Equus 4320 Manual Pdf May 2026

Understanding the Equus 4320 and Its Manual

The Equus 4320 is a discontinued automotive digital multimeter (often referred to as the Innova 3320 in later production runs, as Equus rebranded to Innova). It was a popular entry-level diagnostic tool for measuring voltage, resistance, current, and testing diodes or battery health.

If the manual says "Inc," that means the monitor is incomplete. The back of the manual provides a universal drive cycle procedure to force the car to re-run its tests. equus 4320 manual pdf

1. Insert leads into COM and V/Ω/RPM.
2. Turn the rotary switch to the Dwell position.
3. Select the number of cylinders.
4. Connect the Black lead to ground.
5. Connect the Red lead to the negative (-) side of the ignition coil.
6. Start the engine; the display will show the dwell angle in degrees.

The manual provides clear instructions for device longevity, specifically regarding battery and fuse replacement. For instance, a low-battery symbol on the LCD alerts the user to replace the internal 1.5V AA batteries to ensure measurement accuracy. Its handheld, rugged design often includes protective rubber guards and a built-in stand, making it a "valuable tool for professionals seeking precise test and measurement results" in industrial or home environments.  Understanding the Equus 4320 and Its Manual The

: Equipped with three LEDs that represent the state-of-charge for commonly tested batteries. Essential Operating Procedures Insert leads into COM and V/Ω/RPM