Innova 7111: Alternator Test

Purpose

To guide you on how to check the alternator status.

Introduction

The alternator is an electrical generator in a vehicle that converts mechanical energy into electrical energy to power the vehicle's electrical system and recharge the battery. The alternator operates whenever the engine is running, producing AC voltage which is then converted to DC voltage for use in the vehicle. Proper alternator function is crucial to the vehicle’s performance.

This article shows you how to perform the Alternator Test function on the 2022 Mitsubishi Eclipse Cross L4 1.5L.

Procedure

Step 1 - Connect the Innova 7111 Scan Tool Tablet to the vehicle and select 'Workshop Tools'

• First, connect the Innova 7111 Scan Tool Tablet to your vehicle via the Diagnostic Link Connector (DLC) to retrieve the vehicle's information such as Vehicle Identification Number (VIN) and model.

  Then, select the function 'Workshop Tools'.

Step 2 – Perform the Alternator Test

• Tap the Battery/ Alternator test item to perform the Alternator Test function.
• Now, choose the Alternator Test function.

Step 3 - Follow the requirements before testing

• Initially, start the engine and turn on the headlights. Ensure that your vehicle meets the requirements. If requirements are not met, you will not be able to proceed. Then, choose the 'Continue' button to move to the next step.

Step 4 – Increase the engine speed to meet the requirements

• Upon clicking the 'Continue' button in the preceding step, a pop-up screen appears on the scan tool.
• Subsequently, keep the accelerator pedal pressed to maintain engine speed above 2000 RPM for 20 seconds to assess the alternator's status.

Step 5 – Run the engine at the idle speed

• Turn off the headlights and, let the engine run at idle speed. Refer to the following screen for the alternator status display.

Step 6 – View the result and conclusion

• The Alternator Test function has test results that fall into three categories: PASS, WARNING, and BAD.

  For  PASS status, the charging voltage meets the specifications; the alternator and the charging system are working well.

  For a WARNING status, the charging voltage is not within the normal range. This could indicate a problem with the alternator or charging system components. To ensure the proper functioning of your charging system, inspect it for any defects or have it inspected at a certified repair center.

  For a BAD status, the charging voltage is higher or lower than the safe limit, which may harm the battery or other electrical components. To avoid damage, check your charging system, alternator, or components, or have them inspected by a certified repair center.

Reference Video

Alternator Test