power stage(s), first. For each power stage being removed, remove the two bolts holding the power stage to the intake manifold and remove the power stage(s). For installation, return the power stage(s) to its position and tighten the retaining bolts, reconnect the harness to the power stage(s) and finally reconnect the negative battery cable.
• Ignition Module
  1346469
  Q: What steps are involved in removing and installing the ignition control module, power stage, and ignition coil on the REX-1 and EZ129K systems on Volvo 780?

  A:

  The power stage on the REX-1 and EZ129K systems is combined with the ignition coil into one unit. Starting with the EZ115K and EZ116K systems, you should start by disconnecting the negative battery cable and disconnecting the power stage connector. Next, take the mounting bolt(s) off of the retaining bracket and the ignition coil and power stage should be removed. To install, put the coil and power stage back in place and tighten retaining bolts, plug in power stage connector and reattach negative battery cable.