When performing a volt drop test across a starter relay, what is the maximum allowable voltage the DMM should display?

In a volt drop test across a starter relay, the maximum allowable voltage that should be displayed on a digital multimeter (DMM) is 0.2 volts direct current (vdc). This is because a lower voltage drop indicates that the relay is functioning properly, allowing for efficient current flow. Excessive voltage drop could suggest issues such as poor connections, corroded terminals, or internal resistance within the relay.

A reading of 0.2 vdc signifies that the starter relay is operating effectively without significant resistance that would impede current flow. It is important to maintain this low voltage drop to ensure optimal performance of the starting system and prevent performance issues or starting failures. Higher voltage drops would signal potential problems that need to be addressed to maintain the reliability of the starter circuit.