00 Using male pins Touch the pins directly using test probes. CAUTION Be sure that you do not short circuit the connector pins when you use the test probe because this could damage the internal circuit of the electronic control unit. 02590 Connector Inspection Procedures Visual inspection Check for loose connection and poor engagement. 02591 Check if harnesses are broken by pulling gently around the terminals. 02592 Check for a decrease in contact pressure between the male and female terminals. 02593 Check for poor contact caused by connector pins having fallen out, rusted terminals or foreign particles. 00-9