[1] – Park machine safely with park brake locked.
[2] – Disconnect wire (A) from switch.
[3] – Use ohmmeter to check continuity between switch terminal and ground.
โNOTE:
Be sure to apply Pipe Sealant with TEFLON TM to threads of switch anytime it is installed.
If continuity is present between terminal and ground with engine off, replace switch.
b. If continuity is present, proceed to next step.
[4] – Start engine.
[5] – Measure resistance between terminal and engine block.
a. If continuity is present between terminal and ground, switch is good.
b. If continuity is not present between terminal and ground, test oil pressure. If oil pressure is greater than 55 kPa (8 psi), replace switch.