Service Manual

5-13
Table of Contents
Electrical
Twin Cylinder Engine Service Manual
February 2017 - Digital Edition
ELECTRICAL SYSTEM AND COMPONENTS
Voltage Regulator Testing (Cont.)
Test 2 (Circuit Test without Chassis Harness)
1. Set Digital Multi-Meter to DC volts.
- Connect the red lead to the red wire of the engine harness plug (DO NOT unplug from chassis harness).
- Connect the black lead to the negative post of the battery.
2. Start the engine.
3. Measure the battery voltage as engine speed increases from idle to fast.
4. Compare to expected voltage (battery voltage up to 15.1 VDC with speed 2200 to 3300 RPM):
- If measured voltage is above or below expected voltage perform Test 3.
- If measured voltage is in range, voltage regulator is working properly and the chassis harness has an issue
between the voltage regulator and battery.
a. Verify wire harness connections
-At engine harness to chassis harness
-At ignition switch
-At starter solenoid
-At positive battery terminal
b. Inspect fuses
-Charge system
-Main harness
c. Repeat Test 1 to validate charging system is working properly.