Procedures:

  1. Adjust load to rated alternator output. Record VB (Battery Voltage) reading.
  2. Adjust load to rated alternator output. Record VA (Alternator Voltage) reading.
  3. Subtract VA (Alternator Voltage) from VB (Battery Voltage).

Loss not to exceed 0.5V. Proceed to positive and negative cable loss tests if loss exceeds specs.

Charging System Voltage Loss Test Circuit Diagram



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