ENGINE MECHANICAL (Z10XEP AND Z12XEP ENGINES) 6A4-5
2) Disconnect horn connector, and remove horn (1).
3) Remove cover plate (2).
4) Disconnect oil pressure switch connector, and remove oil
pressure switch (3) from cylinder block.
5) Install special tools (Oil pressure gauge) to threaded hole of
oil pressure switch.
Special tool
(A): 09915-77311
(B): 09915-78211