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Circuit/System Verification

  1. Ignition OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.0-15.0 V.
  2. Remove the drive belts. Refer Drive Belt Replacement .
  3. Place the S39 ignition switch to the CRANK position.
    • If the engine cranks normal, inspect the engine and belt drive system for mechanical binding, seized engine, or seized generator, etc.
  4. Test for less than 0.5 V between the positive battery cable and terminal A X2 at the M64 starter motor as the S39 ignition switch is placed to the CRANK position.
    • If greater than the specified value, replace the positive battery cable.
  5. Test for less than 0.5 V between the negative battery cable and the starter motor case as the S39 ignition switch is placed to the CRANK position.
    • If greater than the specified value, replace the negative battery cable.
  6. If all circuits test normal, replace the M64 starter motor.
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